Copy code from the holdingarea into the target locations.
Some initial rework of CMakeLists.txt files, but not yet tested.
/* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and /or associated documentation files
* (the "Materials "), to deal in the Materials without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Materials,
* and to permit persons to whom the Materials are furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Materials.
*
* THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE MATERIALS OR
* THE USE OR OTHER DEALINGS IN THE MATERIALS.
*/
// This file contains the generated pixel-pipeline code and provides
// interface to compile and run them.
#ifndef __RIRASTERIZER_H
# include "riRasterizer.h"
#endif
#ifndef __RIPIXELPIPE_H
# include "riPixelPipe.h"
#endif
#ifndef __SFDYNAMICPIXELPIPE_H
# include "sfDynamicPixelPipe.h"
#endif
#ifndef __RIUTILS_H
# include "riUtils.h"
#endif
#ifndef __SFMASK_H
# include "sfMask.h"
#endif
#ifndef __RIIMAGE_H
# include "riImage.h"
#endif
#if defined(RI_DEBUG)
# include <stdio.h>
#endif
namespace OpenVGRI {
RI_INLINE static bool alwaysLoadDst(const PixelPipe::SignatureState& state)
{
if (!state.isRenderToMask)
{
if (state.hasImage)
return true;
VGBlendMode bm = state.blendMode;
if (bm == VG_BLEND_SRC_IN ||
bm == VG_BLEND_DST_OVER ||
bm == VG_BLEND_DST_IN ||
bm == VG_BLEND_ADDITIVE ||
bm == VG_BLEND_MULTIPLY ||
bm == VG_BLEND_SCREEN ||
bm == VG_BLEND_DARKEN ||
bm == VG_BLEND_LIGHTEN)
{
return true;
} else
{
return false;
}
}
else
{
switch (state.maskOperation)
{
case VG_SET_MASK:
return false;
default:
return true;
}
}
}
RI_INLINE static bool canSolidFill(const PixelPipe::SignatureState& state)
{
if (state.isRenderToMask)
{
if (state.maskOperation == VG_SET_MASK ||
state.maskOperation == VG_UNION_MASK)
return true;
// \note SUBTRACT is also possible.
return false;
}
if (state.paintType != VG_PAINT_TYPE_COLOR)
return false;
if (state.hasImage)
return false;
// Some blendmodes can use dst color even if coverage == 1.0
if (state.blendMode != VG_BLEND_SRC && state.blendMode != VG_BLEND_SRC_OVER)
return false;
if (state.hasMasking)
return false;
if (state.fillColorTransparent)
return false;
if (state.hasColorTransform)
return false; // \todo Trace solid color alpha -> 1.0
return true;
}
RI_INLINE static int intReflectRepeat(int n, int bits)
{
const int mask = (1<<bits)-1;
return (n ^ (n << (31 - bits) >> 31)) & mask;
}
RI_INLINE static void applyGradientRepeat(int& sx0, int& sx1, PixelPipe::TilingMode sm)
{
switch (sm)
{
case PixelPipe::TILING_MODE_PAD:
sx0 = RI_INT_CLAMP(sx0, 0, PixelPipe::SAMPLE_MASK);
sx1 = RI_INT_CLAMP(sx1, 0, PixelPipe::SAMPLE_MASK);
break;
case PixelPipe::TILING_MODE_REFLECT:
sx0 = intReflectRepeat(sx0, PixelPipe::SAMPLE_BITS);
sx1 = intReflectRepeat(sx1, PixelPipe::SAMPLE_BITS);
break;
default:
RI_ASSERT(sm == PixelPipe::TILING_MODE_REPEAT);
sx0 = sx0 & PixelPipe::SAMPLE_MASK;
sx1 = sx1 & PixelPipe::SAMPLE_MASK;
break;
}
RI_ASSERT(sx0 >= 0 && sx0 < (1<<Paint::GRADIENT_LUT_BITS));
RI_ASSERT(sx1 >= 0 && sx1 < (1<<Paint::GRADIENT_LUT_BITS));
}
RI_INLINE static IntegerColor readLUTColor(const PixelPipe::PPUniforms& uniforms, int i)
{
RI_ASSERT(i >= 0 && i <= Paint::GRADIENT_LUT_MASK);
return uniforms.gradientLookup[i];
}
/**
* \brief Sample linear gradient using integer-arithmetic.
* \note The actual gradient computation is done piecewise within the
* pixel-pipeline.
*/
RI_INLINE static IntegerColor intLinearGradient(const PixelPipe::SignatureState& state, const PixelPipe::PPUniforms& u, const PixelPipe::PPVariants& v)
{
RIint32 sx0 = v.sx >> (PixelPipe::GRADIENT_BITS - PixelPipe::SAMPLE_BITS);
RIint32 sx1 = sx0 + 1;
applyGradientRepeat(sx0, sx1, state.paintTilingMode);
IntegerColor ic0 = readLUTColor(u, sx0 >> (PixelPipe::SAMPLE_BITS - Paint::GRADIENT_LUT_BITS));
if (true)
{
return ic0;
} else
{
// bilinear interpolation
//RIint32 f1 = sx0;
readLUTColor(u, sx1 >> (PixelPipe::SAMPLE_BITS - Paint::GRADIENT_LUT_BITS));
RI_ASSERT(false);
return IntegerColor(0,0,0,0);
}
}
/**
* \brief Radial gradient implementation for the integer-pipeline. Will use float at least
* for the square-root. Will return integer-color always.
*/
RI_INLINE static IntegerColor intRadialGradient(const PixelPipe::SignatureState& state, const PixelPipe::PPUniforms& u, const PixelPipe::PPVariants& v)
{
RGScalar a = (v.rx * u.rfxp) + (v.ry * u.rfyp);
RGScalar b = u.rsqrp * (RI_SQR(v.rx) + RI_SQR(v.ry));
RGScalar c = RI_SQR((v.rx * u.rfyp) - (v.ry * u.rfxp));
RGScalar d = b - c;
RI_ASSERT(!RI_ISNAN(d) ? d >= 0.0f : true);
RGScalar g = (a + sqrtf(d));
int sx0 = RI_FLOAT_TO_FX(g, PixelPipe::SAMPLE_BITS);
int sx1 = sx0 + 1;
applyGradientRepeat(sx0, sx1, state.paintTilingMode);
IntegerColor ic0 = readLUTColor(u, sx0 >> (PixelPipe::SAMPLE_BITS - Paint::GRADIENT_LUT_BITS));
RI_ASSERT(ic0.r <= 255);
RI_ASSERT(ic0.g <= 255);
RI_ASSERT(ic0.b <= 255);
RI_ASSERT(ic0.a <= 255);
if (false)
{
// Linear interpolation of 2 gradient samples.
IntegerColor ic1 = readLUTColor(u, sx1 >> (PixelPipe::SAMPLE_BITS - Paint::GRADIENT_LUT_BITS));
//int fx0 = sx0 & PixelPipe::SAMPLE_MASK;
//int fx1 = PixelPipe::SAMPLE_MASK - fx0;
}
return ic0;
}
RI_INLINE static bool applyPatternRepeat(int &x, int &y, PixelPipe::TilingMode tilingMode)
{
switch (tilingMode)
{
case PixelPipe::TILING_MODE_PAD:
x = RI_INT_CLAMP(x, 0, PixelPipe::GRADIENT_MASK);
y = RI_INT_CLAMP(y, 0, PixelPipe::GRADIENT_MASK);
break;
case PixelPipe::TILING_MODE_REPEAT:
x = x & PixelPipe::GRADIENT_MASK;
y = y & PixelPipe::GRADIENT_MASK;
break;
case PixelPipe::TILING_MODE_REFLECT:
x = intReflectRepeat(x, PixelPipe::GRADIENT_BITS);
y = intReflectRepeat(y, PixelPipe::GRADIENT_BITS);
break;
default:
RI_ASSERT(tilingMode == PixelPipe::TILING_MODE_FILL);
// Do nothing -> Fill is checked on integer coordinates.
break;
}
return false;
}
/**
* \brief Same as applyPatternRepeat, but with pattern-space integer coordinates without
* fractional part.
* \note Assumes that the coordinate is in range [0,width or height].
*/
RI_INLINE static bool applyPatternSampleRepeat(int &x, int &y, int w, int h, PixelPipe::TilingMode tilingMode)
{
switch (tilingMode)
{
case PixelPipe::TILING_MODE_PAD:
RI_ASSERT(x >= 0 && x <= w);
RI_ASSERT(y >= 0 && y <= h);
if (x >= w) x = w-1;
if (y >= h) y = h-1;
break;
case PixelPipe::TILING_MODE_REPEAT:
RI_ASSERT(x >= 0 && x <= w);
RI_ASSERT(y >= 0 && y <= h);
if (x >= w) x = 0;
if (y >= h) y = 0;
break;
case PixelPipe::TILING_MODE_REFLECT:
RI_ASSERT(x >= 0 && x <= w);
RI_ASSERT(y >= 0 && y <= h);
if (x >= w) x = w-1; // w-2?
if (y >= h) y = h-1; // h-2?
break;
default:
RI_ASSERT(tilingMode == PixelPipe::TILING_MODE_FILL);
if (x < 0 || x >= w) return true;
if (y < 0 || y >= h) return true;
break;
}
return false;
}
RI_INLINE IntegerColor readPattern(const void* basePtr, int stride, const Color::Descriptor& desc, int ix, int iy, const IntegerColor* fillColor, bool fill)
{
const void* ptr = Image::calculateAddress(basePtr, desc.bitsPerPixel, ix, iy, stride);
if (!fill)
return IntegerColor(Image::readPackedPixelFromAddress(ptr, desc.bitsPerPixel, ix), desc);
else
{
RI_ASSERT(fillColor);
return *fillColor;
}
}
/**
* \brief Rescale the result of bilinear interpolation.
* \todo See if this or individual shifts and rounds are faster on x86
*/
RI_INLINE static RIuint32 bilinearDiv(unsigned int c)
{
RIuint32 rcp = 33026;
RIuint64 m = (RIuint64)c * rcp;
RIuint32 d = (RIuint32)(m >> 30);
return (d >> 1) + (d & 1);
}
/**
* \brief Read an optionally filtered sample from an image. For multiple samples, apply repeat
* for all the generated sampling points. This only implements a simple sampling: nearest
* or Linear filtering and is much simpler than the original RI.
* \param image Image to sample from
* \param sx0 Sample x in .8 fixed point. MUST be within the image except for FILL.
* \param sy0 Sample y in .8 fixed point. MUST be within the image except for FILL.
* \param samplerType Type of the sampler used.
* \param tilingMode Tiling mode for generated sample points, if required.
* \param fillColor Color to use for TILING_MODE_FILL
* \todo Where should we determine if a NN-sample needs to be unpacked?
* -> It is also easy to just read that sample separately.
*/
RI_INLINE static IntegerColor intSampleImage(
const void* ptr,
int stride,
int w,
int h,
const Color::Descriptor& desc,
RIint32 sx0,
RIint32 sy0,
PixelPipe::SamplerType samplerType,
PixelPipe::TilingMode tilingMode,
const IntegerColor* fillColor)
{
RI_ASSERT(fillColor || (tilingMode != PixelPipe::TILING_MODE_FILL));
// \todo The following code is between low- and high-level representation of sampling.
// It should probably be modified to appear fully as low-level, since we want as many
// optimizations as possible.
const bool bilinear = samplerType == PixelPipe::SAMPLER_TYPE_LINEAR;
IntegerColor retColor;
bool maybeFill = tilingMode == PixelPipe::TILING_MODE_FILL;
bool fillSample = false;
RIint32 ix, iy;
IntegerColor ic00;
RIint32 fx = sx0 & 0xff;
RIint32 fy = sy0 & 0xff;
ix = sx0 >> PixelPipe::SAMPLE_BITS;
iy = sy0 >> PixelPipe::SAMPLE_BITS;
if (maybeFill)
{
if (ix < 0 || ix >= w)
fillSample = true;
if (iy < 0 || iy >= h)
fillSample = true;
}
ic00 = readPattern(ptr, stride, desc, ix, iy, fillColor, fillSample);
if (!bilinear)
{
retColor = ic00;
retColor.expandColor(desc); // \todo Handling of bilinear?
}
else
{
// Bilinear filtering.
IntegerColor ic01, ic10, ic11;
IntegerColor t0, t1;
int xs = ix + 1;
int ys = iy;
fillSample = applyPatternSampleRepeat(xs, ys, w, h, tilingMode);
ic01 = readPattern(ptr, stride, desc, xs, ys, fillColor, fillSample);
t0 = IntegerColor::linearBlendNS(ic00, ic01, fx);
xs = ix;
ys = iy+1;
fillSample = applyPatternSampleRepeat(xs, ys, w, h, tilingMode);
ic10 = readPattern(ptr, stride, desc, xs, ys, fillColor, fillSample);
xs = ix+1;
ys = iy+1;
fillSample = applyPatternSampleRepeat(xs, ys, w, h, tilingMode);
ic11 = readPattern(ptr, stride, desc, xs, ys, fillColor, fillSample);
t1 = IntegerColor::linearBlendNS(ic10, ic11, fx);
retColor = IntegerColor::linearBlendNS(t0, t1, fy);
retColor.r = bilinearDiv(retColor.r);
retColor.g = bilinearDiv(retColor.g);
retColor.b = bilinearDiv(retColor.b);
retColor.a = bilinearDiv(retColor.a);
return retColor;
}
return retColor;
}
RI_INLINE static RIint32 gradientToFixedCoords(RIint32 gradCoord, RIint32 dim)
{
return (RIint32)(((RIint64)dim * gradCoord) >> (PixelPipe::GRADIENT_BITS - PixelPipe::SAMPLE_BITS));
}
RI_INLINE static IntegerColor intPattern(const PixelPipe::SignatureState &state, const PixelPipe::PPUniforms& u, const PixelPipe::PPVariants& v)
{
// \todo The following code is between low- and high-level representation of sampling.
// It should probably be modified to appear fully as low-level, since we want as many
// optimizations as possible.
// "External" variables
const PixelPipe::TilingMode tilingMode = state.paintTilingMode;
const IntegerColor fillColor = u.tileFillColor;
const int w = u.paint_width;
const int h = u.paint_height;
IntegerColor retColor;
RIint32 sx0 = v.sx;
RIint32 sy0 = v.sy;
IntegerColor ic00;
applyPatternRepeat(sx0, sy0, tilingMode);
sx0 = gradientToFixedCoords(sx0, w);
sy0 = gradientToFixedCoords(sy0, h);
//sx0 = (RIint32)(((RIint64)w * sx0) >> (PixelPipe::GRADIENT_BITS - PixelPipe::SAMPLE_BITS));
//sy0 = (RIint32)(((RIint64)h * sy0) >> (PixelPipe::GRADIENT_BITS - PixelPipe::SAMPLE_BITS));
const void* ptr = u.patternPtr;
const int stride = u.patternStride;
const Color::Descriptor& desc = state.patternDesc;
return intSampleImage(ptr, stride, w, h, desc, sx0, sy0, state.paintSampler, tilingMode, &fillColor);
}
RI_INLINE static bool formatPremultipliedAfterSampling(const Color::Descriptor& desc, PixelPipe::SamplerType samplerType, PixelPipe::ImageGradientType gradientType)
{
// Sampled at pixel centers -> no processing of colors -> does not get premultiplied
if (gradientType == PixelPipe::GRADIENT_TYPE_INTEGER)
return desc.isPremultiplied();
if (samplerType != PixelPipe::SAMPLER_TYPE_NEAREST)
return true;
return desc.isPremultiplied();
}
RI_INLINE static bool imagePremultipliedAfterSampling(const PixelPipe::SignatureState& state)
{
RI_ASSERT(state.hasImage);
return formatPremultipliedAfterSampling(state.imageDesc, state.imageSampler, state.imageGradientType);
}
RI_INLINE static bool gradientPremultipliedAfterSampling(const PixelPipe::SignatureState& state)
{
if (state.paintSampler != PixelPipe::SAMPLER_TYPE_NEAREST)
return true;
return true;
// Otherwise, the gradient value is a single sample, and should be in the destination
// color-space:
//return state.dstDesc.isPremultiplied();
}
RI_INLINE static bool patternPremultipliedAfterSampling(const PixelPipe::SignatureState& state)
{
RI_ASSERT(state.paintType == VG_PAINT_TYPE_PATTERN);
return formatPremultipliedAfterSampling(state.patternDesc, state.paintSampler, PixelPipe::GRADIENT_TYPE_FIXED);
}
/**
* \brief Returns true if generated paint will be in RGB, false if luminance.
*/
RI_INLINE static bool paintInRGB(const PixelPipe::SignatureState& state)
{
if (state.paintType != VG_PAINT_TYPE_PATTERN)
return true;
return !state.patternDesc.isLuminance();
}
/**
* \brief Applies color transform to input color
* \param isNonlinear "true" if input is nonlinear. This only affects luminance -> RGB conversion,
* other conversions happen in the input color-space.
* \note Leaves the color unpremultiplied, in source color-space and converts luminance to RGB
* \todo isNonlinear is not needed. It can be deduced from the state information!
*/
RI_INLINE static IntegerColor maybeColorTransform(const PixelPipe::SignatureState& state, const IntegerColor& c, const RIint32* colorTransformValues, bool isNonlinear)
{
if (!state.hasColorTransform)
return c;
RI_ASSERT(state.hasImage || state.paintType == VG_PAINT_TYPE_PATTERN);
IntegerColor r = c;
if (state.imageMode == VG_DRAW_IMAGE_MULTIPLY)
{
r.unpremultiply();
}
else if (state.imageMode == VG_DRAW_IMAGE_STENCIL || state.paintType == VG_PAINT_TYPE_PATTERN)
{
// -> Check pattern
if (patternPremultipliedAfterSampling(state))
r.unpremultiply();
}
else
{
// -> Check image
if (imagePremultipliedAfterSampling(state))
r.unpremultiply();
}
// Check if it is necessary to convert to RGB:
if (state.imageMode == VG_DRAW_IMAGE_MULTIPLY)
{
if (state.imageDesc.isLuminance() && !paintInRGB(state))
{
r.fullLuminanceToRGB(false, isNonlinear, false, isNonlinear);
}
}
else if (state.imageMode == VG_DRAW_IMAGE_STENCIL)
{
if (state.patternDesc.isLuminance())
r.fullLuminanceToRGB(false, isNonlinear, false, isNonlinear);
}
// \todo Use lookup-tables in some cases?
r.r = (((RIint32)r.r * colorTransformValues[0]) >> PixelPipe::COLOR_TRANSFORM_BITS) + colorTransformValues[4];
r.g = (((RIint32)r.g * colorTransformValues[1]) >> PixelPipe::COLOR_TRANSFORM_BITS) + colorTransformValues[5];
r.b = (((RIint32)r.b * colorTransformValues[2]) >> PixelPipe::COLOR_TRANSFORM_BITS) + colorTransformValues[6];
r.a = (((RIint32)r.a * colorTransformValues[3]) >> PixelPipe::COLOR_TRANSFORM_BITS) + colorTransformValues[7];
// Clamp (integerColor?)
r.r = (RIuint32)RI_INT_CLAMP((int)r.r, 0, 255);
r.g = (RIuint32)RI_INT_CLAMP((int)r.g, 0, 255);
r.b = (RIuint32)RI_INT_CLAMP((int)r.b, 0, 255);
r.a = (RIuint32)RI_INT_CLAMP((int)r.a, 0, 255);
return r;
}
/// Some rounding multiplications for blends:
/**
* \brief Multiply with rounding.
*/
RI_INLINE static RIuint32 rMul2(RIuint32 c0, RIuint32 c1, RIuint32 k0, RIuint32 k1)
{
RIuint32 t = c0 * k0 + c1 * k1;
//RIuint32 r = (t + (t>>9)) >> 8;
RIuint32 r = (t + (1>>7))>>8;
RI_ASSERT(r <= 255);
return r;
}
/**
* \brief Returns rounding color-multiplication: c0 + c1 * k
*/
RI_INLINE static RIuint32 rMul1(RIuint32 c0, RIuint32 c1, RIuint32 k)
{
RIuint32 t = c1 * k;
RIuint32 r = c0 + ((t + (t >> 7)) >> 8);
RI_ASSERT(r <= 255);
return r;
}
/**
* \brief Fixed-point multiplication
*/
RI_INLINE static RIuint32 rMul(RIuint32 c0, RIuint32 f)
{
RIuint32 t = c0 * f;
return (t + (1<<7))>>8;
}
/**
* \brief Multiply two colors [0, 255]
*/
RI_INLINE static RIuint32 cMul(RIuint32 c0, RIuint32 c1)
{
RIuint32 t = c0 * c1;
RIuint32 r = (t + (t >> 9)) >> 8;
//RIuint32 t = c0 * c1;
//RIuint32 r = (t + (t >> 7))>>8;
RI_ASSERT(r <= 255);
return r;
}
// \todo Are signed versions required?
RI_INLINE static RIuint32 cMin(RIuint32 c0, RIuint32 c1)
{
return c0 <= c1 ? c0 : c1;
}
RI_INLINE static RIuint32 cMax(RIuint32 c0, RIuint32 c1)
{
return c0 >= c1 ? c0 : c1;
}
/**
* \brief Blends two integer colors. Only considers the alpha-channels within
* the colors themselves. There should be a separate function to do
* blending with individual channel-alphas.
* \note It is also possible that LLVM is able to detect, whether individual alpha-
* channels contain a single/multi alpha
* \todo Overall, check how much and how fast LLVM is able to optimize out unused
* expressions.
*/
RI_INLINE static IntegerColor blendIntegerColors(const IntegerColor& s, const IntegerColor& d, VGBlendMode blendMode)
{
IntegerColor r;
switch(blendMode)
{
case VG_BLEND_SRC:
r = s;
break;
case VG_BLEND_SRC_OVER:
{
RIuint32 ia = 255 - s.a;
r.r = rMul1(s.r, d.r, ia);
r.g = rMul1(s.g, d.g, ia);
r.b = rMul1(s.b, d.b, ia);
r.a = rMul1(s.a, d.a, ia);
break;
}
case VG_BLEND_DST_OVER:
{
RIuint32 ia = 255 - d.a;
r.r = rMul1(d.r, s.r, ia);
r.g = rMul1(d.g, s.g, ia);
r.b = rMul1(d.b, s.b, ia);
r.a = rMul1(d.a, s.a, ia);
break;
}
case VG_BLEND_SRC_IN:
{
r.r = cMul(s.r, d.a);
r.g = cMul(s.g, d.a);
r.b = cMul(s.b, d.a);
r.a = cMul(s.a, d.a);
break;
}
case VG_BLEND_DST_IN:
{
r.r = cMul(d.r, s.a);
r.g = cMul(d.g, s.a);
r.b = cMul(d.b, s.a);
r.a = cMul(d.a, s.a);
break;
}
case VG_BLEND_MULTIPLY:
{
RIuint32 iasrc, iadst;
iasrc = 255 - s.a;
iadst = 255 - d.a;
r.r = rMul2(s.r, d.r, iadst + d.r, iasrc);
r.g = rMul2(s.g, d.g, iadst + d.g, iasrc);
r.b = rMul2(s.b, d.b, iadst + d.b, iasrc);
r.a = rMul1(s.a, d.a, iasrc);
break;
}
case VG_BLEND_SCREEN:
{
r.r = rMul1(s.r, d.r, 255 - s.r);
r.g = rMul1(s.g, d.g, 255 - s.g);
r.b = rMul1(s.b, d.b, 255 - s.b);
r.a = rMul1(s.a, d.a, 255 - s.a);
break;
}
case VG_BLEND_DARKEN:
{
RIuint32 iasrc = 255 - s.a;
RIuint32 iadst = 255 - d.a;
r.r = cMin(rMul1(s.r, d.r, iasrc), rMul1(d.r, s.r, iadst));
r.g = cMin(rMul1(s.g, d.g, iasrc), rMul1(d.g, s.g, iadst));
r.b = cMin(rMul1(s.b, d.b, iasrc), rMul1(d.b, s.b, iadst));
r.a = rMul1(s.a, d.a, iasrc);
break;
}
case VG_BLEND_LIGHTEN:
{
// \todo Compact darken w/r lighten?
RIuint32 iasrc = 255 - s.a;
RIuint32 iadst = 255 - d.a;
r.r = cMax(rMul1(s.r, d.r, iasrc), rMul1(d.r, s.r, iadst));
r.g = cMax(rMul1(s.g, d.g, iasrc), rMul1(d.g, s.g, iadst));
r.b = cMax(rMul1(s.b, d.b, iasrc), rMul1(d.b, s.b, iadst));
//although the statement below is equivalent to r.a = s.a + d.a * (1.0f - s.a)
//in practice there can be a very slight difference because
//of the max operation in the blending formula that may cause color to exceed alpha.
//Because of this, we compute the result both ways and return the maximum.
r.a = cMax(rMul1(s.a, d.a, iasrc), rMul1(d.a, s.a, iadst));
break;
}
default:
{
RI_ASSERT(blendMode == VG_BLEND_ADDITIVE);
r.r = cMin(s.r + d.r, 255);
r.g = cMin(s.g + d.g, 255);
r.b = cMin(s.b + d.b, 255);
r.a = cMin(s.a + d.a, 255);
break;
}
}
return r;
}
RI_INLINE static IntegerColor blendIntegerStencil(const IntegerColor& s, const IntegerColor& im, const IntegerColor& d, VGBlendMode blendMode)
{
IntegerColor r;
switch(blendMode)
{
case VG_BLEND_SRC:
r = s;
break;
case VG_BLEND_SRC_OVER:
{
r.r = rMul1(s.r, d.r, 255 - im.r);
r.g = rMul1(s.g, d.g, 255 - im.g);
r.b = rMul1(s.b, d.b, 255 - im.b);
r.a = rMul1(s.a, d.a, 255 - s.a);
break;
}
case VG_BLEND_DST_OVER:
{
r = blendIntegerColors(s, d, blendMode);
break;
}
case VG_BLEND_SRC_IN:
{
r = blendIntegerColors(s, d, blendMode);
break;
}
case VG_BLEND_DST_IN:
{
r.r = cMul(d.r, im.r);
r.g = cMul(d.g, im.g);
r.b = cMul(d.b, im.b);
r.a = cMul(d.a, s.a);
break;
}
case VG_BLEND_MULTIPLY:
{
RIuint32 iadst;
iadst = 255 - d.a;
r.r = rMul2(s.r, d.r, iadst + d.r, 255 - im.r);
r.g = rMul2(s.g, d.g, iadst + d.g, 255 - im.g);
r.b = rMul2(s.b, d.b, iadst + d.b, 255 - im.b);
r.a = rMul1(s.a, d.a, 255 - s.a);
break;
}
case VG_BLEND_SCREEN:
{
r = blendIntegerColors(s, d, blendMode);
break;
}
case VG_BLEND_DARKEN:
{
RIuint32 iadst = 255 - d.a;
r.r = cMin(rMul1(s.r, d.r, 255 - im.r), rMul1(d.r, s.r, iadst));
r.g = cMin(rMul1(s.g, d.g, 255 - im.g), rMul1(d.g, s.g, iadst));
r.b = cMin(rMul1(s.b, d.b, 255 - im.b), rMul1(d.b, s.b, iadst));
r.a = rMul1(s.a, d.a, 255 - s.a);
break;
}
case VG_BLEND_LIGHTEN:
{
// \todo Compact darken w/r lighten?
RIuint32 iadst = 255 - d.a;
r.r = cMax(rMul1(s.r, d.r, 255 - im.r), rMul1(d.r, s.r, iadst));
r.g = cMax(rMul1(s.g, d.g, 255 - im.g), rMul1(d.g, s.g, iadst));
r.b = cMax(rMul1(s.b, d.b, 255 - im.b), rMul1(d.b, s.b, iadst));
//although the statement below is equivalent to r.a = s.a + d.a * (1.0f - s.a)
//in practice there can be a very slight difference because
//of the max operation in the blending formula that may cause color to exceed alpha.
//Because of this, we compute the result both ways and return the maximum.
r.a = cMax(rMul1(s.a, d.a, 255 - s.a), rMul1(d.a, s.a, iadst));
break;
}
default:
{
RI_ASSERT(blendMode == VG_BLEND_ADDITIVE);
return blendIntegerColors(s, d, blendMode);
break;
}
}
return r;
}
/**
* \brief Perform SRC_OVER and apply coverage in a single operation.
* \note It is possible to do optimizations like this for other blending operations,
* but they are not as widely used -> optimize if there is a requirement.
* \note Prints are included because GDB is confused about the value of r.
*/
static RI_INLINE IntegerColor srcOverCoverage(const IntegerColor& s, const IntegerColor& d, RIuint32 cov)
{
IntegerColor r;
RIuint32 ac = ((s.a + (s.a>>7)) * cov);
ac = (ac + (1<<7))>>8;
RIuint32 ia = 256 - ac;
r.r = rMul2(s.r, d.r, cov, ia);
r.g = rMul2(s.g, d.g, cov, ia);
r.b = rMul2(s.b, d.b, cov, ia);
r.a = rMul2(s.a, d.a, cov, ia);
//r.r = (s.r * cov + d.r * ia) >> 8;
//r.g = (s.g * cov + d.g * ia) >> 8;
//r.b = (s.b * cov + d.b * ia) >> 8;
//r.a = (s.a * cov + d.a * ia) >> 8;
#if defined(RI_DEBUG)
if (!(r.r <= r.a && r.g <= r.a && r.b <= r.a && r.a <= 255))
{
printf("r: %d, g: %d, b: %d, a: %d\n",r.r,r.g,r.b,r.a);
RI_ASSERT(false);
}
//RI_ASSERT(r.r <= 255 && r.g <= 255 && r.b <= 255 && r.a <= 255);
#endif
return r;
}
/**
* \brief Check if converting between two color formats requires a gamma-conversion.
* \todo Move this to descriptor class.
*/
static RI_INLINE bool needGammaConvert(const Color::Descriptor& srcDesc, const Color::Descriptor& dstDesc)
{
//if ((!srcDesc.isAlphaOnly()) && (srcDesc.isNonlinear() != dstDesc.isNonlinear()))
//return true;
if ((srcDesc.isNonlinear() != dstDesc.isNonlinear()))
return true;
return false;
}
RI_INLINE static bool preBlendPremultiplication(const PixelPipe::SignatureState& state)
{
// \todo Simplify the rules (see the corresponding places in the pixelpipe
const bool colorTransform = state.hasColorTransform;
if (PixelPipe::isImageOnly(state))
{
if (colorTransform)
return true;
// Gamma conversion will leave the result premultiplied
if (needGammaConvert(state.imageDesc, state.dstDesc))
return true;
//if (state.imageDesc.isAlphaOnly())
//return false;
return !imagePremultipliedAfterSampling(state);
}
if (state.hasImage)
{
if (state.imageMode == VG_DRAW_IMAGE_NORMAL)
return !imagePremultipliedAfterSampling(state);
// Image color has been combined with the paint color and that requires premultiplication
if (state.imageMode == VG_DRAW_IMAGE_MULTIPLY)
return false; // Always results in a premultiplied output color
return false; // ?
}
if (state.paintType == VG_PAINT_TYPE_COLOR)
return false;
if (state.paintType != VG_PAINT_TYPE_PATTERN)
return !gradientPremultipliedAfterSampling(state);
// Must be pattern
RI_ASSERT(state.paintType == VG_PAINT_TYPE_PATTERN);
if (state.hasColorTransform)
return true;
if (needGammaConvert(state.patternDesc, state.dstDesc))
return true;
return !patternPremultipliedAfterSampling(state);
}
/**
* \brief Apply coverage [0 .. 256] on color
* \note This is actually "just coverage".
*/
RI_INLINE static IntegerColor srcCoverage(const IntegerColor& s, const IntegerColor& d, RIuint32 cov)
{
IntegerColor r;
RIuint32 icov = 256-cov;
// Make function for multiplication between fixed point values (coverage is
// a proper [0 .. 1] value.
r.r = (s.r * cov + d.r * icov) >> 8;
r.g = (s.g * cov + d.g * icov) >> 8;
r.b = (s.b * cov + d.b * icov) >> 8;
r.a = (s.a * cov + d.a * icov) >> 8;
RI_ASSERT(r.r <= 255 && r.g <= 255 && r.b <= 255 && r.a <= 255);
return r;
}
/**
* \brief Converts color gamma only. Care must be taken concerning luminance color formats.
* \return Converted color in "color". This will always be unpremultiplied if gamma conversion
* takes place, i.e, tries to minimize the amount of further conversions.
*/
RI_INLINE static void maybeGammaConvert(const Color::Descriptor& srcDesc, const Color::Descriptor& dstDesc, IntegerColor& color, bool inputPremultiplied)
{
if (needGammaConvert(srcDesc, dstDesc))
{
if (inputPremultiplied)
color.unpremultiply();
//color.unpremultiply(srcDesc.isLuminance());
if (dstDesc.isNonlinear())
color.linearToGamma();
else
color.gammaToLinear();
}
// Output always unpremultiplied if gamma conversion takes place
}
/**
* \brief Integer pixel-pipeline.
* \note See internal_formats.txt for info on how the data is passed within the pipeline
*/
RI_INLINE static void intPixelPipe(const PixelPipe::SignatureState& signatureState, const PixelPipe::PPUniforms &uniforms, PixelPipe::PPVariants& variants)
{
const RIuint32 ppMaxCoverage = Rasterizer::MAX_COVERAGE << (8 - Rasterizer::SAMPLE_BITS);
RIuint32 coverage = variants.coverage << (8 - Rasterizer::SAMPLE_BITS);
IntegerColor out;
IntegerColor imageColor; // imagemode != normal
const Color::Descriptor& dstDesc = signatureState.dstDesc;
const Color::Descriptor& patternDesc = signatureState.patternDesc;
const Color::Descriptor& imageDesc = signatureState.imageDesc;
if (!PixelPipe::isImageOnly(signatureState))
{
switch(signatureState.paintType)
{
case VG_PAINT_TYPE_COLOR:
out = uniforms.solidColor;
break;
case VG_PAINT_TYPE_LINEAR_GRADIENT:
out = intLinearGradient(signatureState, uniforms, variants);
variants.sx += uniforms.dgdx;
// \todo Optimize this so that the lookup is in premultiplied dst format!
// How about image-operations?
if ((signatureState.imageMode != VG_DRAW_IMAGE_MULTIPLY) && dstDesc.isLuminance())
{
out.fullRGBToLuminance(true, dstDesc.isNonlinear(), true, dstDesc.isNonlinear());
}
break;
case VG_PAINT_TYPE_RADIAL_GRADIENT:
out = intRadialGradient(signatureState, uniforms, variants);
variants.rx += uniforms.rdxdx;
variants.ry += uniforms.rdydx;
// \todo Optimize this so that the lookup is in premultiplied dst format!
if ((signatureState.imageMode != VG_DRAW_IMAGE_MULTIPLY) && dstDesc.isLuminance())
{
out.fullRGBToLuminance(true, dstDesc.isNonlinear(), true, dstDesc.isNonlinear());
}
break;
default:
RI_ASSERT(signatureState.paintType == VG_PAINT_TYPE_PATTERN);
out = intPattern(signatureState, uniforms, variants);
// color-space == pattern color-space, not always premultiplied, expanded
//
// \todo Only increment the proper pixel-counters. This requires detecting the
// transform type before generating the pixel-pipeline.
// \note Implement fastpaths for at least identity transform with image edges coinciding
// with the pixel edges. <- This has been done for images.
variants.sx += uniforms.paint_dxdx;
variants.sy += uniforms.paint_dydx;
if (!patternDesc.hasAlpha())
out.a = 255;
if (!signatureState.hasImage)
{
out = maybeColorTransform(signatureState, out, uniforms.colorTransformValues, patternDesc.isNonlinear());
const bool tmpPre = patternPremultipliedAfterSampling(signatureState) && !signatureState.hasColorTransform;
const bool outLuminance = !signatureState.hasColorTransform && imageDesc.isLuminance();
if (outLuminance != dstDesc.isLuminance())
{
if (outLuminance)
out.fullLuminanceToRGB(tmpPre, patternDesc.isNonlinear(), tmpPre, patternDesc.isNonlinear());
else
out.fullRGBToLuminance(tmpPre, patternDesc.isNonlinear(), tmpPre, patternDesc.isNonlinear());
}
maybeGammaConvert(patternDesc, dstDesc, out, tmpPre);
}
break;
}
}
if (signatureState.hasImage)
{
switch (signatureState.imageGradientType)
{
case PixelPipe::GRADIENT_TYPE_INTEGER:
{
void* addr = Image::calculateAddress(uniforms.imagePtr, imageDesc.bitsPerPixel, variants.iImageX, variants.iImageY, uniforms.imageStride);
RIuint32 packedImageColor = Image::readPackedPixelFromAddress(addr, imageDesc.bitsPerPixel, variants.iImageX);
imageColor.fromPackedColor(packedImageColor, imageDesc);
imageColor.expandColor(imageDesc);
// color-space == image color-space, not always premultiplied, expanded
// Only integer image-gradient can have unsafe image data as an input at the moment.
if (signatureState.unsafeImageInput)
{
if (imageDesc.hasAlpha() && imageDesc.isPremultiplied())
imageColor.clampToAlpha();
}
variants.iImageX += uniforms.image_idxdx;
variants.iImageY += uniforms.image_idydx;
break;
}
case PixelPipe::GRADIENT_TYPE_FIXED:
{
RI_ASSERT(!signatureState.unsafeImageInput);
RIint32 sx, sy;
sx = variants.iImageX;
sy = variants.iImageY;
applyPatternRepeat(sx, sy, PixelPipe::TILING_MODE_PAD);
sx = gradientToFixedCoords(sx, uniforms.image_iWidth);
sy = gradientToFixedCoords(sy, uniforms.image_iHeight);
imageColor = intSampleImage(
uniforms.imagePtr,
uniforms.imageStride,
uniforms.image_iWidth,
uniforms.image_iHeight,
imageDesc,
sx, sy, signatureState.imageSampler, PixelPipe::TILING_MODE_PAD, NULL);
variants.iImageX += uniforms.image_idxdx;
variants.iImageY += uniforms.image_idydx;
break;
}
default:
{
RI_ASSERT(signatureState.imageGradientType == PixelPipe::GRADIENT_TYPE_FLOAT);
RI_ASSERT(!signatureState.unsafeImageInput);
RIfloat fx, fy, fw, rw;
fx = variants.fImageX;
fy = variants.fImageY;
fw = variants.fImageW;
rw = 1.0f / fw;
RIint32 sx0, sy0;
fx = RI_CLAMP(fx * rw, 0.0f, uniforms.image_fWidth - 1.0f); // \todo fImageMaxX
fy = RI_CLAMP(fy * rw, 0.0f, uniforms.image_fHeight - 1.0f);
sx0 = RI_ROUND_TO_INT(fx * (1<<PixelPipe::SAMPLE_BITS));
sy0 = RI_ROUND_TO_INT(fy * (1<<PixelPipe::SAMPLE_BITS));
imageColor = intSampleImage(
uniforms.imagePtr,
uniforms.imageStride,
uniforms.image_iWidth,
uniforms.image_iHeight,
imageDesc,
sx0, sy0, signatureState.imageSampler, PixelPipe::TILING_MODE_PAD, NULL);
variants.fImageX += uniforms.image_fdxdx;
variants.fImageY += uniforms.image_fdydx;
variants.fImageW += uniforms.image_fdwdx;
break;
}
}
if (!imageDesc.hasAlpha())
imageColor.a = 255;
if (PixelPipe::isImageOnly(signatureState))
{
RI_ASSERT(signatureState.imageMode == VG_DRAW_IMAGE_NORMAL);
out = maybeColorTransform(signatureState, imageColor, uniforms.colorTransformValues, imageDesc.isNonlinear());
const bool tmpPre = imagePremultipliedAfterSampling(signatureState) && !signatureState.hasColorTransform;
const bool outLuminance = !signatureState.hasColorTransform && imageDesc.isLuminance();
// Color-format conversion to dst before blending.
if (outLuminance != dstDesc.isLuminance())
{
if (outLuminance)
out.fullLuminanceToRGB(tmpPre, imageDesc.isNonlinear(), tmpPre, imageDesc.isNonlinear());
else
out.fullRGBToLuminance(tmpPre, imageDesc.isNonlinear(), tmpPre, imageDesc.isNonlinear());
}
maybeGammaConvert(imageDesc, dstDesc, out, tmpPre);
//if (!signatureState.hasColorTransform)
//out.premultiply();
}
else
{
RI_ASSERT(signatureState.imageMode != VG_DRAW_IMAGE_NORMAL);
if (!imagePremultipliedAfterSampling(signatureState))
imageColor.premultiply();
if (signatureState.imageMode == VG_DRAW_IMAGE_MULTIPLY)
{
if (signatureState.paintType == VG_PAINT_TYPE_PATTERN &&
!patternPremultipliedAfterSampling(signatureState))
{
out.premultiply();
}
out.r = cMul(out.r, imageColor.r);
out.g = cMul(out.g, imageColor.g);
out.b = cMul(out.b, imageColor.b);
out.a = cMul(out.a, imageColor.a);
out = maybeColorTransform(signatureState, out, uniforms.colorTransformValues, imageDesc.isNonlinear());
//const bool outLuminance = !signatureState.hasColorTransform && imageDesc.isLuminance();
// Color transform will always result in RGB, regardless of input.
const bool outLuminance = (imageDesc.isLuminance() && !paintInRGB(signatureState)) && !signatureState.hasColorTransform;
if (!outLuminance && dstDesc.isLuminance())
{
// Convert to destination (luminance)
out.fullRGBToLuminance(!signatureState.hasColorTransform, imageDesc.isNonlinear(), true, dstDesc.isNonlinear());
}
else if (imageDesc.isNonlinear() != dstDesc.isNonlinear())
{
// Non-luminance gamma
if (!signatureState.hasColorTransform)
out.unpremultiply();
if (dstDesc.isNonlinear())
out.linearToGamma();
else
out.gammaToLinear();
out.premultiply();
}
else if (signatureState.hasColorTransform)
out.premultiply();
// Output dst and premultiplied.
}
else
{
RI_ASSERT(signatureState.imageMode == VG_DRAW_IMAGE_STENCIL);
IntegerColor alphas, pr;
if (signatureState.paintType == VG_PAINT_TYPE_PATTERN)
{
out = maybeColorTransform(signatureState, out, uniforms.colorTransformValues, patternDesc.isNonlinear());
const bool isLuminance = patternDesc.isLuminance() && !signatureState.hasColorTransform;
// If using pattern, convert to destination color-space
// \todo If not, handle this when the lookups are generated.
if (isLuminance != dstDesc.isLuminance())
{
out.fullRGBToLuminance(patternPremultipliedAfterSampling(signatureState) && !signatureState.hasColorTransform, patternDesc.isNonlinear(), true, dstDesc.isNonlinear());
}
else if (patternDesc.isNonlinear() != dstDesc.isNonlinear())
{
if (patternPremultipliedAfterSampling(signatureState) && !signatureState.hasColorTransform)
out.unpremultiply();
if (dstDesc.isNonlinear())
out.linearToGamma();
else
out.gammaToLinear();
out.premultiply();
} else if (signatureState.hasColorTransform || !patternPremultipliedAfterSampling(signatureState))
out.premultiply();
}
if (dstDesc.isLuminance() && !imageDesc.isLuminance())
{
// Convert image to luminance
imageColor.rgbToLuminance();
imageColor.r = imageColor.b = imageColor.b = RI_INT_MIN(imageColor.r, imageColor.a);
}
#if defined(RI_DEBUG) && 0
printf("stencil r: %d, g: %d, b: %d, a: %d\n",imageColor.r,imageColor.g,imageColor.b,imageColor.a);
printf("input r: %d, g: %d, b: %d, a: %d\n",out.r,out.g,out.b,out.a);
#endif
if (signatureState.paintType == VG_PAINT_TYPE_COLOR)
{
// Better precision for solid color input.
// Compute alpha channels
alphas.r = rMul(out.a, imageColor.r);
alphas.g = rMul(out.a, imageColor.g);
alphas.b = rMul(out.a, imageColor.b);
// Premultiply
pr.r = rMul(out.r, imageColor.r);
pr.g = rMul(out.g, imageColor.g);
pr.b = rMul(out.b, imageColor.b);
pr.a = rMul(out.a, imageColor.a);
}
else
{
// Compute alpha channels
alphas.r = cMul(out.a, imageColor.r);
alphas.g = cMul(out.a, imageColor.g);
alphas.b = cMul(out.a, imageColor.b);
// Premultiply
pr.r = cMul(out.r, imageColor.r);
pr.g = cMul(out.g, imageColor.g);
pr.b = cMul(out.b, imageColor.b);
pr.a = cMul(out.a, imageColor.a);
}
#if defined(RI_DEBUG) && 0
printf("alphas r: %d, g: %d, b: %d, a: %d\n",alphas.r,alphas.g,alphas.b,alphas.a);
printf("pr r: %d, g: %d, b: %d, a: %d\n",pr.r,pr.g,pr.b,pr.a);
#endif
out = pr;
imageColor = alphas;
}
}
}
if (signatureState.hasMasking)
{
// \todo Read and process only the proper component of the mask pixel.
const int maskBpp = signatureState.maskDesc.bitsPerPixel;
RIuint32 packedMaskColor = Image::readPackedPixelFromAddress(variants.maskPtr, maskBpp, variants.dstX);
IntegerColor maskColor;
maskColor.fromPackedMask(packedMaskColor, signatureState.maskDesc);
maskColor.expandMask(signatureState.maskDesc);
RIuint32 maskCoverage = maskColor.a + (maskColor.a >> 7);
coverage = (coverage * maskCoverage) >> 8;
variants.maskPtr = (void*)Image::incrementPointer(variants.maskPtr, maskBpp, variants.dstX);
}
#if defined(RI_DEBUG)
IntegerColor preblend = out;
#endif
// \todo Coverage check for pixelpipes != solid color with solid output colors?
IntegerColor d(0,0,0,0);
// All operations that depend on DST are done next. Keep it organized like that.
if ((coverage < ppMaxCoverage) || (out.a < 255) || alwaysLoadDst(signatureState))
{
d = IntegerColor(Image::readPackedPixelFromAddress(
variants.dst, dstDesc.bitsPerPixel, variants.dstX), dstDesc);
d.expandColor(dstDesc);
if (!dstDesc.isPremultiplied())
{
d.premultiply();
}
// Premultiply output
#if 0
if (!PixelPipe::isImageOnly(signatureState))
{
if (signatureState.paintType == VG_PAINT_TYPE_PATTERN && !patternPremultipliedAfterSampling(signatureState))
out.premultiply();
else if (signatureState.hasImage && !imagePremultipliedAfterSampling(signatureState))
out.premultiply();
}
#endif
if (!signatureState.isRenderToMask)
{
VGBlendMode bm = signatureState.blendMode;
// Currently SRC requires premultiplication even when only applying coverage.
//if (bm != VG_BLEND_SRC)
{
// If the src color has not been premultiplied before, now's the time.
// \todo Fast path for src alpha == 255 and SRC_OVER? Others?
if (preBlendPremultiplication(signatureState))
out.premultiply();
}
if (signatureState.hasImage && signatureState.imageMode == VG_DRAW_IMAGE_STENCIL)
{
out = blendIntegerStencil(out, imageColor, d, bm);
}
else
{
switch(bm)
{
case VG_BLEND_SRC_OVER:
out = srcOverCoverage(out, d, coverage);
break;
case VG_BLEND_SRC:
out = srcCoverage(out, d, coverage);
break;
default:
out = blendIntegerColors(out, d, bm);
out = srcCoverage(out, d, coverage);
break;
}
}
#if defined(RI_DEBUG)
if (dstDesc.isPremultiplied())
{
RI_ASSERT(out.r <= out.a);
RI_ASSERT(out.g <= out.a);
RI_ASSERT(out.b <= out.a);
}
#endif
}
else
{
// Mask operation
out = intMaskOperation(coverage, d, signatureState.maskOperation);
}
// out is always premultiplied at this point. Must be in destination color-space
if (!dstDesc.isPremultiplied())
{
// Unpremultiply if output is not premultiplied
out.unpremultiply();
}
}
else
{
// Unpremultiply, ...
if (!dstDesc.isPremultiplied())
out.unpremultiply();
}
// VG_SET_MASK does not require dst load:
if (signatureState.isRenderToMask && signatureState.maskOperation == VG_SET_MASK)
out = intMaskOperation(coverage, d, VG_SET_MASK);
out.truncateColor(dstDesc);
Image::writePackedPixelToAddress(
variants.dst, dstDesc.bitsPerPixel, variants.dstX, out.getPackedColor(dstDesc));
// \todo X for bpp < 8
variants.dst = (void*)Image::incrementPointer(variants.dst, dstDesc.bitsPerPixel, variants.dstX);
//variants.dst = colorBuffer->advancePointer(variants.dst);
variants.dstX++;
}
RI_INLINE static void fillSolidSpan(const PixelPipe::SignatureState& state, const PixelPipe::PPUniforms& uniforms, int startX, int y, int nPixels, RIuint32 packedColor)
{
Image::fillPackedPixels((void*)uniforms.dstPtr, state.dstDesc.bitsPerPixel, startX, y, uniforms.dstStride, nPixels, packedColor);
}
/**
* \brief This will calculate all the pixel-pipeline variants that need to be updated per-pixel.
* \note There may be a need for a different, faster function for image rendering, where
* there are faster methods of updating the variants.
*/
RI_INLINE static void prepareSpanVariants(const PixelPipe::SignatureState& state, const PixelPipe::PPUniforms& uniforms, const Span& span, PixelPipe::PPVariants& variants)
{
//variants.dst = uniforms.dst->calculateAddress(span.x0, span.y);
variants.dst = Image::calculateAddress(uniforms.dstPtr, state.dstDesc.bitsPerPixel, span.x0, span.y, uniforms.dstStride);
variants.dstX = span.x0;
variants.coverage = span.coverage;
if (state.paintType != VG_PAINT_TYPE_COLOR)
{
if (state.paintType == VG_PAINT_TYPE_LINEAR_GRADIENT)
{
// \todo Adjust pixel-center.
int x = uniforms.dgdx * span.x0 + uniforms.dgdy * span.y + uniforms.lgc;
variants.sx = x;
}
else if (state.paintType == VG_PAINT_TYPE_RADIAL_GRADIENT)
{
RGScalar x = uniforms.rdxdx * (RGScalar)span.x0 + uniforms.rdxdy * (RGScalar)span.y;
RGScalar y = uniforms.rdydy * (RGScalar)span.y + uniforms.rdydx * (RGScalar)span.x0;
variants.rx = x + uniforms.rx0;
variants.ry = y + uniforms.ry0;
}
else
{
RI_ASSERT(state.paintType == VG_PAINT_TYPE_PATTERN);
variants.sx = uniforms.paint_dxdx * span.x0 + uniforms.paint_dxdy * span.y + uniforms.paint_x0;
variants.sy = uniforms.paint_dydy * span.y + uniforms.paint_dydx * span.x0 + uniforms.paint_y0;
}
}
if (state.hasMasking)
{
variants.maskPtr = Image::calculateAddress(uniforms.maskPtr, state.maskDesc.bitsPerPixel, span.x0, span.y, uniforms.maskStride);
}
if (state.hasImage)
{
switch (state.imageGradientType)
{
case PixelPipe::GRADIENT_TYPE_INTEGER:
case PixelPipe::GRADIENT_TYPE_FIXED:
variants.iImageX = uniforms.image_ix0 + span.x0 * uniforms.image_idxdx + span.y * uniforms.image_idxdy;
variants.iImageY = uniforms.image_iy0 + span.y * uniforms.image_idydy + span.x0 * uniforms.image_idydx;
break;
default:
RI_ASSERT(state.imageGradientType == PixelPipe::GRADIENT_TYPE_FLOAT);
variants.fImageX = uniforms.image_fx0 + span.x0 * uniforms.image_fdxdx + span.y * uniforms.image_fdxdy;
variants.fImageY = uniforms.image_fy0 + span.y * uniforms.image_fdydy + span.x0 * uniforms.image_fdydx;
variants.fImageW = uniforms.image_fw0 + span.x0 * uniforms.image_fdwdx + span.y * uniforms.image_fdwdy;
break;
}
}
}
void executePixelPipeline(const PixelPipe::SignatureState& state, const PixelPipe::PPUniforms& uniforms, PixelPipe::PPVariants& variants, const Span* spans, int nSpans)
{
RI_ASSERT(nSpans > 0);
for (int i = 0; i < nSpans; i++)
{
const Span& s = spans[i];
if (s.coverage != Rasterizer::MAX_COVERAGE || !canSolidFill(state))
{
int n = s.len;
RI_ASSERT(n);
prepareSpanVariants(state, uniforms, s, variants);
do {
intPixelPipe(state, uniforms, variants);
} while (--n);
} else
{
fillSolidSpan(state, uniforms, s.x0, s.y, s.len, uniforms.packedSolidColor);
}
}
}
void calculatePPHash(PixelPipeHash& hash, const PixelPipe::SignatureState& derivedState)
{
const RIuint32 blendModeBits = 4;
const RIuint32 imageModeBits = 2;
const RIuint32 paintTypeBits = 2;
const RIuint32 tilingModeBits = 2;
const RIuint32 samplerBits = 1;
const RIuint32 imageGradientTypeBits = 2;
const RIuint32 boolBits = 1;
const RIuint32 descBits = 10;
const RIuint32 maskOperationBits = 3;
RIuint32 blendMode = ((RIuint32)derivedState.blendMode) - ((RIuint32)VG_BLEND_SRC);
RIuint32 imageMode = ((RIuint32)derivedState.imageMode) - ((RIuint32)VG_DRAW_IMAGE_NORMAL);
RIuint32 paintType = ((RIuint32)derivedState.paintType) - ((RIuint32)VG_PAINT_TYPE_COLOR);
RIuint32 maskOperation = ((RIuint32)derivedState.maskOperation) - ((RIuint32)VG_CLEAR_MASK);
RIuint32 paintTilingMode = ((RIuint32)derivedState.paintTilingMode);
RIuint32 paintSampler = ((RIuint32)derivedState.paintSampler);
RIuint32 imageSampler = ((RIuint32)derivedState.imageSampler);
RIuint32 imageGradientType = ((RIuint32)derivedState.imageGradientType);
RIuint32 dstFormat = (RIuint32)(derivedState.dstDesc.toIndex());
RIuint32 maskFormat = (RIuint32)(derivedState.maskDesc.toIndex());
RIuint32 imageFormat = (RIuint32)(derivedState.imageDesc.toIndex());
RIuint32 patternFormat = (RIuint32)(derivedState.patternDesc.toIndex());
RIuint32 hasMasking = derivedState.hasMasking ? 1 : 0;
RIuint32 hasImage = derivedState.hasImage ? 1 : 0;
RIuint32 hasColorTransform = derivedState.hasColorTransform ? 1 : 0;
RIuint32 isMaskOperation = derivedState.isRenderToMask ? 1 : 0;
RIuint32 fillColorTransparent = derivedState.fillColorTransparent ? 1 : 0;
RIuint32 unsafeImageInput = derivedState.unsafeImageInput ? 1 : 0;
// Modify hashes according to relevant state:
int b = 0;
b = riInsertBits32(hash.value, sizeof(hash.value), blendMode, blendModeBits, b);
b = riInsertBits32(hash.value, sizeof(hash.value), imageMode, imageModeBits, b);
b = riInsertBits32(hash.value, sizeof(hash.value), paintType, paintTypeBits, b);
b = riInsertBits32(hash.value, sizeof(hash.value), maskOperation, maskOperationBits, b);
b = riInsertBits32(hash.value, sizeof(hash.value), paintTilingMode, tilingModeBits, b);
b = riInsertBits32(hash.value, sizeof(hash.value), paintSampler, samplerBits, b);
b = riInsertBits32(hash.value, sizeof(hash.value), imageSampler, samplerBits, b);
b = riInsertBits32(hash.value, sizeof(hash.value), imageGradientType, imageGradientTypeBits, b);
b = riInsertBits32(hash.value, sizeof(hash.value), dstFormat, descBits, b);
b = riInsertBits32(hash.value, sizeof(hash.value), maskFormat, descBits, b);
b = riInsertBits32(hash.value, sizeof(hash.value), imageFormat, descBits, b);
b = riInsertBits32(hash.value, sizeof(hash.value), patternFormat, descBits, b);
b = riInsertBits32(hash.value, sizeof(hash.value), hasMasking, boolBits, b);
b = riInsertBits32(hash.value, sizeof(hash.value), hasImage, boolBits, b);
b = riInsertBits32(hash.value, sizeof(hash.value), hasColorTransform, boolBits, b);
b = riInsertBits32(hash.value, sizeof(hash.value), isMaskOperation, boolBits, b);
b = riInsertBits32(hash.value, sizeof(hash.value), fillColorTransparent, boolBits, b);
b = riInsertBits32(hash.value, sizeof(hash.value), unsafeImageInput, boolBits, b);
}
}