| /* |
| * Mesa 3-D graphics library |
| * Version: 6.5.1 |
| * |
| * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is 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 Software. |
| * |
| * THE SOFTWARE IS 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 |
| * BRIAN PAUL 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 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| |
| |
| /** |
| * \file texformat_tmp.h |
| * Texel fetch functions template. |
| * |
| * This template file is used by texformat.c to generate texel fetch functions |
| * for 1-D, 2-D and 3-D texture images. |
| * |
| * It should be expanded by defining \p DIM as the number texture dimensions |
| * (1, 2 or 3). According to the value of \p DIM a series of macros is defined |
| * for the texel lookup in the gl_texture_image::Data. |
| * |
| * \sa texformat.c and FetchTexel. |
| * |
| * \author Gareth Hughes |
| * \author Brian Paul |
| */ |
| |
| |
| #if DIM == 1 |
| |
| #define TEXEL_ADDR( type, image, i, j, k, size ) \ |
| ((void) (j), (void) (k), ((type *)(image)->Data + (i) * (size))) |
| |
| #define FETCH(x) fetch_texel_1d_##x |
| |
| #elif DIM == 2 |
| |
| #define TEXEL_ADDR( type, image, i, j, k, size ) \ |
| ((void) (k), \ |
| ((type *)(image)->Data + ((image)->RowStride * (j) + (i)) * (size))) |
| |
| #define FETCH(x) fetch_texel_2d_##x |
| |
| #elif DIM == 3 |
| |
| #define TEXEL_ADDR( type, image, i, j, k, size ) \ |
| ((type *)(image)->Data + ((image)->ImageOffsets[k] \ |
| + (image)->RowStride * (j) + (i)) * (size)) |
| |
| #define FETCH(x) fetch_texel_3d_##x |
| |
| #else |
| #error illegal number of texture dimensions |
| #endif |
| |
| |
| /* MESA_FORMAT_RGBA **********************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D RGBA texture, returning 4 GLchans */ |
| static void FETCH(rgba)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLchan *src = TEXEL_ADDR(GLchan, texImage, i, j, k, 4); |
| COPY_CHAN4( texel, src ); |
| } |
| |
| /* Fetch texel from 1D, 2D or 3D RGBA texture, returning 4 GLfloats */ |
| static void FETCH(f_rgba)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLfloat *texel ) |
| { |
| const GLchan *src = TEXEL_ADDR(GLchan, texImage, i, j, k, 4); |
| texel[RCOMP] = CHAN_TO_FLOAT(src[0]); |
| texel[GCOMP] = CHAN_TO_FLOAT(src[1]); |
| texel[BCOMP] = CHAN_TO_FLOAT(src[2]); |
| texel[ACOMP] = CHAN_TO_FLOAT(src[3]); |
| } |
| |
| #if DIM == 3 |
| /* Store a GLchan RGBA texel */ |
| static void store_texel_rgba(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLchan *rgba = (const GLchan *) texel; |
| GLchan *dst = TEXEL_ADDR(GLchan, texImage, i, j, k, 4); |
| dst[0] = rgba[RCOMP]; |
| dst[1] = rgba[GCOMP]; |
| dst[2] = rgba[BCOMP]; |
| dst[3] = rgba[ACOMP]; |
| } |
| #endif |
| |
| /* MESA_FORMAT_RGB ***********************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D RGB texture, returning 4 GLchans */ |
| static void FETCH(rgb)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLchan *src = TEXEL_ADDR(GLchan, texImage, i, j, k, 3); |
| texel[RCOMP] = src[0]; |
| texel[GCOMP] = src[1]; |
| texel[BCOMP] = src[2]; |
| texel[ACOMP] = CHAN_MAX; |
| } |
| |
| /* Fetch texel from 1D, 2D or 3D RGB texture, returning 4 GLfloats */ |
| static void FETCH(f_rgb)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLfloat *texel ) |
| { |
| const GLchan *src = TEXEL_ADDR(GLchan, texImage, i, j, k, 3); |
| texel[RCOMP] = CHAN_TO_FLOAT(src[0]); |
| texel[GCOMP] = CHAN_TO_FLOAT(src[1]); |
| texel[BCOMP] = CHAN_TO_FLOAT(src[2]); |
| texel[ACOMP] = 1.0F; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_rgb(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLchan *rgba = (const GLchan *) texel; |
| GLchan *dst = TEXEL_ADDR(GLchan, texImage, i, j, k, 3); |
| dst[0] = rgba[RCOMP]; |
| dst[1] = rgba[GCOMP]; |
| dst[2] = rgba[BCOMP]; |
| } |
| #endif |
| |
| /* MESA_FORMAT_ALPHA *********************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D ALPHA texture, returning 4 GLchans */ |
| static void FETCH(alpha)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLchan *src = TEXEL_ADDR(GLchan, texImage, i, j, k, 1); |
| texel[RCOMP] = |
| texel[GCOMP] = |
| texel[BCOMP] = 0; |
| texel[ACOMP] = src[0]; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_alpha(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLchan *rgba = (const GLchan *) texel; |
| GLchan *dst = TEXEL_ADDR(GLchan, texImage, i, j, k, 1); |
| dst[0] = rgba[ACOMP]; |
| } |
| #endif |
| |
| /* MESA_FORMAT_LUMINANCE *****************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D LUMIN texture, returning 4 GLchans */ |
| static void FETCH(luminance)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLchan *src = TEXEL_ADDR(GLchan, texImage, i, j, k, 1); |
| texel[RCOMP] = |
| texel[GCOMP] = |
| texel[BCOMP] = src[0]; |
| texel[ACOMP] = CHAN_MAX; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_luminance(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLchan *rgba = (const GLchan *) texel; |
| GLchan *dst = TEXEL_ADDR(GLchan, texImage, i, j, k, 1); |
| dst[0] = rgba[RCOMP]; |
| } |
| #endif |
| |
| /* MESA_FORMAT_LUMINANCE_ALPHA ***********************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D L_A texture, returning 4 GLchans */ |
| static void FETCH(luminance_alpha)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLchan *src = TEXEL_ADDR(GLchan, texImage, i, j, k, 2); |
| texel[RCOMP] = src[0]; |
| texel[GCOMP] = src[0]; |
| texel[BCOMP] = src[0]; |
| texel[ACOMP] = src[1]; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_luminance_alpha(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLchan *rgba = (const GLchan *) texel; |
| GLchan *dst = TEXEL_ADDR(GLchan, texImage, i, j, k, 2); |
| dst[0] = rgba[RCOMP]; |
| dst[1] = rgba[ACOMP]; |
| } |
| #endif |
| |
| /* MESA_FORMAT_INTENSITY *****************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D INT. texture, returning 4 GLchans */ |
| static void FETCH(intensity)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLchan *src = TEXEL_ADDR(GLchan, texImage, i, j, k, 1); |
| texel[RCOMP] = src[0]; |
| texel[GCOMP] = src[0]; |
| texel[BCOMP] = src[0]; |
| texel[ACOMP] = src[0]; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_intensity(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLchan *rgba = (const GLchan *) texel; |
| GLchan *dst = TEXEL_ADDR(GLchan, texImage, i, j, k, 1); |
| dst[0] = rgba[RCOMP]; |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_Z32 ***********************************************************/ |
| |
| /* Fetch depth texel from 1D, 2D or 3D 32-bit depth texture, |
| * returning 1 GLfloat. |
| * Note: no GLchan version of this function. |
| */ |
| static void FETCH(f_z32)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLfloat *texel ) |
| { |
| const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1); |
| texel[0] = src[0] * (1.0F / 0xffffffff); |
| } |
| |
| #if DIM == 3 |
| static void store_texel_z32(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLuint *depth = (const GLuint *) texel; |
| GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1); |
| dst[0] = *depth; |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_Z16 ***********************************************************/ |
| |
| /* Fetch depth texel from 1D, 2D or 3D 16-bit depth texture, |
| * returning 1 GLfloat. |
| * Note: no GLchan version of this function. |
| */ |
| static void FETCH(f_z16)(const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLfloat *texel ) |
| { |
| const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1); |
| texel[0] = src[0] * (1.0F / 65535.0F); |
| } |
| |
| #if DIM == 3 |
| static void store_texel_z16(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLushort *depth = (const GLushort *) texel; |
| GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1); |
| dst[0] = *depth; |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_RGBA_F32 ******************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D RGBA_FLOAT32 texture, returning 4 GLfloats. |
| */ |
| static void FETCH(f_rgba_f32)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLfloat *texel ) |
| { |
| const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 4); |
| texel[RCOMP] = src[0]; |
| texel[GCOMP] = src[1]; |
| texel[BCOMP] = src[2]; |
| texel[ACOMP] = src[3]; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_rgba_f32(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLfloat *depth = (const GLfloat *) texel; |
| GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1); |
| dst[0] = depth[RCOMP]; |
| dst[1] = depth[GCOMP]; |
| dst[2] = depth[BCOMP]; |
| dst[3] = depth[ACOMP]; |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_RGBA_F16 ******************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D RGBA_FLOAT16 texture, |
| * returning 4 GLfloats. |
| */ |
| static void FETCH(f_rgba_f16)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLfloat *texel ) |
| { |
| const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 4); |
| texel[RCOMP] = _mesa_half_to_float(src[0]); |
| texel[GCOMP] = _mesa_half_to_float(src[1]); |
| texel[BCOMP] = _mesa_half_to_float(src[2]); |
| texel[ACOMP] = _mesa_half_to_float(src[3]); |
| } |
| |
| #if DIM == 3 |
| static void store_texel_rgba_f16(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLfloat *depth = (const GLfloat *) texel; |
| GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1); |
| dst[0] = _mesa_float_to_half(*depth); |
| } |
| #endif |
| |
| /* MESA_FORMAT_RGB_F32 *******************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D RGB_FLOAT32 texture, |
| * returning 4 GLfloats. |
| */ |
| static void FETCH(f_rgb_f32)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLfloat *texel ) |
| { |
| const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 3); |
| texel[RCOMP] = src[0]; |
| texel[GCOMP] = src[1]; |
| texel[BCOMP] = src[2]; |
| texel[ACOMP] = 1.0F; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_rgb_f32(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLfloat *depth = (const GLfloat *) texel; |
| GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1); |
| dst[0] = *depth; |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_RGB_F16 *******************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D RGB_FLOAT16 texture, |
| * returning 4 GLfloats. |
| */ |
| static void FETCH(f_rgb_f16)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLfloat *texel ) |
| { |
| const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 3); |
| texel[RCOMP] = _mesa_half_to_float(src[0]); |
| texel[GCOMP] = _mesa_half_to_float(src[1]); |
| texel[BCOMP] = _mesa_half_to_float(src[2]); |
| texel[ACOMP] = 1.0F; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_rgb_f16(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLfloat *depth = (const GLfloat *) texel; |
| GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1); |
| dst[0] = _mesa_float_to_half(*depth); |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_ALPHA_F32 *****************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D ALPHA_FLOAT32 texture, |
| * returning 4 GLfloats. |
| */ |
| static void FETCH(f_alpha_f32)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLfloat *texel ) |
| { |
| const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1); |
| texel[RCOMP] = |
| texel[GCOMP] = |
| texel[BCOMP] = 0.0F; |
| texel[ACOMP] = src[0]; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_alpha_f32(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLfloat *rgba = (const GLfloat *) texel; |
| GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1); |
| dst[0] = rgba[ACOMP]; |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_ALPHA_F32 *****************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D ALPHA_FLOAT16 texture, |
| * returning 4 GLfloats. |
| */ |
| static void FETCH(f_alpha_f16)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLfloat *texel ) |
| { |
| const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1); |
| texel[RCOMP] = |
| texel[GCOMP] = |
| texel[BCOMP] = 0.0F; |
| texel[ACOMP] = _mesa_half_to_float(src[0]); |
| } |
| |
| #if DIM == 3 |
| static void store_texel_alpha_f16(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLfloat *rgba = (const GLfloat *) texel; |
| GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1); |
| dst[0] = _mesa_float_to_half(rgba[ACOMP]); |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_LUMINANCE_F32 *************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D LUMINANCE_FLOAT32 texture, |
| * returning 4 GLfloats. |
| */ |
| static void FETCH(f_luminance_f32)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLfloat *texel ) |
| { |
| const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1); |
| texel[RCOMP] = |
| texel[GCOMP] = |
| texel[BCOMP] = src[0]; |
| texel[ACOMP] = 1.0F; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_luminance_f32(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLfloat *rgba = (const GLfloat *) texel; |
| GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1); |
| dst[0] = rgba[RCOMP]; |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_LUMINANCE_F16 *************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D LUMINANCE_FLOAT16 texture, |
| * returning 4 GLfloats. |
| */ |
| static void FETCH(f_luminance_f16)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLfloat *texel ) |
| { |
| const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1); |
| texel[RCOMP] = |
| texel[GCOMP] = |
| texel[BCOMP] = _mesa_half_to_float(src[0]); |
| texel[ACOMP] = 1.0F; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_luminance_f16(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLfloat *rgba = (const GLfloat *) texel; |
| GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1); |
| dst[0] = _mesa_float_to_half(rgba[RCOMP]); |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_LUMINANCE_ALPHA_F32 *******************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D LUMINANCE_ALPHA_FLOAT32 texture, |
| * returning 4 GLfloats. |
| */ |
| static void FETCH(f_luminance_alpha_f32)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLfloat *texel ) |
| { |
| const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2); |
| texel[RCOMP] = |
| texel[GCOMP] = |
| texel[BCOMP] = src[0]; |
| texel[ACOMP] = src[1]; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_luminance_alpha_f32(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLfloat *rgba = (const GLfloat *) texel; |
| GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2); |
| dst[0] = rgba[RCOMP]; |
| dst[1] = rgba[ACOMP]; |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_LUMINANCE_ALPHA_F16 *******************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D LUMINANCE_ALPHA_FLOAT16 texture, |
| * returning 4 GLfloats. |
| */ |
| static void FETCH(f_luminance_alpha_f16)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLfloat *texel ) |
| { |
| const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 2); |
| texel[RCOMP] = |
| texel[GCOMP] = |
| texel[BCOMP] = _mesa_half_to_float(src[0]); |
| texel[ACOMP] = _mesa_half_to_float(src[1]); |
| } |
| |
| #if DIM == 3 |
| static void store_texel_luminance_alpha_f16(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLfloat *rgba = (const GLfloat *) texel; |
| GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 2); |
| dst[0] = _mesa_float_to_half(rgba[RCOMP]); |
| dst[1] = _mesa_float_to_half(rgba[ACOMP]); |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_INTENSITY_F32 *************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D INTENSITY_FLOAT32 texture, |
| * returning 4 GLfloats. |
| */ |
| static void FETCH(f_intensity_f32)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLfloat *texel ) |
| { |
| const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1); |
| texel[RCOMP] = |
| texel[GCOMP] = |
| texel[BCOMP] = |
| texel[ACOMP] = src[0]; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_intensity_f32(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLfloat *rgba = (const GLfloat *) texel; |
| GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1); |
| dst[0] = rgba[RCOMP]; |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_INTENSITY_F16 *************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D INTENSITY_FLOAT16 texture, |
| * returning 4 GLfloats. |
| */ |
| static void FETCH(f_intensity_f16)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLfloat *texel ) |
| { |
| const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1); |
| texel[RCOMP] = |
| texel[GCOMP] = |
| texel[BCOMP] = |
| texel[ACOMP] = _mesa_half_to_float(src[0]); |
| } |
| |
| #if DIM == 3 |
| static void store_texel_intensity_f16(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLfloat *rgba = (const GLfloat *) texel; |
| GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1); |
| dst[0] = _mesa_float_to_half(rgba[RCOMP]); |
| } |
| #endif |
| |
| |
| |
| |
| /* |
| * Begin Hardware formats |
| */ |
| |
| /* MESA_FORMAT_RGBA8888 ******************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D rgba8888 texture, return 4 GLchans */ |
| static void FETCH(rgba8888)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1); |
| texel[RCOMP] = UBYTE_TO_CHAN( (s >> 24) ); |
| texel[GCOMP] = UBYTE_TO_CHAN( (s >> 16) & 0xff ); |
| texel[BCOMP] = UBYTE_TO_CHAN( (s >> 8) & 0xff ); |
| texel[ACOMP] = UBYTE_TO_CHAN( (s ) & 0xff ); |
| } |
| |
| #if DIM == 3 |
| static void store_texel_rgba8888(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *rgba = (const GLubyte *) texel; |
| GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1); |
| *dst = PACK_COLOR_8888(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], rgba[ACOMP]); |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_RGBA888_REV ***************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D abgr8888 texture, return 4 GLchans */ |
| static void FETCH(rgba8888_rev)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1); |
| texel[RCOMP] = UBYTE_TO_CHAN( (s ) & 0xff ); |
| texel[GCOMP] = UBYTE_TO_CHAN( (s >> 8) & 0xff ); |
| texel[BCOMP] = UBYTE_TO_CHAN( (s >> 16) & 0xff ); |
| texel[ACOMP] = UBYTE_TO_CHAN( (s >> 24) ); |
| } |
| |
| #if DIM == 3 |
| static void store_texel_rgba8888_rev(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *rgba = (const GLubyte *) texel; |
| GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1); |
| *dst = PACK_COLOR_8888_REV(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], rgba[ACOMP]); |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_ARGB8888 ******************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D argb8888 texture, return 4 GLchans */ |
| static void FETCH(argb8888)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1); |
| texel[RCOMP] = UBYTE_TO_CHAN( (s >> 16) & 0xff ); |
| texel[GCOMP] = UBYTE_TO_CHAN( (s >> 8) & 0xff ); |
| texel[BCOMP] = UBYTE_TO_CHAN( (s ) & 0xff ); |
| texel[ACOMP] = UBYTE_TO_CHAN( (s >> 24) ); |
| } |
| |
| #if DIM == 3 |
| static void store_texel_argb8888(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *rgba = (const GLubyte *) texel; |
| GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1); |
| *dst = PACK_COLOR_8888(rgba[ACOMP], rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]); |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_ARGB8888_REV **************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D argb8888_rev texture, return 4 GLchans */ |
| static void FETCH(argb8888_rev)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1); |
| texel[RCOMP] = UBYTE_TO_CHAN( (s >> 8) & 0xff ); |
| texel[GCOMP] = UBYTE_TO_CHAN( (s >> 16) & 0xff ); |
| texel[BCOMP] = UBYTE_TO_CHAN( (s >> 24) ); |
| texel[ACOMP] = UBYTE_TO_CHAN( (s ) & 0xff ); |
| } |
| |
| #if DIM == 3 |
| static void store_texel_argb8888_rev(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *rgba = (const GLubyte *) texel; |
| GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1); |
| *dst = PACK_COLOR_8888(rgba[ACOMP], rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]); |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_RGB888 ********************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D rgb888 texture, return 4 GLchans */ |
| static void FETCH(rgb888)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3); |
| texel[RCOMP] = UBYTE_TO_CHAN( src[2] ); |
| texel[GCOMP] = UBYTE_TO_CHAN( src[1] ); |
| texel[BCOMP] = UBYTE_TO_CHAN( src[0] ); |
| texel[ACOMP] = CHAN_MAX; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_rgb888(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *rgba = (const GLubyte *) texel; |
| GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3); |
| dst[0] = rgba[RCOMP]; |
| dst[1] = rgba[GCOMP]; |
| dst[2] = rgba[BCOMP]; |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_BGR888 ********************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D bgr888 texture, return 4 GLchans */ |
| static void FETCH(bgr888)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3); |
| texel[RCOMP] = UBYTE_TO_CHAN( src[0] ); |
| texel[GCOMP] = UBYTE_TO_CHAN( src[1] ); |
| texel[BCOMP] = UBYTE_TO_CHAN( src[2] ); |
| texel[ACOMP] = CHAN_MAX; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_bgr888(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *rgba = (const GLubyte *) texel; |
| GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3); |
| dst[0] = rgba[BCOMP]; |
| dst[1] = rgba[GCOMP]; |
| dst[2] = rgba[RCOMP]; |
| } |
| #endif |
| |
| |
| /* use color expansion like (g << 2) | (g >> 4) (does somewhat random rounding) |
| instead of slow (g << 2) * 255 / 252 (always rounds down) */ |
| |
| /* MESA_FORMAT_RGB565 ********************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D rgb565 texture, return 4 GLchans */ |
| static void FETCH(rgb565)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1); |
| const GLushort s = *src; |
| texel[RCOMP] = UBYTE_TO_CHAN( ((s >> 8) & 0xf8) | ((s >> 13) & 0x7) ); |
| texel[GCOMP] = UBYTE_TO_CHAN( ((s >> 3) & 0xfc) | ((s >> 9) & 0x3) ); |
| texel[BCOMP] = UBYTE_TO_CHAN( ((s << 3) & 0xf8) | ((s >> 2) & 0x7) ); |
| texel[ACOMP] = CHAN_MAX; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_rgb565(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *rgba = (const GLubyte *) texel; |
| GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1); |
| *dst = PACK_COLOR_565(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]); |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_RGB565_REV ****************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D rgb565_rev texture, return 4 GLchans */ |
| static void FETCH(rgb565_rev)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1); |
| const GLushort s = (*src >> 8) | (*src << 8); /* byte swap */ |
| texel[RCOMP] = UBYTE_TO_CHAN( ((s >> 8) & 0xf8) | ((s >> 13) & 0x7) ); |
| texel[GCOMP] = UBYTE_TO_CHAN( ((s >> 3) & 0xfc) | ((s >> 9) & 0x3) ); |
| texel[BCOMP] = UBYTE_TO_CHAN( ((s << 3) & 0xf8) | ((s >> 2) & 0x7) ); |
| texel[ACOMP] = CHAN_MAX; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_rgb565_rev(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *rgba = (const GLubyte *) texel; |
| GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1); |
| *dst = PACK_COLOR_565(rgba[BCOMP], rgba[GCOMP], rgba[RCOMP]); |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_ARGB4444 ******************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D argb444 texture, return 4 GLchans */ |
| static void FETCH(argb4444)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1); |
| const GLushort s = *src; |
| texel[RCOMP] = UBYTE_TO_CHAN( ((s >> 8) & 0xf) | ((s >> 4) & 0xf0) ); |
| texel[GCOMP] = UBYTE_TO_CHAN( ((s >> 4) & 0xf) | ((s ) & 0xf0) ); |
| texel[BCOMP] = UBYTE_TO_CHAN( ((s ) & 0xf) | ((s << 4) & 0xf0) ); |
| texel[ACOMP] = UBYTE_TO_CHAN( ((s >> 12) & 0xf) | ((s >> 8) & 0xf0) ); |
| } |
| |
| #if DIM == 3 |
| static void store_texel_argb4444(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *rgba = (const GLubyte *) texel; |
| GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1); |
| *dst = PACK_COLOR_4444(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], rgba[ACOMP]); |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_ARGB4444_REV **************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D argb4444_rev texture, return 4 GLchans */ |
| static void FETCH(argb4444_rev)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1); |
| texel[RCOMP] = UBYTE_TO_CHAN( ((s ) & 0xf) | ((s << 4) & 0xf0) ); |
| texel[GCOMP] = UBYTE_TO_CHAN( ((s >> 12) & 0xf) | ((s >> 8) & 0xf0) ); |
| texel[BCOMP] = UBYTE_TO_CHAN( ((s >> 8) & 0xf) | ((s >> 4) & 0xf0) ); |
| texel[ACOMP] = UBYTE_TO_CHAN( ((s >> 4) & 0xf) | ((s ) & 0xf0) ); |
| } |
| |
| #if DIM == 3 |
| static void store_texel_argb4444_rev(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *rgba = (const GLubyte *) texel; |
| GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1); |
| *dst = PACK_COLOR_4444(rgba[ACOMP], rgba[BCOMP], rgba[GCOMP], rgba[RCOMP]); |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_ARGB1555 ******************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D argb1555 texture, return 4 GLchans */ |
| static void FETCH(argb1555)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1); |
| const GLushort s = *src; |
| texel[RCOMP] = UBYTE_TO_CHAN( ((s >> 7) & 0xf8) | ((s >> 12) & 0x7) ); |
| texel[GCOMP] = UBYTE_TO_CHAN( ((s >> 2) & 0xf8) | ((s >> 7) & 0x7) ); |
| texel[BCOMP] = UBYTE_TO_CHAN( ((s << 3) & 0xf8) | ((s >> 2) & 0x7) ); |
| texel[ACOMP] = UBYTE_TO_CHAN( ((s >> 15) & 0x01) * 255 ); |
| } |
| |
| #if DIM == 3 |
| static void store_texel_argb1555(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *rgba = (const GLubyte *) texel; |
| GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1); |
| *dst = PACK_COLOR_1555(rgba[ACOMP], rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]); |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_ARGB1555_REV **************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D argb1555_rev texture, return 4 GLchans */ |
| static void FETCH(argb1555_rev)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1); |
| const GLushort s = (*src << 8) | (*src >> 8); /* byteswap */ |
| texel[RCOMP] = UBYTE_TO_CHAN( ((s >> 7) & 0xf8) | ((s >> 12) & 0x7) ); |
| texel[GCOMP] = UBYTE_TO_CHAN( ((s >> 2) & 0xf8) | ((s >> 7) & 0x7) ); |
| texel[BCOMP] = UBYTE_TO_CHAN( ((s << 3) & 0xf8) | ((s >> 2) & 0x7) ); |
| texel[ACOMP] = UBYTE_TO_CHAN( ((s >> 15) & 0x01) * 255 ); |
| } |
| |
| #if DIM == 3 |
| static void store_texel_argb1555_rev(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *rgba = (const GLubyte *) texel; |
| GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1); |
| *dst = PACK_COLOR_1555_REV(rgba[ACOMP], rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]); |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_AL88 **********************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D al88 texture, return 4 GLchans */ |
| static void FETCH(al88)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1); |
| texel[RCOMP] = |
| texel[GCOMP] = |
| texel[BCOMP] = UBYTE_TO_CHAN( s & 0xff ); |
| texel[ACOMP] = UBYTE_TO_CHAN( s >> 8 ); |
| } |
| |
| #if DIM == 3 |
| static void store_texel_al88(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *rgba = (const GLubyte *) texel; |
| GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1); |
| *dst = PACK_COLOR_88(rgba[ACOMP], rgba[RCOMP]); |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_AL88_REV ******************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D al88_rev texture, return 4 GLchans */ |
| static void FETCH(al88_rev)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1); |
| texel[RCOMP] = |
| texel[GCOMP] = |
| texel[BCOMP] = UBYTE_TO_CHAN( s >> 8 ); |
| texel[ACOMP] = UBYTE_TO_CHAN( s & 0xff ); |
| } |
| |
| #if DIM == 3 |
| static void store_texel_al88_rev(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *rgba = (const GLubyte *) texel; |
| GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1); |
| *dst = PACK_COLOR_88(rgba[RCOMP], rgba[ACOMP]); |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_RGB332 ********************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D rgb332 texture, return 4 GLchans */ |
| static void FETCH(rgb332)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| static const GLubyte lut2to8[4] = {0, 85, 170, 255}; |
| static const GLubyte lut3to8[8] = {0, 36, 73, 109, 146, 182, 219, 255}; |
| const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1); |
| const GLubyte s = *src; |
| texel[RCOMP] = UBYTE_TO_CHAN( lut3to8[(s >> 5) & 0x7] ); |
| texel[GCOMP] = UBYTE_TO_CHAN( lut3to8[(s >> 2) & 0x7] ); |
| texel[BCOMP] = UBYTE_TO_CHAN( lut2to8[(s ) & 0x3] ); |
| texel[ACOMP] = CHAN_MAX; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_rgb332(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *rgba = (const GLubyte *) texel; |
| GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1); |
| *dst = PACK_COLOR_332(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]); |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_A8 ************************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D a8 texture, return 4 GLchans */ |
| static void FETCH(a8)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1); |
| texel[RCOMP] = |
| texel[GCOMP] = |
| texel[BCOMP] = 0; |
| texel[ACOMP] = UBYTE_TO_CHAN( src[0] ); |
| } |
| |
| #if DIM == 3 |
| static void store_texel_a8(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *rgba = (const GLubyte *) texel; |
| GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1); |
| *dst = rgba[ACOMP]; |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_L8 ************************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D l8 texture, return 4 GLchans */ |
| static void FETCH(l8)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1); |
| texel[RCOMP] = |
| texel[GCOMP] = |
| texel[BCOMP] = UBYTE_TO_CHAN( src[0] ); |
| texel[ACOMP] = CHAN_MAX; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_l8(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *rgba = (const GLubyte *) texel; |
| GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1); |
| *dst = rgba[RCOMP]; |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_I8 ************************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D i8 texture, return 4 GLchans */ |
| static void FETCH(i8)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1); |
| texel[RCOMP] = |
| texel[GCOMP] = |
| texel[BCOMP] = |
| texel[ACOMP] = UBYTE_TO_CHAN( src[0] ); |
| } |
| |
| #if DIM == 3 |
| static void store_texel_i8(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *rgba = (const GLubyte *) texel; |
| GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1); |
| *dst = rgba[RCOMP]; |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_CI8 ***********************************************************/ |
| |
| /* Fetch CI texel from 1D, 2D or 3D ci8 texture, lookup the index in a |
| * color table, and return 4 GLchans. |
| */ |
| static void FETCH(ci8)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *texel ) |
| { |
| const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1); |
| const struct gl_color_table *palette; |
| GLubyte texelUB[4]; |
| GLuint index; |
| GET_CURRENT_CONTEXT(ctx); |
| |
| if (ctx->Texture.SharedPalette) { |
| palette = &ctx->Texture.Palette; |
| } |
| else { |
| palette = &texImage->TexObject->Palette; |
| } |
| if (palette->Size == 0) |
| return; /* undefined results */ |
| |
| /* Mask the index against size of palette to avoid going out of bounds */ |
| index = (*src) & (palette->Size - 1); |
| |
| { |
| const GLubyte *table = palette->TableUB; |
| switch (palette->_BaseFormat) { |
| case GL_ALPHA: |
| texelUB[RCOMP] = |
| texelUB[GCOMP] = |
| texelUB[BCOMP] = 0; |
| texelUB[ACOMP] = table[index]; |
| break;; |
| case GL_LUMINANCE: |
| texelUB[RCOMP] = |
| texelUB[GCOMP] = |
| texelUB[BCOMP] = table[index]; |
| texelUB[ACOMP] = 255; |
| break; |
| case GL_INTENSITY: |
| texelUB[RCOMP] = |
| texelUB[GCOMP] = |
| texelUB[BCOMP] = |
| texelUB[ACOMP] = table[index]; |
| break;; |
| case GL_LUMINANCE_ALPHA: |
| texelUB[RCOMP] = |
| texelUB[GCOMP] = |
| texelUB[BCOMP] = table[index * 2 + 0]; |
| texelUB[ACOMP] = table[index * 2 + 1]; |
| break;; |
| case GL_RGB: |
| texelUB[RCOMP] = table[index * 3 + 0]; |
| texelUB[GCOMP] = table[index * 3 + 1]; |
| texelUB[BCOMP] = table[index * 3 + 2]; |
| texelUB[ACOMP] = 255; |
| break;; |
| case GL_RGBA: |
| texelUB[RCOMP] = table[index * 4 + 0]; |
| texelUB[GCOMP] = table[index * 4 + 1]; |
| texelUB[BCOMP] = table[index * 4 + 2]; |
| texelUB[ACOMP] = table[index * 4 + 3]; |
| break;; |
| default: |
| _mesa_problem(ctx, "Bad palette format in fetch_texel_ci8"); |
| return; |
| } |
| #if CHAN_TYPE == GL_UNSIGNED_BYTE |
| COPY_4UBV(texel, texelUB); |
| #elif CHAN_TYPE == GL_UNSIGNED_SHORT |
| texel[0] = UBYTE_TO_USHORT(texelUB[0]); |
| texel[1] = UBYTE_TO_USHORT(texelUB[1]); |
| texel[2] = UBYTE_TO_USHORT(texelUB[2]); |
| texel[3] = UBYTE_TO_USHORT(texelUB[3]); |
| #else |
| texel[0] = UBYTE_TO_FLOAT(texelUB[0]); |
| texel[1] = UBYTE_TO_FLOAT(texelUB[1]); |
| texel[2] = UBYTE_TO_FLOAT(texelUB[2]); |
| texel[3] = UBYTE_TO_FLOAT(texelUB[3]); |
| #endif |
| } |
| } |
| |
| #if DIM == 3 |
| static void store_texel_ci8(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *index = (const GLubyte *) texel; |
| GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1); |
| *dst = *index; |
| } |
| #endif |
| |
| |
| #if FEATURE_EXT_texture_sRGB |
| |
| /* Fetch texel from 1D, 2D or 3D srgb8 texture, return 4 GLfloats */ |
| static void FETCH(srgb8)(const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLfloat *texel ) |
| { |
| const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3); |
| texel[RCOMP] = nonlinear_to_linear(src[0]); |
| texel[GCOMP] = nonlinear_to_linear(src[1]); |
| texel[BCOMP] = nonlinear_to_linear(src[2]); |
| texel[ACOMP] = CHAN_MAX; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_srgb8(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *rgba = (const GLubyte *) texel; |
| GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3); |
| dst[0] = rgba[RCOMP]; /* no conversion */ |
| dst[1] = rgba[GCOMP]; |
| dst[2] = rgba[BCOMP]; |
| } |
| #endif |
| |
| /* Fetch texel from 1D, 2D or 3D srgba8 texture, return 4 GLfloats */ |
| static void FETCH(srgba8)(const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLfloat *texel ) |
| { |
| const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 4); |
| texel[RCOMP] = nonlinear_to_linear(src[0]); |
| texel[GCOMP] = nonlinear_to_linear(src[1]); |
| texel[BCOMP] = nonlinear_to_linear(src[2]); |
| texel[ACOMP] = UBYTE_TO_FLOAT(src[3]); /* linear! */ |
| } |
| |
| #if DIM == 3 |
| static void store_texel_srgba8(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *rgba = (const GLubyte *) texel; |
| GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 4); |
| dst[0] = rgba[RCOMP]; |
| dst[1] = rgba[GCOMP]; |
| dst[2] = rgba[BCOMP]; |
| } |
| #endif |
| |
| /* Fetch texel from 1D, 2D or 3D sl8 texture, return 4 GLfloats */ |
| static void FETCH(sl8)(const struct gl_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] = nonlinear_to_linear(src[0]); |
| texel[ACOMP] = CHAN_MAX; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_sl8(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *rgba = (const GLubyte *) texel; |
| GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1); |
| dst[0] = rgba[RCOMP]; |
| } |
| #endif |
| |
| /* Fetch texel from 1D, 2D or 3D sla8 texture, return 4 GLfloats */ |
| static void FETCH(sla8)(const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLfloat *texel ) |
| { |
| const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 2); |
| texel[RCOMP] = |
| texel[GCOMP] = |
| texel[BCOMP] = nonlinear_to_linear(src[0]); |
| texel[ACOMP] = UBYTE_TO_FLOAT(src[1]); /* linear */ |
| } |
| |
| #if DIM == 3 |
| static void store_texel_sla8(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| const GLubyte *rgba = (const GLubyte *) texel; |
| GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 2); |
| dst[0] = rgba[RCOMP]; |
| dst[1] = rgba[ACOMP]; |
| } |
| #endif |
| |
| |
| |
| #endif /* FEATURE_EXT_texture_sRGB */ |
| |
| |
| |
| /* MESA_FORMAT_YCBCR *********************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D ycbcr texture, return 4 GLchans */ |
| /* We convert YCbCr to RGB here */ |
| /* XXX this may break if GLchan != GLubyte */ |
| static void FETCH(ycbcr)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *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 */ |
| GLint r, g, b; |
| if (i & 1) { |
| /* odd pixel: use y1,cr,cb */ |
| r = (GLint) (1.164 * (y1-16) + 1.596 * (cr-128)); |
| g = (GLint) (1.164 * (y1-16) - 0.813 * (cr-128) - 0.391 * (cb-128)); |
| b = (GLint) (1.164 * (y1-16) + 2.018 * (cb-128)); |
| } |
| else { |
| /* even pixel: use y0,cr,cb */ |
| r = (GLint) (1.164 * (y0-16) + 1.596 * (cr-128)); |
| g = (GLint) (1.164 * (y0-16) - 0.813 * (cr-128) - 0.391 * (cb-128)); |
| b = (GLint) (1.164 * (y0-16) + 2.018 * (cb-128)); |
| } |
| texel[RCOMP] = CLAMP(r, 0, CHAN_MAX); |
| texel[GCOMP] = CLAMP(g, 0, CHAN_MAX); |
| texel[BCOMP] = CLAMP(b, 0, CHAN_MAX); |
| texel[ACOMP] = CHAN_MAX; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_ycbcr(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| (void) texImage; |
| (void) i; |
| (void) j; |
| (void) k; |
| (void) texel; |
| /* XXX to do */ |
| } |
| #endif |
| |
| |
| /* MESA_FORMAT_YCBCR_REV *****************************************************/ |
| |
| /* Fetch texel from 1D, 2D or 3D ycbcr_rev texture, return 4 GLchans */ |
| /* We convert YCbCr to RGB here */ |
| /* XXX this may break if GLchan != GLubyte */ |
| static void FETCH(ycbcr_rev)( const struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, GLchan *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 */ |
| GLint r, g, b; |
| if (i & 1) { |
| /* odd pixel: use y1,cr,cb */ |
| r = (GLint) (1.164 * (y1-16) + 1.596 * (cr-128)); |
| g = (GLint) (1.164 * (y1-16) - 0.813 * (cr-128) - 0.391 * (cb-128)); |
| b = (GLint) (1.164 * (y1-16) + 2.018 * (cb-128)); |
| } |
| else { |
| /* even pixel: use y0,cr,cb */ |
| r = (GLint) (1.164 * (y0-16) + 1.596 * (cr-128)); |
| g = (GLint) (1.164 * (y0-16) - 0.813 * (cr-128) - 0.391 * (cb-128)); |
| b = (GLint) (1.164 * (y0-16) + 2.018 * (cb-128)); |
| } |
| texel[RCOMP] = CLAMP(r, 0, CHAN_MAX); |
| texel[GCOMP] = CLAMP(g, 0, CHAN_MAX); |
| texel[BCOMP] = CLAMP(b, 0, CHAN_MAX); |
| texel[ACOMP] = CHAN_MAX; |
| } |
| |
| #if DIM == 3 |
| static void store_texel_ycbcr_rev(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| (void) texImage; |
| (void) i; |
| (void) j; |
| (void) k; |
| (void) texel; |
| /* XXX to do */ |
| } |
| #endif |
| |
| |
| /* MESA_TEXFORMAT_Z24_S8 ***************************************************/ |
| |
| static void FETCH(f_z24_s8)( const struct gl_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 GLfloat scale = 1.0F / (GLfloat) 0xffffff; |
| texel[0] = ((*src) >> 8) * scale; |
| ASSERT(texImage->TexFormat->MesaFormat == MESA_FORMAT_Z24_S8); |
| ASSERT(texel[0] >= 0.0F); |
| ASSERT(texel[0] <= 1.0F); |
| } |
| |
| #if DIM == 3 |
| static void store_texel_z24_s8(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| /* only store Z, not stencil */ |
| GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1); |
| GLfloat depth = *((GLfloat *) texel); |
| GLuint zi = ((GLuint) (depth * 0xffffff)) << 8; |
| *dst = zi | (*dst & 0xff); |
| } |
| #endif |
| |
| |
| /* MESA_TEXFORMAT_S8_Z24 ***************************************************/ |
| |
| static void FETCH(f_s8_z24)( const struct gl_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 GLfloat scale = 1.0F / (GLfloat) 0xffffff; |
| texel[0] = ((*src) & 0x00ffffff) * scale; |
| ASSERT(texImage->TexFormat->MesaFormat == MESA_FORMAT_S8_Z24); |
| ASSERT(texel[0] >= 0.0F); |
| ASSERT(texel[0] <= 1.0F); |
| } |
| |
| #if DIM == 3 |
| static void store_texel_s8_z24(struct gl_texture_image *texImage, |
| GLint i, GLint j, GLint k, const void *texel) |
| { |
| /* only store Z, not stencil */ |
| GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1); |
| GLfloat depth = *((GLfloat *) texel); |
| GLuint zi = (GLuint) (depth * 0xffffff); |
| *dst = zi | (*dst & 0xff000000); |
| } |
| #endif |
| |
| |
| #undef TEXEL_ADDR |
| #undef DIM |
| #undef FETCH |