X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fmain%2Ftexformat_tmp.h;h=cf1b3d87a44fedb7513e310d6eb0af0db08c6ffc;hb=263581bba4d61291c54313648063a30c47106f0b;hp=7a91e6393c6e7e5b46fd39b0eca05d9f2a675f07;hpb=9228a9362cbdc6894731bf6e4ba38162eea1e6db;p=mesa.git diff --git a/src/mesa/main/texformat_tmp.h b/src/mesa/main/texformat_tmp.h index 7a91e6393c6..cf1b3d87a44 100644 --- a/src/mesa/main/texformat_tmp.h +++ b/src/mesa/main/texformat_tmp.h @@ -1,10 +1,25 @@ -/* $Id: texformat_tmp.h,v 1.4 2002/05/09 20:51:05 keithw Exp $ */ +/** + * \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 definining \p DIM as the number texture dimensions + * (1, 2 or 3). According to the value of \p DIM a serie 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 + */ /* * Mesa 3-D graphics library - * Version: 3.5 + * Version: 6.1 * - * Copyright (C) 1999-2001 Brian Paul All Rights Reserved. + * Copyright (C) 1999-2004 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"), @@ -22,11 +37,9 @@ * 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. - * - * Author: - * Gareth Hughes */ + #if DIM == 1 #define CHAN_SRC( t, i, j, k, sz ) \ @@ -35,248 +48,535 @@ ((GLubyte *)(t)->Data + (i) * (sz)) #define USHORT_SRC( t, i, j, k ) \ ((GLushort *)(t)->Data + (i)) -#define FLOAT_SRC( t, i, j, k ) \ - ((GLfloat *)(t)->Data + (i)) +#define FLOAT_SRC( t, i, j, k, sz ) \ + ((GLfloat *)(t)->Data + (i) * (sz)) +#define HALF_SRC( t, i, j, k, sz ) \ + ((GLhalfNV *)(t)->Data + (i) * (sz)) -#define FETCH(x) fetch_1d_texel_##x +#define FETCH(x) fetch_texel_1d_##x #elif DIM == 2 #define CHAN_SRC( t, i, j, k, sz ) \ - ((GLchan *)(t)->Data + ((t)->Width * (j) + (i)) * (sz)) + ((GLchan *)(t)->Data + ((t)->RowStride * (j) + (i)) * (sz)) #define UBYTE_SRC( t, i, j, k, sz ) \ - ((GLubyte *)(t)->Data + ((t)->Width * (j) + (i)) * (sz)) + ((GLubyte *)(t)->Data + ((t)->RowStride * (j) + (i)) * (sz)) #define USHORT_SRC( t, i, j, k ) \ - ((GLushort *)(t)->Data + ((t)->Width * (j) + (i))) -#define FLOAT_SRC( t, i, j, k ) \ - ((GLfloat *)(t)->Data + ((t)->Width * (j) + (i))) + ((GLushort *)(t)->Data + ((t)->RowStride * (j) + (i))) +#define FLOAT_SRC( t, i, j, k, sz ) \ + ((GLfloat *)(t)->Data + ((t)->RowStride * (j) + (i)) * (sz)) +#define HALF_SRC( t, i, j, k, sz ) \ + ((GLhalfNV *)(t)->Data + ((t)->RowStride * (j) + (i)) * (sz)) -#define FETCH(x) fetch_2d_texel_##x +#define FETCH(x) fetch_texel_2d_##x #elif DIM == 3 #define CHAN_SRC( t, i, j, k, sz ) \ (GLchan *)(t)->Data + (((t)->Height * (k) + (j)) * \ - (t)->Width + (i)) * (sz) + (t)->RowStride + (i)) * (sz) #define UBYTE_SRC( t, i, j, k, sz ) \ ((GLubyte *)(t)->Data + (((t)->Height * (k) + (j)) * \ - (t)->Width + (i)) * (sz)) + (t)->RowStride + (i)) * (sz)) #define USHORT_SRC( t, i, j, k ) \ ((GLushort *)(t)->Data + (((t)->Height * (k) + (j)) * \ - (t)->Width + (i))) -#define FLOAT_SRC( t, i, j, k ) \ + (t)->RowStride + (i))) +#define FLOAT_SRC( t, i, j, k, sz ) \ ((GLfloat *)(t)->Data + (((t)->Height * (k) + (j)) * \ - (t)->Width + (i))) + (t)->RowStride + (i)) * (sz)) +#define HALF_SRC( t, i, j, k, sz ) \ + ((GLhalfNV *)(t)->Data + (((t)->Height * (k) + (j)) * \ + (t)->RowStride + (i)) * (sz)) -#define FETCH(x) fetch_3d_texel_##x +#define FETCH(x) fetch_texel_3d_##x #else #error illegal number of texture dimensions #endif +/* Fetch color 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, GLvoid *texel ) + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLchan *src = CHAN_SRC( texImage, i, j, k, 4 ); + COPY_CHAN4( texel, src ); +} + +/* Fetch color 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_SRC( texImage, i, j, k, 4 ); - GLchan *rgba = (GLchan *) texel; - COPY_CHAN4( rgba, src ); + 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]); } + +/* Fetch color 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, GLvoid *texel ) + GLint i, GLint j, GLint k, GLchan *texel ) { const GLchan *src = CHAN_SRC( texImage, i, j, k, 3 ); - GLchan *rgba = (GLchan *) texel; - rgba[RCOMP] = src[0]; - rgba[GCOMP] = src[1]; - rgba[BCOMP] = src[2]; - rgba[ACOMP] = CHAN_MAX; + texel[RCOMP] = src[0]; + texel[GCOMP] = src[1]; + texel[BCOMP] = src[2]; + texel[ACOMP] = CHAN_MAX; } +/* Fetch color 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_SRC( 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] = CHAN_MAXF; +} + +/* Fetch color 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, GLvoid *texel ) + GLint i, GLint j, GLint k, GLchan *texel ) { const GLchan *src = CHAN_SRC( texImage, i, j, k, 1 ); - GLchan *rgba = (GLchan *) texel; - rgba[RCOMP] = 0; - rgba[GCOMP] = 0; - rgba[BCOMP] = 0; - rgba[ACOMP] = src[0]; + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = 0; + texel[ACOMP] = src[0]; } +/* Fetch color 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_SRC( texImage, i, j, k, 1 ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = 0.0; + texel[ACOMP] = CHAN_TO_FLOAT(src[0]); +} + +/* Fetch color 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, GLvoid *texel ) + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLchan *src = CHAN_SRC( texImage, i, j, k, 1 ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = src[0]; + texel[ACOMP] = CHAN_MAX; +} + +/* Fetch color texel from 1D, 2D or 3D LUMIN texture, returning 4 GLchans */ +static void FETCH(f_luminance)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) { const GLchan *src = CHAN_SRC( texImage, i, j, k, 1 ); - GLchan *rgba = (GLchan *) texel; - rgba[RCOMP] = src[0]; - rgba[GCOMP] = src[0]; - rgba[BCOMP] = src[0]; - rgba[ACOMP] = CHAN_MAX; + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = CHAN_TO_FLOAT(src[0]); + texel[ACOMP] = CHAN_MAXF; } +/* Fetch color 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, GLvoid *texel ) + GLint i, GLint j, GLint k, GLchan *texel ) { const GLchan *src = CHAN_SRC( texImage, i, j, k, 2 ); - GLchan *rgba = (GLchan *) texel; - rgba[RCOMP] = src[0]; - rgba[GCOMP] = src[0]; - rgba[BCOMP] = src[0]; - rgba[ACOMP] = src[1]; + texel[RCOMP] = src[0]; + texel[GCOMP] = src[0]; + texel[BCOMP] = src[0]; + texel[ACOMP] = src[1]; } +/* Fetch color 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_SRC( texImage, i, j, k, 2 ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = CHAN_TO_FLOAT(src[0]); + texel[ACOMP] = CHAN_TO_FLOAT(src[1]); +} + + +/* Fetch color 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, GLvoid *texel ) + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLchan *src = CHAN_SRC( texImage, i, j, k, 1 ); + texel[RCOMP] = src[0]; + texel[GCOMP] = src[0]; + texel[BCOMP] = src[0]; + texel[ACOMP] = src[0]; +} + +/* Fetch color 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_SRC( texImage, i, j, k, 1 ); - GLchan *rgba = (GLchan *) texel; - rgba[RCOMP] = src[0]; - rgba[GCOMP] = src[0]; - rgba[BCOMP] = src[0]; - rgba[ACOMP] = src[0]; + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = + texel[ACOMP] = CHAN_TO_FLOAT(src[0]); } + +/* Fetch CI texel from 1D, 2D or 3D CI texture, returning 1 GLchan */ static void FETCH(color_index)( const struct gl_texture_image *texImage, - GLint i, GLint j, GLint k, GLvoid *texel ) + GLint i, GLint j, GLint k, GLchan *texel ) { const GLchan *src = CHAN_SRC( texImage, i, j, k, 1 ); - GLchan *index = (GLchan *) texel; - *index = *src; + texel[0] = src[0]; +} + +/* Fetch CI texel from 1D, 2D or 3D CI texture, returning 1 GLfloat */ +static void FETCH(f_color_index)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLchan *src = CHAN_SRC( texImage, i, j, k, 1 ); + texel[0] = (GLfloat) src[0]; +} + + +/* Fetch depth texel from 1D, 2D or 3D DEPTH texture, returning 1 GLfloat */ +/* Note: no GLchan version of this function */ +static void FETCH(f_depth_component)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLfloat *src = FLOAT_SRC( texImage, i, j, k, 1 ); + texel[0] = src[0]; +} + + +/* Fetch color 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_SRC( texImage, i, j, k, 4 ); + texel[RCOMP] = src[0]; + texel[GCOMP] = src[1]; + texel[BCOMP] = src[2]; + texel[ACOMP] = src[3]; +} + +/* Fetch color 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 GLhalfNV *src = HALF_SRC( 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]); +} + + +/* Fetch color 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_SRC( texImage, i, j, k, 3 ); + texel[RCOMP] = src[0]; + texel[GCOMP] = src[1]; + texel[BCOMP] = src[2]; + texel[ACOMP] = CHAN_MAXF; } -static void FETCH(depth_component)( const struct gl_texture_image *texImage, - GLint i, GLint j, GLint k, GLvoid *texel ) +/* Fetch color 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 GLfloat *src = FLOAT_SRC( texImage, i, j, k ); - GLfloat *depth = (GLfloat *) texel; - *depth = *src; + const GLhalfNV *src = HALF_SRC( 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] = CHAN_MAXF; } + + +/* + * Begin Hardware formats + */ + +/* Fetch color 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, GLvoid *texel ) + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 4 ); + texel[RCOMP] = UBYTE_TO_CHAN( src[3] ); + texel[GCOMP] = UBYTE_TO_CHAN( src[2] ); + texel[BCOMP] = UBYTE_TO_CHAN( src[1] ); + texel[ACOMP] = UBYTE_TO_CHAN( src[0] ); +} + +/* Fetch color 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 GLubyte *src = UBYTE_SRC( texImage, i, j, k, 4 ); - GLchan *rgba = (GLchan *) texel; - rgba[RCOMP] = UBYTE_TO_CHAN( src[3] ); - rgba[GCOMP] = UBYTE_TO_CHAN( src[2] ); - rgba[BCOMP] = UBYTE_TO_CHAN( src[1] ); - rgba[ACOMP] = UBYTE_TO_CHAN( src[0] ); + texel[RCOMP] = UBYTE_TO_FLOAT( src[3] ); + texel[GCOMP] = UBYTE_TO_FLOAT( src[2] ); + texel[BCOMP] = UBYTE_TO_FLOAT( src[1] ); + texel[ACOMP] = UBYTE_TO_FLOAT( src[0] ); } + +/* Fetch color 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, GLvoid *texel ) + GLint i, GLint j, GLint k, GLchan *texel ) { const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 4 ); - GLchan *rgba = (GLchan *) texel; - rgba[RCOMP] = UBYTE_TO_CHAN( src[2] ); - rgba[GCOMP] = UBYTE_TO_CHAN( src[1] ); - rgba[BCOMP] = UBYTE_TO_CHAN( src[0] ); - rgba[ACOMP] = UBYTE_TO_CHAN( src[3] ); + texel[RCOMP] = UBYTE_TO_CHAN( src[2] ); + texel[GCOMP] = UBYTE_TO_CHAN( src[1] ); + texel[BCOMP] = UBYTE_TO_CHAN( src[0] ); + texel[ACOMP] = UBYTE_TO_CHAN( src[3] ); } +/* Fetch color 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 GLubyte *src = UBYTE_SRC( texImage, i, j, k, 4 ); + texel[RCOMP] = UBYTE_TO_FLOAT( src[2] ); + texel[GCOMP] = UBYTE_TO_FLOAT( src[1] ); + texel[BCOMP] = UBYTE_TO_FLOAT( src[0] ); + texel[ACOMP] = UBYTE_TO_FLOAT( src[3] ); +} + + +/* Fetch color 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, GLvoid *texel ) + GLint i, GLint j, GLint k, GLchan *texel ) { const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 3 ); - GLchan *rgba = (GLchan *) texel; - rgba[RCOMP] = UBYTE_TO_CHAN( src[2] ); - rgba[GCOMP] = UBYTE_TO_CHAN( src[1] ); - rgba[BCOMP] = UBYTE_TO_CHAN( src[0] ); - rgba[ACOMP] = CHAN_MAX; + 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 color 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_SRC( 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] = CHAN_MAXF; +} + + +/* Fetch color 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, GLvoid *texel ) + GLint i, GLint j, GLint k, GLchan *texel ) { const GLushort *src = USHORT_SRC( texImage, i, j, k ); - GLchan *rgba = (GLchan *) texel; GLushort s = *src; - rgba[RCOMP] = UBYTE_TO_CHAN( ((s >> 8) & 0xf8) * 255 / 0xf8 ); - rgba[GCOMP] = UBYTE_TO_CHAN( ((s >> 3) & 0xfc) * 255 / 0xfc ); - rgba[BCOMP] = UBYTE_TO_CHAN( ((s << 3) & 0xf8) * 255 / 0xf8 ); - rgba[ACOMP] = CHAN_MAX; + const GLushort s = *src; + texel[RCOMP] = UBYTE_TO_CHAN( ((s >> 8) & 0xf8) * 255 / 0xf8 ); + texel[GCOMP] = UBYTE_TO_CHAN( ((s >> 3) & 0xfc) * 255 / 0xfc ); + texel[BCOMP] = UBYTE_TO_CHAN( ((s << 3) & 0xf8) * 255 / 0xf8 ); + texel[ACOMP] = CHAN_MAX; } +/* Fetch color 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_SRC( 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] = CHAN_MAXF; +} + + +/* Fetch color texel from 1D, 2D or 3D rgb565 texture, return 4 GLchans */ static void FETCH(argb4444)( const struct gl_texture_image *texImage, - GLint i, GLint j, GLint k, GLvoid *texel ) + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLushort *src = USHORT_SRC( texImage, i, j, k ); + const GLushort s = *src; + texel[RCOMP] = UBYTE_TO_CHAN( ((s >> 8) & 0xf) * 255 / 0xf ); + texel[GCOMP] = UBYTE_TO_CHAN( ((s >> 4) & 0xf) * 255 / 0xf ); + texel[BCOMP] = UBYTE_TO_CHAN( ((s ) & 0xf) * 255 / 0xf ); + texel[ACOMP] = UBYTE_TO_CHAN( ((s >> 12) & 0xf) * 255 / 0xf ); +} + +/* Fetch color texel from 1D, 2D or 3D rgb565 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_SRC( texImage, i, j, k ); - GLchan *rgba = (GLchan *) texel; GLushort s = *src; - rgba[RCOMP] = UBYTE_TO_CHAN( ((s >> 8) & 0xf) * 255 / 0xf ); - rgba[GCOMP] = UBYTE_TO_CHAN( ((s >> 4) & 0xf) * 255 / 0xf ); - rgba[BCOMP] = UBYTE_TO_CHAN( ((s ) & 0xf) * 255 / 0xf ); - rgba[ACOMP] = UBYTE_TO_CHAN( ((s >> 12) & 0xf) * 255 / 0xf ); + 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); } + +/* Fetch color 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, GLvoid *texel ) + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLushort *src = USHORT_SRC( texImage, i, j, k ); + const GLushort s = *src; + texel[RCOMP] = UBYTE_TO_CHAN( ((s >> 10) & 0x1f) * 255 / 0x1f ); + texel[GCOMP] = UBYTE_TO_CHAN( ((s >> 5) & 0x1f) * 255 / 0x1f ); + texel[BCOMP] = UBYTE_TO_CHAN( ((s ) & 0x1f) * 255 / 0x1f ); + texel[ACOMP] = UBYTE_TO_CHAN( ((s >> 15) & 0x01) * 255 ); +} + +/* Fetch color 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_SRC( texImage, i, j, k ); - GLchan *rgba = (GLchan *) texel; GLushort s = *src; - rgba[RCOMP] = UBYTE_TO_CHAN( ((s >> 10) & 0x1f) * 255 / 0x1f ); - rgba[GCOMP] = UBYTE_TO_CHAN( ((s >> 5) & 0x1f) * 255 / 0x1f ); - rgba[BCOMP] = UBYTE_TO_CHAN( ((s ) & 0x1f) * 255 / 0x1f ); - rgba[ACOMP] = UBYTE_TO_CHAN( ((s >> 15) & 0x01) * 255 ); + 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); } + +/* Fetch color 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, GLvoid *texel ) + GLint i, GLint j, GLint k, GLchan *texel ) { const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 2 ); - GLchan *rgba = (GLchan *) texel; - rgba[RCOMP] = UBYTE_TO_CHAN( src[0] ); - rgba[GCOMP] = UBYTE_TO_CHAN( src[0] ); - rgba[BCOMP] = UBYTE_TO_CHAN( src[0] ); - rgba[ACOMP] = UBYTE_TO_CHAN( src[1] ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = UBYTE_TO_CHAN( src[0] ); + texel[ACOMP] = UBYTE_TO_CHAN( src[1] ); } +/* Fetch color 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 GLubyte *src = UBYTE_SRC( texImage, i, j, k, 2 ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = UBYTE_TO_FLOAT( src[0] ); + texel[ACOMP] = UBYTE_TO_FLOAT( src[1] ); +} + + +/* Fetch color 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, GLvoid *texel ) + GLint i, GLint j, GLint k, GLchan *texel ) { const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 1 ); - GLchan *rgba = (GLchan *) texel; GLubyte s = *src; - rgba[RCOMP] = UBYTE_TO_CHAN( ((s ) & 0xe0) * 255 / 0xe0 ); - rgba[GCOMP] = UBYTE_TO_CHAN( ((s << 3) & 0xe0) * 255 / 0xe0 ); - rgba[BCOMP] = UBYTE_TO_CHAN( ((s << 5) & 0xc0) * 255 / 0xc0 ); - rgba[ACOMP] = CHAN_MAX; + const GLubyte s = *src; + texel[RCOMP] = UBYTE_TO_CHAN( ((s ) & 0xe0) * 255 / 0xe0 ); + texel[GCOMP] = UBYTE_TO_CHAN( ((s << 3) & 0xe0) * 255 / 0xe0 ); + texel[BCOMP] = UBYTE_TO_CHAN( ((s << 5) & 0xc0) * 255 / 0xc0 ); + texel[ACOMP] = CHAN_MAX; } +/* Fetch color 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_SRC( 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 << 5) & 0xc0) * (1.0F / 192.0F); + texel[ACOMP] = CHAN_MAXF; +} + + +/* Fetch color 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, GLvoid *texel ) + GLint i, GLint j, GLint k, GLchan *texel ) { const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 1 ); - GLchan *rgba = (GLchan *) texel; - rgba[RCOMP] = 0; - rgba[GCOMP] = 0; - rgba[BCOMP] = 0; - rgba[ACOMP] = UBYTE_TO_CHAN( src[0] ); + texel[RCOMP] = 0; + texel[GCOMP] = 0; + texel[BCOMP] = 0; + texel[ACOMP] = UBYTE_TO_CHAN( src[0] ); } +/* Fetch color 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_SRC( texImage, i, j, k, 1 ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = 0.0; + texel[ACOMP] = UBYTE_TO_FLOAT( src[0] ); +} + + +/* Fetch color 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, GLvoid *texel ) + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 1 ); + texel[RCOMP] = UBYTE_TO_CHAN( src[0] ); + texel[GCOMP] = UBYTE_TO_CHAN( src[0] ); + texel[BCOMP] = UBYTE_TO_CHAN( src[0] ); + texel[ACOMP] = CHAN_MAX; +} + +/* Fetch color 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_SRC( texImage, i, j, k, 1 ); - GLchan *rgba = (GLchan *) texel; - rgba[RCOMP] = UBYTE_TO_CHAN( src[0] ); - rgba[GCOMP] = UBYTE_TO_CHAN( src[0] ); - rgba[BCOMP] = UBYTE_TO_CHAN( src[0] ); - rgba[ACOMP] = CHAN_MAX; + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = UBYTE_TO_FLOAT( src[0] ); + texel[ACOMP] = CHAN_MAXF; } + +/* Fetch color 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, GLvoid *texel ) + GLint i, GLint j, GLint k, GLchan *texel ) { const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 1 ); - GLchan *rgba = (GLchan *) texel; - rgba[RCOMP] = UBYTE_TO_CHAN( src[0] ); - rgba[GCOMP] = UBYTE_TO_CHAN( src[0] ); - rgba[BCOMP] = UBYTE_TO_CHAN( src[0] ); - rgba[ACOMP] = UBYTE_TO_CHAN( src[0] ); + texel[RCOMP] = UBYTE_TO_CHAN( src[0] ); + texel[GCOMP] = UBYTE_TO_CHAN( src[0] ); + texel[BCOMP] = UBYTE_TO_CHAN( src[0] ); + texel[ACOMP] = UBYTE_TO_CHAN( src[0] ); } +/* Fetch color 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_SRC( texImage, i, j, k, 1 ); + texel[RCOMP] = + texel[GCOMP] = + texel[BCOMP] = + texel[ACOMP] = UBYTE_TO_FLOAT( src[0] ); +} + + +/* Fetch color texel from 1D, 2D or 3D ci8 texture, return 1 GLchan */ static void FETCH(ci8)( const struct gl_texture_image *texImage, - GLint i, GLint j, GLint k, GLvoid *texel ) + GLint i, GLint j, GLint k, GLchan *texel ) { const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 1 ); GLchan *index = (GLchan *) texel; @@ -284,9 +584,352 @@ static void FETCH(ci8)( const struct gl_texture_image *texImage, } +/* Fetch color texel from 1D, 2D or 3D ci8 texture, return 1 GLfloat */ +static void FETCH(f_ci8)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 1 ); + texel[0] = UBYTE_TO_FLOAT( *src ); +} + + +/* Fetch color 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_SRC( 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 color 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_SRC( 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] = CHAN_MAXF; +} + + +/* Fetch color 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_SRC( 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 color 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_SRC( 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] = CHAN_MAXF; +} + + +#if DIM == 2 /* Only 2D compressed textures possible */ + +static void FETCH(rgb_fxt1)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + /* Extract the (i,j) pixel from texImage->Data and return it + * in texel[RCOMP], texel[GCOMP], texel[BCOMP], texel[ACOMP]. + */ +} + +static void FETCH(f_rgb_fxt1)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + /* Extract the (i,j) pixel from texImage->Data and return it + * in texel[RCOMP], texel[GCOMP], texel[BCOMP], texel[ACOMP]. + */ +} + +static void FETCH(rgba_fxt1)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + /* Extract the (i,j) pixel from texImage->Data and return it + * in texel[RCOMP], texel[GCOMP], texel[BCOMP], texel[ACOMP]. + */ +} + +static void FETCH(f_rgba_fxt1)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + /* Extract the (i,j) pixel from texImage->Data and return it + * in texel[RCOMP], texel[GCOMP], texel[BCOMP], texel[ACOMP]. + */ +} + +#endif /* if DIM == 2 */ + + +#if DIM == 2 /* only 2D is valid */ + +static void FETCH(rgb_dxt1)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + /* Extract the (i,j) pixel from texImage->Data and return it + * in texel[RCOMP], texel[GCOMP], texel[BCOMP], texel[ACOMP]. + */ +} + +static void FETCH(f_rgb_dxt1)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + /* Extract the (i,j) pixel from texImage->Data and return it + * in texel[RCOMP], texel[GCOMP], texel[BCOMP], texel[ACOMP]. + */ +} + + +static void FETCH(rgba_dxt1)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + /* Extract the (i,j) pixel from texImage->Data and return it + * in texel[RCOMP], texel[GCOMP], texel[BCOMP], texel[ACOMP]. + */ +} + +static void FETCH(f_rgba_dxt1)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + /* Extract the (i,j) pixel from texImage->Data and return it + * in texel[RCOMP], texel[GCOMP], texel[BCOMP], texel[ACOMP]. + */ +} + + +static void FETCH(rgba_dxt3)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + /* Extract the (i,j) pixel from texImage->Data and return it + * in texel[RCOMP], texel[GCOMP], texel[BCOMP], texel[ACOMP]. + */ +} + +static void FETCH(f_rgba_dxt3)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + /* Extract the (i,j) pixel from texImage->Data and return it + * in texel[RCOMP], texel[GCOMP], texel[BCOMP], texel[ACOMP]. + */ +} + + +static void FETCH(rgba_dxt5)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + /* Extract the (i,j) pixel from texImage->Data and return it + * in texel[RCOMP], texel[GCOMP], texel[BCOMP], texel[ACOMP]. + */ +} + +static void FETCH(f_rgba_dxt5)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLfloat *texel ) +{ + /* Extract the (i,j) pixel from texImage->Data and return it + * in texel[RCOMP], texel[GCOMP], texel[BCOMP], texel[ACOMP]. + */ +} + +#endif + + + +/* big-endian */ + +#if 0 +static void FETCH(abgr8888)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 4 ); + texel[RCOMP] = UBYTE_TO_CHAN( src[3] ); + texel[GCOMP] = UBYTE_TO_CHAN( src[2] ); + texel[BCOMP] = UBYTE_TO_CHAN( src[1] ); + texel[ACOMP] = UBYTE_TO_CHAN( src[0] ); +} + +static void FETCH(bgra8888)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 4 ); + texel[RCOMP] = UBYTE_TO_CHAN( src[2] ); + texel[GCOMP] = UBYTE_TO_CHAN( src[1] ); + texel[BCOMP] = UBYTE_TO_CHAN( src[0] ); + texel[ACOMP] = UBYTE_TO_CHAN( src[3] ); +} + +static void FETCH(bgr888)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLubyte *src = UBYTE_SRC( 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; +} + +static void FETCH(bgr565)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLushort *src = USHORT_SRC( texImage, i, j, k ); + const GLushort s = *src; + texel[RCOMP] = UBYTE_TO_CHAN( ((s >> 8) & 0xf8) * 255 / 0xf8 ); + texel[GCOMP] = UBYTE_TO_CHAN( ((s >> 3) & 0xfc) * 255 / 0xfc ); + texel[BCOMP] = UBYTE_TO_CHAN( ((s << 3) & 0xf8) * 255 / 0xf8 ); + texel[ACOMP] = CHAN_MAX; +} + +static void FETCH(bgra4444)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLushort *src = USHORT_SRC( texImage, i, j, k ); + const GLushort s = *src; + texel[RCOMP] = UBYTE_TO_CHAN( ((s >> 8) & 0xf) * 255 / 0xf ); + texel[GCOMP] = UBYTE_TO_CHAN( ((s >> 4) & 0xf) * 255 / 0xf ); + texel[BCOMP] = UBYTE_TO_CHAN( ((s ) & 0xf) * 255 / 0xf ); + texel[ACOMP] = UBYTE_TO_CHAN( ((s >> 12) & 0xf) * 255 / 0xf ); +} + +static void FETCH(bgra5551)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLushort *src = USHORT_SRC( texImage, i, j, k ); + const GLushort s = *src; + texel[RCOMP] = UBYTE_TO_CHAN( ((s >> 10) & 0x1f) * 255 / 0x1f ); + texel[GCOMP] = UBYTE_TO_CHAN( ((s >> 5) & 0x1f) * 255 / 0x1f ); + texel[BCOMP] = UBYTE_TO_CHAN( ((s ) & 0x1f) * 255 / 0x1f ); + texel[ACOMP] = UBYTE_TO_CHAN( ((s >> 15) & 0x01) * 255 ); +} + +static void FETCH(la88)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 2 ); + texel[RCOMP] = UBYTE_TO_CHAN( src[0] ); + texel[GCOMP] = UBYTE_TO_CHAN( src[0] ); + texel[BCOMP] = UBYTE_TO_CHAN( src[0] ); + texel[ACOMP] = UBYTE_TO_CHAN( src[1] ); +} + +static void FETCH(bgr233)( const struct gl_texture_image *texImage, + GLint i, GLint j, GLint k, GLchan *texel ) +{ + const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 1 ); + const GLubyte s = *src; + texel[RCOMP] = UBYTE_TO_CHAN( ((s ) & 0xe0) * 255 / 0xe0 ); + texel[GCOMP] = UBYTE_TO_CHAN( ((s << 3) & 0xe0) * 255 / 0xe0 ); + texel[BCOMP] = UBYTE_TO_CHAN( ((s << 5) & 0xc0) * 255 / 0xc0 ); + texel[ACOMP] = CHAN_MAX; +} +#endif + + #undef CHAN_SRC #undef UBYTE_SRC #undef USHORT_SRC #undef FLOAT_SRC +#undef HALF_SRC #undef FETCH #undef DIM