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Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/main/texformat_tmp.h')
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1 files changed, 1762 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/main/texformat_tmp.h b/nx-X11/extras/Mesa/src/mesa/main/texformat_tmp.h new file mode 100644 index 000000000..22531d826 --- /dev/null +++ b/nx-X11/extras/Mesa/src/mesa/main/texformat_tmp.h @@ -0,0 +1,1762 @@ +/* + * Mesa 3-D graphics library + * Version: 6.3.2 + * + * Copyright (C) 1999-2005 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 CHAN_ADDR( t, i, j, k, sz ) \ + ((void) (j), (void) (k), \ + ((GLchan *)(t)->Data + (i) * (sz))) +#define UBYTE_ADDR( t, i, j, k, sz ) \ + ((void) (j), (void) (k), \ + ((GLubyte *)(t)->Data + (i) * (sz))) +#define USHORT_ADDR( t, i, j, k ) \ + ((void) (j), (void) (k), \ + ((GLushort *)(t)->Data + (i))) +#define UINT_ADDR( t, i, j, k ) \ + ((void) (j), (void) (k), \ + ((GLuint *)(t)->Data + (i))) +#define FLOAT_ADDR( t, i, j, k, sz ) \ + ((void) (j), (void) (k), \ + ((GLfloat *)(t)->Data + (i) * (sz))) +#define HALF_ADDR( t, i, j, k, sz ) \ + ((void) (j), (void) (k), \ + ((GLhalfARB *)(t)->Data + (i) * (sz))) + +#define FETCH(x) fetch_texel_1d_##x + +#elif DIM == 2 + +#define CHAN_ADDR( t, i, j, k, sz ) \ + ((void) (k), \ + ((GLchan *)(t)->Data + ((t)->RowStride * (j) + (i)) * (sz))) +#define UBYTE_ADDR( t, i, j, k, sz ) \ + ((void) (k), \ + ((GLubyte *)(t)->Data + ((t)->RowStride * (j) + (i)) * (sz))) +#define USHORT_ADDR( t, i, j, k ) \ + ((void) (k), \ + ((GLushort *)(t)->Data + ((t)->RowStride * (j) + (i)))) +#define UINT_ADDR( t, i, j, k ) \ + ((void) (k), \ + ((GLuint *)(t)->Data + ((t)->RowStride * (j) + (i)))) +#define FLOAT_ADDR( t, i, j, k, sz ) \ + ((void) (k), \ + ((GLfloat *)(t)->Data + ((t)->RowStride * (j) + (i)) * (sz))) +#define HALF_ADDR( t, i, j, k, sz ) \ + ((void) (k), \ + ((GLhalfARB *)(t)->Data + ((t)->RowStride * (j) + (i)) * (sz))) + +#define FETCH(x) fetch_texel_2d_##x + +#elif DIM == 3 + +#define CHAN_ADDR( t, i, j, k, sz ) \ + (GLchan *)(t)->Data + (((t)->Height * (k) + (j)) * \ + (t)->RowStride + (i)) * (sz) +#define UBYTE_ADDR( t, i, j, k, sz ) \ + ((GLubyte *)(t)->Data + (((t)->Height * (k) + (j)) * \ + (t)->RowStride + (i)) * (sz)) +#define USHORT_ADDR( t, i, j, k ) \ + ((GLushort *)(t)->Data + (((t)->Height * (k) + (j)) * \ + (t)->RowStride + (i))) +#define UINT_ADDR( t, i, j, k ) \ + ((GLuint *)(t)->Data + (((t)->Height * (k) + (j)) * \ + (t)->RowStride + (i))) +#define FLOAT_ADDR( t, i, j, k, sz ) \ + ((GLfloat *)(t)->Data + (((t)->Height * (k) + (j)) * \ + (t)->RowStride + (i)) * (sz)) +#define HALF_ADDR( t, i, j, k, sz ) \ + ((GLhalfARB *)(t)->Data + (((t)->Height * (k) + (j)) * \ + (t)->RowStride + (i)) * (sz)) + +#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 = CHAN_ADDR( 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 = CHAN_ADDR( 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 = CHAN_ADDR(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 = CHAN_ADDR( 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 = CHAN_ADDR( 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 = CHAN_ADDR(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 = CHAN_ADDR( texImage, i, j, k, 1 ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = 0; + texel[ACOMP] = src[0]; +} + +/* Fetch texel from 1D, 2D or 3D ALPHA texture, returning 4 GLfloats */ +static void FETCH(f_alpha)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLchan *src = CHAN_ADDR( texImage, i, j, k, 1 ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = 0.0; + texel[ACOMP] = CHAN_TO_FLOAT(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 = CHAN_ADDR(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 = CHAN_ADDR( texImage, i, j, k, 1 ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = src[0]; + texel[ACOMP] = CHAN_MAX; +} + +/* Fetch texel from 1D, 2D or 3D LUMIN texture, returning 4 GLfloats */ +static void FETCH(f_luminance)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLchan *src = CHAN_ADDR( texImage, i, j, k, 1 ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = CHAN_TO_FLOAT(src[0]); + texel[ACOMP] = 1.0F; +} + +#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 = CHAN_ADDR(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 = CHAN_ADDR( texImage, i, j, k, 2 ); + texel[RCOMP] = src[0]; + texel[GCOMP] = src[0]; + texel[BCOMP] = src[0]; + texel[ACOMP] = src[1]; +} + +/* Fetch texel from 1D, 2D or 3D L_A texture, returning 4 GLfloats */ +static void FETCH(f_luminance_alpha)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLchan *src = CHAN_ADDR( texImage, i, j, k, 2 ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = CHAN_TO_FLOAT(src[0]); + texel[ACOMP] = CHAN_TO_FLOAT(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 = CHAN_ADDR(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 = CHAN_ADDR( texImage, i, j, k, 1 ); + texel[RCOMP] = src[0]; + texel[GCOMP] = src[0]; + texel[BCOMP] = src[0]; + texel[ACOMP] = src[0]; +} + +/* Fetch texel from 1D, 2D or 3D INT. texture, returning 4 GLfloats */ +static void FETCH(f_intensity)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLchan *src = CHAN_ADDR( texImage, i, j, k, 1 ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = + texel[ACOMP] = CHAN_TO_FLOAT(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 = CHAN_ADDR(texImage, i, j, k, 1); + dst[0] = rgba[RCOMP]; +} +#endif + + +/* MESA_FORMAT_DEPTH_COMPONENT_F32 *******************************************/ + +/* Fetch depth texel from 1D, 2D or 3D float32 DEPTH texture, + * returning 1 GLfloat. + * Note: no GLchan version of this function. + */ +static void FETCH(f_depth_component_f32)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLfloat *src = FLOAT_ADDR( texImage, i, j, k, 1 ); + texel[0] = src[0]; +} + +#if DIM == 3 +static void store_texel_depth_component_f32(struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, const void *texel) +{ + const GLfloat *depth = (const GLfloat *) texel; + GLfloat *dst = FLOAT_ADDR(texImage, i, j, k, 1); + dst[0] = *depth; +} +#endif + + +/* MESA_FORMAT_DEPTH_COMPONENT16 *********************************************/ + +/* Fetch depth texel from 1D, 2D or 3D float32 DEPTH texture, + * returning 1 GLfloat. + * Note: no GLchan version of this function. + */ +static void FETCH(f_depth_component16)(const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLushort *src = USHORT_ADDR( texImage, i, j, k ); + texel[0] = src[0] * (1.0F / 65535.0F); +} + +#if DIM == 3 +static void store_texel_depth_component16(struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, const void *texel) +{ + const GLushort *depth = (const GLushort *) texel; + GLushort *dst = USHORT_ADDR(texImage, i, j, k); + dst[0] = *depth; +} +#endif + + +/* MESA_FORMAT_RGBA_F32 ******************************************************/ + +/* Fetch texel from 1D, 2D or 3D RGBA_FLOAT32 texture, returning 4 GLchans. + */ +static void FETCH(rgba_f32)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLfloat *src = FLOAT_ADDR( texImage, i, j, k, 4 ); + UNCLAMPED_FLOAT_TO_CHAN(texel[RCOMP], src[0]); + UNCLAMPED_FLOAT_TO_CHAN(texel[GCOMP], src[1]); + UNCLAMPED_FLOAT_TO_CHAN(texel[BCOMP], src[2]); + UNCLAMPED_FLOAT_TO_CHAN(texel[ACOMP], src[3]); +} + +/* 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 = FLOAT_ADDR( 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 = FLOAT_ADDR(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 GLchans. + */ +static void FETCH(rgba_f16)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLhalfARB *src = HALF_ADDR( texImage, i, j, k, 4 ); + UNCLAMPED_FLOAT_TO_CHAN(texel[RCOMP], _mesa_half_to_float(src[0])); + UNCLAMPED_FLOAT_TO_CHAN(texel[GCOMP], _mesa_half_to_float(src[1])); + UNCLAMPED_FLOAT_TO_CHAN(texel[BCOMP], _mesa_half_to_float(src[2])); + UNCLAMPED_FLOAT_TO_CHAN(texel[ACOMP], _mesa_half_to_float(src[3])); +} + +/* 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 = HALF_ADDR( 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 = HALF_ADDR(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 GLchans. + */ +static void FETCH(rgb_f32)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLfloat *src = FLOAT_ADDR( texImage, i, j, k, 3 ); + UNCLAMPED_FLOAT_TO_CHAN(texel[RCOMP], src[0]); + UNCLAMPED_FLOAT_TO_CHAN(texel[GCOMP], src[1]); + UNCLAMPED_FLOAT_TO_CHAN(texel[BCOMP], src[2]); + texel[ACOMP] = CHAN_MAX; +} + +/* 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 = FLOAT_ADDR( 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 = FLOAT_ADDR(texImage, i, j, k, 1); + dst[0] = *depth; +} +#endif + + +/* MESA_FORAMT_RGB_F16 *******************************************************/ + +/* Fetch texel from 1D, 2D or 3D RGBA_FLOAT16 texture, + * returning 4 GLchans. + */ +static void FETCH(rgb_f16)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLhalfARB *src = HALF_ADDR( texImage, i, j, k, 3 ); + UNCLAMPED_FLOAT_TO_CHAN(texel[RCOMP], _mesa_half_to_float(src[0])); + UNCLAMPED_FLOAT_TO_CHAN(texel[GCOMP], _mesa_half_to_float(src[1])); + UNCLAMPED_FLOAT_TO_CHAN(texel[BCOMP], _mesa_half_to_float(src[2])); + texel[ACOMP] = CHAN_MAX; +} + +/* 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 = HALF_ADDR( 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 = HALF_ADDR(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 GLchans. + */ +static void FETCH(alpha_f32)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLfloat *src = FLOAT_ADDR( texImage, i, j, k, 1 ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = 0; + UNCLAMPED_FLOAT_TO_CHAN(texel[ACOMP], src[0]); +} + +/* 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 = FLOAT_ADDR( 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 = FLOAT_ADDR(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 GLchans. + */ +static void FETCH(alpha_f16)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLhalfARB *src = HALF_ADDR( texImage, i, j, k, 1 ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = 0; + UNCLAMPED_FLOAT_TO_CHAN(texel[ACOMP], _mesa_half_to_float(src[0])); +} + +/* 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 = HALF_ADDR( 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 = HALF_ADDR(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 GLchans. + */ +static void FETCH(luminance_f32)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLfloat *src = FLOAT_ADDR( texImage, i, j, k, 1 ); + UNCLAMPED_FLOAT_TO_CHAN(texel[RCOMP], src[0]); + texel[GCOMP] = + texel[BCOMP] = texel[RCOMP]; + texel[ACOMP] = CHAN_MAX; +} + +/* 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 = FLOAT_ADDR( 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 = FLOAT_ADDR(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 GLchans. + */ +static void FETCH(luminance_f16)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLhalfARB *src = HALF_ADDR( texImage, i, j, k, 1 ); + UNCLAMPED_FLOAT_TO_CHAN(texel[RCOMP], _mesa_half_to_float(src[0])); + texel[GCOMP] = + texel[BCOMP] = texel[RCOMP]; + texel[ACOMP] = CHAN_MAX; +} + +/* 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 = HALF_ADDR( 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 = HALF_ADDR(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 GLchans. + */ +static void FETCH(luminance_alpha_f32)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLfloat *src = FLOAT_ADDR( texImage, i, j, k, 2 ); + UNCLAMPED_FLOAT_TO_CHAN(texel[RCOMP], src[0]); + texel[GCOMP] = + texel[BCOMP] = texel[RCOMP]; + UNCLAMPED_FLOAT_TO_CHAN(texel[ACOMP], src[1]); +} + +/* 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 = FLOAT_ADDR( 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 = FLOAT_ADDR(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(luminance_alpha_f16)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLhalfARB *src = HALF_ADDR( texImage, i, j, k, 2 ); + UNCLAMPED_FLOAT_TO_CHAN(texel[RCOMP], _mesa_half_to_float(src[0])); + texel[GCOMP] = + texel[BCOMP] = texel[RCOMP]; + UNCLAMPED_FLOAT_TO_CHAN(texel[ACOMP], _mesa_half_to_float(src[1])); +} + +/* 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 = HALF_ADDR( 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 = HALF_ADDR(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 GLchans. + */ +static void FETCH(intensity_f32)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLfloat *src = FLOAT_ADDR( texImage, i, j, k, 1 ); + UNCLAMPED_FLOAT_TO_CHAN(texel[RCOMP], src[0]); + texel[GCOMP] = + texel[BCOMP] = + texel[ACOMP] = texel[RCOMP]; +} + +/* 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 = FLOAT_ADDR( 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 = FLOAT_ADDR(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 GLchans. + */ +static void FETCH(intensity_f16)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLhalfARB *src = HALF_ADDR( texImage, i, j, k, 1 ); + UNCLAMPED_FLOAT_TO_CHAN(texel[RCOMP], _mesa_half_to_float(src[0])); + texel[GCOMP] = + texel[BCOMP] = + texel[ACOMP] = texel[RCOMP]; +} + +/* 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 = HALF_ADDR( 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 = HALF_ADDR(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 = *UINT_ADDR( texImage, i, j, k ); + 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 ); +} + +/* Fetch texel from 1D, 2D or 3D rgba8888 texture, return 4 GLfloats */ +static void FETCH(f_rgba8888)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLuint s = *UINT_ADDR( texImage, i, j, k ); + texel[RCOMP] = UBYTE_TO_FLOAT( (s >> 24) ); + texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff ); + texel[BCOMP] = UBYTE_TO_FLOAT( (s >> 8) & 0xff ); + texel[ACOMP] = UBYTE_TO_FLOAT( (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 = UINT_ADDR(texImage, i, j, k); + *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 = *UINT_ADDR( texImage, i, j, k ); + 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) ); +} + +/* Fetch texel from 1D, 2D or 3D abgr8888 texture, return 4 GLfloats */ +static void FETCH(f_rgba8888_rev)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLuint s = *UINT_ADDR( texImage, i, j, k ); + texel[RCOMP] = UBYTE_TO_FLOAT( (s ) & 0xff ); + texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 8) & 0xff ); + texel[BCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff ); + texel[ACOMP] = UBYTE_TO_FLOAT( (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 = UINT_ADDR(texImage, i, j, k); + *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 = *UINT_ADDR( texImage, i, j, k ); + 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) ); +} + +/* Fetch texel from 1D, 2D or 3D argb8888 texture, return 4 GLfloats */ +static void FETCH(f_argb8888)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLuint s = *UINT_ADDR( texImage, i, j, k ); + texel[RCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff ); + texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 8) & 0xff ); + texel[BCOMP] = UBYTE_TO_FLOAT( (s ) & 0xff ); + texel[ACOMP] = UBYTE_TO_FLOAT( (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 = UINT_ADDR(texImage, i, j, k); + *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 = *UINT_ADDR( texImage, i, j, k ); + 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 ); +} + +/* Fetch texel from 1D, 2D or 3D argb8888_rev texture, return 4 GLfloats */ +static void FETCH(f_argb8888_rev)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLuint s = *UINT_ADDR( texImage, i, j, k ); + texel[RCOMP] = UBYTE_TO_FLOAT( (s >> 8) & 0xff ); + texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff ); + texel[BCOMP] = UBYTE_TO_FLOAT( (s >> 24) ); + texel[ACOMP] = UBYTE_TO_FLOAT( (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 = UINT_ADDR(texImage, i, j, k); + *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 = UBYTE_ADDR( 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; +} + +/* Fetch texel from 1D, 2D or 3D rgb888 texture, return 4 GLfloats */ +static void FETCH(f_rgb888)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLubyte *src = UBYTE_ADDR( texImage, i, j, k, 3 ); + texel[RCOMP] = UBYTE_TO_FLOAT( src[2] ); + texel[GCOMP] = UBYTE_TO_FLOAT( src[1] ); + texel[BCOMP] = UBYTE_TO_FLOAT( src[0] ); + texel[ACOMP] = 1.0F; +} + +#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 = UBYTE_ADDR(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 = UBYTE_ADDR( 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; +} + +/* Fetch texel from 1D, 2D or 3D bgr888 texture, return 4 GLfloats */ +static void FETCH(f_bgr888)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLubyte *src = UBYTE_ADDR( texImage, i, j, k, 3 ); + texel[RCOMP] = UBYTE_TO_FLOAT( src[0] ); + texel[GCOMP] = UBYTE_TO_FLOAT( src[1] ); + texel[BCOMP] = UBYTE_TO_FLOAT( src[2] ); + texel[ACOMP] = 1.0F; +} + +#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 = UBYTE_ADDR(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 = USHORT_ADDR( texImage, i, j, k ); + 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; +} + +/* Fetch texel from 1D, 2D or 3D rgb565 texture, return 4 GLfloats */ +static void FETCH(f_rgb565)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLushort *src = USHORT_ADDR( texImage, i, j, k ); + const GLushort s = *src; + texel[RCOMP] = ((s >> 8) & 0xf8) * (1.0F / 248.0F); + texel[GCOMP] = ((s >> 3) & 0xfc) * (1.0F / 252.0F); + texel[BCOMP] = ((s << 3) & 0xf8) * (1.0F / 248.0F); + texel[ACOMP] = 1.0F; +} + +#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 = USHORT_ADDR(texImage, i, j, k); + *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 = USHORT_ADDR( texImage, i, j, k ); + 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; +} + +/* Fetch texel from 1D, 2D or 3D rgb565_rev texture, return 4 GLfloats */ +static void FETCH(f_rgb565_rev)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLushort *src = USHORT_ADDR( texImage, i, j, k ); + const GLushort s = (*src >> 8) | (*src << 8); /* byte swap */ + texel[RCOMP] = ((s >> 8) & 0xf8) * (1.0F / 248.0F); + texel[GCOMP] = ((s >> 3) & 0xfc) * (1.0F / 252.0F); + texel[BCOMP] = ((s << 3) & 0xf8) * (1.0F / 248.0F); + texel[ACOMP] = 1.0F; +} + +#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 = USHORT_ADDR(texImage, i, j, k); + *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 = USHORT_ADDR( texImage, i, j, k ); + 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) ); +} + +/* Fetch texel from 1D, 2D or 3D argb4444 texture, return 4 GLfloats */ +static void FETCH(f_argb4444)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLushort *src = USHORT_ADDR( texImage, i, j, k ); + const GLushort s = *src; + texel[RCOMP] = ((s >> 8) & 0xf) * (1.0F / 15.0F); + texel[GCOMP] = ((s >> 4) & 0xf) * (1.0F / 15.0F); + texel[BCOMP] = ((s ) & 0xf) * (1.0F / 15.0F); + texel[ACOMP] = ((s >> 12) & 0xf) * (1.0F / 15.0F); +} + +#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 = USHORT_ADDR(texImage, i, j, k); + *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 = *USHORT_ADDR( texImage, i, j, k ); + 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) ); +} + +/* Fetch texel from 1D, 2D or 3D argb4444_rev texture, return 4 GLfloats */ +static void FETCH(f_argb4444_rev)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLushort s = *USHORT_ADDR( texImage, i, j, k ); + texel[RCOMP] = ((s ) & 0xf) * (1.0F / 15.0F); + texel[GCOMP] = ((s >> 12) & 0xf) * (1.0F / 15.0F); + texel[BCOMP] = ((s >> 8) & 0xf) * (1.0F / 15.0F); + texel[ACOMP] = ((s >> 4) & 0xf) * (1.0F / 15.0F); +} + +#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 = USHORT_ADDR(texImage, i, j, k); + *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 = USHORT_ADDR( texImage, i, j, k ); + 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 ); +} + +/* Fetch texel from 1D, 2D or 3D argb1555 texture, return 4 GLfloats */ +static void FETCH(f_argb1555)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLushort *src = USHORT_ADDR( texImage, i, j, k ); + const GLushort s = *src; + texel[RCOMP] = ((s >> 10) & 0x1f) * (1.0F / 31.0F); + texel[GCOMP] = ((s >> 5) & 0x1f) * (1.0F / 31.0F); + texel[BCOMP] = ((s ) & 0x1f) * (1.0F / 31.0F); + texel[ACOMP] = ((s >> 15) & 0x01); +} + +#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 = USHORT_ADDR(texImage, i, j, k); + *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 = USHORT_ADDR( texImage, i, j, k ); + 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 ); +} + +/* Fetch texel from 1D, 2D or 3D argb1555_rev texture, return 4 GLfloats */ +static void FETCH(f_argb1555_rev)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLushort *src = USHORT_ADDR( texImage, i, j, k ); + const GLushort s = (*src << 8) | (*src >> 8); /* byteswap */ + texel[RCOMP] = ((s >> 10) & 0x1f) * (1.0F / 31.0F); + texel[GCOMP] = ((s >> 5) & 0x1f) * (1.0F / 31.0F); + texel[BCOMP] = ((s ) & 0x1f) * (1.0F / 31.0F); + texel[ACOMP] = ((s >> 15) & 0x01); +} + +#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 = USHORT_ADDR(texImage, i, j, k); + *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 = *USHORT_ADDR( texImage, i, j, k ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = UBYTE_TO_CHAN( s & 0xff ); + texel[ACOMP] = UBYTE_TO_CHAN( s >> 8 ); +} + +/* Fetch texel from 1D, 2D or 3D al88 texture, return 4 GLfloats */ +static void FETCH(f_al88)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLushort s = *USHORT_ADDR( texImage, i, j, k ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = UBYTE_TO_FLOAT( s & 0xff ); + texel[ACOMP] = UBYTE_TO_FLOAT( 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 = USHORT_ADDR(texImage, i, j, k); + *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 = *USHORT_ADDR( texImage, i, j, k ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = UBYTE_TO_CHAN( s >> 8 ); + texel[ACOMP] = UBYTE_TO_CHAN( s & 0xff ); +} + +/* Fetch texel from 1D, 2D or 3D al88_rev texture, return 4 GLfloats */ +static void FETCH(f_al88_rev)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLushort s = *USHORT_ADDR( texImage, i, j, k ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = UBYTE_TO_FLOAT( s >> 8 ); + texel[ACOMP] = UBYTE_TO_FLOAT( 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 = USHORT_ADDR(texImage, i, j, k); + *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 = UBYTE_ADDR( 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; +} + +/* Fetch texel from 1D, 2D or 3D rgb332 texture, return 4 GLfloats */ +static void FETCH(f_rgb332)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLubyte *src = UBYTE_ADDR( texImage, i, j, k, 1 ); + const GLubyte s = *src; + texel[RCOMP] = ((s ) & 0xe0) * (1.0F / 224.0F); + texel[GCOMP] = ((s << 3) & 0xe0) * (1.0F / 224.0F); + texel[BCOMP] = ((s << 6) & 0xc0) * (1.0F / 192.0F); + texel[ACOMP] = 1.0F; +} + +#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 = UBYTE_ADDR(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 = UBYTE_ADDR( texImage, i, j, k, 1 ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = 0; + texel[ACOMP] = UBYTE_TO_CHAN( src[0] ); +} + +/* Fetch texel from 1D, 2D or 3D a8 texture, return 4 GLfloats */ +static void FETCH(f_a8)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLubyte *src = UBYTE_ADDR( texImage, i, j, k, 1 ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = 0.0; + texel[ACOMP] = UBYTE_TO_FLOAT( 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 = UBYTE_ADDR(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 = UBYTE_ADDR( texImage, i, j, k, 1 ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = UBYTE_TO_CHAN( src[0] ); + texel[ACOMP] = CHAN_MAX; +} + +/* Fetch texel from 1D, 2D or 3D l8 texture, return 4 GLfloats */ +static void FETCH(f_l8)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLubyte *src = UBYTE_ADDR( texImage, i, j, k, 1 ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = UBYTE_TO_FLOAT( src[0] ); + texel[ACOMP] = 1.0F; +} + +#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 = UBYTE_ADDR(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 = UBYTE_ADDR( texImage, i, j, k, 1 ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = + texel[ACOMP] = UBYTE_TO_CHAN( src[0] ); +} + +/* Fetch texel from 1D, 2D or 3D i8 texture, return 4 GLfloats */ +static void FETCH(f_i8)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLubyte *src = UBYTE_ADDR( texImage, i, j, k, 1 ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = + texel[ACOMP] = UBYTE_TO_FLOAT( 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 = UBYTE_ADDR(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 = UBYTE_ADDR( texImage, i, j, k, 1 ); + const struct gl_color_table *palette; + const GLchan *table; + 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 */ + ASSERT(palette->Type != GL_FLOAT); + table = (const GLchan *) palette->Table; + + /* Mask the index against size of palette to avoid going out of bounds */ + index = (*src) & (palette->Size - 1); + + switch (palette->Format) { + case GL_ALPHA: + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = 0; + texel[ACOMP] = table[index]; + return; + case GL_LUMINANCE: + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = table[index]; + texel[ACOMP] = CHAN_MAX; + break; + case GL_INTENSITY: + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = + texel[ACOMP] = table[index]; + return; + case GL_LUMINANCE_ALPHA: + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = table[index * 2 + 0]; + texel[ACOMP] = table[index * 2 + 1]; + return; + case GL_RGB: + texel[RCOMP] = table[index * 3 + 0]; + texel[GCOMP] = table[index * 3 + 1]; + texel[BCOMP] = table[index * 3 + 2]; + texel[ACOMP] = CHAN_MAX; + return; + case GL_RGBA: + texel[RCOMP] = table[index * 4 + 0]; + texel[GCOMP] = table[index * 4 + 1]; + texel[BCOMP] = table[index * 4 + 2]; + texel[ACOMP] = table[index * 4 + 3]; + return; + default: + _mesa_problem(ctx, "Bad palette format in palette_sample"); + } +} + + +/* Fetch CI texel from 1D, 2D or 3D ci8 texture, lookup the index in a + * color table, and return 4 GLfloats. + */ +static void FETCH(f_ci8)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + GLchan rgba[4]; + /* Sample as GLchan */ + FETCH(ci8)(texImage, i, j, k, rgba); + /* and return as floats */ + texel[RCOMP] = CHAN_TO_FLOAT(rgba[RCOMP]); + texel[GCOMP] = CHAN_TO_FLOAT(rgba[GCOMP]); + texel[BCOMP] = CHAN_TO_FLOAT(rgba[BCOMP]); + texel[ACOMP] = CHAN_TO_FLOAT(rgba[ACOMP]); +} + +#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 = UBYTE_ADDR(texImage, i, j, k, 1); + *dst = *index; +} +#endif + + +/* 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 = USHORT_ADDR( texImage, (i & ~1), j, k ); /* 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; +} + +/* 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 gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLushort *src0 = USHORT_ADDR( texImage, (i & ~1), j, k ); /* 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 */ + GLfloat r, g, b; + if (i & 1) { + /* odd pixel: use y1,cr,cb */ + r = (1.164 * (y1-16) + 1.596 * (cr-128)); + g = (1.164 * (y1-16) - 0.813 * (cr-128) - 0.391 * (cb-128)); + b = (1.164 * (y1-16) + 2.018 * (cb-128)); + } + else { + /* even pixel: use y0,cr,cb */ + r = (1.164 * (y0-16) + 1.596 * (cr-128)); + g = (1.164 * (y0-16) - 0.813 * (cr-128) - 0.391 * (cb-128)); + b = (1.164 * (y0-16) + 2.018 * (cb-128)); + } + /* XXX remove / 255 here by tweaking arithmetic above */ + r /= 255.0; + g /= 255.0; + b /= 255.0; + /* XXX should we really clamp??? */ + texel[RCOMP] = CLAMP(r, 0.0, 1.0); + texel[GCOMP] = CLAMP(g, 0.0, 1.0); + texel[BCOMP] = CLAMP(b, 0.0, 1.0); + texel[ACOMP] = 1.0F; +} + +#if DIM == 3 +static void store_texel_ycbcr(struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, const 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 = USHORT_ADDR( texImage, (i & ~1), j, k ); /* 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; +} + +/* 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 gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLushort *src0 = USHORT_ADDR( texImage, (i & ~1), j, k ); /* 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 */ + GLfloat r, g, b; + if (i & 1) { + /* odd pixel: use y1,cr,cb */ + r = (1.164 * (y1-16) + 1.596 * (cr-128)); + g = (1.164 * (y1-16) - 0.813 * (cr-128) - 0.391 * (cb-128)); + b = (1.164 * (y1-16) + 2.018 * (cb-128)); + } + else { + /* even pixel: use y0,cr,cb */ + r = (1.164 * (y0-16) + 1.596 * (cr-128)); + g = (1.164 * (y0-16) - 0.813 * (cr-128) - 0.391 * (cb-128)); + b = (1.164 * (y0-16) + 2.018 * (cb-128)); + } + /* XXX remove / 255 here by tweaking arithmetic above */ + r /= 255.0; + g /= 255.0; + b /= 255.0; + /* XXX should we really clamp??? */ + texel[RCOMP] = CLAMP(r, 0.0, 1.0); + texel[GCOMP] = CLAMP(g, 0.0, 1.0); + texel[BCOMP] = CLAMP(b, 0.0, 1.0); + texel[ACOMP] = 1.0F; +} + +#if DIM == 3 +static void store_texel_ycbcr_rev(struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, const void *texel) +{ + /* XXX to do */ +} +#endif + + + +#undef CHAN_ADDR +#undef UBYTE_ADDR +#undef USHORT_ADDR +#undef UINT_ADDR +#undef FLOAT_ADDR +#undef HALF_ADDR +#undef FETCH +#undef DIM |