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803 lines
26 KiB
C
803 lines
26 KiB
C
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/*
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* Mesa 3-D graphics library
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* Version: 7.7
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*
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* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
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* Copyright (c) 2008-2009 VMware, Inc.
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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 associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, 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 Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* \file texfetch_tmp.h
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* Texel fetch functions template.
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*
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* This template file is used by texfetch.c to generate texel fetch functions
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* for 1-D, 2-D and 3-D texture images.
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*
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* It should be expanded by defining \p DIM as the number texture dimensions
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* (1, 2 or 3). According to the value of \p DIM a series of macros is defined
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* for the texel lookup in the gl_texture_image::Data.
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*
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* \author Gareth Hughes
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* \author Brian Paul
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*/
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#if DIM == 1
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#define TEXEL_ADDR( type, image, i, j, k, size ) \
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((void) (j), (void) (k), ((type *)(image)->Map + (i) * (size)))
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#define FETCH(x) fetch_texel_1d_##x
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#elif DIM == 2
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#define TEXEL_ADDR( type, image, i, j, k, size ) \
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((void) (k), \
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((type *)(image)->Map + ((image)->RowStride * (j) + (i)) * (size)))
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#define FETCH(x) fetch_texel_2d_##x
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#elif DIM == 3
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#define TEXEL_ADDR( type, image, i, j, k, size ) \
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((type *)(image)->Map + ((image)->ImageOffsets[k] \
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+ (image)->RowStride * (j) + (i)) * (size))
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#define FETCH(x) fetch_texel_3d_##x
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#else
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#error illegal number of texture dimensions
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#endif
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/* MESA_FORMAT_Z32 ***********************************************************/
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/* Fetch depth texel from 1D, 2D or 3D 32-bit depth texture,
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* returning 1 GLfloat.
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* Note: no GLchan version of this function.
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*/
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static void FETCH(f_z32)( const struct swrast_texture_image *texImage,
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GLint i, GLint j, GLint k, GLfloat *texel )
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{
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const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
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texel[0] = src[0] * (1.0F / 0xffffffff);
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}
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/* MESA_FORMAT_Z16 ***********************************************************/
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/* Fetch depth texel from 1D, 2D or 3D 16-bit depth texture,
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* returning 1 GLfloat.
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* Note: no GLchan version of this function.
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*/
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static void FETCH(f_z16)(const struct swrast_texture_image *texImage,
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GLint i, GLint j, GLint k, GLfloat *texel )
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{
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const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
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texel[0] = src[0] * (1.0F / 65535.0F);
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}
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/*
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* Begin Hardware formats
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*/
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/* MESA_FORMAT_RGBA8888 ******************************************************/
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/* Fetch texel from 1D, 2D or 3D rgba8888 texture, return 4 GLfloats */
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static void FETCH(f_rgba8888)( const struct swrast_texture_image *texImage,
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GLint i, GLint j, GLint k, GLfloat *texel )
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{
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const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
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texel[RCOMP] = UBYTE_TO_FLOAT( (s >> 24) );
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texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
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texel[BCOMP] = UBYTE_TO_FLOAT( (s >> 8) & 0xff );
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texel[ACOMP] = UBYTE_TO_FLOAT( (s ) & 0xff );
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}
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/* MESA_FORMAT_RGBA888_REV ***************************************************/
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/* Fetch texel from 1D, 2D or 3D abgr8888 texture, return 4 GLchans */
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static void FETCH(f_rgba8888_rev)( const struct swrast_texture_image *texImage,
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GLint i, GLint j, GLint k, GLfloat *texel )
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{
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const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
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texel[RCOMP] = UBYTE_TO_FLOAT( (s ) & 0xff );
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texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 8) & 0xff );
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texel[BCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
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texel[ACOMP] = UBYTE_TO_FLOAT( (s >> 24) );
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}
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/* MESA_FORMAT_ARGB8888 ******************************************************/
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/* Fetch texel from 1D, 2D or 3D argb8888 texture, return 4 GLchans */
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static void FETCH(f_argb8888)( const struct swrast_texture_image *texImage,
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GLint i, GLint j, GLint k, GLfloat *texel )
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{
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const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
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texel[RCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
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texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 8) & 0xff );
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texel[BCOMP] = UBYTE_TO_FLOAT( (s ) & 0xff );
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texel[ACOMP] = UBYTE_TO_FLOAT( (s >> 24) );
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}
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/* MESA_FORMAT_ARGB8888_REV **************************************************/
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/* Fetch texel from 1D, 2D or 3D argb8888_rev texture, return 4 GLfloats */
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static void FETCH(f_argb8888_rev)( const struct swrast_texture_image *texImage,
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GLint i, GLint j, GLint k, GLfloat *texel )
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{
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const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
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texel[RCOMP] = UBYTE_TO_FLOAT( (s >> 8) & 0xff );
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texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
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texel[BCOMP] = UBYTE_TO_FLOAT( (s >> 24) );
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texel[ACOMP] = UBYTE_TO_FLOAT( (s ) & 0xff );
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}
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/* MESA_FORMAT_RGBX8888 ******************************************************/
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/* Fetch texel from 1D, 2D or 3D rgbx8888 texture, return 4 GLfloats */
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static void FETCH(f_rgbx8888)( const struct swrast_texture_image *texImage,
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GLint i, GLint j, GLint k, GLfloat *texel )
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{
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const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
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texel[RCOMP] = UBYTE_TO_FLOAT( (s >> 24) );
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texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
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texel[BCOMP] = UBYTE_TO_FLOAT( (s >> 8) & 0xff );
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texel[ACOMP] = 1.0f;
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}
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/* MESA_FORMAT_RGBX888_REV ***************************************************/
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/* Fetch texel from 1D, 2D or 3D rgbx8888_rev texture, return 4 GLchans */
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static void FETCH(f_rgbx8888_rev)( const struct swrast_texture_image *texImage,
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GLint i, GLint j, GLint k, GLfloat *texel )
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{
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const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
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texel[RCOMP] = UBYTE_TO_FLOAT( (s ) & 0xff );
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texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 8) & 0xff );
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texel[BCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
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texel[ACOMP] = 1.0f;
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}
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/* MESA_FORMAT_XRGB8888 ******************************************************/
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/* Fetch texel from 1D, 2D or 3D xrgb8888 texture, return 4 GLchans */
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static void FETCH(f_xrgb8888)( const struct swrast_texture_image *texImage,
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GLint i, GLint j, GLint k, GLfloat *texel )
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{
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const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
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texel[RCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
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texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 8) & 0xff );
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texel[BCOMP] = UBYTE_TO_FLOAT( (s ) & 0xff );
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texel[ACOMP] = 1.0f;
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}
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/* MESA_FORMAT_XRGB8888_REV **************************************************/
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/* Fetch texel from 1D, 2D or 3D xrgb8888_rev texture, return 4 GLfloats */
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static void FETCH(f_xrgb8888_rev)( const struct swrast_texture_image *texImage,
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GLint i, GLint j, GLint k, GLfloat *texel )
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{
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const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
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texel[RCOMP] = UBYTE_TO_FLOAT( (s >> 8) & 0xff );
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texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
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texel[BCOMP] = UBYTE_TO_FLOAT( (s >> 24) );
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texel[ACOMP] = 1.0f;
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}
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/* MESA_FORMAT_RGB888 ********************************************************/
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/* Fetch texel from 1D, 2D or 3D rgb888 texture, return 4 GLchans */
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static void FETCH(f_rgb888)( const struct swrast_texture_image *texImage,
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GLint i, GLint j, GLint k, GLfloat *texel )
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{
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const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3);
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texel[RCOMP] = UBYTE_TO_FLOAT( src[2] );
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texel[GCOMP] = UBYTE_TO_FLOAT( src[1] );
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texel[BCOMP] = UBYTE_TO_FLOAT( src[0] );
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texel[ACOMP] = 1.0F;
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}
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/* MESA_FORMAT_BGR888 ********************************************************/
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/* Fetch texel from 1D, 2D or 3D bgr888 texture, return 4 GLchans */
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static void FETCH(f_bgr888)( const struct swrast_texture_image *texImage,
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GLint i, GLint j, GLint k, GLfloat *texel )
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{
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const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3);
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texel[RCOMP] = UBYTE_TO_FLOAT( src[0] );
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texel[GCOMP] = UBYTE_TO_FLOAT( src[1] );
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texel[BCOMP] = UBYTE_TO_FLOAT( src[2] );
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texel[ACOMP] = 1.0F;
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}
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/* use color expansion like (g << 2) | (g >> 4) (does somewhat random rounding)
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instead of slow (g << 2) * 255 / 252 (always rounds down) */
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/* MESA_FORMAT_RGB565 ********************************************************/
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/* Fetch texel from 1D, 2D or 3D rgb565 texture, return 4 GLchans */
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static void FETCH(f_rgb565)( const struct swrast_texture_image *texImage,
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GLint i, GLint j, GLint k, GLfloat *texel )
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{
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const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
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const GLushort s = *src;
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texel[RCOMP] = ((s >> 11) & 0x1f) * (1.0F / 31.0F);
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texel[GCOMP] = ((s >> 5 ) & 0x3f) * (1.0F / 63.0F);
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texel[BCOMP] = ((s ) & 0x1f) * (1.0F / 31.0F);
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texel[ACOMP] = 1.0F;
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}
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/* MESA_FORMAT_RGB565_REV ****************************************************/
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/* Fetch texel from 1D, 2D or 3D rgb565_rev texture, return 4 GLchans */
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static void FETCH(f_rgb565_rev)( const struct swrast_texture_image *texImage,
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GLint i, GLint j, GLint k, GLfloat *texel )
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{
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const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
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const GLushort s = (*src >> 8) | (*src << 8); /* byte swap */
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texel[RCOMP] = UBYTE_TO_FLOAT( ((s >> 8) & 0xf8) | ((s >> 13) & 0x7) );
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texel[GCOMP] = UBYTE_TO_FLOAT( ((s >> 3) & 0xfc) | ((s >> 9) & 0x3) );
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texel[BCOMP] = UBYTE_TO_FLOAT( ((s << 3) & 0xf8) | ((s >> 2) & 0x7) );
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texel[ACOMP] = 1.0F;
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}
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/* MESA_FORMAT_ARGB4444 ******************************************************/
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/* Fetch texel from 1D, 2D or 3D argb444 texture, return 4 GLchans */
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static void FETCH(f_argb4444)( const struct swrast_texture_image *texImage,
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GLint i, GLint j, GLint k, GLfloat *texel )
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{
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const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
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const GLushort s = *src;
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texel[RCOMP] = ((s >> 8) & 0xf) * (1.0F / 15.0F);
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texel[GCOMP] = ((s >> 4) & 0xf) * (1.0F / 15.0F);
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texel[BCOMP] = ((s ) & 0xf) * (1.0F / 15.0F);
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texel[ACOMP] = ((s >> 12) & 0xf) * (1.0F / 15.0F);
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}
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/* MESA_FORMAT_ARGB4444_REV **************************************************/
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/* Fetch texel from 1D, 2D or 3D argb4444_rev texture, return 4 GLchans */
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static void FETCH(f_argb4444_rev)( const struct swrast_texture_image *texImage,
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GLint i, GLint j, GLint k, GLfloat *texel )
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{
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const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
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texel[RCOMP] = ((s ) & 0xf) * (1.0F / 15.0F);
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texel[GCOMP] = ((s >> 12) & 0xf) * (1.0F / 15.0F);
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texel[BCOMP] = ((s >> 8) & 0xf) * (1.0F / 15.0F);
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texel[ACOMP] = ((s >> 4) & 0xf) * (1.0F / 15.0F);
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}
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/* MESA_FORMAT_RGBA5551 ******************************************************/
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/* Fetch texel from 1D, 2D or 3D argb1555 texture, return 4 GLchans */
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static void FETCH(f_rgba5551)( const struct swrast_texture_image *texImage,
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GLint i, GLint j, GLint k, GLfloat *texel )
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{
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const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
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const GLushort s = *src;
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texel[RCOMP] = ((s >> 11) & 0x1f) * (1.0F / 31.0F);
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texel[GCOMP] = ((s >> 6) & 0x1f) * (1.0F / 31.0F);
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texel[BCOMP] = ((s >> 1) & 0x1f) * (1.0F / 31.0F);
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texel[ACOMP] = ((s ) & 0x01) * 1.0F;
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}
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/* MESA_FORMAT_ARGB1555 ******************************************************/
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/* Fetch texel from 1D, 2D or 3D argb1555 texture, return 4 GLchans */
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static void FETCH(f_argb1555)( const struct swrast_texture_image *texImage,
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GLint i, GLint j, GLint k, GLfloat *texel )
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{
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const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
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const GLushort s = *src;
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texel[RCOMP] = ((s >> 10) & 0x1f) * (1.0F / 31.0F);
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texel[GCOMP] = ((s >> 5) & 0x1f) * (1.0F / 31.0F);
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texel[BCOMP] = ((s >> 0) & 0x1f) * (1.0F / 31.0F);
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texel[ACOMP] = ((s >> 15) & 0x01) * 1.0F;
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_ARGB1555_REV **************************************************/
|
||
|
|
||
|
/* Fetch texel from 1D, 2D or 3D argb1555_rev texture, return 4 GLchans */
|
||
|
static void FETCH(f_argb1555_rev)( const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
|
||
|
const GLushort s = (*src << 8) | (*src >> 8); /* byteswap */
|
||
|
texel[RCOMP] = UBYTE_TO_FLOAT( ((s >> 7) & 0xf8) | ((s >> 12) & 0x7) );
|
||
|
texel[GCOMP] = UBYTE_TO_FLOAT( ((s >> 2) & 0xf8) | ((s >> 7) & 0x7) );
|
||
|
texel[BCOMP] = UBYTE_TO_FLOAT( ((s << 3) & 0xf8) | ((s >> 2) & 0x7) );
|
||
|
texel[ACOMP] = UBYTE_TO_FLOAT( ((s >> 15) & 0x01) * 255 );
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_AL44 **********************************************************/
|
||
|
|
||
|
/* Fetch texel from 1D, 2D or 3D al44 texture, return 4 GLchans */
|
||
|
static void FETCH(f_al44)( const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
const GLubyte s = *TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
|
||
|
texel[RCOMP] =
|
||
|
texel[GCOMP] =
|
||
|
texel[BCOMP] = (s & 0xf) * (1.0F / 15.0F);
|
||
|
texel[ACOMP] = ((s >> 4) & 0xf) * (1.0F / 15.0F);
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_AL88 **********************************************************/
|
||
|
|
||
|
/* Fetch texel from 1D, 2D or 3D al88 texture, return 4 GLchans */
|
||
|
static void FETCH(f_al88)( const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
|
||
|
texel[RCOMP] =
|
||
|
texel[GCOMP] =
|
||
|
texel[BCOMP] = UBYTE_TO_FLOAT( s & 0xff );
|
||
|
texel[ACOMP] = UBYTE_TO_FLOAT( s >> 8 );
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_AL88_REV ******************************************************/
|
||
|
|
||
|
/* Fetch texel from 1D, 2D or 3D al88_rev texture, return 4 GLchans */
|
||
|
static void FETCH(f_al88_rev)( const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
|
||
|
texel[RCOMP] =
|
||
|
texel[GCOMP] =
|
||
|
texel[BCOMP] = UBYTE_TO_FLOAT( s >> 8 );
|
||
|
texel[ACOMP] = UBYTE_TO_FLOAT( s & 0xff );
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_AL1616 ********************************************************/
|
||
|
|
||
|
/* Fetch texel from 1D, 2D or 3D al1616 texture, return 4 GLchans */
|
||
|
static void FETCH(f_al1616)( const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
|
||
|
texel[RCOMP] =
|
||
|
texel[GCOMP] =
|
||
|
texel[BCOMP] = USHORT_TO_FLOAT( s & 0xffff );
|
||
|
texel[ACOMP] = USHORT_TO_FLOAT( s >> 16 );
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_AL1616_REV ****************************************************/
|
||
|
|
||
|
/* Fetch texel from 1D, 2D or 3D al1616_rev texture, return 4 GLchans */
|
||
|
static void FETCH(f_al1616_rev)( const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
|
||
|
texel[RCOMP] =
|
||
|
texel[GCOMP] =
|
||
|
texel[BCOMP] = USHORT_TO_FLOAT( s >> 16 );
|
||
|
texel[ACOMP] = USHORT_TO_FLOAT( s & 0xffff );
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_RGB332 ********************************************************/
|
||
|
|
||
|
/* Fetch texel from 1D, 2D or 3D rgb332 texture, return 4 GLchans */
|
||
|
static void FETCH(f_rgb332)( const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
|
||
|
const GLubyte s = *src;
|
||
|
texel[RCOMP] = ((s >> 5) & 0x7) * (1.0F / 7.0F);
|
||
|
texel[GCOMP] = ((s >> 2) & 0x7) * (1.0F / 7.0F);
|
||
|
texel[BCOMP] = ((s ) & 0x3) * (1.0F / 3.0F);
|
||
|
texel[ACOMP] = 1.0F;
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_A8 ************************************************************/
|
||
|
|
||
|
/* Fetch texel from 1D, 2D or 3D a8 texture, return 4 GLchans */
|
||
|
static void FETCH(f_a8)( const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
|
||
|
texel[RCOMP] =
|
||
|
texel[GCOMP] =
|
||
|
texel[BCOMP] = 0.0F;
|
||
|
texel[ACOMP] = UBYTE_TO_FLOAT( src[0] );
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_A16 ************************************************************/
|
||
|
|
||
|
/* Fetch texel from 1D, 2D or 3D a8 texture, return 4 GLchans */
|
||
|
static void FETCH(f_a16)( const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
|
||
|
texel[RCOMP] =
|
||
|
texel[GCOMP] =
|
||
|
texel[BCOMP] = 0.0F;
|
||
|
texel[ACOMP] = USHORT_TO_FLOAT( src[0] );
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_L8 ************************************************************/
|
||
|
|
||
|
/* Fetch texel from 1D, 2D or 3D l8 texture, return 4 GLchans */
|
||
|
static void FETCH(f_l8)( const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
|
||
|
texel[RCOMP] =
|
||
|
texel[GCOMP] =
|
||
|
texel[BCOMP] = UBYTE_TO_FLOAT( src[0] );
|
||
|
texel[ACOMP] = 1.0F;
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_L16 ***********************************************************/
|
||
|
|
||
|
/* Fetch texel from 1D, 2D or 3D l16 texture, return 4 GLchans */
|
||
|
static void FETCH(f_l16)( const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
|
||
|
texel[RCOMP] =
|
||
|
texel[GCOMP] =
|
||
|
texel[BCOMP] = USHORT_TO_FLOAT( src[0] );
|
||
|
texel[ACOMP] = 1.0F;
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_I8 ************************************************************/
|
||
|
|
||
|
/* Fetch texel from 1D, 2D or 3D i8 texture, return 4 GLchans */
|
||
|
static void FETCH(f_i8)( const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
|
||
|
texel[RCOMP] =
|
||
|
texel[GCOMP] =
|
||
|
texel[BCOMP] =
|
||
|
texel[ACOMP] = UBYTE_TO_FLOAT( src[0] );
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_I16 ***********************************************************/
|
||
|
|
||
|
/* Fetch texel from 1D, 2D or 3D i16 texture, return 4 GLchans */
|
||
|
static void FETCH(f_i16)( const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
|
||
|
texel[RCOMP] =
|
||
|
texel[GCOMP] =
|
||
|
texel[BCOMP] =
|
||
|
texel[ACOMP] = USHORT_TO_FLOAT( src[0] );
|
||
|
}
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_RGBA_INT8 **************************************************/
|
||
|
|
||
|
static void
|
||
|
FETCH(rgba_int8)(const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
const GLbyte *src = TEXEL_ADDR(GLbyte, texImage, i, j, k, 4);
|
||
|
texel[RCOMP] = (GLfloat) src[0];
|
||
|
texel[GCOMP] = (GLfloat) src[1];
|
||
|
texel[BCOMP] = (GLfloat) src[2];
|
||
|
texel[ACOMP] = (GLfloat) src[3];
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_RGBA_INT16 **************************************************/
|
||
|
|
||
|
static void
|
||
|
FETCH(rgba_int16)(const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
const GLshort *src = TEXEL_ADDR(GLshort, texImage, i, j, k, 4);
|
||
|
texel[RCOMP] = (GLfloat) src[0];
|
||
|
texel[GCOMP] = (GLfloat) src[1];
|
||
|
texel[BCOMP] = (GLfloat) src[2];
|
||
|
texel[ACOMP] = (GLfloat) src[3];
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_RGBA_INT32 **************************************************/
|
||
|
|
||
|
static void
|
||
|
FETCH(rgba_int32)(const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
const GLint *src = TEXEL_ADDR(GLint, texImage, i, j, k, 4);
|
||
|
texel[RCOMP] = (GLfloat) src[0];
|
||
|
texel[GCOMP] = (GLfloat) src[1];
|
||
|
texel[BCOMP] = (GLfloat) src[2];
|
||
|
texel[ACOMP] = (GLfloat) src[3];
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_RGBA_UINT8 **************************************************/
|
||
|
|
||
|
static void
|
||
|
FETCH(rgba_uint8)(const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 4);
|
||
|
texel[RCOMP] = (GLfloat) src[0];
|
||
|
texel[GCOMP] = (GLfloat) src[1];
|
||
|
texel[BCOMP] = (GLfloat) src[2];
|
||
|
texel[ACOMP] = (GLfloat) src[3];
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_RGBA_UINT16 **************************************************/
|
||
|
|
||
|
static void
|
||
|
FETCH(rgba_uint16)(const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 4);
|
||
|
texel[RCOMP] = (GLfloat) src[0];
|
||
|
texel[GCOMP] = (GLfloat) src[1];
|
||
|
texel[BCOMP] = (GLfloat) src[2];
|
||
|
texel[ACOMP] = (GLfloat) src[3];
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_RGBA_UINT32 **************************************************/
|
||
|
|
||
|
static void
|
||
|
FETCH(rgba_uint32)(const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 4);
|
||
|
texel[RCOMP] = (GLfloat) src[0];
|
||
|
texel[GCOMP] = (GLfloat) src[1];
|
||
|
texel[BCOMP] = (GLfloat) src[2];
|
||
|
texel[ACOMP] = (GLfloat) src[3];
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_SIGNED_RGBA_16 ***********************************************/
|
||
|
|
||
|
static void
|
||
|
FETCH(signed_rgba_16)(const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel)
|
||
|
{
|
||
|
const GLshort *s = TEXEL_ADDR(GLshort, texImage, i, j, k, 4);
|
||
|
texel[RCOMP] = SHORT_TO_FLOAT_TEX( s[0] );
|
||
|
texel[GCOMP] = SHORT_TO_FLOAT_TEX( s[1] );
|
||
|
texel[BCOMP] = SHORT_TO_FLOAT_TEX( s[2] );
|
||
|
texel[ACOMP] = SHORT_TO_FLOAT_TEX( s[3] );
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_RGBA_16 ***********************************************/
|
||
|
|
||
|
static void
|
||
|
FETCH(rgba_16)(const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel)
|
||
|
{
|
||
|
const GLushort *s = TEXEL_ADDR(GLushort, texImage, i, j, k, 4);
|
||
|
texel[RCOMP] = USHORT_TO_FLOAT( s[0] );
|
||
|
texel[GCOMP] = USHORT_TO_FLOAT( s[1] );
|
||
|
texel[BCOMP] = USHORT_TO_FLOAT( s[2] );
|
||
|
texel[ACOMP] = USHORT_TO_FLOAT( s[3] );
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_YCBCR *********************************************************/
|
||
|
|
||
|
/* Fetch texel from 1D, 2D or 3D ycbcr texture, return 4 GLfloats.
|
||
|
* We convert YCbCr to RGB here.
|
||
|
*/
|
||
|
static void FETCH(f_ycbcr)( const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
const GLushort *src0 = TEXEL_ADDR(GLushort, texImage, (i & ~1), j, k, 1); /* even */
|
||
|
const GLushort *src1 = src0 + 1; /* odd */
|
||
|
const GLubyte y0 = (*src0 >> 8) & 0xff; /* luminance */
|
||
|
const GLubyte cb = *src0 & 0xff; /* chroma U */
|
||
|
const GLubyte y1 = (*src1 >> 8) & 0xff; /* luminance */
|
||
|
const GLubyte cr = *src1 & 0xff; /* chroma V */
|
||
|
const GLubyte y = (i & 1) ? y1 : y0; /* choose even/odd luminance */
|
||
|
GLfloat r = 1.164F * (y - 16) + 1.596F * (cr - 128);
|
||
|
GLfloat g = 1.164F * (y - 16) - 0.813F * (cr - 128) - 0.391F * (cb - 128);
|
||
|
GLfloat b = 1.164F * (y - 16) + 2.018F * (cb - 128);
|
||
|
r *= (1.0F / 255.0F);
|
||
|
g *= (1.0F / 255.0F);
|
||
|
b *= (1.0F / 255.0F);
|
||
|
texel[RCOMP] = CLAMP(r, 0.0F, 1.0F);
|
||
|
texel[GCOMP] = CLAMP(g, 0.0F, 1.0F);
|
||
|
texel[BCOMP] = CLAMP(b, 0.0F, 1.0F);
|
||
|
texel[ACOMP] = 1.0F;
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_FORMAT_YCBCR_REV *****************************************************/
|
||
|
|
||
|
/* Fetch texel from 1D, 2D or 3D ycbcr_rev texture, return 4 GLfloats.
|
||
|
* We convert YCbCr to RGB here.
|
||
|
*/
|
||
|
static void FETCH(f_ycbcr_rev)( const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
const GLushort *src0 = TEXEL_ADDR(GLushort, texImage, (i & ~1), j, k, 1); /* even */
|
||
|
const GLushort *src1 = src0 + 1; /* odd */
|
||
|
const GLubyte y0 = *src0 & 0xff; /* luminance */
|
||
|
const GLubyte cr = (*src0 >> 8) & 0xff; /* chroma V */
|
||
|
const GLubyte y1 = *src1 & 0xff; /* luminance */
|
||
|
const GLubyte cb = (*src1 >> 8) & 0xff; /* chroma U */
|
||
|
const GLubyte y = (i & 1) ? y1 : y0; /* choose even/odd luminance */
|
||
|
GLfloat r = 1.164F * (y - 16) + 1.596F * (cr - 128);
|
||
|
GLfloat g = 1.164F * (y - 16) - 0.813F * (cr - 128) - 0.391F * (cb - 128);
|
||
|
GLfloat b = 1.164F * (y - 16) + 2.018F * (cb - 128);
|
||
|
r *= (1.0F / 255.0F);
|
||
|
g *= (1.0F / 255.0F);
|
||
|
b *= (1.0F / 255.0F);
|
||
|
texel[RCOMP] = CLAMP(r, 0.0F, 1.0F);
|
||
|
texel[GCOMP] = CLAMP(g, 0.0F, 1.0F);
|
||
|
texel[BCOMP] = CLAMP(b, 0.0F, 1.0F);
|
||
|
texel[ACOMP] = 1.0F;
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_TEXFORMAT_Z24_S8 ***************************************************/
|
||
|
|
||
|
static void FETCH(f_z24_s8)( const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
/* only return Z, not stencil data */
|
||
|
const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
|
||
|
const GLdouble scale = 1.0 / (GLdouble) 0xffffff;
|
||
|
texel[0] = ((*src) >> 8) * scale;
|
||
|
ASSERT(texImage->Base.TexFormat == MESA_FORMAT_Z24_S8 ||
|
||
|
texImage->Base.TexFormat == MESA_FORMAT_Z24_X8);
|
||
|
ASSERT(texel[0] >= 0.0F);
|
||
|
ASSERT(texel[0] <= 1.0F);
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* MESA_TEXFORMAT_S8_Z24 ***************************************************/
|
||
|
|
||
|
static void FETCH(f_s8_z24)( const struct swrast_texture_image *texImage,
|
||
|
GLint i, GLint j, GLint k, GLfloat *texel )
|
||
|
{
|
||
|
/* only return Z, not stencil data */
|
||
|
const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
|
||
|
const GLdouble scale = 1.0 / (GLdouble) 0xffffff;
|
||
|
texel[0] = ((*src) & 0x00ffffff) * scale;
|
||
|
ASSERT(texImage->Base.TexFormat == MESA_FORMAT_S8_Z24 ||
|
||
|
texImage->Base.TexFormat == MESA_FORMAT_X8_Z24);
|
||
|
ASSERT(texel[0] >= 0.0F);
|
||
|
ASSERT(texel[0] <= 1.0F);
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
#undef TEXEL_ADDR
|
||
|
#undef DIM
|
||
|
#undef FETCH
|