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/*------------------------------------------------------------------------
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*
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* OpenVG 1.1 Reference Implementation
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* -----------------------------------
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*
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* Copyright (c) 2007 The Khronos Group Inc.
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* Portions copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and /or associated documentation files
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* (the "Materials "), to deal in the Materials without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Materials,
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* and to permit persons to whom the Materials are furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Materials.
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*
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* THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE MATERIALS OR
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* THE USE OR OTHER DEALINGS IN THE MATERIALS.
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*
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*//**
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* \file
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* \brief Implementation of Color and Image functions.
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* \note
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*//*-------------------------------------------------------------------*/
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#include "riImage.h"
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#include "riRasterizer.h"
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#include "riContext.h"
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#ifndef __SFDYNAMICBLITTER_H
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# include "sfDynamicBlitter.h"
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#endif
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//==============================================================================================
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namespace OpenVGRI
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{
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/*-------------------------------------------------------------------*//*!
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* \brief Converts from numBits into a shifted mask
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* \param
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* \return
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* \note
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*//*-------------------------------------------------------------------*/
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static RI_INLINE unsigned int bitsToMask(unsigned int bits, unsigned int shift)
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{
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return ((1<<bits)-1) << shift;
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}
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/*-------------------------------------------------------------------*//*!
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* \brief Converts from color (RIfloat) to an int with 1.0f mapped to the
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* given maximum with round-to-nearest semantics.
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* \param
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* \return
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* \note
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*//*-------------------------------------------------------------------*/
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RI_INLINE int ffloor(RIfloat x)
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{
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return (x >= 0) ? (int)x : (int)(x-1);
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}
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//static const float FLOAT_0 = 0.0f;
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static const float FLOAT_0_5 = 0.5f;
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/* \note Rewrite this if time. */
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static unsigned int colorToInt(RIfloat c, int maxc)
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{
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#if defined RI_USE_SSE
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/*
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Registers mapping:
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c <-> xmm0,
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maxc <-> xmm1
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0 <-> xmm2
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*/
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_asm
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{
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xorps xmm2, xmm2 ; xmm2 = 0
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;---------------------------------------------
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; Computing: xmm0 = (c * (RIfloat)maxc + 0.5f)
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;---------------------------------------------
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movss xmm0, dword ptr [c] ; xmm0 = c
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cvtsi2ss xmm1, dword ptr [maxc] ; xmm1 = (float)maxc
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mulss xmm0, xmm1 ; xmm0 = xmm0 * xmm1 = c * (float)maxc
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addss xmm0, FLOAT_0_5 ; xmm0 = xmm0 + 0.5f = c * (float)maxc + 0.5f
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;---------------------------------------------
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; Computing: xmm0 = floor(xmm0) = floor(c * (RIfloat)maxc + 0.5f)
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;---------------------------------------------
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cvttss2si ebx, xmm0 ; ebx = (int)xmm0
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mov eax, ebx ; eax = ebx = (int)xmm0
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shr eax, 31 ; eax = sign(eax) = sign((int)xmm0)
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sub ebx, eax ; ebx = ebx - sign((int)xmm0) = (int)xmm0 - sign((int)xmm0) = (int)floor((int)xmm0)
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cvtsi2ss xmm0, ebx ; xmm0 = floor(xmm0)
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pmaxsw xmm0, xmm2; ; xmm0 = MAX(xmm0, 0)
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pminsw xmm0, xmm1 ; xmm0 = MIN(xmm0, maxc)
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cvttss2si eax, xmm0 ; return value = eax = (int)xmm0
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}
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#else
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return RI_INT_MIN(RI_INT_MAX((int)ffloor(c * (RIfloat)maxc + 0.5f), 0), maxc);
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#endif
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}
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/*-------------------------------------------------------------------*//*!
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* \brief Converts from int to color (RIfloat) with the given maximum
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* mapped to 1.0f.
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* \param
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* \return
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* \note
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*//*-------------------------------------------------------------------*/
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static RI_INLINE RIfloat intToColor(unsigned int i, unsigned int maxi)
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{
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return (RIfloat)(i & maxi) / (RIfloat)maxi;
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}
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void Color::Descriptor::toSmallDescriptor(Color::SmallDescriptor& smallDesc) const
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{
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switch (bitsPerPixel)
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{
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case 32:
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smallDesc.size = SIZE_32;
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break;
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case 24:
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smallDesc.size = SIZE_24;
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break;
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case 16:
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smallDesc.size = SIZE_16;
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break;
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case 8:
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smallDesc.size = SIZE_8;
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break;
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case 4:
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smallDesc.size = SIZE_4;
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break;
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default:
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RI_ASSERT(bitsPerPixel == 1);
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smallDesc.size = SIZE_1;
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break;
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}
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smallDesc.shape = shape;
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smallDesc.internalFormat = internalFormat;
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}
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Color::Descriptor Color::Descriptor::getDummyDescriptor()
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{
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static const Descriptor dummy = Color::Descriptor(8,0,8,8,8,16,8,24,0,0,sRGBA,32,SHAPE_ABGR);
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return dummy;
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}
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/**
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* \brief Determine the shape of the color format from other data.
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* \todo The naming is poor because it may be interpreted as returning the member
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* "shape".
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*/
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Color::Shape Color::Descriptor::getShape() const
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{
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// \todo There should be some easier way to define the shape so that it does
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// not need to be determined with so many conditions.
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if (isAlphaOnly())
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{
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return SHAPE_A;
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}
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else if (isLuminance())
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{
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if (alphaBits)
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{
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if (alphaShift == 0)
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return SHAPE_LA;
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return SHAPE_AL;
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}
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return SHAPE_L;
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}
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else if (!alphaBits)
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{
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if (bitsPerPixel == 32)
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{
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switch(redShift)
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{
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case 0:
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return SHAPE_XBGR;
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case 8:
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return SHAPE_BGRX;
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case 16:
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return SHAPE_XRGB;
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default:
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RI_ASSERT(redShift == 24);
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return SHAPE_RGBX;
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}
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} else if (bitsPerPixel == 24)
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{
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if (!redShift)
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return SHAPE_BGR;
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else
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{
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RI_ASSERT(redShift == 16);
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return SHAPE_RGB;
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}
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} else
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{
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RI_ASSERT(redBits == 5 && greenBits == 6 && blueBits == 5);
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if(redShift)
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return SHAPE_RGB;
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else
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return SHAPE_BGR;
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}
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}
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else
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{
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if (bitsPerPixel == 32)
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{
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switch(redShift)
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{
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case 0:
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return SHAPE_ABGR;
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case 8:
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return SHAPE_BGRA;
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case 16:
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return SHAPE_ARGB;
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default:
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RI_ASSERT(redShift == 24);
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return SHAPE_RGBA;
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}
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} else
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{
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RI_ASSERT(bitsPerPixel == 16);
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if (redBits == 5)
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{
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RI_ASSERT(greenBits == 5 && blueBits == 5 && alphaBits == 1);
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switch(redShift)
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{
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case 0:
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return SHAPE_ABGR;
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case 1:
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return SHAPE_BGRA;
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case 10:
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return SHAPE_ARGB;
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default:
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RI_ASSERT(redShift == 11);
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return SHAPE_RGBA;
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}
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} else
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{
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RI_ASSERT(redBits == 4 && greenBits == 4 && alphaBits == 4);
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switch(redShift)
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{
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case 0:
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return SHAPE_ABGR;
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case 4:
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return SHAPE_BGRA;
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case 8:
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return SHAPE_ARGB;
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default:
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RI_ASSERT(redShift == 12);
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return SHAPE_RGBA;
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}
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}
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}
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}
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}
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/*-------------------------------------------------------------------*//*!
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* \brief Converts from packed integer in a given format to a Color.
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* \param
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* \return
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* \note
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*//*-------------------------------------------------------------------*/
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void Color::unpack(unsigned int inputData, const Color::Descriptor& inputDesc)
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{
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int rb = inputDesc.redBits;
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int gb = inputDesc.greenBits;
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int bb = inputDesc.blueBits;
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int ab = inputDesc.alphaBits;
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int lb = inputDesc.luminanceBits;
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int rs = inputDesc.redShift;
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int gs = inputDesc.greenShift;
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int bs = inputDesc.blueShift;
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int as = inputDesc.alphaShift;
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int ls = inputDesc.luminanceShift;
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m_format = inputDesc.internalFormat;
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if(lb)
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{ //luminance
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r = g = b = intToColor(inputData >> ls, (1<<lb)-1);
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a = 1.0f;
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}
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else
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{ //rgba
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r = rb ? intToColor(inputData >> rs, (1<<rb)-1) : (RIfloat)1.0f;
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g = gb ? intToColor(inputData >> gs, (1<<gb)-1) : (RIfloat)1.0f;
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b = bb ? intToColor(inputData >> bs, (1<<bb)-1) : (RIfloat)1.0f;
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a = ab ? intToColor(inputData >> as, (1<<ab)-1) : (RIfloat)1.0f;
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306 |
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if(isPremultiplied())
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{ //clamp premultiplied color to alpha to enforce consistency
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309 |
r = RI_MIN(r, a);
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g = RI_MIN(g, a);
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b = RI_MIN(b, a);
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312 |
}
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313 |
}
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314 |
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assertConsistency();
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316 |
}
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317 |
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318 |
/*-------------------------------------------------------------------*//*!
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* \brief Converts from Color to a packed integer in a given format.
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* \param
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321 |
* \return
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322 |
* \note
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*//*-------------------------------------------------------------------*/
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324 |
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unsigned int Color::pack(const Color::Descriptor& outputDesc) const
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326 |
{
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327 |
assertConsistency();
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328 |
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329 |
int rb = outputDesc.redBits;
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330 |
int gb = outputDesc.greenBits;
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331 |
int bb = outputDesc.blueBits;
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332 |
int ab = outputDesc.alphaBits;
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333 |
int lb = outputDesc.luminanceBits;
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334 |
int rs = outputDesc.redShift;
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335 |
int gs = outputDesc.greenShift;
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336 |
int bs = outputDesc.blueShift;
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337 |
int as = outputDesc.alphaShift;
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338 |
int ls = outputDesc.luminanceShift;
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339 |
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340 |
if(lb)
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341 |
{ //luminance
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342 |
RI_ASSERT(isLuminance());
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343 |
return colorToInt(r, (1<<lb)-1) << ls;
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344 |
}
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345 |
else
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346 |
{ //rgb
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347 |
RI_ASSERT(!isLuminance());
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348 |
unsigned int cr = rb ? colorToInt(r, (1<<rb)-1) : 0;
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349 |
unsigned int cg = gb ? colorToInt(g, (1<<gb)-1) : 0;
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350 |
unsigned int cb = bb ? colorToInt(b, (1<<bb)-1) : 0;
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351 |
unsigned int ca = ab ? colorToInt(a, (1<<ab)-1) : 0;
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352 |
return packRGBAInteger(cr, rs, cg, gs, cb, bs, ca, as);
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353 |
}
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354 |
}
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355 |
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356 |
/*-------------------------------------------------------------------*//*!
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357 |
* \brief Converts from the current internal format to another.
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358 |
* \param
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359 |
* \return
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360 |
* \note
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|
361 |
*//*-------------------------------------------------------------------*/
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362 |
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363 |
/* \todo Integer & lookup versions */
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|
364 |
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|
365 |
static RIfloat gamma(RIfloat c)
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|
366 |
{
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|
367 |
if( c <= 0.00304f )
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|
368 |
c *= 12.92f;
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369 |
else
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|
370 |
c = 1.0556f * (RIfloat)pow(c, 1.0f/2.4f) - 0.0556f;
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|
371 |
return c;
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|
372 |
}
|
|
|
373 |
|
|
|
374 |
static RIfloat invgamma(RIfloat c)
|
|
|
375 |
{
|
|
|
376 |
if( c <= 0.03928f )
|
|
|
377 |
c /= 12.92f;
|
|
|
378 |
else
|
|
|
379 |
c = (RIfloat)pow((c + 0.0556f)/1.0556f, 2.4f);
|
|
|
380 |
return c;
|
|
|
381 |
}
|
|
|
382 |
|
|
|
383 |
static RIfloat lRGBtoL(RIfloat r, RIfloat g, RIfloat b)
|
|
|
384 |
{
|
|
|
385 |
return 0.2126f*r + 0.7152f*g + 0.0722f*b;
|
|
|
386 |
}
|
|
|
387 |
|
|
|
388 |
void Color::convert(InternalFormat outputFormat)
|
|
|
389 |
{
|
|
|
390 |
/* \todo This should probably be converted to integer code. */
|
|
|
391 |
|
|
|
392 |
assertConsistency();
|
|
|
393 |
|
|
|
394 |
if( m_format == outputFormat )
|
|
|
395 |
return;
|
|
|
396 |
|
|
|
397 |
if(isPremultiplied())
|
|
|
398 |
{ //unpremultiply
|
|
|
399 |
RIfloat ooa = (a != 0.0f) ? 1.0f / a : (RIfloat)0.0f;
|
|
|
400 |
r *= ooa;
|
|
|
401 |
g *= ooa;
|
|
|
402 |
b *= ooa;
|
|
|
403 |
}
|
|
|
404 |
|
|
|
405 |
//From Section 3.4.2 of OpenVG spec
|
|
|
406 |
//1: sRGB = gamma(lRGB)
|
|
|
407 |
//2: lRGB = invgamma(sRGB)
|
|
|
408 |
//3: lL = 0.2126 lR + 0.7152 lG + 0.0722 lB
|
|
|
409 |
//4: lRGB = lL
|
|
|
410 |
//5: sL = gamma(lL)
|
|
|
411 |
//6: lL = invgamma(sL)
|
|
|
412 |
//7: sRGB = sL
|
|
|
413 |
|
|
|
414 |
//Source/Dest lRGB sRGB lL sL
|
|
|
415 |
//lRGB - 1 3 3,5
|
|
|
416 |
//sRGB 2 - 2,3 2,3,5
|
|
|
417 |
//lL 4 4,1 - 5
|
|
|
418 |
//sL 7,2 7 6 -
|
|
|
419 |
|
|
|
420 |
const unsigned int shift = 3;
|
|
|
421 |
unsigned int conversion = (m_format & (NONLINEAR | LUMINANCE)) | ((outputFormat & (NONLINEAR | LUMINANCE)) << shift);
|
|
|
422 |
|
|
|
423 |
switch(conversion)
|
|
|
424 |
{
|
|
|
425 |
case lRGBA | (sRGBA << shift): r = gamma(r); g = gamma(g); b = gamma(b); break; //1
|
|
|
426 |
case lRGBA | (lLA << shift) : r = g = b = lRGBtoL(r, g, b); break; //3
|
|
|
427 |
case lRGBA | (sLA << shift) : r = g = b = gamma(lRGBtoL(r, g, b)); break; //3,5
|
|
|
428 |
case sRGBA | (lRGBA << shift): r = invgamma(r); g = invgamma(g); b = invgamma(b); break; //2
|
|
|
429 |
case sRGBA | (lLA << shift) : r = g = b = lRGBtoL(invgamma(r), invgamma(g), invgamma(b)); break; //2,3
|
|
|
430 |
case sRGBA | (sLA << shift) : r = g = b = gamma(lRGBtoL(invgamma(r), invgamma(g), invgamma(b))); break;//2,3,5
|
|
|
431 |
case lLA | (lRGBA << shift): break; //4
|
|
|
432 |
case lLA | (sRGBA << shift): r = g = b = gamma(r); break; //4,1
|
|
|
433 |
case lLA | (sLA << shift) : r = g = b = gamma(r); break; //5
|
|
|
434 |
case sLA | (lRGBA << shift): r = g = b = invgamma(r); break; //7,2
|
|
|
435 |
case sLA | (sRGBA << shift): break; //7
|
|
|
436 |
case sLA | (lLA << shift) : r = g = b = invgamma(r); break; //6
|
|
|
437 |
default: RI_ASSERT((m_format & (LUMINANCE | NONLINEAR)) == (outputFormat & (LUMINANCE | NONLINEAR))); break; //nop
|
|
|
438 |
}
|
|
|
439 |
|
|
|
440 |
if(outputFormat & PREMULTIPLIED)
|
|
|
441 |
{ //premultiply
|
|
|
442 |
r *= a;
|
|
|
443 |
g *= a;
|
|
|
444 |
b *= a;
|
|
|
445 |
}
|
|
|
446 |
m_format = outputFormat;
|
|
|
447 |
|
|
|
448 |
assertConsistency();
|
|
|
449 |
}
|
|
|
450 |
|
|
|
451 |
/*------------------------------------------------------------------------*//*!
|
|
|
452 |
* \brief Creates a pixel format descriptor out of VGImageFormat
|
|
|
453 |
* \param
|
|
|
454 |
* \return
|
|
|
455 |
* \note Remove this function and use the "const" version for consistency.
|
|
|
456 |
*//*------------------------------------------------------------------------*/
|
|
|
457 |
Color::Descriptor Color::formatToDescriptor(VGImageFormat format)
|
|
|
458 |
{
|
|
|
459 |
Descriptor desc;
|
|
|
460 |
memset(&desc, 0, sizeof(Descriptor));
|
|
|
461 |
RI_ASSERT(isValidImageFormat(format));
|
|
|
462 |
|
|
|
463 |
int baseFormat = (int)format & 15;
|
|
|
464 |
const int numBaseFormats = 15;
|
|
|
465 |
RI_ASSERT(baseFormat >= 0 && baseFormat < numBaseFormats);
|
|
|
466 |
int swizzleBits = ((int)format >> 6) & 3;
|
|
|
467 |
|
|
|
468 |
/* base formats
|
|
|
469 |
VG_sRGBX_8888 = 0,
|
|
|
470 |
VG_sRGBA_8888 = 1,
|
|
|
471 |
VG_sRGBA_8888_PRE = 2,
|
|
|
472 |
VG_sRGB_565 = 3,
|
|
|
473 |
VG_sRGBA_5551 = 4,
|
|
|
474 |
VG_sRGBA_4444 = 5,
|
|
|
475 |
VG_sL_8 = 6,
|
|
|
476 |
VG_lRGBX_8888 = 7,
|
|
|
477 |
VG_lRGBA_8888 = 8,
|
|
|
478 |
VG_lRGBA_8888_PRE = 9,
|
|
|
479 |
VG_lL_8 = 10,
|
|
|
480 |
VG_A_8 = 11,
|
|
|
481 |
VG_BW_1 = 12,
|
|
|
482 |
VG_A_1 = 13,
|
|
|
483 |
VG_A_4 = 14,
|
|
|
484 |
*/
|
|
|
485 |
|
|
|
486 |
static const int redBits[numBaseFormats] = {8, 8, 8, 5, 5, 4, 0, 8, 8, 8, 0, 0, 0, 0, 0};
|
|
|
487 |
static const int greenBits[numBaseFormats] = {8, 8, 8, 6, 5, 4, 0, 8, 8, 8, 0, 0, 0, 0, 0};
|
|
|
488 |
static const int blueBits[numBaseFormats] = {8, 8, 8, 5, 5, 4, 0, 8, 8, 8, 0, 0, 0, 0, 0};
|
|
|
489 |
static const int alphaBits[numBaseFormats] = {0, 8, 8, 0, 1, 4, 0, 0, 8, 8, 0, 8, 0, 1, 4};
|
|
|
490 |
static const int luminanceBits[numBaseFormats] = {0, 0, 0, 0, 0, 0, 8, 0, 0, 0, 8, 0, 1, 0, 0};
|
|
|
491 |
|
|
|
492 |
static const int redShifts[4*numBaseFormats] = {24, 24, 24, 11, 11, 12, 0, 24, 24, 24, 0, 0, 0, 0, 0, //RGBA
|
|
|
493 |
16, 16, 16, 11, 10, 8, 0, 16, 16, 16, 0, 0, 0, 0, 0, //ARGB
|
|
|
494 |
8, 8, 8, 0, 1, 4, 0, 8, 8, 8, 0, 0, 0, 0, 0, //BGRA
|
|
|
495 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; //ABGR
|
|
|
496 |
|
|
|
497 |
static const int greenShifts[4*numBaseFormats] = {16, 16, 16, 5, 6, 8, 0, 16, 16, 16, 0, 0, 0, 0, 0, //RGBA
|
|
|
498 |
8, 8, 8, 5, 5, 4, 0, 8, 8, 8, 0, 0, 0, 0, 0, //ARGB
|
|
|
499 |
16, 16, 16, 5, 6, 8, 0, 16, 16, 16, 0, 0, 0, 0, 0, //BGRA
|
|
|
500 |
8, 8, 8, 5, 5, 4, 0, 8, 8, 8, 0, 0, 0, 0, 0};//ABGR
|
|
|
501 |
|
|
|
502 |
static const int blueShifts[4*numBaseFormats] = {8, 8, 8, 0, 1, 4, 0, 8, 8, 8, 0, 0, 0, 0, 0, //RGBA
|
|
|
503 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //ARGB
|
|
|
504 |
24, 24, 24, 11, 11, 12, 0, 24, 24, 24, 0, 0, 0, 0, 0, //BGRA
|
|
|
505 |
16, 16, 16, 11, 10, 8, 0, 16, 16, 16, 0, 0, 0, 0, 0};//ABGR
|
|
|
506 |
|
|
|
507 |
static const int alphaShifts[4*numBaseFormats] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //RGBA
|
|
|
508 |
0, 24, 24, 0, 15, 12, 0, 0, 24, 24, 0, 0, 0, 0, 0, //ARGB
|
|
|
509 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //BGRA
|
|
|
510 |
0, 24, 24, 0, 15, 12, 0, 0, 24, 24, 0, 0, 0, 0, 0};//ABGR
|
|
|
511 |
|
|
|
512 |
static const int bpps[numBaseFormats] = {32, 32, 32, 16, 16, 16, 8, 32, 32, 32, 8, 8, 1, 1, 4};
|
|
|
513 |
|
|
|
514 |
static const InternalFormat internalFormats[numBaseFormats] = {sRGBA, sRGBA, sRGBA_PRE, sRGBA, sRGBA, sRGBA, sLA, lRGBA, lRGBA, lRGBA_PRE, lLA, lRGBA, lLA, lRGBA, lRGBA};
|
|
|
515 |
|
|
|
516 |
desc.redBits = redBits[baseFormat];
|
|
|
517 |
desc.greenBits = greenBits[baseFormat];
|
|
|
518 |
desc.blueBits = blueBits[baseFormat];
|
|
|
519 |
desc.alphaBits = alphaBits[baseFormat];
|
|
|
520 |
desc.luminanceBits = luminanceBits[baseFormat];
|
|
|
521 |
|
|
|
522 |
desc.redShift = redShifts[swizzleBits * numBaseFormats + baseFormat];
|
|
|
523 |
desc.greenShift = greenShifts[swizzleBits * numBaseFormats + baseFormat];
|
|
|
524 |
desc.blueShift = blueShifts[swizzleBits * numBaseFormats + baseFormat];
|
|
|
525 |
desc.alphaShift = alphaShifts[swizzleBits * numBaseFormats + baseFormat];
|
|
|
526 |
desc.luminanceShift = 0; //always zero
|
|
|
527 |
|
|
|
528 |
desc.vgFormat = format;
|
|
|
529 |
desc.bitsPerPixel = bpps[baseFormat];
|
|
|
530 |
desc.bytesPerPixel = desc.bitsPerPixel / 8;
|
|
|
531 |
desc.internalFormat = internalFormats[baseFormat];
|
|
|
532 |
desc.shape = desc.getShape();
|
|
|
533 |
|
|
|
534 |
if (desc.alphaBits)
|
|
|
535 |
{
|
|
|
536 |
desc.maskBits = desc.alphaBits;
|
|
|
537 |
desc.maskShift = desc.alphaShift;
|
|
|
538 |
}
|
|
|
539 |
else if (!desc.isLuminance())
|
|
|
540 |
{
|
|
|
541 |
desc.maskBits = desc.redBits;
|
|
|
542 |
desc.maskShift = desc.redShift;
|
|
|
543 |
}
|
|
|
544 |
else
|
|
|
545 |
{
|
|
|
546 |
desc.maskBits = desc.luminanceBits;
|
|
|
547 |
desc.maskShift = desc.luminanceShift;
|
|
|
548 |
}
|
|
|
549 |
|
|
|
550 |
return desc;
|
|
|
551 |
}
|
|
|
552 |
|
|
|
553 |
|
|
|
554 |
struct DescToFormatMapping
|
|
|
555 |
{
|
|
|
556 |
Color::Descriptor desc;
|
|
|
557 |
VGImageFormat format;
|
|
|
558 |
};
|
|
|
559 |
|
|
|
560 |
RI_INLINE static bool isDescEqualToMapping(const Color::Descriptor& desc, const DescToFormatMapping &mapping)
|
|
|
561 |
{
|
|
|
562 |
if ((desc.redBits == mapping.desc.redBits) &&
|
|
|
563 |
(desc.redShift == mapping.desc.redShift) &&
|
|
|
564 |
(desc.greenBits == mapping.desc.greenBits) &&
|
|
|
565 |
(desc.greenShift == mapping.desc.greenShift) &&
|
|
|
566 |
(desc.blueBits == mapping.desc.blueBits) &&
|
|
|
567 |
(desc.blueShift == mapping.desc.blueShift) &&
|
|
|
568 |
(desc.alphaBits == mapping.desc.alphaBits) &&
|
|
|
569 |
(desc.alphaShift == mapping.desc.alphaShift) &&
|
|
|
570 |
(desc.luminanceBits == mapping.desc.luminanceBits) &&
|
|
|
571 |
(desc.luminanceShift == mapping.desc.luminanceShift) &&
|
|
|
572 |
(desc.internalFormat == mapping.desc.internalFormat) &&
|
|
|
573 |
(desc.bitsPerPixel == mapping.desc.bitsPerPixel))
|
|
|
574 |
return true;
|
|
|
575 |
|
|
|
576 |
return false;
|
|
|
577 |
}
|
|
|
578 |
|
|
|
579 |
VGImageFormat Color::descriptorToVGImageFormat(const Descriptor& desc)
|
|
|
580 |
{
|
|
|
581 |
//Color::Descriptor::Descriptor(int dredBits, int dredShift, int dgreenBits, int dgreenShift, int dblueBits, int dblueShift, int dalphaBits, int dalphaShift, int dluminanceBits, int dluminanceShift, InternalFormat dinternalFormat, int dbpp) :
|
|
|
582 |
// \todo These are hardcoded here only to allow constant initialization, they should be generated
|
|
|
583 |
// using formatToDescriptor!
|
|
|
584 |
static const DescToFormatMapping map[] = {
|
|
|
585 |
/* RGB{A,X} channel ordering */
|
|
|
586 |
{ formatToDescriptorConst(VG_sRGBX_8888), VG_sRGBX_8888 },
|
|
|
587 |
{ formatToDescriptorConst(VG_sRGBA_8888), VG_sRGBA_8888 },
|
|
|
588 |
{ formatToDescriptorConst(VG_sRGBA_8888_PRE), VG_sRGBA_8888_PRE },
|
|
|
589 |
{ formatToDescriptorConst(VG_sRGB_565), VG_sRGB_565 },
|
|
|
590 |
{ formatToDescriptorConst(VG_sRGBA_5551), VG_sRGBA_5551 },
|
|
|
591 |
{ formatToDescriptorConst(VG_sRGBA_4444), VG_sRGBA_4444 },
|
|
|
592 |
{ formatToDescriptorConst(VG_sL_8), VG_sL_8 },
|
|
|
593 |
{ formatToDescriptorConst(VG_lRGBX_8888), VG_lRGBX_8888 },
|
|
|
594 |
{ formatToDescriptorConst(VG_lRGBA_8888), VG_lRGBA_8888 },
|
|
|
595 |
{ formatToDescriptorConst(VG_lRGBA_8888_PRE), VG_lRGBA_8888_PRE },
|
|
|
596 |
{ formatToDescriptorConst(VG_lL_8), VG_lL_8 },
|
|
|
597 |
{ formatToDescriptorConst(VG_A_8), VG_A_8 },
|
|
|
598 |
{ formatToDescriptorConst(VG_BW_1), VG_BW_1 },
|
|
|
599 |
{ formatToDescriptorConst(VG_A_1), VG_A_1 },
|
|
|
600 |
{ formatToDescriptorConst(VG_A_4), VG_A_4 },
|
|
|
601 |
|
|
|
602 |
/* {A,X}RGB channel ordering */
|
|
|
603 |
{ formatToDescriptorConst(VG_sXRGB_8888), VG_sXRGB_8888 },
|
|
|
604 |
{ formatToDescriptorConst(VG_sARGB_8888), VG_sARGB_8888 },
|
|
|
605 |
{ formatToDescriptorConst(VG_sARGB_8888_PRE), VG_sARGB_8888_PRE },
|
|
|
606 |
{ formatToDescriptorConst(VG_sARGB_1555), VG_sARGB_1555 },
|
|
|
607 |
{ formatToDescriptorConst(VG_sARGB_4444), VG_sARGB_4444 },
|
|
|
608 |
{ formatToDescriptorConst(VG_lXRGB_8888), VG_lXRGB_8888 },
|
|
|
609 |
{ formatToDescriptorConst(VG_lARGB_8888), VG_lARGB_8888 },
|
|
|
610 |
{ formatToDescriptorConst(VG_lARGB_8888_PRE), VG_lARGB_8888_PRE },
|
|
|
611 |
|
|
|
612 |
/* BGR{A,X} channel ordering */
|
|
|
613 |
{ formatToDescriptorConst(VG_sBGRX_8888), VG_sBGRX_8888 },
|
|
|
614 |
{ formatToDescriptorConst(VG_sBGRA_8888), VG_sBGRA_8888 },
|
|
|
615 |
{ formatToDescriptorConst(VG_sBGRA_8888_PRE), VG_sBGRA_8888_PRE },
|
|
|
616 |
{ formatToDescriptorConst(VG_sBGR_565), VG_sBGR_565 },
|
|
|
617 |
{ formatToDescriptorConst(VG_sBGRA_5551), VG_sBGRA_5551 },
|
|
|
618 |
{ formatToDescriptorConst(VG_sBGRA_4444), VG_sBGRA_4444 },
|
|
|
619 |
{ formatToDescriptorConst(VG_lBGRX_8888), VG_lBGRX_8888 },
|
|
|
620 |
{ formatToDescriptorConst(VG_lBGRA_8888), VG_lBGRA_8888 },
|
|
|
621 |
{ formatToDescriptorConst(VG_lBGRA_8888_PRE), VG_lBGRA_8888_PRE },
|
|
|
622 |
|
|
|
623 |
/* {A,X}BGR channel ordering */
|
|
|
624 |
{ formatToDescriptorConst(VG_sXBGR_8888), VG_sXBGR_8888 },
|
|
|
625 |
{ formatToDescriptorConst(VG_sABGR_8888), VG_sABGR_8888 },
|
|
|
626 |
{ formatToDescriptorConst(VG_sABGR_8888_PRE), VG_sABGR_8888_PRE },
|
|
|
627 |
{ formatToDescriptorConst(VG_sABGR_1555), VG_sABGR_1555 },
|
|
|
628 |
{ formatToDescriptorConst(VG_sABGR_4444), VG_sABGR_4444 },
|
|
|
629 |
{ formatToDescriptorConst(VG_lXBGR_8888), VG_lXBGR_8888 },
|
|
|
630 |
{ formatToDescriptorConst(VG_lABGR_8888), VG_lABGR_8888 },
|
|
|
631 |
{ formatToDescriptorConst(VG_lABGR_8888_PRE), VG_lABGR_8888_PRE },
|
|
|
632 |
};
|
|
|
633 |
|
|
|
634 |
for (size_t i = 0; i < sizeof(map)/sizeof(map[0]); i++)
|
|
|
635 |
{
|
|
|
636 |
if (isDescEqualToMapping(desc, map[i]))
|
|
|
637 |
return map[i].format;
|
|
|
638 |
}
|
|
|
639 |
RI_ASSERT(false);
|
|
|
640 |
return (VGImageFormat)-1;
|
|
|
641 |
}
|
|
|
642 |
|
|
|
643 |
/*-------------------------------------------------------------------*//*!
|
|
|
644 |
* \brief Checks if the pixel format descriptor is valid (i.e. all the
|
|
|
645 |
* values are supported by the RI)
|
|
|
646 |
* \param
|
|
|
647 |
* \return
|
|
|
648 |
* \note
|
|
|
649 |
*//*-------------------------------------------------------------------*/
|
|
|
650 |
|
|
|
651 |
bool Color::isValidDescriptor(const Color::Descriptor& desc)
|
|
|
652 |
{
|
|
|
653 |
//A valid descriptor has 1, 2, 4, 8, 16, or 32 bits per pixel, and either luminance or rgba channels, but not both.
|
|
|
654 |
//Any of the rgba channels can be missing, and not all bits need to be used. Maximum channel bit depth is 8.
|
|
|
655 |
int rb = desc.redBits;
|
|
|
656 |
int gb = desc.greenBits;
|
|
|
657 |
int bb = desc.blueBits;
|
|
|
658 |
int ab = desc.alphaBits;
|
|
|
659 |
int lb = desc.luminanceBits;
|
|
|
660 |
int rs = desc.redShift;
|
|
|
661 |
int gs = desc.greenShift;
|
|
|
662 |
int bs = desc.blueShift;
|
|
|
663 |
int as = desc.alphaShift;
|
|
|
664 |
int ls = desc.luminanceShift;
|
|
|
665 |
int bpp = desc.bitsPerPixel;
|
|
|
666 |
|
|
|
667 |
int rgbaBits = rb + gb + bb + ab;
|
|
|
668 |
if(rb < 0 || rb > 8 || rs < 0 || rs + rb > bpp || !(rb || !rs))
|
|
|
669 |
return false; //invalid channel description
|
|
|
670 |
if(gb < 0 || gb > 8 || gs < 0 || gs + gb > bpp || !(gb || !gs))
|
|
|
671 |
return false; //invalid channel description
|
|
|
672 |
if(bb < 0 || bb > 8 || bs < 0 || bs + bb > bpp || !(bb || !bs))
|
|
|
673 |
return false; //invalid channel description
|
|
|
674 |
if(ab < 0 || ab > 8 || as < 0 || as + ab > bpp || !(ab || !as))
|
|
|
675 |
return false; //invalid channel description
|
|
|
676 |
if(lb < 0 || lb > 8 || ls < 0 || ls + lb > bpp || !(lb || !ls))
|
|
|
677 |
return false; //invalid channel description
|
|
|
678 |
|
|
|
679 |
#if 0
|
|
|
680 |
if(rgbaBits && lb)
|
|
|
681 |
return false; //can't have both rgba and luminance
|
|
|
682 |
#endif
|
|
|
683 |
if(!rgbaBits && !lb)
|
|
|
684 |
return false; //must have either rgba or luminance
|
|
|
685 |
if(rgbaBits)
|
|
|
686 |
{ //rgba
|
|
|
687 |
if(rb+gb+bb == 0)
|
|
|
688 |
{ //alpha only
|
|
|
689 |
if(rs || gs || bs || as || ls)
|
|
|
690 |
return false; //wrong shifts (even alpha shift must be zero)
|
|
|
691 |
if((ab != 1 && ab != 2 && ab != 4 && ab != 8) || bpp != ab)
|
|
|
692 |
return false; //alpha size must be 1, 2, 4, or, 8, bpp must match
|
|
|
693 |
}
|
|
|
694 |
else
|
|
|
695 |
{ //rgba
|
|
|
696 |
if(rgbaBits > bpp)
|
|
|
697 |
return false; //bpp must be greater than or equal to the sum of rgba bits
|
|
|
698 |
if(!(bpp == 32 || bpp == 16 || bpp == 8))
|
|
|
699 |
return false; //only 1, 2, and 4 byte formats are supported for rgba
|
|
|
700 |
|
|
|
701 |
unsigned int rm = bitsToMask((unsigned int)rb, (unsigned int)rs);
|
|
|
702 |
unsigned int gm = bitsToMask((unsigned int)gb, (unsigned int)gs);
|
|
|
703 |
unsigned int bm = bitsToMask((unsigned int)bb, (unsigned int)bs);
|
|
|
704 |
unsigned int am = bitsToMask((unsigned int)ab, (unsigned int)as);
|
|
|
705 |
if((rm & gm) || (rm & bm) || (rm & am) || (gm & bm) || (gm & am) || (bm & am))
|
|
|
706 |
return false; //channels overlap
|
|
|
707 |
}
|
|
|
708 |
}
|
|
|
709 |
else
|
|
|
710 |
{ //luminance
|
|
|
711 |
if(rs || gs || bs || as || ls)
|
|
|
712 |
return false; //wrong shifts (even luminance shift must be zero)
|
|
|
713 |
if(!(lb == 1 || lb == 8) || bpp != lb)
|
|
|
714 |
return false; //luminance size must be either 1 or 8, bpp must match
|
|
|
715 |
}
|
|
|
716 |
|
|
|
717 |
if(desc.vgFormat != -1)
|
|
|
718 |
{
|
|
|
719 |
if(!isValidImageFormat(desc.vgFormat))
|
|
|
720 |
return false; //invalid image format
|
|
|
721 |
|
|
|
722 |
Descriptor d = formatToDescriptor(desc.vgFormat);
|
|
|
723 |
if(d.redBits != rb || d.greenBits != gb || d.blueBits != bb || d.alphaBits != ab || d.luminanceBits != lb ||
|
|
|
724 |
d.redShift != rs || d.greenShift != gs || d.blueShift != bs || d.alphaShift != as || d.luminanceShift != ls ||
|
|
|
725 |
d.bitsPerPixel != bpp)
|
|
|
726 |
return false; //if the descriptor has a VGImageFormat, it must match the bits, shifts, and bpp
|
|
|
727 |
}
|
|
|
728 |
|
|
|
729 |
if((unsigned int)desc.internalFormat & ~(Color::PREMULTIPLIED | Color::NONLINEAR | Color::LUMINANCE))
|
|
|
730 |
return false; //invalid internal format
|
|
|
731 |
|
|
|
732 |
return true;
|
|
|
733 |
}
|
|
|
734 |
|
|
|
735 |
//==============================================================================================
|
|
|
736 |
|
|
|
737 |
//==============================================================================================
|
|
|
738 |
|
|
|
739 |
IntegerColor::IntegerColor(const Color& color)
|
|
|
740 |
{
|
|
|
741 |
r = (RIuint32)(color.r * 255.0f + 0.5f);
|
|
|
742 |
g = (RIuint32)(color.g * 255.0f + 0.5f);
|
|
|
743 |
b = (RIuint32)(color.b * 255.0f + 0.5f);
|
|
|
744 |
a = (RIuint32)(color.a * 255.0f + 0.5f);
|
|
|
745 |
}
|
|
|
746 |
|
|
|
747 |
//==============================================================================================
|
|
|
748 |
|
|
|
749 |
//==============================================================================================
|
|
|
750 |
|
|
|
751 |
/*-------------------------------------------------------------------*//*!
|
|
|
752 |
* \brief Constructs a blank image.
|
|
|
753 |
* \param
|
|
|
754 |
* \return
|
|
|
755 |
* \note
|
|
|
756 |
*//*-------------------------------------------------------------------*/
|
|
|
757 |
|
|
|
758 |
Image::Image(const Color::Descriptor& desc, int width, int height, VGbitfield allowedQuality) :
|
|
|
759 |
m_desc(desc),
|
|
|
760 |
m_width(width),
|
|
|
761 |
m_height(height),
|
|
|
762 |
m_allowedQuality(allowedQuality),
|
|
|
763 |
m_inUse(0),
|
|
|
764 |
m_stride(0),
|
|
|
765 |
m_data(NULL),
|
|
|
766 |
m_referenceCount(0),
|
|
|
767 |
m_ownsData(true),
|
|
|
768 |
m_parent(NULL),
|
|
|
769 |
m_storageOffsetX(0),
|
|
|
770 |
m_storageOffsetY(0),
|
|
|
771 |
m_unsafeData(false)
|
|
|
772 |
{
|
|
|
773 |
RI_ASSERT(Color::isValidDescriptor(m_desc));
|
|
|
774 |
RI_ASSERT(width > 0 && height > 0);
|
|
|
775 |
|
|
|
776 |
m_stride = (m_width*m_desc.bitsPerPixel+7)/8;
|
|
|
777 |
|
|
|
778 |
m_data = RI_NEW_ARRAY(RIuint8, m_stride*m_height); //throws bad_alloc
|
|
|
779 |
memset(m_data, 0, m_stride*m_height); //clear image
|
|
|
780 |
}
|
|
|
781 |
|
|
|
782 |
/*-------------------------------------------------------------------*//*!
|
|
|
783 |
* \brief Constructs an image that uses an external array for its data
|
|
|
784 |
* storage.
|
|
|
785 |
* \param
|
|
|
786 |
* \return
|
|
|
787 |
* \note This is meant for internal use to make blitting easier
|
|
|
788 |
* \note Now this is "tagged" into m_unsafeData if necessary.
|
|
|
789 |
* Using this constructor may then affect performance.
|
|
|
790 |
*//*-------------------------------------------------------------------*/
|
|
|
791 |
|
|
|
792 |
Image::Image(const Color::Descriptor& desc, int width, int height, int stride, RIuint8* data) :
|
|
|
793 |
m_desc(desc),
|
|
|
794 |
m_width(width),
|
|
|
795 |
m_height(height),
|
|
|
796 |
m_allowedQuality(0),
|
|
|
797 |
m_inUse(0),
|
|
|
798 |
m_stride(stride),
|
|
|
799 |
m_data(data),
|
|
|
800 |
m_referenceCount(0),
|
|
|
801 |
m_ownsData(false),
|
|
|
802 |
m_parent(NULL),
|
|
|
803 |
m_storageOffsetX(0),
|
|
|
804 |
m_storageOffsetY(0),
|
|
|
805 |
m_unsafeData(false)
|
|
|
806 |
{
|
|
|
807 |
RI_ASSERT(Color::isValidDescriptor(m_desc));
|
|
|
808 |
RI_ASSERT(width > 0 && height > 0);
|
|
|
809 |
RI_ASSERT(data);
|
|
|
810 |
setUnsafe(true); // External data always potentially unsafe, see note above.
|
|
|
811 |
}
|
|
|
812 |
|
|
|
813 |
/*-------------------------------------------------------------------*//*!
|
|
|
814 |
* \brief Construcs a child image.
|
|
|
815 |
* \param
|
|
|
816 |
* \return
|
|
|
817 |
* \note
|
|
|
818 |
*//*-------------------------------------------------------------------*/
|
|
|
819 |
|
|
|
820 |
Image::Image(Image* parent, int x, int y, int width, int height) :
|
|
|
821 |
m_desc(Color::formatToDescriptor(VG_sRGBA_8888)), //dummy initialization, will be overwritten below (can't read from parent->m_desc before knowing the pointer is valid)
|
|
|
822 |
m_width(width),
|
|
|
823 |
m_height(height),
|
|
|
824 |
m_allowedQuality(0),
|
|
|
825 |
m_inUse(0),
|
|
|
826 |
m_stride(0),
|
|
|
827 |
m_data(NULL),
|
|
|
828 |
m_referenceCount(0),
|
|
|
829 |
m_ownsData(false),
|
|
|
830 |
m_parent(parent),
|
|
|
831 |
m_storageOffsetX(0),
|
|
|
832 |
m_storageOffsetY(0),
|
|
|
833 |
m_unsafeData(false)
|
|
|
834 |
{
|
|
|
835 |
RI_ASSERT(parent);
|
|
|
836 |
RI_ASSERT(x >= 0 && y >= 0 && width > 0 && height > 0);
|
|
|
837 |
RI_ASSERT(RI_INT_ADDSATURATE(x,width) <= parent->m_width && RI_INT_ADDSATURATE(y,height) <= parent->m_height); //child image must be contained in parent
|
|
|
838 |
|
|
|
839 |
m_desc = parent->m_desc;
|
|
|
840 |
RI_ASSERT(Color::isValidDescriptor(m_desc));
|
|
|
841 |
m_allowedQuality = parent->m_allowedQuality;
|
|
|
842 |
m_stride = parent->m_stride;
|
|
|
843 |
m_data = parent->m_data;
|
|
|
844 |
m_storageOffsetX = parent->m_storageOffsetX + x;
|
|
|
845 |
m_storageOffsetY = parent->m_storageOffsetY + y;
|
|
|
846 |
|
|
|
847 |
//increase the reference and use count of the parent
|
|
|
848 |
addInUse();
|
|
|
849 |
parent->addInUse();
|
|
|
850 |
parent->addReference();
|
|
|
851 |
m_unsafeData = parent->m_unsafeData;
|
|
|
852 |
}
|
|
|
853 |
|
|
|
854 |
/*-------------------------------------------------------------------*//*!
|
|
|
855 |
* \brief Image destructor.
|
|
|
856 |
* \param
|
|
|
857 |
* \return
|
|
|
858 |
* \note
|
|
|
859 |
*//*-------------------------------------------------------------------*/
|
|
|
860 |
|
|
|
861 |
Image::~Image()
|
|
|
862 |
{
|
|
|
863 |
RI_ASSERT(m_referenceCount == 0);
|
|
|
864 |
|
|
|
865 |
if(m_parent)
|
|
|
866 |
{
|
|
|
867 |
//decrease the reference and use count of the parent
|
|
|
868 |
removeInUse();
|
|
|
869 |
m_parent->removeInUse();
|
|
|
870 |
if(!m_parent->removeReference())
|
|
|
871 |
RI_DELETE(m_parent);
|
|
|
872 |
}
|
|
|
873 |
RI_ASSERT(m_inUse == 0);
|
|
|
874 |
|
|
|
875 |
|
|
|
876 |
if(m_ownsData)
|
|
|
877 |
{
|
|
|
878 |
RI_ASSERT(!m_parent); //can't have parent if owns the data
|
|
|
879 |
RI_DELETE_ARRAY(m_data); //delete image data if we own it
|
|
|
880 |
}
|
|
|
881 |
}
|
|
|
882 |
|
|
|
883 |
/*-------------------------------------------------------------------*//*!
|
|
|
884 |
* \brief Returns true if the two images share pixels.
|
|
|
885 |
* \param
|
|
|
886 |
* \return
|
|
|
887 |
* \note
|
|
|
888 |
*//*-------------------------------------------------------------------*/
|
|
|
889 |
|
|
|
890 |
bool Image::overlaps(const Image* src) const
|
|
|
891 |
{
|
|
|
892 |
RI_ASSERT(src);
|
|
|
893 |
|
|
|
894 |
if(m_data != src->m_data)
|
|
|
895 |
return false; //images don't share data
|
|
|
896 |
|
|
|
897 |
//check if the image storage regions overlap
|
|
|
898 |
Rectangle r(m_storageOffsetX, m_storageOffsetY, m_width, m_height);
|
|
|
899 |
r.intersect(Rectangle(src->m_storageOffsetX, src->m_storageOffsetY, src->m_width, src->m_height));
|
|
|
900 |
if(!r.width || !r.height)
|
|
|
901 |
return false; //intersection is empty, images don't overlap
|
|
|
902 |
|
|
|
903 |
return true;
|
|
|
904 |
}
|
|
|
905 |
|
|
|
906 |
/**
|
|
|
907 |
* \brief Expand log2 bpp packed pixel (single value) to 8 bits. This will
|
|
|
908 |
* Result in 8, 4, or 2 same pixel values to be packed into the return value.
|
|
|
909 |
*/
|
|
|
910 |
RI_INLINE static RIuint32 logExpand8(RIuint32 packedColor, int srcBits)
|
|
|
911 |
{
|
|
|
912 |
RI_ASSERT(srcBits == 4 || srcBits == 2 || srcBits == 1);
|
|
|
913 |
RIuint32 ret = packedColor;
|
|
|
914 |
int n = srcBits;
|
|
|
915 |
while (n < 8)
|
|
|
916 |
{
|
|
|
917 |
ret |= ret << n;
|
|
|
918 |
n += n;
|
|
|
919 |
}
|
|
|
920 |
return ret;
|
|
|
921 |
}
|
|
|
922 |
|
|
|
923 |
RI_INLINE void Image::fillPacked(RIuint32 packedColor)
|
|
|
924 |
{
|
|
|
925 |
RIuint32 pc = packedColor;
|
|
|
926 |
int Bpp = m_desc.bitsPerPixel / 8;
|
|
|
927 |
int nSetsPerScanline = m_width;
|
|
|
928 |
|
|
|
929 |
RI_ASSERT(nSetsPerScanline);
|
|
|
930 |
// \todo 1bpp and 4bpp mask formats must be supported. fillPackedPixels should
|
|
|
931 |
// automatically work, but riMemSet32 path needs a bit more logic.
|
|
|
932 |
// \note < 8bpp formats are always rounded to 8-bit boundaries at scanline end.
|
|
|
933 |
// It is assumed that the "padding bits" may be filled.
|
|
|
934 |
|
|
|
935 |
if (m_desc.bitsPerPixel < 8)
|
|
|
936 |
{
|
|
|
937 |
pc = logExpand8(packedColor, m_desc.bitsPerPixel);
|
|
|
938 |
Bpp = 1;
|
|
|
939 |
nSetsPerScanline = (m_width * m_desc.bitsPerPixel + 7) / 8;
|
|
|
940 |
//nSetsPerScanline /= (8/m_desc.bitsPerPixel);
|
|
|
941 |
}
|
|
|
942 |
|
|
|
943 |
RI_ASSERT(Bpp <= 4 && Bpp >= 1);
|
|
|
944 |
|
|
|
945 |
if (m_stride == ((m_desc.bitsPerPixel*m_width+7)/8))
|
|
|
946 |
{
|
|
|
947 |
const int nPixels = nSetsPerScanline * m_height;
|
|
|
948 |
riMemSet32(m_data, pc, nPixels, Bpp);
|
|
|
949 |
} else
|
|
|
950 |
{
|
|
|
951 |
RIuint8 *ptr = (RIuint8*)m_data;
|
|
|
952 |
// set per-scanline
|
|
|
953 |
for (int y = 0; y < m_height; y++)
|
|
|
954 |
{
|
|
|
955 |
riMemSet32(ptr, pc, nSetsPerScanline, Bpp);
|
|
|
956 |
ptr += m_stride;
|
|
|
957 |
}
|
|
|
958 |
}
|
|
|
959 |
}
|
|
|
960 |
|
|
|
961 |
/*-------------------------------------------------------------------*//*!
|
|
|
962 |
* \brief Clears a rectangular portion of an image with the given clear color.
|
|
|
963 |
* \param
|
|
|
964 |
* \return
|
|
|
965 |
* \note
|
|
|
966 |
*//*-------------------------------------------------------------------*/
|
|
|
967 |
|
|
|
968 |
void Image::clear(const Color& clearColor, int x, int y, int w, int h)
|
|
|
969 |
{
|
|
|
970 |
RI_ASSERT(m_data);
|
|
|
971 |
RI_ASSERT(m_referenceCount > 0);
|
|
|
972 |
|
|
|
973 |
|
|
|
974 |
//intersect clear region with image bounds
|
|
|
975 |
Rectangle r(0,0,m_width,m_height);
|
|
|
976 |
r.intersect(Rectangle(x,y,w,h));
|
|
|
977 |
if(!r.width || !r.height)
|
|
|
978 |
return; //intersection is empty or one of the rectangles is invalid
|
|
|
979 |
|
|
|
980 |
Color col = clearColor;
|
|
|
981 |
col.clamp();
|
|
|
982 |
col.convert(getDescriptor().internalFormat);
|
|
|
983 |
|
|
|
984 |
IntegerColor ic = IntegerColor(col);
|
|
|
985 |
ic.truncateColor(getDescriptor());
|
|
|
986 |
const RIuint32 c = ic.getPackedColor(getDescriptor());
|
|
|
987 |
|
|
|
988 |
if (r.width == getWidth() && r.height == getHeight() && !m_parent)
|
|
|
989 |
fillPacked(c);
|
|
|
990 |
else
|
|
|
991 |
{
|
|
|
992 |
fillPackedRectangle(r.x, r.y, r.width, r.height, c);
|
|
|
993 |
}
|
|
|
994 |
}
|
|
|
995 |
|
|
|
996 |
#if 0
|
|
|
997 |
static RIfloat ditherChannel(RIfloat c, int bits, RIfloat m)
|
|
|
998 |
{
|
|
|
999 |
RIfloat fc = c * (RIfloat)((1<<bits)-1);
|
|
|
1000 |
RIfloat ic = (RIfloat)floor(fc);
|
|
|
1001 |
if(fc - ic > m) ic += 1.0f;
|
|
|
1002 |
return RI_MIN(ic / (RIfloat)((1<<bits)-1), 1.0f);
|
|
|
1003 |
}
|
|
|
1004 |
#endif
|
|
|
1005 |
|
|
|
1006 |
static void computeBlitRegion(int& sx, int& sy, int& dx, int& dy, int& w, int& h, int srcWidth, int srcHeight, int dstWidth, int dstHeight)
|
|
|
1007 |
{
|
|
|
1008 |
RI_ASSERT(w > 0 && h > 0);
|
|
|
1009 |
sx = RI_INT_MIN(RI_INT_MAX(sx, (int)(RI_INT32_MIN>>2)), (int)(RI_INT32_MAX>>2));
|
|
|
1010 |
sy = RI_INT_MIN(RI_INT_MAX(sy, (int)(RI_INT32_MIN>>2)), (int)(RI_INT32_MAX>>2));
|
|
|
1011 |
dx = RI_INT_MIN(RI_INT_MAX(dx, (int)(RI_INT32_MIN>>2)), (int)(RI_INT32_MAX>>2));
|
|
|
1012 |
dy = RI_INT_MIN(RI_INT_MAX(dy, (int)(RI_INT32_MIN>>2)), (int)(RI_INT32_MAX>>2));
|
|
|
1013 |
w = RI_INT_MIN(w, (int)(RI_INT32_MAX>>2));
|
|
|
1014 |
h = RI_INT_MIN(h, (int)(RI_INT32_MAX>>2));
|
|
|
1015 |
int srcsx = sx, srcex = sx + w, dstsx = dx, dstex = dx + w;
|
|
|
1016 |
if(srcsx < 0)
|
|
|
1017 |
{
|
|
|
1018 |
dstsx -= srcsx;
|
|
|
1019 |
srcsx = 0;
|
|
|
1020 |
}
|
|
|
1021 |
if(srcex > srcWidth)
|
|
|
1022 |
{
|
|
|
1023 |
dstex -= srcex - srcWidth;
|
|
|
1024 |
srcex = srcWidth;
|
|
|
1025 |
}
|
|
|
1026 |
if(dstsx < 0)
|
|
|
1027 |
{
|
|
|
1028 |
srcsx -= dstsx;
|
|
|
1029 |
dstsx = 0;
|
|
|
1030 |
}
|
|
|
1031 |
if(dstex > dstWidth)
|
|
|
1032 |
{
|
|
|
1033 |
srcex -= dstex - dstWidth;
|
|
|
1034 |
dstex = dstWidth;
|
|
|
1035 |
}
|
|
|
1036 |
RI_ASSERT(srcsx >= 0 && dstsx >= 0 && srcex <= srcWidth && dstex <= dstWidth);
|
|
|
1037 |
w = srcex - srcsx;
|
|
|
1038 |
RI_ASSERT(w == dstex - dstsx);
|
|
|
1039 |
|
|
|
1040 |
int srcsy = sy, srcey = sy + h, dstsy = dy, dstey = dy + h;
|
|
|
1041 |
if(srcsy < 0)
|
|
|
1042 |
{
|
|
|
1043 |
dstsy -= srcsy;
|
|
|
1044 |
srcsy = 0;
|
|
|
1045 |
}
|
|
|
1046 |
if(srcey > srcHeight)
|
|
|
1047 |
{
|
|
|
1048 |
dstey -= srcey - srcHeight;
|
|
|
1049 |
srcey = srcHeight;
|
|
|
1050 |
}
|
|
|
1051 |
if(dstsy < 0)
|
|
|
1052 |
{
|
|
|
1053 |
srcsy -= dstsy;
|
|
|
1054 |
dstsy = 0;
|
|
|
1055 |
}
|
|
|
1056 |
if(dstey > dstHeight)
|
|
|
1057 |
{
|
|
|
1058 |
srcey -= dstey - dstHeight;
|
|
|
1059 |
dstey = dstHeight;
|
|
|
1060 |
}
|
|
|
1061 |
RI_ASSERT(srcsy >= 0 && dstsy >= 0 && srcey <= srcHeight && dstey <= dstHeight);
|
|
|
1062 |
h = srcey - srcsy;
|
|
|
1063 |
RI_ASSERT(h == dstey - dstsy);
|
|
|
1064 |
sx = srcsx;
|
|
|
1065 |
sy = srcsy;
|
|
|
1066 |
dx = dstsx;
|
|
|
1067 |
dy = dstsy;
|
|
|
1068 |
}
|
|
|
1069 |
|
|
|
1070 |
/*-------------------------------------------------------------------*//*!
|
|
|
1071 |
* \brief Blits a source region to destination. Source and destination
|
|
|
1072 |
* can overlap.
|
|
|
1073 |
* \param
|
|
|
1074 |
* \return
|
|
|
1075 |
* \note
|
|
|
1076 |
*//*-------------------------------------------------------------------*/
|
|
|
1077 |
|
|
|
1078 |
// \todo Extract dithering kernel and put it into the blitter
|
|
|
1079 |
#if 0
|
|
|
1080 |
void Image::blit(VGContext* context, const Image* src, int sx, int sy, int dx, int dy, int w, int h, bool dither)
|
|
|
1081 |
{
|
|
|
1082 |
//img=>img: vgCopyImage
|
|
|
1083 |
//img=>user: vgGetImageSubData
|
|
|
1084 |
//user=>img: vgImageSubData
|
|
|
1085 |
|
|
|
1086 |
// \todo Implement dither to blitter.
|
|
|
1087 |
this->blit(context, src, sx, sy, dx, dy, w, h, NULL, dither);
|
|
|
1088 |
RI_ASSERT(src.m_data); //source exists
|
|
|
1089 |
RI_ASSERT(m_data); //destination exists
|
|
|
1090 |
RI_ASSERT(m_referenceCount > 0 && src.m_referenceCount > 0);
|
|
|
1091 |
|
|
|
1092 |
computeBlitRegion(sx, sy, dx, dy, w, h, src.m_width, src.m_height, m_width, m_height);
|
|
|
1093 |
if(w <= 0 || h <= 0)
|
|
|
1094 |
return; //zero area
|
|
|
1095 |
|
|
|
1096 |
Array<Color> tmp;
|
|
|
1097 |
tmp.resize(w*h); //throws bad_alloc
|
|
|
1098 |
|
|
|
1099 |
//copy source region to tmp
|
|
|
1100 |
for(int j=0;j<h;j++)
|
|
|
1101 |
{
|
|
|
1102 |
for(int i=0;i<w;i++)
|
|
|
1103 |
{
|
|
|
1104 |
Color c = src.readPixel(sx + i, sy + j);
|
|
|
1105 |
c.convert(m_desc.internalFormat);
|
|
|
1106 |
tmp[j*w+i] = c;
|
|
|
1107 |
}
|
|
|
1108 |
}
|
|
|
1109 |
|
|
|
1110 |
int rbits = m_desc.redBits, gbits = m_desc.greenBits, bbits = m_desc.blueBits, abits = m_desc.alphaBits;
|
|
|
1111 |
if(m_desc.isLuminance())
|
|
|
1112 |
{
|
|
|
1113 |
rbits = gbits = bbits = m_desc.luminanceBits;
|
|
|
1114 |
abits = 0;
|
|
|
1115 |
}
|
|
|
1116 |
|
|
|
1117 |
//write tmp to destination region
|
|
|
1118 |
for(int j=0;j<h;j++)
|
|
|
1119 |
{
|
|
|
1120 |
for(int i=0;i<w;i++)
|
|
|
1121 |
{
|
|
|
1122 |
Color col = tmp[j*w+i];
|
|
|
1123 |
|
|
|
1124 |
if(dither)
|
|
|
1125 |
{
|
|
|
1126 |
static const int matrix[16] = {
|
|
|
1127 |
0, 8, 2, 10,
|
|
|
1128 |
12, 4, 14, 6,
|
|
|
1129 |
3, 11, 1, 9,
|
|
|
1130 |
15, 7, 13, 5};
|
|
|
1131 |
int x = i & 3;
|
|
|
1132 |
int y = j & 3;
|
|
|
1133 |
RIfloat m = matrix[y*4+x] / 16.0f;
|
|
|
1134 |
|
|
|
1135 |
if(rbits) col.r = ditherChannel(col.r, rbits, m);
|
|
|
1136 |
if(gbits) col.g = ditherChannel(col.g, gbits, m);
|
|
|
1137 |
if(bbits) col.b = ditherChannel(col.b, bbits, m);
|
|
|
1138 |
if(abits) col.a = ditherChannel(col.a, abits, m);
|
|
|
1139 |
}
|
|
|
1140 |
|
|
|
1141 |
writePixel(dx + i, dy + j, col);
|
|
|
1142 |
}
|
|
|
1143 |
}
|
|
|
1144 |
}
|
|
|
1145 |
#endif
|
|
|
1146 |
|
|
|
1147 |
/**
|
|
|
1148 |
* \brief Common body for drawImage-functions (one is the actual drawImage, and the
|
|
|
1149 |
* other one is used for scissored image-set operations.
|
|
|
1150 |
* \todo Reorganize all image draw operations to use this function.
|
|
|
1151 |
*/
|
|
|
1152 |
static bool drawImageBody(VGContext* context, Image* image, const Matrix3x3& userToSurfaceMatrix,
|
|
|
1153 |
VGImageQuality imageQuality,
|
|
|
1154 |
VGBlendMode blendMode,
|
|
|
1155 |
bool hasMasking,
|
|
|
1156 |
bool hasColorTransform,
|
|
|
1157 |
VGImageMode imageMode)
|
|
|
1158 |
{
|
|
|
1159 |
Drawable* drawable = context->getCurrentDrawable();
|
|
|
1160 |
if(!drawable)
|
|
|
1161 |
return false; //no EGL surface is current at the moment
|
|
|
1162 |
|
|
|
1163 |
Image* img = (Image*)image;
|
|
|
1164 |
//transform image corners into the surface space
|
|
|
1165 |
Vector3 p0(0, 0, 1);
|
|
|
1166 |
Vector3 p1(0, (RIfloat)img->getHeight(), 1);
|
|
|
1167 |
Vector3 p2((RIfloat)img->getWidth(), (RIfloat)img->getHeight(), 1);
|
|
|
1168 |
Vector3 p3((RIfloat)img->getWidth(), 0, 1);
|
|
|
1169 |
|
|
|
1170 |
p0 = userToSurfaceMatrix * p0;
|
|
|
1171 |
p1 = userToSurfaceMatrix * p1;
|
|
|
1172 |
p2 = userToSurfaceMatrix * p2;
|
|
|
1173 |
p3 = userToSurfaceMatrix * p3;
|
|
|
1174 |
if(p0.z <= 0.0f || p1.z <= 0.0f || p2.z <= 0.0f || p3.z <= 0.0f)
|
|
|
1175 |
return false;
|
|
|
1176 |
|
|
|
1177 |
//projection
|
|
|
1178 |
p0 *= 1.0f/p0.z;
|
|
|
1179 |
p1 *= 1.0f/p1.z;
|
|
|
1180 |
p2 *= 1.0f/p2.z;
|
|
|
1181 |
p3 *= 1.0f/p3.z;
|
|
|
1182 |
|
|
|
1183 |
Rasterizer& rasterizer = context->m_rasterizer;
|
|
|
1184 |
rasterizer.clear();
|
|
|
1185 |
|
|
|
1186 |
if(context->m_scissoring)
|
|
|
1187 |
rasterizer.setScissor(context->m_scissor); //throws bad_alloc
|
|
|
1188 |
|
|
|
1189 |
PixelPipe& pixelPipe = context->m_pixelPipe;
|
|
|
1190 |
pixelPipe.setTileFillColor(context->m_tileFillColor);
|
|
|
1191 |
pixelPipe.setPaint((Paint*)context->m_fillPaint);
|
|
|
1192 |
const bool aa = imageQuality == VG_IMAGE_QUALITY_NONANTIALIASED ? false : true;
|
|
|
1193 |
rasterizer.setAntiAliasing(aa);
|
|
|
1194 |
pixelPipe.setImageQuality(imageQuality);
|
|
|
1195 |
pixelPipe.setBlendMode(blendMode);
|
|
|
1196 |
pixelPipe.setRenderToMask(false);
|
|
|
1197 |
pixelPipe.setDrawable(drawable);
|
|
|
1198 |
pixelPipe.setMask(hasMasking);
|
|
|
1199 |
pixelPipe.setColorTransform(hasColorTransform, context->m_colorTransformValues);
|
|
|
1200 |
|
|
|
1201 |
Matrix3x3 surfaceToImageMatrix = userToSurfaceMatrix;
|
|
|
1202 |
Matrix3x3 surfaceToPaintMatrix = userToSurfaceMatrix * context->m_fillPaintToUser;
|
|
|
1203 |
if(surfaceToImageMatrix.invert() && surfaceToPaintMatrix.invert())
|
|
|
1204 |
{
|
|
|
1205 |
VGImageMode imode = imageMode;
|
|
|
1206 |
|
|
|
1207 |
if(!surfaceToPaintMatrix.isAffine())
|
|
|
1208 |
imode = VG_DRAW_IMAGE_NORMAL; //if paint matrix is not affine, always use normal image mode
|
|
|
1209 |
|
|
|
1210 |
surfaceToPaintMatrix[2].set(0,0,1); //force affine
|
|
|
1211 |
|
|
|
1212 |
pixelPipe.setImage(img, imode);
|
|
|
1213 |
pixelPipe.setSurfaceToPaintMatrix(surfaceToPaintMatrix);
|
|
|
1214 |
pixelPipe.setSurfaceToImageMatrix(surfaceToImageMatrix);
|
|
|
1215 |
pixelPipe.prepareSpanUniforms(aa);
|
|
|
1216 |
rasterizer.setup(0, 0, drawable->getWidth(), drawable->getHeight(), VG_EVEN_ODD, &pixelPipe);
|
|
|
1217 |
|
|
|
1218 |
rasterizer.addEdge(Vector2(p0.x,p0.y), Vector2(p1.x,p1.y)); //throws bad_alloc
|
|
|
1219 |
rasterizer.addEdge(Vector2(p1.x,p1.y), Vector2(p2.x,p2.y)); //throws bad_alloc
|
|
|
1220 |
rasterizer.addEdge(Vector2(p2.x,p2.y), Vector2(p3.x,p3.y)); //throws bad_alloc
|
|
|
1221 |
rasterizer.addEdge(Vector2(p3.x,p3.y), Vector2(p0.x,p0.y)); //throws bad_alloc
|
|
|
1222 |
|
|
|
1223 |
rasterizer.fill(); //throws bad_alloc
|
|
|
1224 |
}
|
|
|
1225 |
|
|
|
1226 |
return true;
|
|
|
1227 |
}
|
|
|
1228 |
|
|
|
1229 |
/*-------------------------------------------------------------------*//*!
|
|
|
1230 |
* \brief Converts from multisampled format to display format.
|
|
|
1231 |
* \param unsafeInput Data may contain incorrect values (user data)
|
|
|
1232 |
* \return
|
|
|
1233 |
* \note May throw std::bad_alloc on cases where blitting within the
|
|
|
1234 |
* same buffer and overlapping regions (this may change in the
|
|
|
1235 |
* future).
|
|
|
1236 |
*//*-------------------------------------------------------------------*/
|
|
|
1237 |
|
|
|
1238 |
void Image::blit(VGContext* context, const Image* src,
|
|
|
1239 |
int sx, int sy, int dx, int dy, int w, int h,
|
|
|
1240 |
Array<Rectangle>* scissors,
|
|
|
1241 |
bool dither)
|
|
|
1242 |
{
|
|
|
1243 |
bool overlap = false;
|
|
|
1244 |
(void)dither;
|
|
|
1245 |
DynamicBlitter& blitter = context->getBlitter();
|
|
|
1246 |
|
|
|
1247 |
//RI_ASSERT(!src->isInUse(this));
|
|
|
1248 |
//int isx = sx, isy = sy, idx = dx, idy = dy, iw = w, ih = h;
|
|
|
1249 |
|
|
|
1250 |
computeBlitRegion(sx, sy, dx, dy, w, h, src->getWidth(), src->getHeight(), m_width, m_height);
|
|
|
1251 |
|
|
|
1252 |
if(w <= 0 || h <= 0)
|
|
|
1253 |
return; //zero area
|
|
|
1254 |
|
|
|
1255 |
if (this->m_data == src->m_data)
|
|
|
1256 |
{
|
|
|
1257 |
// The images may overlap.
|
|
|
1258 |
int minsx = RI_INT_MIN(sx, dx);
|
|
|
1259 |
int minsy = RI_INT_MIN(sy, dy);
|
|
|
1260 |
int maxsx = RI_INT_MAX(sx, dx);
|
|
|
1261 |
int maxsy = RI_INT_MAX(sy, dy);
|
|
|
1262 |
|
|
|
1263 |
if ((maxsx < (minsx + w)) && (maxsy < (minsy + h)))
|
|
|
1264 |
{
|
|
|
1265 |
overlap = true;
|
|
|
1266 |
}
|
|
|
1267 |
}
|
|
|
1268 |
|
|
|
1269 |
if (!scissors)
|
|
|
1270 |
{
|
|
|
1271 |
// Currently the blitter does not support scissors
|
|
|
1272 |
if (!overlap)
|
|
|
1273 |
{
|
|
|
1274 |
blitter.prepareBlit(this, src, sx+src->m_storageOffsetX, sy+src->m_storageOffsetY,
|
|
|
1275 |
dx+m_storageOffsetX, dy+m_storageOffsetY, w, h);
|
|
|
1276 |
blitter.blit();
|
|
|
1277 |
} else
|
|
|
1278 |
{
|
|
|
1279 |
Image temp(src->getDescriptor(), w, h, VG_IMAGE_QUALITY_NONANTIALIASED);
|
|
|
1280 |
blitter.prepareBlit(&temp, src, sx+src->m_storageOffsetX, sy+src->m_storageOffsetY, 0, 0, w, h);
|
|
|
1281 |
blitter.blit();
|
|
|
1282 |
blitter.prepareBlit(this, &temp, 0, 0, dx+m_storageOffsetX, dy+m_storageOffsetY, w, h);
|
|
|
1283 |
blitter.blit();
|
|
|
1284 |
}
|
|
|
1285 |
} else
|
|
|
1286 |
{
|
|
|
1287 |
// For the moment, use the generic poly-rasterizer for scissored images.
|
|
|
1288 |
if (!overlap)
|
|
|
1289 |
{
|
|
|
1290 |
// Create a child image
|
|
|
1291 |
Image blitImage((Image*)src, sx, sy, w, h);
|
|
|
1292 |
Matrix3x3 tx;
|
|
|
1293 |
tx.set(1, 0, dx, 0, 1, dy, 0, 0, 1);
|
|
|
1294 |
|
|
|
1295 |
drawImageBody(context, &blitImage, tx,
|
|
|
1296 |
VG_IMAGE_QUALITY_NONANTIALIASED,
|
|
|
1297 |
VG_BLEND_SRC,
|
|
|
1298 |
false,
|
|
|
1299 |
false,
|
|
|
1300 |
VG_DRAW_IMAGE_NORMAL);
|
|
|
1301 |
} else
|
|
|
1302 |
{
|
|
|
1303 |
// Create a copy of the source region
|
|
|
1304 |
Image temp(src->getDescriptor(), w, h, VG_IMAGE_QUALITY_NONANTIALIASED);
|
|
|
1305 |
blitter.prepareBlit(&temp, src, sx, sy, 0, 0, w, h);
|
|
|
1306 |
blitter.blit();
|
|
|
1307 |
|
|
|
1308 |
Image blitImage((Image*)src, sx, sy, w, h);
|
|
|
1309 |
Matrix3x3 tx;
|
|
|
1310 |
tx.set(1, 0, dx, 0, 1, dy, 0, 0, 1);
|
|
|
1311 |
|
|
|
1312 |
drawImageBody(context, &blitImage, tx,
|
|
|
1313 |
VG_IMAGE_QUALITY_NONANTIALIASED,
|
|
|
1314 |
VG_BLEND_SRC,
|
|
|
1315 |
false,
|
|
|
1316 |
false,
|
|
|
1317 |
VG_DRAW_IMAGE_NORMAL);
|
|
|
1318 |
}
|
|
|
1319 |
}
|
|
|
1320 |
|
|
|
1321 |
}
|
|
|
1322 |
|
|
|
1323 |
/*-------------------------------------------------------------------*//*!
|
|
|
1324 |
* \brief Returns the color at pixel (x,y).
|
|
|
1325 |
* \param
|
|
|
1326 |
* \return
|
|
|
1327 |
* \note
|
|
|
1328 |
*//*-------------------------------------------------------------------*/
|
|
|
1329 |
|
|
|
1330 |
Color Image::readPixel(int x, int y) const
|
|
|
1331 |
{
|
|
|
1332 |
const RIuint32 p = readPackedPixel(x, y);
|
|
|
1333 |
|
|
|
1334 |
Color c;
|
|
|
1335 |
c.unpack(p, m_desc);
|
|
|
1336 |
return c;
|
|
|
1337 |
}
|
|
|
1338 |
|
|
|
1339 |
/*-------------------------------------------------------------------*//*!
|
|
|
1340 |
* \brief Writes the color to pixel (x,y). Internal color formats must
|
|
|
1341 |
* match.
|
|
|
1342 |
* \param
|
|
|
1343 |
* \return
|
|
|
1344 |
* \note
|
|
|
1345 |
*//*-------------------------------------------------------------------*/
|
|
|
1346 |
|
|
|
1347 |
void Image::writePixel(int x, int y, const Color& c)
|
|
|
1348 |
{
|
|
|
1349 |
RI_ASSERT(c.getInternalFormat() == m_desc.internalFormat);
|
|
|
1350 |
|
|
|
1351 |
RIuint32 p = c.pack(m_desc);
|
|
|
1352 |
writePackedPixel(x, y, p);
|
|
|
1353 |
}
|
|
|
1354 |
|
|
|
1355 |
/*-------------------------------------------------------------------*//*!
|
|
|
1356 |
* \brief Writes a filtered color to destination surface
|
|
|
1357 |
* \param
|
|
|
1358 |
* \return
|
|
|
1359 |
* \note
|
|
|
1360 |
*//*-------------------------------------------------------------------*/
|
|
|
1361 |
|
|
|
1362 |
void Image::writeFilteredPixel(int i, int j, const Color& color, VGbitfield channelMask)
|
|
|
1363 |
{
|
|
|
1364 |
//section 3.4.4: before color space conversion, premultiplied colors are
|
|
|
1365 |
//clamped to alpha, and the color is converted to nonpremultiplied format
|
|
|
1366 |
//section 11.2: how to deal with channel mask
|
|
|
1367 |
//step 1
|
|
|
1368 |
Color f = color;
|
|
|
1369 |
f.clamp(); //vgColorMatrix and vgLookups can produce colors that exceed alpha or [0,1] range
|
|
|
1370 |
|
|
|
1371 |
//step 2: color space conversion
|
|
|
1372 |
f.convert((Color::InternalFormat)(m_desc.internalFormat & (Color::NONLINEAR | Color::LUMINANCE)));
|
|
|
1373 |
|
|
|
1374 |
//step 3: read the destination color and convert it to nonpremultiplied
|
|
|
1375 |
Color d = readPixel(i,j);
|
|
|
1376 |
d.unpremultiply();
|
|
|
1377 |
RI_ASSERT(d.getInternalFormat() == f.getInternalFormat());
|
|
|
1378 |
|
|
|
1379 |
//step 4: replace the destination channels specified by the channelMask (channelmask is ignored for luminance formats)
|
|
|
1380 |
if(!m_desc.isLuminance())
|
|
|
1381 |
{ //rgba format => use channelmask
|
|
|
1382 |
if(channelMask & VG_RED)
|
|
|
1383 |
d.r = f.r;
|
|
|
1384 |
if(channelMask & VG_GREEN)
|
|
|
1385 |
d.g = f.g;
|
|
|
1386 |
if(channelMask & VG_BLUE)
|
|
|
1387 |
d.b = f.b;
|
|
|
1388 |
if(channelMask & VG_ALPHA)
|
|
|
1389 |
d.a = f.a;
|
|
|
1390 |
}
|
|
|
1391 |
else d = f;
|
|
|
1392 |
|
|
|
1393 |
//step 5: if destination is premultiplied, convert to premultiplied format
|
|
|
1394 |
if(m_desc.isPremultiplied())
|
|
|
1395 |
d.premultiply();
|
|
|
1396 |
//write the color to destination
|
|
|
1397 |
writePixel(i,j,d);
|
|
|
1398 |
}
|
|
|
1399 |
|
|
|
1400 |
/*-------------------------------------------------------------------*//*!
|
|
|
1401 |
* \brief Reads the pixel (x,y) and converts it into an alpha mask value.
|
|
|
1402 |
* \param
|
|
|
1403 |
* \return
|
|
|
1404 |
* \note
|
|
|
1405 |
*//*-------------------------------------------------------------------*/
|
|
|
1406 |
|
|
|
1407 |
RIfloat Image::readMaskPixel(int x, int y) const
|
|
|
1408 |
{
|
|
|
1409 |
RI_ASSERT(m_data);
|
|
|
1410 |
RI_ASSERT(x >= 0 && x < m_width);
|
|
|
1411 |
RI_ASSERT(y >= 0 && y < m_height);
|
|
|
1412 |
RI_ASSERT(m_referenceCount > 0);
|
|
|
1413 |
|
|
|
1414 |
Color c = readPixel(x,y);
|
|
|
1415 |
if(m_desc.isLuminance())
|
|
|
1416 |
{
|
|
|
1417 |
return c.r;
|
|
|
1418 |
}
|
|
|
1419 |
else
|
|
|
1420 |
{ //rgba
|
|
|
1421 |
if(m_desc.alphaBits)
|
|
|
1422 |
return c.a;
|
|
|
1423 |
return c.r;
|
|
|
1424 |
}
|
|
|
1425 |
}
|
|
|
1426 |
|
|
|
1427 |
/*-------------------------------------------------------------------*//*!
|
|
|
1428 |
* \brief Writes the alpha mask to pixel (x,y).
|
|
|
1429 |
* \param
|
|
|
1430 |
* \return
|
|
|
1431 |
* \note Overwrites color.
|
|
|
1432 |
*//*-------------------------------------------------------------------*/
|
|
|
1433 |
|
|
|
1434 |
void Image::writeMaskPixel(int x, int y, RIfloat m)
|
|
|
1435 |
{
|
|
|
1436 |
RI_ASSERT(m_data);
|
|
|
1437 |
RI_ASSERT(x >= 0 && x < m_width);
|
|
|
1438 |
RI_ASSERT(y >= 0 && y < m_height);
|
|
|
1439 |
RI_ASSERT(m_referenceCount > 0);
|
|
|
1440 |
|
|
|
1441 |
//if luminance or no alpha, red channel will be used, otherwise alpha channel will be used
|
|
|
1442 |
writePixel(x, y, Color(m,m,m,m,m_desc.internalFormat));
|
|
|
1443 |
}
|
|
|
1444 |
|
|
|
1445 |
/*-------------------------------------------------------------------*//*!
|
|
|
1446 |
* \brief Reads a texel (u,v) at the given mipmap level. Tiling modes and
|
|
|
1447 |
* color space conversion are applied. Outputs color in premultiplied
|
|
|
1448 |
* format.
|
|
|
1449 |
* \param
|
|
|
1450 |
* \return
|
|
|
1451 |
* \note
|
|
|
1452 |
*//*-------------------------------------------------------------------*/
|
|
|
1453 |
|
|
|
1454 |
Color Image::readTexel(int u, int v, int level, VGTilingMode tilingMode, const Color& tileFillColor) const
|
|
|
1455 |
{
|
|
|
1456 |
const Image* image = this;
|
|
|
1457 |
if( level > 0 )
|
|
|
1458 |
{
|
|
|
1459 |
RI_ASSERT(false);
|
|
|
1460 |
}
|
|
|
1461 |
RI_ASSERT(image);
|
|
|
1462 |
|
|
|
1463 |
Color p;
|
|
|
1464 |
if(tilingMode == VG_TILE_FILL)
|
|
|
1465 |
{
|
|
|
1466 |
if(u < 0 || v < 0 || u >= image->m_width || v >= image->m_height)
|
|
|
1467 |
p = tileFillColor;
|
|
|
1468 |
else
|
|
|
1469 |
p = image->readPixel(u, v);
|
|
|
1470 |
}
|
|
|
1471 |
else if(tilingMode == VG_TILE_PAD)
|
|
|
1472 |
{
|
|
|
1473 |
u = RI_INT_MIN(RI_INT_MAX(u,0),image->m_width-1);
|
|
|
1474 |
v = RI_INT_MIN(RI_INT_MAX(v,0),image->m_height-1);
|
|
|
1475 |
p = image->readPixel(u, v);
|
|
|
1476 |
}
|
|
|
1477 |
else if(tilingMode == VG_TILE_REPEAT)
|
|
|
1478 |
{
|
|
|
1479 |
u = RI_INT_MOD(u, image->m_width);
|
|
|
1480 |
v = RI_INT_MOD(v, image->m_height);
|
|
|
1481 |
p = image->readPixel(u, v);
|
|
|
1482 |
}
|
|
|
1483 |
else
|
|
|
1484 |
{
|
|
|
1485 |
RI_ASSERT(tilingMode == VG_TILE_REFLECT);
|
|
|
1486 |
|
|
|
1487 |
u = RI_INT_MOD(u, image->m_width*2);
|
|
|
1488 |
v = RI_INT_MOD(v, image->m_height*2);
|
|
|
1489 |
if( u >= image->m_width ) u = image->m_width*2-1 - u;
|
|
|
1490 |
if( v >= image->m_height ) v = image->m_height*2-1 - v;
|
|
|
1491 |
p = image->readPixel(u, v);
|
|
|
1492 |
}
|
|
|
1493 |
|
|
|
1494 |
p.premultiply(); //interpolate in premultiplied format
|
|
|
1495 |
return p;
|
|
|
1496 |
}
|
|
|
1497 |
|
|
|
1498 |
/*-------------------------------------------------------------------*//*!
|
|
|
1499 |
* \brief Maps point (x,y) to an image and returns a filtered,
|
|
|
1500 |
* premultiplied color value.
|
|
|
1501 |
* \param
|
|
|
1502 |
* \return
|
|
|
1503 |
* \note
|
|
|
1504 |
*//*-------------------------------------------------------------------*/
|
|
|
1505 |
|
|
|
1506 |
Color Image::resample(RIfloat x, RIfloat y, const Matrix3x3& surfaceToImage, VGImageQuality quality, VGTilingMode tilingMode, const Color& tileFillColor) //throws bad_alloc
|
|
|
1507 |
{
|
|
|
1508 |
RI_ASSERT(m_referenceCount > 0);
|
|
|
1509 |
|
|
|
1510 |
VGbitfield aq = getAllowedQuality();
|
|
|
1511 |
aq &= (VGbitfield)quality;
|
|
|
1512 |
|
|
|
1513 |
Vector3 uvw(x,y,1.0f);
|
|
|
1514 |
uvw = surfaceToImage * uvw;
|
|
|
1515 |
RIfloat oow = 1.0f / uvw.z;
|
|
|
1516 |
uvw *= oow;
|
|
|
1517 |
|
|
|
1518 |
#if 0
|
|
|
1519 |
if(aq & VG_IMAGE_QUALITY_BETTER)
|
|
|
1520 |
{ //EWA on mipmaps
|
|
|
1521 |
makeMipMaps(); //throws bad_alloc
|
|
|
1522 |
|
|
|
1523 |
Color::InternalFormat procFormat = (Color::InternalFormat)(m_desc.internalFormat | Color::PREMULTIPLIED);
|
|
|
1524 |
|
|
|
1525 |
RIfloat m_pixelFilterRadius = 1.25f;
|
|
|
1526 |
RIfloat m_resamplingFilterRadius = 1.25f;
|
|
|
1527 |
|
|
|
1528 |
RIfloat Ux = (surfaceToImage[0][0] - uvw.x * surfaceToImage[2][0]) * oow * m_pixelFilterRadius;
|
|
|
1529 |
RIfloat Vx = (surfaceToImage[1][0] - uvw.y * surfaceToImage[2][0]) * oow * m_pixelFilterRadius;
|
|
|
1530 |
RIfloat Uy = (surfaceToImage[0][1] - uvw.x * surfaceToImage[2][1]) * oow * m_pixelFilterRadius;
|
|
|
1531 |
RIfloat Vy = (surfaceToImage[1][1] - uvw.y * surfaceToImage[2][1]) * oow * m_pixelFilterRadius;
|
|
|
1532 |
RIfloat U0 = uvw.x;
|
|
|
1533 |
RIfloat V0 = uvw.y;
|
|
|
1534 |
|
|
|
1535 |
//calculate mip level
|
|
|
1536 |
int level = 0;
|
|
|
1537 |
RIfloat axis1sq = Ux*Ux + Vx*Vx;
|
|
|
1538 |
RIfloat axis2sq = Uy*Uy + Vy*Vy;
|
|
|
1539 |
RIfloat minorAxissq = RI_MIN(axis1sq,axis2sq);
|
|
|
1540 |
while(minorAxissq > 9.0f && level < m_mipmaps.size()) //half the minor axis must be at least three texels
|
|
|
1541 |
{
|
|
|
1542 |
level++;
|
|
|
1543 |
minorAxissq *= 0.25f;
|
|
|
1544 |
}
|
|
|
1545 |
|
|
|
1546 |
RIfloat sx = 1.0f;
|
|
|
1547 |
RIfloat sy = 1.0f;
|
|
|
1548 |
if(level > 0)
|
|
|
1549 |
{
|
|
|
1550 |
sx = (RIfloat)m_mipmaps[level-1]->m_width / (RIfloat)m_width;
|
|
|
1551 |
sy = (RIfloat)m_mipmaps[level-1]->m_height / (RIfloat)m_height;
|
|
|
1552 |
}
|
|
|
1553 |
Ux *= sx;
|
|
|
1554 |
Vx *= sx;
|
|
|
1555 |
U0 *= sx;
|
|
|
1556 |
Uy *= sy;
|
|
|
1557 |
Vy *= sy;
|
|
|
1558 |
V0 *= sy;
|
|
|
1559 |
|
|
|
1560 |
//clamp filter size so that filtering doesn't take excessive amount of time (clamping results in aliasing)
|
|
|
1561 |
RIfloat lim = 100.0f;
|
|
|
1562 |
axis1sq = Ux*Ux + Vx*Vx;
|
|
|
1563 |
axis2sq = Uy*Uy + Vy*Vy;
|
|
|
1564 |
if( axis1sq > lim*lim )
|
|
|
1565 |
{
|
|
|
1566 |
RIfloat s = lim / (RIfloat)sqrt(axis1sq);
|
|
|
1567 |
Ux *= s;
|
|
|
1568 |
Vx *= s;
|
|
|
1569 |
}
|
|
|
1570 |
if( axis2sq > lim*lim )
|
|
|
1571 |
{
|
|
|
1572 |
RIfloat s = lim / (RIfloat)sqrt(axis2sq);
|
|
|
1573 |
Uy *= s;
|
|
|
1574 |
Vy *= s;
|
|
|
1575 |
}
|
|
|
1576 |
|
|
|
1577 |
|
|
|
1578 |
//form elliptic filter by combining texel and pixel filters
|
|
|
1579 |
RIfloat A = Vx*Vx + Vy*Vy + 1.0f;
|
|
|
1580 |
RIfloat B = -2.0f*(Ux*Vx + Uy*Vy);
|
|
|
1581 |
RIfloat C = Ux*Ux + Uy*Uy + 1.0f;
|
|
|
1582 |
//scale by the user-defined size of the kernel
|
|
|
1583 |
A *= m_resamplingFilterRadius;
|
|
|
1584 |
B *= m_resamplingFilterRadius;
|
|
|
1585 |
C *= m_resamplingFilterRadius;
|
|
|
1586 |
|
|
|
1587 |
//calculate bounding box in texture space
|
|
|
1588 |
RIfloat usize = (RIfloat)sqrt(C);
|
|
|
1589 |
RIfloat vsize = (RIfloat)sqrt(A);
|
|
|
1590 |
int u1 = (int)floor(U0 - usize + 0.5f);
|
|
|
1591 |
int u2 = (int)floor(U0 + usize + 0.5f);
|
|
|
1592 |
int v1 = (int)floor(V0 - vsize + 0.5f);
|
|
|
1593 |
int v2 = (int)floor(V0 + vsize + 0.5f);
|
|
|
1594 |
if( u1 == u2 || v1 == v2 )
|
|
|
1595 |
return Color(0,0,0,0,procFormat);
|
|
|
1596 |
|
|
|
1597 |
//scale the filter so that Q = 1 at the cutoff radius
|
|
|
1598 |
RIfloat F = A*C - 0.25f * B*B;
|
|
|
1599 |
if( F <= 0.0f )
|
|
|
1600 |
return Color(0,0,0,0,procFormat); //invalid filter shape due to numerical inaccuracies => return black
|
|
|
1601 |
RIfloat ooF = 1.0f / F;
|
|
|
1602 |
A *= ooF;
|
|
|
1603 |
B *= ooF;
|
|
|
1604 |
C *= ooF;
|
|
|
1605 |
|
|
|
1606 |
//evaluate filter by using forward differences to calculate Q = A*U^2 + B*U*V + C*V^2
|
|
|
1607 |
Color color(0,0,0,0,procFormat);
|
|
|
1608 |
RIfloat sumweight = 0.0f;
|
|
|
1609 |
RIfloat DDQ = 2.0f * A;
|
|
|
1610 |
RIfloat U = (RIfloat)u1 - U0 + 0.5f;
|
|
|
1611 |
for(int v=v1;v<v2;v++)
|
|
|
1612 |
{
|
|
|
1613 |
RIfloat V = (RIfloat)v - V0 + 0.5f;
|
|
|
1614 |
RIfloat DQ = A*(2.0f*U+1.0f) + B*V;
|
|
|
1615 |
RIfloat Q = (C*V+B*U)*V + A*U*U;
|
|
|
1616 |
for(int u=u1;u<u2;u++)
|
|
|
1617 |
{
|
|
|
1618 |
if( Q >= 0.0f && Q < 1.0f )
|
|
|
1619 |
{ //Q = r^2, fit gaussian to the range [0,1]
|
|
|
1620 |
RIfloat weight = (RIfloat)exp(-0.5f * 10.0f * Q); //gaussian at radius 10 equals 0.0067
|
|
|
1621 |
color += weight * readTexel(u, v, level, tilingMode, tileFillColor);
|
|
|
1622 |
sumweight += weight;
|
|
|
1623 |
}
|
|
|
1624 |
Q += DQ;
|
|
|
1625 |
DQ += DDQ;
|
|
|
1626 |
}
|
|
|
1627 |
}
|
|
|
1628 |
if( sumweight == 0.0f )
|
|
|
1629 |
return Color(0,0,0,0,procFormat);
|
|
|
1630 |
RI_ASSERT(sumweight > 0.0f);
|
|
|
1631 |
sumweight = 1.0f / sumweight;
|
|
|
1632 |
return color * sumweight;
|
|
|
1633 |
}
|
|
|
1634 |
else
|
|
|
1635 |
#endif
|
|
|
1636 |
//if(aq & VG_IMAGE_QUALITY_FASTER)
|
|
|
1637 |
if(aq & VG_IMAGE_QUALITY_BETTER)
|
|
|
1638 |
{ //bilinear
|
|
|
1639 |
uvw.x -= 0.5f;
|
|
|
1640 |
uvw.y -= 0.5f;
|
|
|
1641 |
int u = (int)floor(uvw.x);
|
|
|
1642 |
int v = (int)floor(uvw.y);
|
|
|
1643 |
Color c00 = readTexel(u,v, 0, tilingMode, tileFillColor);
|
|
|
1644 |
Color c10 = readTexel(u+1,v, 0, tilingMode, tileFillColor);
|
|
|
1645 |
Color c01 = readTexel(u,v+1, 0, tilingMode, tileFillColor);
|
|
|
1646 |
Color c11 = readTexel(u+1,v+1, 0, tilingMode, tileFillColor);
|
|
|
1647 |
RIfloat fu = uvw.x - (RIfloat)u;
|
|
|
1648 |
RIfloat fv = uvw.y - (RIfloat)v;
|
|
|
1649 |
Color c0 = c00 * (1.0f - fu) + c10 * fu;
|
|
|
1650 |
Color c1 = c01 * (1.0f - fu) + c11 * fu;
|
|
|
1651 |
return c0 * (1.0f - fv) + c1 * fv;
|
|
|
1652 |
}
|
|
|
1653 |
else //VG_IMAGE_QUALITY_FASTER and VG_IMAGE_QUALITY_NONANTIALIASED
|
|
|
1654 |
{ //point sampling
|
|
|
1655 |
return readTexel((int)floor(uvw.x), (int)floor(uvw.y), 0, tilingMode, tileFillColor);
|
|
|
1656 |
}
|
|
|
1657 |
}
|
|
|
1658 |
|
|
|
1659 |
/*-------------------------------------------------------------------*//*!
|
|
|
1660 |
* \brief Applies color matrix filter.
|
|
|
1661 |
* \param
|
|
|
1662 |
* \return
|
|
|
1663 |
* \note
|
|
|
1664 |
*//*-------------------------------------------------------------------*/
|
|
|
1665 |
|
|
|
1666 |
void Image::colorMatrix(const Image& src, const RIfloat* matrix, bool filterFormatLinear, bool filterFormatPremultiplied, VGbitfield channelMask)
|
|
|
1667 |
{
|
|
|
1668 |
RI_ASSERT(src.m_data); //source exists
|
|
|
1669 |
RI_ASSERT(m_data); //destination exists
|
|
|
1670 |
RI_ASSERT(matrix);
|
|
|
1671 |
RI_ASSERT(m_referenceCount > 0 && src.m_referenceCount > 0);
|
|
|
1672 |
|
|
|
1673 |
int w = RI_INT_MIN(m_width, src.m_width);
|
|
|
1674 |
int h = RI_INT_MIN(m_height, src.m_height);
|
|
|
1675 |
RI_ASSERT(w > 0 && h > 0);
|
|
|
1676 |
|
|
|
1677 |
Color::InternalFormat srcFormat = src.m_desc.internalFormat;
|
|
|
1678 |
Color::InternalFormat procFormat = (Color::InternalFormat)(srcFormat & ~Color::LUMINANCE); //process in RGB, not luminance
|
|
|
1679 |
if(filterFormatLinear)
|
|
|
1680 |
procFormat = (Color::InternalFormat)(procFormat & ~Color::NONLINEAR);
|
|
|
1681 |
else
|
|
|
1682 |
procFormat = (Color::InternalFormat)(procFormat | Color::NONLINEAR);
|
|
|
1683 |
|
|
|
1684 |
if(filterFormatPremultiplied)
|
|
|
1685 |
procFormat = (Color::InternalFormat)(procFormat | Color::PREMULTIPLIED);
|
|
|
1686 |
else
|
|
|
1687 |
procFormat = (Color::InternalFormat)(procFormat & ~Color::PREMULTIPLIED);
|
|
|
1688 |
|
|
|
1689 |
for(int j=0;j<h;j++)
|
|
|
1690 |
{
|
|
|
1691 |
for(int i=0;i<w;i++)
|
|
|
1692 |
{
|
|
|
1693 |
Color s = src.readPixel(i,j); //convert to RGBA [0,1]
|
|
|
1694 |
s.convert(procFormat);
|
|
|
1695 |
|
|
|
1696 |
Color d(0,0,0,0,procFormat);
|
|
|
1697 |
d.r = matrix[0+4*0] * s.r + matrix[0+4*1] * s.g + matrix[0+4*2] * s.b + matrix[0+4*3] * s.a + matrix[0+4*4];
|
|
|
1698 |
d.g = matrix[1+4*0] * s.r + matrix[1+4*1] * s.g + matrix[1+4*2] * s.b + matrix[1+4*3] * s.a + matrix[1+4*4];
|
|
|
1699 |
d.b = matrix[2+4*0] * s.r + matrix[2+4*1] * s.g + matrix[2+4*2] * s.b + matrix[2+4*3] * s.a + matrix[2+4*4];
|
|
|
1700 |
d.a = matrix[3+4*0] * s.r + matrix[3+4*1] * s.g + matrix[3+4*2] * s.b + matrix[3+4*3] * s.a + matrix[3+4*4];
|
|
|
1701 |
|
|
|
1702 |
writeFilteredPixel(i, j, d, channelMask);
|
|
|
1703 |
}
|
|
|
1704 |
}
|
|
|
1705 |
}
|
|
|
1706 |
|
|
|
1707 |
/*-------------------------------------------------------------------*//*!
|
|
|
1708 |
* \brief Reads a pixel from image with tiling mode applied.
|
|
|
1709 |
* \param
|
|
|
1710 |
* \return
|
|
|
1711 |
* \note
|
|
|
1712 |
*//*-------------------------------------------------------------------*/
|
|
|
1713 |
|
|
|
1714 |
static Color readTiledPixel(int x, int y, int w, int h, VGTilingMode tilingMode, const Array<Color>& image, const Color& edge)
|
|
|
1715 |
{
|
|
|
1716 |
Color s;
|
|
|
1717 |
if(x < 0 || x >= w || y < 0 || y >= h)
|
|
|
1718 |
{ //apply tiling mode
|
|
|
1719 |
switch(tilingMode)
|
|
|
1720 |
{
|
|
|
1721 |
case VG_TILE_FILL:
|
|
|
1722 |
s = edge;
|
|
|
1723 |
break;
|
|
|
1724 |
case VG_TILE_PAD:
|
|
|
1725 |
x = RI_INT_MIN(RI_INT_MAX(x, 0), w-1);
|
|
|
1726 |
y = RI_INT_MIN(RI_INT_MAX(y, 0), h-1);
|
|
|
1727 |
RI_ASSERT(x >= 0 && x < w && y >= 0 && y < h);
|
|
|
1728 |
s = image[y*w+x];
|
|
|
1729 |
break;
|
|
|
1730 |
case VG_TILE_REPEAT:
|
|
|
1731 |
x = RI_INT_MOD(x, w);
|
|
|
1732 |
y = RI_INT_MOD(y, h);
|
|
|
1733 |
RI_ASSERT(x >= 0 && x < w && y >= 0 && y < h);
|
|
|
1734 |
s = image[y*w+x];
|
|
|
1735 |
break;
|
|
|
1736 |
default:
|
|
|
1737 |
RI_ASSERT(tilingMode == VG_TILE_REFLECT);
|
|
|
1738 |
x = RI_INT_MOD(x, w*2);
|
|
|
1739 |
y = RI_INT_MOD(y, h*2);
|
|
|
1740 |
if(x >= w) x = w*2-1-x;
|
|
|
1741 |
if(y >= h) y = h*2-1-y;
|
|
|
1742 |
RI_ASSERT(x >= 0 && x < w && y >= 0 && y < h);
|
|
|
1743 |
s = image[y*w+x];
|
|
|
1744 |
break;
|
|
|
1745 |
}
|
|
|
1746 |
}
|
|
|
1747 |
else
|
|
|
1748 |
{
|
|
|
1749 |
RI_ASSERT(x >= 0 && x < w && y >= 0 && y < h);
|
|
|
1750 |
s = image[y*w+x];
|
|
|
1751 |
}
|
|
|
1752 |
return s;
|
|
|
1753 |
}
|
|
|
1754 |
|
|
|
1755 |
/*-------------------------------------------------------------------*//*!
|
|
|
1756 |
* \brief Returns processing format for filtering.
|
|
|
1757 |
* \param
|
|
|
1758 |
* \return
|
|
|
1759 |
* \note
|
|
|
1760 |
*//*-------------------------------------------------------------------*/
|
|
|
1761 |
|
|
|
1762 |
static Color::InternalFormat getProcessingFormat(Color::InternalFormat srcFormat, bool filterFormatLinear, bool filterFormatPremultiplied)
|
|
|
1763 |
{
|
|
|
1764 |
Color::InternalFormat procFormat = (Color::InternalFormat)(srcFormat & ~Color::LUMINANCE); //process in RGB, not luminance
|
|
|
1765 |
if(filterFormatLinear)
|
|
|
1766 |
procFormat = (Color::InternalFormat)(procFormat & ~Color::NONLINEAR);
|
|
|
1767 |
else
|
|
|
1768 |
procFormat = (Color::InternalFormat)(procFormat | Color::NONLINEAR);
|
|
|
1769 |
|
|
|
1770 |
if(filterFormatPremultiplied)
|
|
|
1771 |
procFormat = (Color::InternalFormat)(procFormat | Color::PREMULTIPLIED);
|
|
|
1772 |
else
|
|
|
1773 |
procFormat = (Color::InternalFormat)(procFormat & ~Color::PREMULTIPLIED);
|
|
|
1774 |
return procFormat;
|
|
|
1775 |
}
|
|
|
1776 |
|
|
|
1777 |
/*-------------------------------------------------------------------*//*!
|
|
|
1778 |
* \brief Applies convolution filter.
|
|
|
1779 |
* \param
|
|
|
1780 |
* \return
|
|
|
1781 |
* \note
|
|
|
1782 |
*//*-------------------------------------------------------------------*/
|
|
|
1783 |
|
|
|
1784 |
void Image::convolve(const Image& src, int kernelWidth, int kernelHeight, int shiftX, int shiftY, const RIint16* kernel, RIfloat scale, RIfloat bias, VGTilingMode tilingMode, const Color& edgeFillColor, bool filterFormatLinear, bool filterFormatPremultiplied, VGbitfield channelMask)
|
|
|
1785 |
{
|
|
|
1786 |
RI_ASSERT(src.m_data); //source exists
|
|
|
1787 |
RI_ASSERT(m_data); //destination exists
|
|
|
1788 |
RI_ASSERT(kernel && kernelWidth > 0 && kernelHeight > 0);
|
|
|
1789 |
RI_ASSERT(m_referenceCount > 0 && src.m_referenceCount > 0);
|
|
|
1790 |
|
|
|
1791 |
//the area to be written is an intersection of source and destination image areas.
|
|
|
1792 |
//lower-left corners of the images are aligned.
|
|
|
1793 |
int w = RI_INT_MIN(m_width, src.m_width);
|
|
|
1794 |
int h = RI_INT_MIN(m_height, src.m_height);
|
|
|
1795 |
RI_ASSERT(w > 0 && h > 0);
|
|
|
1796 |
|
|
|
1797 |
Color::InternalFormat procFormat = getProcessingFormat(src.m_desc.internalFormat, filterFormatLinear, filterFormatPremultiplied);
|
|
|
1798 |
|
|
|
1799 |
Color edge = edgeFillColor;
|
|
|
1800 |
edge.clamp();
|
|
|
1801 |
edge.convert(procFormat);
|
|
|
1802 |
|
|
|
1803 |
Array<Color> tmp;
|
|
|
1804 |
tmp.resize(src.m_width*src.m_height); //throws bad_alloc
|
|
|
1805 |
|
|
|
1806 |
//copy source region to tmp and do conversion
|
|
|
1807 |
for(int j=0;j<src.m_height;j++)
|
|
|
1808 |
{
|
|
|
1809 |
for(int i=0;i<src.m_width;i++)
|
|
|
1810 |
{
|
|
|
1811 |
Color s = src.readPixel(i, j);
|
|
|
1812 |
s.convert(procFormat);
|
|
|
1813 |
tmp[j*src.m_width+i] = s;
|
|
|
1814 |
}
|
|
|
1815 |
}
|
|
|
1816 |
|
|
|
1817 |
for(int j=0;j<h;j++)
|
|
|
1818 |
{
|
|
|
1819 |
for(int i=0;i<w;i++)
|
|
|
1820 |
{
|
|
|
1821 |
Color sum(0,0,0,0,procFormat);
|
|
|
1822 |
|
|
|
1823 |
for(int kj=0;kj<kernelHeight;kj++)
|
|
|
1824 |
{
|
|
|
1825 |
for(int ki=0;ki<kernelWidth;ki++)
|
|
|
1826 |
{
|
|
|
1827 |
int x = i+ki-shiftX;
|
|
|
1828 |
int y = j+kj-shiftY;
|
|
|
1829 |
Color s = readTiledPixel(x, y, src.m_width, src.m_height, tilingMode, tmp, edge);
|
|
|
1830 |
|
|
|
1831 |
int kx = kernelWidth-ki-1;
|
|
|
1832 |
int ky = kernelHeight-kj-1;
|
|
|
1833 |
RI_ASSERT(kx >= 0 && kx < kernelWidth && ky >= 0 && ky < kernelHeight);
|
|
|
1834 |
|
|
|
1835 |
sum += (RIfloat)kernel[kx*kernelHeight+ky] * s;
|
|
|
1836 |
}
|
|
|
1837 |
}
|
|
|
1838 |
|
|
|
1839 |
sum *= scale;
|
|
|
1840 |
sum.r += bias;
|
|
|
1841 |
sum.g += bias;
|
|
|
1842 |
sum.b += bias;
|
|
|
1843 |
sum.a += bias;
|
|
|
1844 |
|
|
|
1845 |
writeFilteredPixel(i, j, sum, channelMask);
|
|
|
1846 |
}
|
|
|
1847 |
}
|
|
|
1848 |
}
|
|
|
1849 |
|
|
|
1850 |
/*-------------------------------------------------------------------*//*!
|
|
|
1851 |
* \brief Applies separable convolution filter.
|
|
|
1852 |
* \param
|
|
|
1853 |
* \return
|
|
|
1854 |
* \note
|
|
|
1855 |
*//*-------------------------------------------------------------------*/
|
|
|
1856 |
|
|
|
1857 |
void Image::separableConvolve(const Image& src, int kernelWidth, int kernelHeight, int shiftX, int shiftY, const RIint16* kernelX, const RIint16* kernelY, RIfloat scale, RIfloat bias, VGTilingMode tilingMode, const Color& edgeFillColor, bool filterFormatLinear, bool filterFormatPremultiplied, VGbitfield channelMask)
|
|
|
1858 |
{
|
|
|
1859 |
RI_ASSERT(src.m_data); //source exists
|
|
|
1860 |
RI_ASSERT(m_data); //destination exists
|
|
|
1861 |
RI_ASSERT(kernelX && kernelY && kernelWidth > 0 && kernelHeight > 0);
|
|
|
1862 |
RI_ASSERT(m_referenceCount > 0 && src.m_referenceCount > 0);
|
|
|
1863 |
|
|
|
1864 |
//the area to be written is an intersection of source and destination image areas.
|
|
|
1865 |
//lower-left corners of the images are aligned.
|
|
|
1866 |
int w = RI_INT_MIN(m_width, src.m_width);
|
|
|
1867 |
int h = RI_INT_MIN(m_height, src.m_height);
|
|
|
1868 |
RI_ASSERT(w > 0 && h > 0);
|
|
|
1869 |
|
|
|
1870 |
Color::InternalFormat procFormat = getProcessingFormat(src.m_desc.internalFormat, filterFormatLinear, filterFormatPremultiplied);
|
|
|
1871 |
|
|
|
1872 |
Color edge = edgeFillColor;
|
|
|
1873 |
edge.clamp();
|
|
|
1874 |
edge.convert(procFormat);
|
|
|
1875 |
|
|
|
1876 |
Array<Color> tmp;
|
|
|
1877 |
tmp.resize(src.m_width*src.m_height); //throws bad_alloc
|
|
|
1878 |
|
|
|
1879 |
//copy source region to tmp and do conversion
|
|
|
1880 |
for(int j=0;j<src.m_height;j++)
|
|
|
1881 |
{
|
|
|
1882 |
for(int i=0;i<src.m_width;i++)
|
|
|
1883 |
{
|
|
|
1884 |
Color s = src.readPixel(i, j);
|
|
|
1885 |
s.convert(procFormat);
|
|
|
1886 |
tmp[j*src.m_width+i] = s;
|
|
|
1887 |
}
|
|
|
1888 |
}
|
|
|
1889 |
|
|
|
1890 |
Array<Color> tmp2;
|
|
|
1891 |
tmp2.resize(w*src.m_height); //throws bad_alloc
|
|
|
1892 |
for(int j=0;j<src.m_height;j++)
|
|
|
1893 |
{
|
|
|
1894 |
for(int i=0;i<w;i++)
|
|
|
1895 |
{
|
|
|
1896 |
Color sum(0,0,0,0,procFormat);
|
|
|
1897 |
for(int ki=0;ki<kernelWidth;ki++)
|
|
|
1898 |
{
|
|
|
1899 |
int x = i+ki-shiftX;
|
|
|
1900 |
Color s = readTiledPixel(x, j, src.m_width, src.m_height, tilingMode, tmp, edge);
|
|
|
1901 |
|
|
|
1902 |
int kx = kernelWidth-ki-1;
|
|
|
1903 |
RI_ASSERT(kx >= 0 && kx < kernelWidth);
|
|
|
1904 |
|
|
|
1905 |
sum += (RIfloat)kernelX[kx] * s;
|
|
|
1906 |
}
|
|
|
1907 |
tmp2[j*w+i] = sum;
|
|
|
1908 |
}
|
|
|
1909 |
}
|
|
|
1910 |
|
|
|
1911 |
if(tilingMode == VG_TILE_FILL)
|
|
|
1912 |
{ //convolve the edge color
|
|
|
1913 |
Color sum(0,0,0,0,procFormat);
|
|
|
1914 |
for(int ki=0;ki<kernelWidth;ki++)
|
|
|
1915 |
{
|
|
|
1916 |
sum += (RIfloat)kernelX[ki] * edge;
|
|
|
1917 |
}
|
|
|
1918 |
edge = sum;
|
|
|
1919 |
}
|
|
|
1920 |
|
|
|
1921 |
for(int j=0;j<h;j++)
|
|
|
1922 |
{
|
|
|
1923 |
for(int i=0;i<w;i++)
|
|
|
1924 |
{
|
|
|
1925 |
Color sum(0,0,0,0,procFormat);
|
|
|
1926 |
for(int kj=0;kj<kernelHeight;kj++)
|
|
|
1927 |
{
|
|
|
1928 |
int y = j+kj-shiftY;
|
|
|
1929 |
Color s = readTiledPixel(i, y, w, src.m_height, tilingMode, tmp2, edge);
|
|
|
1930 |
|
|
|
1931 |
int ky = kernelHeight-kj-1;
|
|
|
1932 |
RI_ASSERT(ky >= 0 && ky < kernelHeight);
|
|
|
1933 |
|
|
|
1934 |
sum += (RIfloat)kernelY[ky] * s;
|
|
|
1935 |
}
|
|
|
1936 |
|
|
|
1937 |
sum *= scale;
|
|
|
1938 |
sum.r += bias;
|
|
|
1939 |
sum.g += bias;
|
|
|
1940 |
sum.b += bias;
|
|
|
1941 |
sum.a += bias;
|
|
|
1942 |
|
|
|
1943 |
writeFilteredPixel(i, j, sum, channelMask);
|
|
|
1944 |
}
|
|
|
1945 |
}
|
|
|
1946 |
}
|
|
|
1947 |
|
|
|
1948 |
/*-------------------------------------------------------------------*//*!
|
|
|
1949 |
* \brief Applies Gaussian blur filter.
|
|
|
1950 |
* \param
|
|
|
1951 |
* \return
|
|
|
1952 |
* \note
|
|
|
1953 |
*//*-------------------------------------------------------------------*/
|
|
|
1954 |
|
|
|
1955 |
void Image::gaussianBlur(const Image& src, RIfloat stdDeviationX, RIfloat stdDeviationY, VGTilingMode tilingMode, const Color& edgeFillColor, bool filterFormatLinear, bool filterFormatPremultiplied, VGbitfield channelMask)
|
|
|
1956 |
{
|
|
|
1957 |
RI_ASSERT(src.m_data); //source exists
|
|
|
1958 |
RI_ASSERT(m_data); //destination exists
|
|
|
1959 |
RI_ASSERT(stdDeviationX > 0.0f && stdDeviationY > 0.0f);
|
|
|
1960 |
RI_ASSERT(stdDeviationX <= RI_MAX_GAUSSIAN_STD_DEVIATION && stdDeviationY <= RI_MAX_GAUSSIAN_STD_DEVIATION);
|
|
|
1961 |
RI_ASSERT(m_referenceCount > 0 && src.m_referenceCount > 0);
|
|
|
1962 |
|
|
|
1963 |
//the area to be written is an intersection of source and destination image areas.
|
|
|
1964 |
//lower-left corners of the images are aligned.
|
|
|
1965 |
int w = RI_INT_MIN(m_width, src.m_width);
|
|
|
1966 |
int h = RI_INT_MIN(m_height, src.m_height);
|
|
|
1967 |
RI_ASSERT(w > 0 && h > 0);
|
|
|
1968 |
|
|
|
1969 |
Color::InternalFormat procFormat = getProcessingFormat(src.m_desc.internalFormat, filterFormatLinear, filterFormatPremultiplied);
|
|
|
1970 |
|
|
|
1971 |
Color edge = edgeFillColor;
|
|
|
1972 |
edge.clamp();
|
|
|
1973 |
edge.convert(procFormat);
|
|
|
1974 |
|
|
|
1975 |
Array<Color> tmp;
|
|
|
1976 |
tmp.resize(src.m_width*src.m_height); //throws bad_alloc
|
|
|
1977 |
|
|
|
1978 |
//copy source region to tmp and do conversion
|
|
|
1979 |
for(int j=0;j<src.m_height;j++)
|
|
|
1980 |
{
|
|
|
1981 |
for(int i=0;i<src.m_width;i++)
|
|
|
1982 |
{
|
|
|
1983 |
Color s = src.readPixel(i, j);
|
|
|
1984 |
s.convert(procFormat);
|
|
|
1985 |
tmp[j*src.m_width+i] = s;
|
|
|
1986 |
}
|
|
|
1987 |
}
|
|
|
1988 |
|
|
|
1989 |
RIfloat expScaleX = -1.0f / (2.0f*stdDeviationX*stdDeviationX);
|
|
|
1990 |
RIfloat expScaleY = -1.0f / (2.0f*stdDeviationY*stdDeviationY);
|
|
|
1991 |
|
|
|
1992 |
int kernelWidth = (int)(stdDeviationX * 4.0f + 1.0f);
|
|
|
1993 |
int kernelHeight = (int)(stdDeviationY * 4.0f + 1.0f);
|
|
|
1994 |
|
|
|
1995 |
//make a separable kernel
|
|
|
1996 |
Array<RIfloat> kernelX;
|
|
|
1997 |
kernelX.resize(kernelWidth*2+1);
|
|
|
1998 |
int shiftX = kernelWidth;
|
|
|
1999 |
RIfloat scaleX = 0.0f;
|
|
|
2000 |
for(int i=0;i<kernelX.size();i++)
|
|
|
2001 |
{
|
|
|
2002 |
int x = i-shiftX;
|
|
|
2003 |
kernelX[i] = (RIfloat)exp((RIfloat)x*(RIfloat)x * expScaleX);
|
|
|
2004 |
scaleX += kernelX[i];
|
|
|
2005 |
}
|
|
|
2006 |
scaleX = 1.0f / scaleX; //NOTE: using the mathematical definition of the scaling term doesn't work since we cut the filter support early for performance
|
|
|
2007 |
|
|
|
2008 |
Array<RIfloat> kernelY;
|
|
|
2009 |
kernelY.resize(kernelHeight*2+1);
|
|
|
2010 |
int shiftY = kernelHeight;
|
|
|
2011 |
RIfloat scaleY = 0.0f;
|
|
|
2012 |
for(int i=0;i<kernelY.size();i++)
|
|
|
2013 |
{
|
|
|
2014 |
int y = i-shiftY;
|
|
|
2015 |
kernelY[i] = (RIfloat)exp((RIfloat)y*(RIfloat)y * expScaleY);
|
|
|
2016 |
scaleY += kernelY[i];
|
|
|
2017 |
}
|
|
|
2018 |
scaleY = 1.0f / scaleY; //NOTE: using the mathematical definition of the scaling term doesn't work since we cut the filter support early for performance
|
|
|
2019 |
|
|
|
2020 |
Array<Color> tmp2;
|
|
|
2021 |
tmp2.resize(w*src.m_height); //throws bad_alloc
|
|
|
2022 |
//horizontal pass
|
|
|
2023 |
for(int j=0;j<src.m_height;j++)
|
|
|
2024 |
{
|
|
|
2025 |
for(int i=0;i<w;i++)
|
|
|
2026 |
{
|
|
|
2027 |
Color sum(0,0,0,0,procFormat);
|
|
|
2028 |
for(int ki=0;ki<kernelX.size();ki++)
|
|
|
2029 |
{
|
|
|
2030 |
int x = i+ki-shiftX;
|
|
|
2031 |
sum += kernelX[ki] * readTiledPixel(x, j, src.m_width, src.m_height, tilingMode, tmp, edge);
|
|
|
2032 |
}
|
|
|
2033 |
tmp2[j*w+i] = sum * scaleX;
|
|
|
2034 |
}
|
|
|
2035 |
}
|
|
|
2036 |
//vertical pass
|
|
|
2037 |
for(int j=0;j<h;j++)
|
|
|
2038 |
{
|
|
|
2039 |
for(int i=0;i<w;i++)
|
|
|
2040 |
{
|
|
|
2041 |
Color sum(0,0,0,0,procFormat);
|
|
|
2042 |
for(int kj=0;kj<kernelY.size();kj++)
|
|
|
2043 |
{
|
|
|
2044 |
int y = j+kj-shiftY;
|
|
|
2045 |
sum += kernelY[kj] * readTiledPixel(i, y, w, src.m_height, tilingMode, tmp2, edge);
|
|
|
2046 |
}
|
|
|
2047 |
writeFilteredPixel(i, j, sum * scaleY, channelMask);
|
|
|
2048 |
}
|
|
|
2049 |
}
|
|
|
2050 |
}
|
|
|
2051 |
|
|
|
2052 |
/*-------------------------------------------------------------------*//*!
|
|
|
2053 |
* \brief Returns lookup table format for lookup filters.
|
|
|
2054 |
* \param
|
|
|
2055 |
* \return
|
|
|
2056 |
* \note
|
|
|
2057 |
*//*-------------------------------------------------------------------*/
|
|
|
2058 |
|
|
|
2059 |
static Color::InternalFormat getLUTFormat(bool outputLinear, bool outputPremultiplied)
|
|
|
2060 |
{
|
|
|
2061 |
Color::InternalFormat lutFormat = Color::lRGBA;
|
|
|
2062 |
if(outputLinear && outputPremultiplied)
|
|
|
2063 |
lutFormat = Color::lRGBA_PRE;
|
|
|
2064 |
else if(!outputLinear && !outputPremultiplied)
|
|
|
2065 |
lutFormat = Color::sRGBA;
|
|
|
2066 |
else if(!outputLinear && outputPremultiplied)
|
|
|
2067 |
lutFormat = Color::sRGBA_PRE;
|
|
|
2068 |
return lutFormat;
|
|
|
2069 |
}
|
|
|
2070 |
|
|
|
2071 |
/*-------------------------------------------------------------------*//*!
|
|
|
2072 |
* \brief Applies multi-channel lookup table filter.
|
|
|
2073 |
* \param
|
|
|
2074 |
* \return
|
|
|
2075 |
* \note
|
|
|
2076 |
*//*-------------------------------------------------------------------*/
|
|
|
2077 |
|
|
|
2078 |
void Image::lookup(const Image& src, const RIuint8 * redLUT, const RIuint8 * greenLUT, const RIuint8 * blueLUT, const RIuint8 * alphaLUT, bool outputLinear, bool outputPremultiplied, bool filterFormatLinear, bool filterFormatPremultiplied, VGbitfield channelMask)
|
|
|
2079 |
{
|
|
|
2080 |
RI_ASSERT(src.m_data); //source exists
|
|
|
2081 |
RI_ASSERT(m_data); //destination exists
|
|
|
2082 |
RI_ASSERT(redLUT && greenLUT && blueLUT && alphaLUT);
|
|
|
2083 |
RI_ASSERT(m_referenceCount > 0 && src.m_referenceCount > 0);
|
|
|
2084 |
|
|
|
2085 |
//the area to be written is an intersection of source and destination image areas.
|
|
|
2086 |
//lower-left corners of the images are aligned.
|
|
|
2087 |
int w = RI_INT_MIN(m_width, src.m_width);
|
|
|
2088 |
int h = RI_INT_MIN(m_height, src.m_height);
|
|
|
2089 |
RI_ASSERT(w > 0 && h > 0);
|
|
|
2090 |
|
|
|
2091 |
Color::InternalFormat procFormat = getProcessingFormat(src.m_desc.internalFormat, filterFormatLinear, filterFormatPremultiplied);
|
|
|
2092 |
Color::InternalFormat lutFormat = getLUTFormat(outputLinear, outputPremultiplied);
|
|
|
2093 |
|
|
|
2094 |
for(int j=0;j<h;j++)
|
|
|
2095 |
{
|
|
|
2096 |
for(int i=0;i<w;i++)
|
|
|
2097 |
{
|
|
|
2098 |
Color s = src.readPixel(i,j); //convert to RGBA [0,1]
|
|
|
2099 |
s.convert(procFormat);
|
|
|
2100 |
|
|
|
2101 |
Color d(0,0,0,0,lutFormat);
|
|
|
2102 |
d.r = intToColor( redLUT[colorToInt(s.r, 255)], 255);
|
|
|
2103 |
d.g = intToColor(greenLUT[colorToInt(s.g, 255)], 255);
|
|
|
2104 |
d.b = intToColor( blueLUT[colorToInt(s.b, 255)], 255);
|
|
|
2105 |
d.a = intToColor(alphaLUT[colorToInt(s.a, 255)], 255);
|
|
|
2106 |
|
|
|
2107 |
writeFilteredPixel(i, j, d, channelMask);
|
|
|
2108 |
}
|
|
|
2109 |
}
|
|
|
2110 |
}
|
|
|
2111 |
|
|
|
2112 |
/*-------------------------------------------------------------------*//*!
|
|
|
2113 |
* \brief Applies single channel lookup table filter.
|
|
|
2114 |
* \param
|
|
|
2115 |
* \return
|
|
|
2116 |
* \note
|
|
|
2117 |
*//*-------------------------------------------------------------------*/
|
|
|
2118 |
|
|
|
2119 |
void Image::lookupSingle(const Image& src, const RIuint32 * lookupTable, VGImageChannel sourceChannel, bool outputLinear, bool outputPremultiplied, bool filterFormatLinear, bool filterFormatPremultiplied, VGbitfield channelMask)
|
|
|
2120 |
{
|
|
|
2121 |
RI_ASSERT(src.m_data); //source exists
|
|
|
2122 |
RI_ASSERT(m_data); //destination exists
|
|
|
2123 |
RI_ASSERT(lookupTable);
|
|
|
2124 |
RI_ASSERT(m_referenceCount > 0 && src.m_referenceCount > 0);
|
|
|
2125 |
|
|
|
2126 |
//the area to be written is an intersection of source and destination image areas.
|
|
|
2127 |
//lower-left corners of the images are aligned.
|
|
|
2128 |
int w = RI_INT_MIN(m_width, src.m_width);
|
|
|
2129 |
int h = RI_INT_MIN(m_height, src.m_height);
|
|
|
2130 |
RI_ASSERT(w > 0 && h > 0);
|
|
|
2131 |
|
|
|
2132 |
if(src.m_desc.isLuminance())
|
|
|
2133 |
sourceChannel = VG_RED;
|
|
|
2134 |
else if(src.m_desc.redBits + src.m_desc.greenBits + src.m_desc.blueBits == 0)
|
|
|
2135 |
{
|
|
|
2136 |
RI_ASSERT(src.m_desc.alphaBits);
|
|
|
2137 |
sourceChannel = VG_ALPHA;
|
|
|
2138 |
}
|
|
|
2139 |
|
|
|
2140 |
Color::InternalFormat procFormat = getProcessingFormat(src.m_desc.internalFormat, filterFormatLinear, filterFormatPremultiplied);
|
|
|
2141 |
Color::InternalFormat lutFormat = getLUTFormat(outputLinear, outputPremultiplied);
|
|
|
2142 |
|
|
|
2143 |
for(int j=0;j<h;j++)
|
|
|
2144 |
{
|
|
|
2145 |
for(int i=0;i<w;i++)
|
|
|
2146 |
{
|
|
|
2147 |
Color s = src.readPixel(i,j); //convert to RGBA [0,1]
|
|
|
2148 |
s.convert(procFormat);
|
|
|
2149 |
int e;
|
|
|
2150 |
switch(sourceChannel)
|
|
|
2151 |
{
|
|
|
2152 |
case VG_RED:
|
|
|
2153 |
e = colorToInt(s.r, 255);
|
|
|
2154 |
break;
|
|
|
2155 |
case VG_GREEN:
|
|
|
2156 |
e = colorToInt(s.g, 255);
|
|
|
2157 |
break;
|
|
|
2158 |
case VG_BLUE:
|
|
|
2159 |
e = colorToInt(s.b, 255);
|
|
|
2160 |
break;
|
|
|
2161 |
default:
|
|
|
2162 |
RI_ASSERT(sourceChannel == VG_ALPHA);
|
|
|
2163 |
e = colorToInt(s.a, 255);
|
|
|
2164 |
break;
|
|
|
2165 |
}
|
|
|
2166 |
|
|
|
2167 |
RIuint32 l = ((const RIuint32*)lookupTable)[e];
|
|
|
2168 |
Color d(0,0,0,0,lutFormat);
|
|
|
2169 |
d.r = intToColor((l>>24), 255);
|
|
|
2170 |
d.g = intToColor((l>>16), 255);
|
|
|
2171 |
d.b = intToColor((l>> 8), 255);
|
|
|
2172 |
d.a = intToColor((l ), 255);
|
|
|
2173 |
|
|
|
2174 |
writeFilteredPixel(i, j, d, channelMask);
|
|
|
2175 |
}
|
|
|
2176 |
}
|
|
|
2177 |
}
|
|
|
2178 |
|
|
|
2179 |
|
|
|
2180 |
/*-------------------------------------------------------------------*//*!
|
|
|
2181 |
* \brief
|
|
|
2182 |
* \param
|
|
|
2183 |
* \return
|
|
|
2184 |
* \note
|
|
|
2185 |
*//*-------------------------------------------------------------------*/
|
|
|
2186 |
|
|
|
2187 |
Surface::Surface(const Color::Descriptor& desc, int width, int height, int numSamples) :
|
|
|
2188 |
m_width(width),
|
|
|
2189 |
m_height(height),
|
|
|
2190 |
m_numSamples(numSamples),
|
|
|
2191 |
m_referenceCount(0),
|
|
|
2192 |
m_image(NULL)
|
|
|
2193 |
{
|
|
|
2194 |
RI_ASSERT(width > 0 && height > 0 && numSamples > 0 && numSamples <= 32);
|
|
|
2195 |
m_image = RI_NEW(Image, (desc, width*numSamples, height, 0)); //throws bad_alloc
|
|
|
2196 |
m_image->addReference();
|
|
|
2197 |
}
|
|
|
2198 |
|
|
|
2199 |
/*-------------------------------------------------------------------*//*!
|
|
|
2200 |
* \brief
|
|
|
2201 |
* \param
|
|
|
2202 |
* \return
|
|
|
2203 |
* \note
|
|
|
2204 |
*//*-------------------------------------------------------------------*/
|
|
|
2205 |
|
|
|
2206 |
Surface::Surface(Image* image) :
|
|
|
2207 |
m_width(0),
|
|
|
2208 |
m_height(0),
|
|
|
2209 |
m_numSamples(1),
|
|
|
2210 |
m_referenceCount(0),
|
|
|
2211 |
m_image(image)
|
|
|
2212 |
{
|
|
|
2213 |
RI_ASSERT(image);
|
|
|
2214 |
m_width = image->getWidth();
|
|
|
2215 |
m_height = image->getHeight();
|
|
|
2216 |
m_image->addReference();
|
|
|
2217 |
}
|
|
|
2218 |
|
|
|
2219 |
/*-------------------------------------------------------------------*//*!
|
|
|
2220 |
* \brief
|
|
|
2221 |
* \param
|
|
|
2222 |
* \return
|
|
|
2223 |
* \note
|
|
|
2224 |
*//*-------------------------------------------------------------------*/
|
|
|
2225 |
|
|
|
2226 |
Surface::Surface(const Color::Descriptor& desc, int width, int height, int stride, RIuint8* data) :
|
|
|
2227 |
m_width(width),
|
|
|
2228 |
m_height(height),
|
|
|
2229 |
m_numSamples(1),
|
|
|
2230 |
m_referenceCount(0),
|
|
|
2231 |
m_image(NULL)
|
|
|
2232 |
{
|
|
|
2233 |
RI_ASSERT(width > 0 && height > 0);
|
|
|
2234 |
m_image = RI_NEW(Image, (desc, width, height, stride, data)); //throws bad_alloc
|
|
|
2235 |
m_image->addReference();
|
|
|
2236 |
}
|
|
|
2237 |
|
|
|
2238 |
/*-------------------------------------------------------------------*//*!
|
|
|
2239 |
* \brief
|
|
|
2240 |
* \param
|
|
|
2241 |
* \return
|
|
|
2242 |
* \note
|
|
|
2243 |
*//*-------------------------------------------------------------------*/
|
|
|
2244 |
|
|
|
2245 |
Surface::~Surface()
|
|
|
2246 |
{
|
|
|
2247 |
RI_ASSERT(m_referenceCount == 0);
|
|
|
2248 |
if(!m_image->removeReference())
|
|
|
2249 |
RI_DELETE(m_image);
|
|
|
2250 |
}
|
|
|
2251 |
|
|
|
2252 |
/*-------------------------------------------------------------------*//*!
|
|
|
2253 |
* \brief
|
|
|
2254 |
* \param
|
|
|
2255 |
* \return
|
|
|
2256 |
* \note
|
|
|
2257 |
*//*-------------------------------------------------------------------*/
|
|
|
2258 |
|
|
|
2259 |
void Surface::clear(const Color& clearColor, int x, int y, int w, int h, const Array<Rectangle>* scissors)
|
|
|
2260 |
{
|
|
|
2261 |
RI_ASSERT(m_numSamples == 1);
|
|
|
2262 |
|
|
|
2263 |
Image* image = m_image;
|
|
|
2264 |
|
|
|
2265 |
Color col = clearColor;
|
|
|
2266 |
col.clamp();
|
|
|
2267 |
col.convert(m_image->getDescriptor().internalFormat);
|
|
|
2268 |
|
|
|
2269 |
IntegerColor ic = IntegerColor(col);
|
|
|
2270 |
ic.truncateColor(m_image->getDescriptor());
|
|
|
2271 |
const RIuint32 c = ic.getPackedColor(m_image->getDescriptor());
|
|
|
2272 |
|
|
|
2273 |
if (x != 0 || y != 0 || w != image->getWidth() || h != image->getHeight() || scissors)
|
|
|
2274 |
{
|
|
|
2275 |
// Simple implementation: intersect with surface and clip rects -> may clear the
|
|
|
2276 |
// same area several times. Best if scissors are non-overlapping
|
|
|
2277 |
Rectangle r(0,0,getWidth(),getHeight());
|
|
|
2278 |
r.intersect(Rectangle(x,y,w,h));
|
|
|
2279 |
|
|
|
2280 |
if (r.isEmpty() || (scissors && scissors->size() == 0))
|
|
|
2281 |
return;
|
|
|
2282 |
|
|
|
2283 |
if (scissors && scissors->size())
|
|
|
2284 |
{
|
|
|
2285 |
for (int i = 0; i < scissors->size(); i++)
|
|
|
2286 |
{
|
|
|
2287 |
Rectangle s = (*scissors)[i];
|
|
|
2288 |
s.intersect(r);
|
|
|
2289 |
|
|
|
2290 |
if (s.isEmpty())
|
|
|
2291 |
continue;
|
|
|
2292 |
|
|
|
2293 |
image->fillPackedRectangle(s.x, s.y, s.width, s.height, c);
|
|
|
2294 |
}
|
|
|
2295 |
}
|
|
|
2296 |
else
|
|
|
2297 |
{
|
|
|
2298 |
image->fillPackedRectangle(r.x, r.y, r.width, r.height, c);
|
|
|
2299 |
}
|
|
|
2300 |
}
|
|
|
2301 |
else
|
|
|
2302 |
{
|
|
|
2303 |
// Clear the whole buffer
|
|
|
2304 |
|
|
|
2305 |
m_image->fillPacked(c);
|
|
|
2306 |
}
|
|
|
2307 |
}
|
|
|
2308 |
|
|
|
2309 |
/*-------------------------------------------------------------------*//*!
|
|
|
2310 |
* \brief
|
|
|
2311 |
* \param
|
|
|
2312 |
* \return
|
|
|
2313 |
* \note
|
|
|
2314 |
*//*-------------------------------------------------------------------*/
|
|
|
2315 |
|
|
|
2316 |
#if 0
|
|
|
2317 |
void Surface::blit(const Image& src, int sx, int sy, int dx, int dy, int w, int h)
|
|
|
2318 |
{
|
|
|
2319 |
Rectangle rect;
|
|
|
2320 |
rect.x = 0;
|
|
|
2321 |
rect.y = 0;
|
|
|
2322 |
rect.width = getWidth();
|
|
|
2323 |
rect.height = getHeight();
|
|
|
2324 |
Array<Rectangle> scissors;
|
|
|
2325 |
scissors.push_back(rect);
|
|
|
2326 |
blit(src, sx, sy, dx, dy, w, h, scissors);
|
|
|
2327 |
}
|
|
|
2328 |
#endif
|
|
|
2329 |
|
|
|
2330 |
/*-------------------------------------------------------------------*//*!
|
|
|
2331 |
* \brief
|
|
|
2332 |
* \param
|
|
|
2333 |
* \return
|
|
|
2334 |
* \note no overlap is possible. Single sample to single or multisample (replicate)
|
|
|
2335 |
*//*-------------------------------------------------------------------*/
|
|
|
2336 |
|
|
|
2337 |
#if 0
|
|
|
2338 |
void Surface::blit(const Image& src, int sx, int sy, int dx, int dy, int w, int h, const Array<Rectangle>& scissors)
|
|
|
2339 |
{
|
|
|
2340 |
//img=>fb: vgSetPixels
|
|
|
2341 |
//user=>fb: vgWritePixels
|
|
|
2342 |
computeBlitRegion(sx, sy, dx, dy, w, h, src.getWidth(), src.getHeight(), getWidth(), getHeight());
|
|
|
2343 |
if(w <= 0 || h <= 0)
|
|
|
2344 |
return; //zero area
|
|
|
2345 |
|
|
|
2346 |
Array<ScissorEdge> scissorEdges;
|
|
|
2347 |
for(int i=0;i<scissors.size();i++)
|
|
|
2348 |
{
|
|
|
2349 |
if(scissors[i].width > 0 && scissors[i].height > 0)
|
|
|
2350 |
{
|
|
|
2351 |
ScissorEdge e;
|
|
|
2352 |
e.miny = scissors[i].y;
|
|
|
2353 |
e.maxy = RI_INT_ADDSATURATE(scissors[i].y, scissors[i].height);
|
|
|
2354 |
|
|
|
2355 |
e.x = scissors[i].x;
|
|
|
2356 |
e.direction = 1;
|
|
|
2357 |
scissorEdges.push_back(e); //throws bad_alloc
|
|
|
2358 |
e.x = RI_INT_ADDSATURATE(scissors[i].x, scissors[i].width);
|
|
|
2359 |
e.direction = -1;
|
|
|
2360 |
scissorEdges.push_back(e); //throws bad_alloc
|
|
|
2361 |
}
|
|
|
2362 |
}
|
|
|
2363 |
if(!scissorEdges.size())
|
|
|
2364 |
return; //there are no scissor rectangles => nothing is visible
|
|
|
2365 |
|
|
|
2366 |
//sort scissor edges by edge x
|
|
|
2367 |
scissorEdges.sort();
|
|
|
2368 |
|
|
|
2369 |
Array<ScissorEdge> scissorAet;
|
|
|
2370 |
for(int j=0;j<h;j++)
|
|
|
2371 |
{
|
|
|
2372 |
//gather scissor edges intersecting this scanline
|
|
|
2373 |
scissorAet.clear();
|
|
|
2374 |
for(int e=0;e<scissorEdges.size();e++)
|
|
|
2375 |
{
|
|
|
2376 |
const ScissorEdge& se = scissorEdges[e];
|
|
|
2377 |
if(dy + j >= se.miny && dy + j < se.maxy)
|
|
|
2378 |
scissorAet.push_back(scissorEdges[e]); //throws bad_alloc
|
|
|
2379 |
}
|
|
|
2380 |
if(!scissorAet.size())
|
|
|
2381 |
continue; //scissoring is on, but there are no scissor rectangles on this scanline
|
|
|
2382 |
|
|
|
2383 |
//blit a scanline
|
|
|
2384 |
int scissorWinding = 0;
|
|
|
2385 |
int scissorIndex = 0;
|
|
|
2386 |
for(int i=0;i<w;i++)
|
|
|
2387 |
{
|
|
|
2388 |
while(scissorIndex < scissorAet.size() && scissorAet[scissorIndex].x <= dx + i)
|
|
|
2389 |
scissorWinding += scissorAet[scissorIndex++].direction;
|
|
|
2390 |
RI_ASSERT(scissorWinding >= 0);
|
|
|
2391 |
|
|
|
2392 |
if(scissorWinding)
|
|
|
2393 |
{
|
|
|
2394 |
Color c = src.readPixel(sx + i, sy + j);
|
|
|
2395 |
c.convert(getDescriptor().internalFormat);
|
|
|
2396 |
for(int s=0;s<m_numSamples;s++)
|
|
|
2397 |
writeSample(dx + i, dy + j, s, c);
|
|
|
2398 |
}
|
|
|
2399 |
}
|
|
|
2400 |
}
|
|
|
2401 |
}
|
|
|
2402 |
#endif
|
|
|
2403 |
|
|
|
2404 |
/*-------------------------------------------------------------------*//*!
|
|
|
2405 |
* \brief
|
|
|
2406 |
* \param
|
|
|
2407 |
* \return
|
|
|
2408 |
* \note
|
|
|
2409 |
*//*-------------------------------------------------------------------*/
|
|
|
2410 |
|
|
|
2411 |
#if 0
|
|
|
2412 |
void Surface::blit(const Surface* src, int sx, int sy, int dx, int dy, int w, int h)
|
|
|
2413 |
{
|
|
|
2414 |
Rectangle rect;
|
|
|
2415 |
rect.x = 0;
|
|
|
2416 |
rect.y = 0;
|
|
|
2417 |
rect.width = getWidth();
|
|
|
2418 |
rect.height = getHeight();
|
|
|
2419 |
Array<Rectangle> scissors;
|
|
|
2420 |
scissors.push_back(rect);
|
|
|
2421 |
blit(src, sx, sy, dx, dy, w, h, scissors);
|
|
|
2422 |
}
|
|
|
2423 |
#endif
|
|
|
2424 |
|
|
|
2425 |
/*-------------------------------------------------------------------*//*!
|
|
|
2426 |
* \brief
|
|
|
2427 |
* \param
|
|
|
2428 |
* \return
|
|
|
2429 |
* \note
|
|
|
2430 |
*//*-------------------------------------------------------------------*/
|
|
|
2431 |
|
|
|
2432 |
#if 0
|
|
|
2433 |
void Surface::blit(const Surface* src, int sx, int sy, int dx, int dy, int w, int h, const Array<Rectangle>& scissors)
|
|
|
2434 |
{
|
|
|
2435 |
RI_ASSERT(m_numSamples == src->m_numSamples);
|
|
|
2436 |
|
|
|
2437 |
//fb=>fb: vgCopyPixels
|
|
|
2438 |
computeBlitRegion(sx, sy, dx, dy, w, h, src->getWidth(), src->getHeight(), getWidth(), getHeight());
|
|
|
2439 |
if(w <= 0 || h <= 0)
|
|
|
2440 |
return; //zero area
|
|
|
2441 |
|
|
|
2442 |
Array<ScissorEdge> scissorEdges;
|
|
|
2443 |
for(int i=0;i<scissors.size();i++)
|
|
|
2444 |
{
|
|
|
2445 |
if(scissors[i].width > 0 && scissors[i].height > 0)
|
|
|
2446 |
{
|
|
|
2447 |
ScissorEdge e;
|
|
|
2448 |
e.miny = scissors[i].y;
|
|
|
2449 |
e.maxy = RI_INT_ADDSATURATE(scissors[i].y, scissors[i].height);
|
|
|
2450 |
|
|
|
2451 |
e.x = scissors[i].x;
|
|
|
2452 |
e.direction = 1;
|
|
|
2453 |
scissorEdges.push_back(e); //throws bad_alloc
|
|
|
2454 |
e.x = RI_INT_ADDSATURATE(scissors[i].x, scissors[i].width);
|
|
|
2455 |
e.direction = -1;
|
|
|
2456 |
scissorEdges.push_back(e); //throws bad_alloc
|
|
|
2457 |
}
|
|
|
2458 |
}
|
|
|
2459 |
if(!scissorEdges.size())
|
|
|
2460 |
return; //there are no scissor rectangles => nothing is visible
|
|
|
2461 |
|
|
|
2462 |
//sort scissor edges by edge x
|
|
|
2463 |
scissorEdges.sort();
|
|
|
2464 |
|
|
|
2465 |
Array<Color> tmp;
|
|
|
2466 |
tmp.resize(w*m_numSamples*h); //throws bad_alloc
|
|
|
2467 |
|
|
|
2468 |
//copy source region to tmp
|
|
|
2469 |
for(int j=0;j<h;j++)
|
|
|
2470 |
{
|
|
|
2471 |
for(int i=0;i<w;i++)
|
|
|
2472 |
{
|
|
|
2473 |
int numSamples = m_numSamples;
|
|
|
2474 |
for(int s=0;s<numSamples;s++)
|
|
|
2475 |
{
|
|
|
2476 |
Color c = src->m_image->readPixel((sx + i)*m_numSamples+s, sy + j);
|
|
|
2477 |
c.convert(m_image->getDescriptor().internalFormat);
|
|
|
2478 |
tmp[(j*w+i)*m_numSamples+s] = c;
|
|
|
2479 |
}
|
|
|
2480 |
}
|
|
|
2481 |
}
|
|
|
2482 |
|
|
|
2483 |
Array<ScissorEdge> scissorAet;
|
|
|
2484 |
for(int j=0;j<h;j++)
|
|
|
2485 |
{
|
|
|
2486 |
//gather scissor edges intersecting this scanline
|
|
|
2487 |
scissorAet.clear();
|
|
|
2488 |
for(int e=0;e<scissorEdges.size();e++)
|
|
|
2489 |
{
|
|
|
2490 |
const ScissorEdge& se = scissorEdges[e];
|
|
|
2491 |
if(dy + j >= se.miny && dy + j < se.maxy)
|
|
|
2492 |
scissorAet.push_back(scissorEdges[e]); //throws bad_alloc
|
|
|
2493 |
}
|
|
|
2494 |
if(!scissorAet.size())
|
|
|
2495 |
continue; //scissoring is on, but there are no scissor rectangles on this scanline
|
|
|
2496 |
|
|
|
2497 |
//blit a scanline
|
|
|
2498 |
int scissorWinding = 0;
|
|
|
2499 |
int scissorIndex = 0;
|
|
|
2500 |
for(int i=0;i<w;i++)
|
|
|
2501 |
{
|
|
|
2502 |
while(scissorIndex < scissorAet.size() && scissorAet[scissorIndex].x <= dx + i)
|
|
|
2503 |
scissorWinding += scissorAet[scissorIndex++].direction;
|
|
|
2504 |
RI_ASSERT(scissorWinding >= 0);
|
|
|
2505 |
|
|
|
2506 |
if(scissorWinding)
|
|
|
2507 |
{
|
|
|
2508 |
int numSamples = m_numSamples;
|
|
|
2509 |
for(int s=0;s<numSamples;s++)
|
|
|
2510 |
{
|
|
|
2511 |
m_image->writePixel((dx + i)*m_numSamples+s, dy + j, tmp[(j*w+i)*m_numSamples+s]);
|
|
|
2512 |
}
|
|
|
2513 |
}
|
|
|
2514 |
}
|
|
|
2515 |
}
|
|
|
2516 |
}
|
|
|
2517 |
#endif
|
|
|
2518 |
|
|
|
2519 |
/*-------------------------------------------------------------------*//*!
|
|
|
2520 |
* \brief
|
|
|
2521 |
* \param
|
|
|
2522 |
* \return
|
|
|
2523 |
* \note
|
|
|
2524 |
*//*-------------------------------------------------------------------*/
|
|
|
2525 |
|
|
|
2526 |
void Surface::mask(DynamicBlitter& blitter, const Image* src, VGMaskOperation operation, int x, int y, int w, int h)
|
|
|
2527 |
{
|
|
|
2528 |
RI_ASSERT(w > 0 && h > 0);
|
|
|
2529 |
RI_ASSERT(m_numSamples == 1);
|
|
|
2530 |
|
|
|
2531 |
if(operation == VG_CLEAR_MASK || operation == VG_FILL_MASK)
|
|
|
2532 |
{
|
|
|
2533 |
//intersect clear region with image bounds
|
|
|
2534 |
Rectangle r(0,0,getWidth(),getHeight());
|
|
|
2535 |
r.intersect(Rectangle(x,y,w,h));
|
|
|
2536 |
|
|
|
2537 |
if(!r.width || !r.height)
|
|
|
2538 |
return; //intersection is empty or one of the rectangles is invalid
|
|
|
2539 |
|
|
|
2540 |
{
|
|
|
2541 |
Color mcolor(1.0f, 1.0f, 1.0f, 1.0f, Color::sRGBA_PRE);
|
|
|
2542 |
if (operation == VG_CLEAR_MASK)
|
|
|
2543 |
mcolor = Color(0,0,0,0, Color::sRGBA_PRE);
|
|
|
2544 |
IntegerColor ic = IntegerColor(mcolor);
|
|
|
2545 |
RIuint32 p = ic.getPackedMaskColor(m_image->getDescriptor());
|
|
|
2546 |
m_image->fillPackedRectangle(r.x, r.y, r.width, r.height, p);
|
|
|
2547 |
}
|
|
|
2548 |
}
|
|
|
2549 |
else
|
|
|
2550 |
{
|
|
|
2551 |
int sx = 0, sy = 0, dx = x, dy = y;
|
|
|
2552 |
|
|
|
2553 |
computeBlitRegion(sx, sy, dx, dy, w, h, src->getWidth(), src->getHeight(), getWidth(), getHeight());
|
|
|
2554 |
|
|
|
2555 |
if(w <= 0 || h <= 0)
|
|
|
2556 |
return; //zero area
|
|
|
2557 |
|
|
|
2558 |
blitter.enableMaskOperation(true);
|
|
|
2559 |
blitter.setMaskOperation(operation);
|
|
|
2560 |
blitter.prepareBlit(this->m_image, src, sx, sy, dx, dy, w, h);
|
|
|
2561 |
blitter.blit();
|
|
|
2562 |
blitter.enableMaskOperation(false);
|
|
|
2563 |
#if 0
|
|
|
2564 |
RI_ASSERT(src);
|
|
|
2565 |
|
|
|
2566 |
int sx = 0, sy = 0, dx = x, dy = y;
|
|
|
2567 |
computeBlitRegion(sx, sy, dx, dy, w, h, src->getWidth(), src->getHeight(), getWidth(), getHeight());
|
|
|
2568 |
if(w <= 0 || h <= 0)
|
|
|
2569 |
return; //zero area
|
|
|
2570 |
|
|
|
2571 |
{
|
|
|
2572 |
for(int j=0;j<h;j++)
|
|
|
2573 |
{
|
|
|
2574 |
for(int i=0;i<w;i++)
|
|
|
2575 |
{
|
|
|
2576 |
RIfloat amask = src->readMaskPixel(sx + i, sy + j);
|
|
|
2577 |
if(operation == VG_SET_MASK)
|
|
|
2578 |
writeMaskCoverage(dx + i, dy + j, amask);
|
|
|
2579 |
else
|
|
|
2580 |
{
|
|
|
2581 |
RIfloat aprev = readMaskCoverage(dx + i, dy + j);
|
|
|
2582 |
RIfloat anew = 0.0f;
|
|
|
2583 |
switch(operation)
|
|
|
2584 |
{
|
|
|
2585 |
case VG_UNION_MASK: anew = 1.0f - (1.0f - amask)*(1.0f - aprev); break;
|
|
|
2586 |
case VG_INTERSECT_MASK: anew = amask * aprev; break;
|
|
|
2587 |
default: anew = aprev * (1.0f - amask); RI_ASSERT(operation == VG_SUBTRACT_MASK); break;
|
|
|
2588 |
}
|
|
|
2589 |
writeMaskCoverage(dx + i, dy + j, anew);
|
|
|
2590 |
}
|
|
|
2591 |
}
|
|
|
2592 |
}
|
|
|
2593 |
}
|
|
|
2594 |
#endif
|
|
|
2595 |
}
|
|
|
2596 |
}
|
|
|
2597 |
|
|
|
2598 |
/*-------------------------------------------------------------------*//*!
|
|
|
2599 |
* \brief
|
|
|
2600 |
* \param
|
|
|
2601 |
* \return
|
|
|
2602 |
* \note
|
|
|
2603 |
*//*-------------------------------------------------------------------*/
|
|
|
2604 |
|
|
|
2605 |
RIfloat Surface::readMaskCoverage(int x, int y) const
|
|
|
2606 |
{
|
|
|
2607 |
RI_ASSERT(x >= 0 && x < m_width && y >= 0 && y < m_height);
|
|
|
2608 |
RI_ASSERT(m_numSamples == 1);
|
|
|
2609 |
return m_image->readMaskPixel(x, y);
|
|
|
2610 |
}
|
|
|
2611 |
|
|
|
2612 |
void Surface::writeMaskCoverage(int x, int y, RIfloat m)
|
|
|
2613 |
{
|
|
|
2614 |
RI_ASSERT(x >= 0 && x < m_width && y >= 0 && y < m_height);
|
|
|
2615 |
RI_ASSERT(m_numSamples == 1);
|
|
|
2616 |
m_image->writeMaskPixel(x, y, m); //TODO support other than alpha formats but don't write to color channels?
|
|
|
2617 |
}
|
|
|
2618 |
|
|
|
2619 |
unsigned int Surface::readMaskMSAA(int x, int y) const
|
|
|
2620 |
{
|
|
|
2621 |
RI_ASSERT(x >= 0 && x < m_width && y >= 0 && y < m_height);
|
|
|
2622 |
RI_ASSERT(m_numSamples > 1);
|
|
|
2623 |
unsigned int m = 0;
|
|
|
2624 |
for(int i=0;i<m_numSamples;i++)
|
|
|
2625 |
{
|
|
|
2626 |
if(m_image->readMaskPixel(x*m_numSamples+i, y) > 0.5f) //TODO is this the right formula for converting alpha to bit mask? does it matter?
|
|
|
2627 |
m |= 1<<i;
|
|
|
2628 |
}
|
|
|
2629 |
return m;
|
|
|
2630 |
}
|
|
|
2631 |
|
|
|
2632 |
void Surface::writeMaskMSAA(int x, int y, unsigned int m)
|
|
|
2633 |
{
|
|
|
2634 |
RI_ASSERT(x >= 0 && x < m_width && y >= 0 && y < m_height);
|
|
|
2635 |
RI_ASSERT(m_numSamples > 1);
|
|
|
2636 |
for(int i=0;i<m_numSamples;i++)
|
|
|
2637 |
{
|
|
|
2638 |
RIfloat a = 0.0f;
|
|
|
2639 |
if(m & (1<<i))
|
|
|
2640 |
a = 1.0f;
|
|
|
2641 |
m_image->writeMaskPixel(x*m_numSamples+i, y, a); //TODO support other than alpha formats but don't write to color channels?
|
|
|
2642 |
}
|
|
|
2643 |
}
|
|
|
2644 |
|
|
|
2645 |
/*-------------------------------------------------------------------*//*!
|
|
|
2646 |
* \brief
|
|
|
2647 |
* \param
|
|
|
2648 |
* \return
|
|
|
2649 |
* \note
|
|
|
2650 |
*//*-------------------------------------------------------------------*/
|
|
|
2651 |
|
|
|
2652 |
Color Surface::FSAAResolve(int x, int y) const
|
|
|
2653 |
{
|
|
|
2654 |
if(m_numSamples == 1)
|
|
|
2655 |
return readSample(x, y, 0);
|
|
|
2656 |
|
|
|
2657 |
Color::InternalFormat aaFormat = getDescriptor().isLuminance() ? Color::lLA_PRE : Color::lRGBA_PRE; //antialias in linear color space
|
|
|
2658 |
Color r(0.0f, 0.0f, 0.0f, 0.0f, aaFormat);
|
|
|
2659 |
for(int i=0;i<m_numSamples;i++)
|
|
|
2660 |
{
|
|
|
2661 |
Color d = readSample(x, y, i);
|
|
|
2662 |
d.convert(aaFormat);
|
|
|
2663 |
r += d;
|
|
|
2664 |
}
|
|
|
2665 |
r *= 1.0f/m_numSamples;
|
|
|
2666 |
return r;
|
|
|
2667 |
}
|
|
|
2668 |
|
|
|
2669 |
|
|
|
2670 |
/**
|
|
|
2671 |
* \brief Return a resolved sample in packed format.
|
|
|
2672 |
* \note Further operations on color may require unpack.
|
|
|
2673 |
*/
|
|
|
2674 |
RI_INLINE RIuint32 Surface::FSAAResolvePacked(int x, int y) const
|
|
|
2675 |
{
|
|
|
2676 |
if (m_numSamples == 1)
|
|
|
2677 |
return readPackedSample(x, y, 0);
|
|
|
2678 |
|
|
|
2679 |
RI_ASSERT(false); /* Not implemented yet. */
|
|
|
2680 |
return 0xffffffffu;
|
|
|
2681 |
}
|
|
|
2682 |
|
|
|
2683 |
/*-------------------------------------------------------------------*//*!
|
|
|
2684 |
* \brief
|
|
|
2685 |
* \param
|
|
|
2686 |
* \return
|
|
|
2687 |
* \note
|
|
|
2688 |
*//*-------------------------------------------------------------------*/
|
|
|
2689 |
|
|
|
2690 |
Drawable::Drawable(const Color::Descriptor& desc, int width, int height, int numSamples, int maskBits) :
|
|
|
2691 |
m_referenceCount(0),
|
|
|
2692 |
m_color(NULL),
|
|
|
2693 |
m_mask(NULL)
|
|
|
2694 |
{
|
|
|
2695 |
RI_ASSERT(width > 0 && height > 0 && numSamples > 0 && numSamples <= 32);
|
|
|
2696 |
RI_ASSERT(maskBits == 0 || maskBits == 1 || maskBits == 4 || maskBits == 8);
|
|
|
2697 |
m_color = RI_NEW(Surface, (desc, width, height, numSamples)); //throws bad_alloc
|
|
|
2698 |
m_color->addReference();
|
|
|
2699 |
if(maskBits)
|
|
|
2700 |
{
|
|
|
2701 |
VGImageFormat mf = VG_A_1;
|
|
|
2702 |
if(maskBits == 4)
|
|
|
2703 |
mf = VG_A_4;
|
|
|
2704 |
else if(maskBits == 8)
|
|
|
2705 |
mf = VG_A_8;
|
|
|
2706 |
m_mask = RI_NEW(Surface, (Color::formatToDescriptor(mf), width, height, numSamples));
|
|
|
2707 |
m_mask->addReference();
|
|
|
2708 |
m_mask->clear(Color(1,1,1,1,Color::sRGBA), 0, 0, width, height);
|
|
|
2709 |
}
|
|
|
2710 |
}
|
|
|
2711 |
|
|
|
2712 |
/*-------------------------------------------------------------------*//*!
|
|
|
2713 |
* \brief
|
|
|
2714 |
* \param
|
|
|
2715 |
* \return
|
|
|
2716 |
* \note
|
|
|
2717 |
*//*-------------------------------------------------------------------*/
|
|
|
2718 |
|
|
|
2719 |
Drawable::Drawable(Image* image, int maskBits) :
|
|
|
2720 |
m_referenceCount(0),
|
|
|
2721 |
m_color(NULL),
|
|
|
2722 |
m_mask(NULL)
|
|
|
2723 |
{
|
|
|
2724 |
RI_ASSERT(maskBits == 0 || maskBits == 1 || maskBits == 4 || maskBits == 8);
|
|
|
2725 |
RI_ASSERT(image);
|
|
|
2726 |
m_color = RI_NEW(Surface, (image));
|
|
|
2727 |
m_color->addReference();
|
|
|
2728 |
if(maskBits)
|
|
|
2729 |
{
|
|
|
2730 |
VGImageFormat mf = VG_A_1;
|
|
|
2731 |
if(maskBits == 4)
|
|
|
2732 |
mf = VG_A_4;
|
|
|
2733 |
else if(maskBits == 8)
|
|
|
2734 |
mf = VG_A_8;
|
|
|
2735 |
m_mask = RI_NEW(Surface, (Color::formatToDescriptor(mf), image->getWidth(), image->getHeight(), 1));
|
|
|
2736 |
m_mask->addReference();
|
|
|
2737 |
m_mask->clear(Color(1,1,1,1,Color::sRGBA), 0, 0, image->getWidth(), image->getHeight());
|
|
|
2738 |
}
|
|
|
2739 |
}
|
|
|
2740 |
|
|
|
2741 |
/*-------------------------------------------------------------------*//*!
|
|
|
2742 |
* \brief
|
|
|
2743 |
* \param
|
|
|
2744 |
* \return
|
|
|
2745 |
* \note
|
|
|
2746 |
*//*-------------------------------------------------------------------*/
|
|
|
2747 |
|
|
|
2748 |
Drawable::Drawable(const Color::Descriptor& desc, int width, int height, int stride, RIuint8* data, int maskBits) :
|
|
|
2749 |
m_referenceCount(0),
|
|
|
2750 |
m_color(NULL),
|
|
|
2751 |
m_mask(NULL)
|
|
|
2752 |
{
|
|
|
2753 |
RI_ASSERT(width > 0 && height > 0);
|
|
|
2754 |
RI_ASSERT(maskBits == 0 || maskBits == 1 || maskBits == 4 || maskBits == 8);
|
|
|
2755 |
m_color = RI_NEW(Surface, (desc, width, height, stride, data)); //throws bad_alloc
|
|
|
2756 |
m_color->addReference();
|
|
|
2757 |
if(maskBits)
|
|
|
2758 |
{
|
|
|
2759 |
VGImageFormat mf = VG_A_1;
|
|
|
2760 |
if(maskBits == 4)
|
|
|
2761 |
mf = VG_A_4;
|
|
|
2762 |
else if(maskBits == 8)
|
|
|
2763 |
mf = VG_A_8;
|
|
|
2764 |
m_mask = RI_NEW(Surface, (Color::formatToDescriptor(mf), width, height, 1));
|
|
|
2765 |
m_mask->addReference();
|
|
|
2766 |
m_mask->clear(Color(1,1,1,1,Color::sRGBA), 0, 0, width, height);
|
|
|
2767 |
}
|
|
|
2768 |
}
|
|
|
2769 |
|
|
|
2770 |
/*-------------------------------------------------------------------*//*!
|
|
|
2771 |
* \brief
|
|
|
2772 |
* \param
|
|
|
2773 |
* \return
|
|
|
2774 |
* \note
|
|
|
2775 |
*//*-------------------------------------------------------------------*/
|
|
|
2776 |
|
|
|
2777 |
Drawable::~Drawable()
|
|
|
2778 |
{
|
|
|
2779 |
RI_ASSERT(m_referenceCount == 0);
|
|
|
2780 |
if(!m_color->removeReference())
|
|
|
2781 |
RI_DELETE(m_color);
|
|
|
2782 |
if(m_mask)
|
|
|
2783 |
if(!m_mask->removeReference())
|
|
|
2784 |
RI_DELETE(m_mask);
|
|
|
2785 |
}
|
|
|
2786 |
|
|
|
2787 |
/*-------------------------------------------------------------------*//*!
|
|
|
2788 |
* \brief
|
|
|
2789 |
* \param
|
|
|
2790 |
* \return
|
|
|
2791 |
* \note
|
|
|
2792 |
*//*-------------------------------------------------------------------*/
|
|
|
2793 |
|
|
|
2794 |
void Drawable::resize(VGContext* context, int newWidth, int newHeight)
|
|
|
2795 |
{
|
|
|
2796 |
Surface* oldcolor = m_color;
|
|
|
2797 |
Surface* oldmask = m_mask;
|
|
|
2798 |
int oldWidth = m_color->getWidth();
|
|
|
2799 |
int oldHeight = m_color->getHeight();
|
|
|
2800 |
|
|
|
2801 |
//TODO check that image is not a proxy
|
|
|
2802 |
m_color = RI_NEW(Surface, (m_color->getDescriptor(), newWidth, newHeight, m_color->getNumSamples()));
|
|
|
2803 |
m_color->addReference();
|
|
|
2804 |
if(m_mask)
|
|
|
2805 |
{
|
|
|
2806 |
m_mask = RI_NEW(Surface, (m_mask->getDescriptor(), newWidth, newHeight, m_mask->getNumSamples()));
|
|
|
2807 |
m_mask->addReference();
|
|
|
2808 |
}
|
|
|
2809 |
|
|
|
2810 |
int wmin = RI_INT_MIN(newWidth,oldWidth);
|
|
|
2811 |
int hmin = RI_INT_MIN(newHeight,oldHeight);
|
|
|
2812 |
m_color->clear(Color(0.0f, 0.0f, 0.0f, 0.0f, getDescriptor().internalFormat), 0, 0, m_color->getWidth(), m_color->getHeight());
|
|
|
2813 |
m_color->m_image->blit(context, oldcolor->m_image, 0, 0, 0, 0, wmin, hmin);
|
|
|
2814 |
if(m_mask)
|
|
|
2815 |
{
|
|
|
2816 |
m_mask->clear(Color(1.0f, 1.0f, 1.0f, 1.0f, getDescriptor().internalFormat), 0, 0, m_mask->getWidth(), m_mask->getHeight());
|
|
|
2817 |
m_mask->m_image->blit(context, oldmask->m_image, 0, 0, 0, 0, wmin, hmin);
|
|
|
2818 |
}
|
|
|
2819 |
|
|
|
2820 |
if(!oldcolor->removeReference())
|
|
|
2821 |
RI_DELETE(oldcolor);
|
|
|
2822 |
if(oldmask)
|
|
|
2823 |
if(!oldmask->removeReference())
|
|
|
2824 |
RI_DELETE(oldmask);
|
|
|
2825 |
}
|
|
|
2826 |
|
|
|
2827 |
#ifndef RI_COMPILE_LLVM_BYTECODE
|
|
|
2828 |
|
|
|
2829 |
#endif /* RI_COMPILE_LLVM_BYTECODE */
|
|
|
2830 |
|
|
|
2831 |
//==============================================================================================
|
|
|
2832 |
|
|
|
2833 |
} //namespace OpenVGRI
|
|
|
2834 |
|
|
|
2835 |
//==============================================================================================
|