author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 01:47:50 +0200 | |
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permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2003 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of the License "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: VertexBuffer interface |
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* |
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*/ |
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#ifndef __M3G_VERTEXBUFFER_H__ |
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#define __M3G_VERTEXBUFFER_H__ |
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/*! |
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* \internal |
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* \file |
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* \brief VertexBuffer interface |
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*/ |
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#include "m3g_object.h" |
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#include "m3g_vertexarray.h" |
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/*! |
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* \internal |
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* \brief \c VertexBuffer object instance |
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*/ |
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struct M3GVertexBufferImpl |
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{ |
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Object object; |
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/*@dependent@*/ |
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VertexArray *colors; |
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/*@dependent@*/ |
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VertexArray *normals; |
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VertexArray *texCoords[M3G_NUM_TEXTURE_UNITS]; |
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/*@dependent@*/ |
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VertexArray *vertices; |
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GLfloat texCoordScale[M3G_NUM_TEXTURE_UNITS]; |
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GLfloat texCoordBias[M3G_NUM_TEXTURE_UNITS][3]; |
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GLfloat vertexScale; |
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GLfloat vertexBias[3]; |
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/*! \internal \brief Default vertex color */ |
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struct { GLubyte r, g, b, a; } defaultColor; |
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M3Gbool locked; |
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M3Gint vertexCount; |
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M3Gint arrayCount; |
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M3Gbitmask arrayMask; |
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M3Gint timestamp; |
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M3Gint verticesTimestamp; |
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AABB bbox; |
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}; |
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/*! \brief vertex component mask bits */ |
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#define M3G_POSITION_BIT 0x01u |
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#define M3G_COLOR_BIT 0x02u |
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#define M3G_NORMAL_BIT 0x04u |
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#define M3G_TEXCOORD0_BIT 0x10u |
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#define M3G_TEXCOORD1_BIT 0x20u |
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#define M3G_TEXCOORD2_BIT 0x40u |
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#define M3G_TEXCOORD3_BIT 0x80u |
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/*---------------------------------------------------------------------- |
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* Internal functions |
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*--------------------------------------------------------------------*/ |
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static void m3gApplyScaleAndBias(const VertexBuffer *buffer); |
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static void m3gLockVertexBuffer(const VertexBuffer *buffer, M3Gint alphaFactor); |
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static void m3gReleaseVertexBuffer(const VertexBuffer *buffer); |
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static M3Gbool m3gGetVertex(const VertexBuffer *buffer, M3Gint idx, Vec3 *v); |
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static M3Gbool m3gGetNormal(const VertexBuffer *buffer, M3Gint idx, Vec3 *v); |
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static M3Gbool m3gGetTexCoord(const VertexBuffer *buffer, M3Gint idx, int unit, Vec3 *v); |
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static M3Gint m3gGetTimestamp(const VertexBuffer *buffer); |
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static M3Gint m3gGetNumVertices(const VertexBuffer *buffer); |
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static M3Gbitmask m3gGetArrayMask(const VertexBuffer *buffer); |
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static M3Gbool m3gValidateVertexBuffer(const VertexBuffer *vb, |
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const Appearance *app, |
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M3Gsizei maxIndex); |
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static void m3gGetBoundingBox(VertexBuffer *buffer, AABB *boundingBox); |
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static M3Gbool m3gMakeModifiedVertexBuffer(VertexBuffer *buffer, |
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const VertexBuffer *srcBuffer, |
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M3Gbitmask arrayMask, |
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M3Gbool createArrays); |
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/* -------- Inline functions -------- */ |
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/*! |
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* \internal |
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* \brief Queries whether a vertex buffer can be (safely) bound with |
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* memory locking in effect |
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*/ |
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static M3G_INLINE M3Gbool m3gValidateAlphaCache(const VertexBuffer *buffer) |
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{ |
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const VertexArray *colArray = buffer->colors; |
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return colArray ? (colArray->cachedColors != 0) : M3G_TRUE; |
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} |
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/*! |
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* \internal |
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* \brief Type-safe helper function |
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*/ |
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static M3G_INLINE void m3gDeleteVertexBuffer(VertexBuffer *buffer) |
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{ |
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m3gDeleteObject((Object *) buffer); |
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} |
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/*! |
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* \internal |
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* \brief Gets number of vertices in this buffer. |
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*/ |
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static M3G_INLINE M3Gint m3gGetNumVertices(const VertexBuffer *buffer) |
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{ |
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return buffer->vertexCount; |
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} |
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/*! |
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* \internal |
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* \brief Returns the current array mask for this buffer |
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*/ |
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static M3G_INLINE M3Gbitmask m3gGetArrayMask(const VertexBuffer *buffer) |
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{ |
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return buffer->arrayMask; |
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} |
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#endif /*__M3G_VERTEXBUFFER_H__*/ |