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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 135 | giacomo | 1 | /* $Id: tmp_texformat.h,v 1.1 2003-04-24 14:24:01 giacomo Exp $ */ |
| 2 | |||
| 3 | /* |
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| 4 | * Mesa 3-D graphics library |
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| 5 | * Version: 4.1 |
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| 6 | * |
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| 7 | * Copyright (C) 1999-2002 Brian Paul All Rights Reserved. |
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| 8 | * |
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| 9 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 10 | * copy of this software and associated documentation files (the "Software"), |
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| 11 | * to deal in the Software without restriction, including without limitation |
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| 12 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 13 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 14 | * Software is furnished to do so, subject to the following conditions: |
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| 15 | * |
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| 16 | * The above copyright notice and this permission notice shall be included |
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| 17 | * in all copies or substantial portions of the Software. |
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| 18 | * |
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| 19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 20 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 22 | * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
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| 23 | * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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| 24 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| 25 | * |
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| 26 | * Authors: |
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| 27 | * Gareth Hughes |
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| 28 | * Brian Paul |
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| 29 | */ |
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| 30 | |||
| 31 | |||
| 32 | /* |
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| 33 | * This template file generates texel fetch functions for 1-D, 2-D and 3-D |
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| 34 | * texture images. |
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| 35 | */ |
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| 36 | |||
| 37 | |||
| 38 | #if DIM == 1 |
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| 39 | |||
| 40 | #define CHAN_SRC( t, i, j, k, sz ) \ |
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| 41 | ((GLchan *)(t)->Data + (i) * (sz)) |
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| 42 | #define UBYTE_SRC( t, i, j, k, sz ) \ |
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| 43 | ((GLubyte *)(t)->Data + (i) * (sz)) |
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| 44 | #define USHORT_SRC( t, i, j, k ) \ |
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| 45 | ((GLushort *)(t)->Data + (i)) |
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| 46 | #define FLOAT_SRC( t, i, j, k ) \ |
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| 47 | ((GLfloat *)(t)->Data + (i)) |
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| 48 | |||
| 49 | #define FETCH(x) fetch_1d_texel_##x |
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| 50 | |||
| 51 | #elif DIM == 2 |
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| 52 | |||
| 53 | #define CHAN_SRC( t, i, j, k, sz ) \ |
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| 54 | ((GLchan *)(t)->Data + ((t)->RowStride * (j) + (i)) * (sz)) |
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| 55 | #define UBYTE_SRC( t, i, j, k, sz ) \ |
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| 56 | ((GLubyte *)(t)->Data + ((t)->RowStride * (j) + (i)) * (sz)) |
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| 57 | #define USHORT_SRC( t, i, j, k ) \ |
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| 58 | ((GLushort *)(t)->Data + ((t)->RowStride * (j) + (i))) |
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| 59 | #define FLOAT_SRC( t, i, j, k ) \ |
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| 60 | ((GLfloat *)(t)->Data + ((t)->RowStride * (j) + (i))) |
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| 61 | |||
| 62 | #define FETCH(x) fetch_2d_texel_##x |
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| 63 | |||
| 64 | #elif DIM == 3 |
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| 65 | |||
| 66 | #define CHAN_SRC( t, i, j, k, sz ) \ |
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| 67 | (GLchan *)(t)->Data + (((t)->Height * (k) + (j)) * \ |
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| 68 | (t)->RowStride + (i)) * (sz) |
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| 69 | #define UBYTE_SRC( t, i, j, k, sz ) \ |
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| 70 | ((GLubyte *)(t)->Data + (((t)->Height * (k) + (j)) * \ |
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| 71 | (t)->RowStride + (i)) * (sz)) |
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| 72 | #define USHORT_SRC( t, i, j, k ) \ |
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| 73 | ((GLushort *)(t)->Data + (((t)->Height * (k) + (j)) * \ |
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| 74 | (t)->RowStride + (i))) |
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| 75 | #define FLOAT_SRC( t, i, j, k ) \ |
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| 76 | ((GLfloat *)(t)->Data + (((t)->Height * (k) + (j)) * \ |
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| 77 | (t)->RowStride + (i))) |
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| 78 | |||
| 79 | #define FETCH(x) fetch_3d_texel_##x |
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| 80 | |||
| 81 | #else |
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| 82 | #error illegal number of texture dimensions |
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| 83 | #endif |
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| 84 | |||
| 85 | |||
| 86 | static void FETCH(rgba)( const struct gl_texture_image *texImage, |
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| 87 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 88 | { |
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| 89 | const GLchan *src = CHAN_SRC( texImage, i, j, k, 4 ); |
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| 90 | GLchan *rgba = (GLchan *) texel; |
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| 91 | COPY_CHAN4( rgba, src ); |
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| 92 | } |
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| 93 | |||
| 94 | static void FETCH(rgb)( const struct gl_texture_image *texImage, |
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| 95 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 96 | { |
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| 97 | const GLchan *src = CHAN_SRC( texImage, i, j, k, 3 ); |
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| 98 | GLchan *rgba = (GLchan *) texel; |
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| 99 | rgba[RCOMP] = src[0]; |
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| 100 | rgba[GCOMP] = src[1]; |
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| 101 | rgba[BCOMP] = src[2]; |
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| 102 | rgba[ACOMP] = CHAN_MAX; |
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| 103 | } |
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| 104 | |||
| 105 | static void FETCH(alpha)( const struct gl_texture_image *texImage, |
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| 106 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 107 | { |
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| 108 | const GLchan *src = CHAN_SRC( texImage, i, j, k, 1 ); |
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| 109 | GLchan *rgba = (GLchan *) texel; |
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| 110 | rgba[RCOMP] = 0; |
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| 111 | rgba[GCOMP] = 0; |
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| 112 | rgba[BCOMP] = 0; |
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| 113 | rgba[ACOMP] = src[0]; |
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| 114 | } |
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| 115 | |||
| 116 | static void FETCH(luminance)( const struct gl_texture_image *texImage, |
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| 117 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 118 | { |
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| 119 | const GLchan *src = CHAN_SRC( texImage, i, j, k, 1 ); |
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| 120 | GLchan *rgba = (GLchan *) texel; |
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| 121 | rgba[RCOMP] = src[0]; |
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| 122 | rgba[GCOMP] = src[0]; |
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| 123 | rgba[BCOMP] = src[0]; |
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| 124 | rgba[ACOMP] = CHAN_MAX; |
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| 125 | } |
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| 126 | |||
| 127 | static void FETCH(luminance_alpha)( const struct gl_texture_image *texImage, |
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| 128 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 129 | { |
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| 130 | const GLchan *src = CHAN_SRC( texImage, i, j, k, 2 ); |
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| 131 | GLchan *rgba = (GLchan *) texel; |
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| 132 | rgba[RCOMP] = src[0]; |
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| 133 | rgba[GCOMP] = src[0]; |
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| 134 | rgba[BCOMP] = src[0]; |
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| 135 | rgba[ACOMP] = src[1]; |
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| 136 | } |
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| 137 | |||
| 138 | static void FETCH(intensity)( const struct gl_texture_image *texImage, |
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| 139 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 140 | { |
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| 141 | const GLchan *src = CHAN_SRC( texImage, i, j, k, 1 ); |
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| 142 | GLchan *rgba = (GLchan *) texel; |
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| 143 | rgba[RCOMP] = src[0]; |
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| 144 | rgba[GCOMP] = src[0]; |
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| 145 | rgba[BCOMP] = src[0]; |
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| 146 | rgba[ACOMP] = src[0]; |
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| 147 | } |
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| 148 | |||
| 149 | static void FETCH(color_index)( const struct gl_texture_image *texImage, |
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| 150 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 151 | { |
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| 152 | const GLchan *src = CHAN_SRC( texImage, i, j, k, 1 ); |
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| 153 | GLchan *index = (GLchan *) texel; |
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| 154 | *index = *src; |
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| 155 | } |
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| 156 | |||
| 157 | static void FETCH(depth_component)( const struct gl_texture_image *texImage, |
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| 158 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 159 | { |
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| 160 | const GLfloat *src = FLOAT_SRC( texImage, i, j, k ); |
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| 161 | GLfloat *depth = (GLfloat *) texel; |
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| 162 | *depth = *src; |
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| 163 | } |
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| 164 | |||
| 165 | static void FETCH(rgba8888)( const struct gl_texture_image *texImage, |
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| 166 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 167 | { |
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| 168 | const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 4 ); |
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| 169 | GLchan *rgba = (GLchan *) texel; |
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| 170 | rgba[RCOMP] = UBYTE_TO_CHAN( src[3] ); |
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| 171 | rgba[GCOMP] = UBYTE_TO_CHAN( src[2] ); |
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| 172 | rgba[BCOMP] = UBYTE_TO_CHAN( src[1] ); |
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| 173 | rgba[ACOMP] = UBYTE_TO_CHAN( src[0] ); |
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| 174 | } |
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| 175 | |||
| 176 | static void FETCH(argb8888)( const struct gl_texture_image *texImage, |
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| 177 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 178 | { |
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| 179 | const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 4 ); |
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| 180 | GLchan *rgba = (GLchan *) texel; |
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| 181 | rgba[RCOMP] = UBYTE_TO_CHAN( src[2] ); |
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| 182 | rgba[GCOMP] = UBYTE_TO_CHAN( src[1] ); |
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| 183 | rgba[BCOMP] = UBYTE_TO_CHAN( src[0] ); |
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| 184 | rgba[ACOMP] = UBYTE_TO_CHAN( src[3] ); |
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| 185 | } |
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| 186 | |||
| 187 | static void FETCH(rgb888)( const struct gl_texture_image *texImage, |
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| 188 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 189 | { |
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| 190 | const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 3 ); |
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| 191 | GLchan *rgba = (GLchan *) texel; |
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| 192 | rgba[RCOMP] = UBYTE_TO_CHAN( src[2] ); |
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| 193 | rgba[GCOMP] = UBYTE_TO_CHAN( src[1] ); |
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| 194 | rgba[BCOMP] = UBYTE_TO_CHAN( src[0] ); |
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| 195 | rgba[ACOMP] = CHAN_MAX; |
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| 196 | } |
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| 197 | |||
| 198 | static void FETCH(rgb565)( const struct gl_texture_image *texImage, |
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| 199 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 200 | { |
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| 201 | const GLushort *src = USHORT_SRC( texImage, i, j, k ); |
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| 202 | const GLushort s = *src; |
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| 203 | GLchan *rgba = (GLchan *) texel; |
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| 204 | rgba[RCOMP] = UBYTE_TO_CHAN( ((s >> 8) & 0xf8) * 255 / 0xf8 ); |
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| 205 | rgba[GCOMP] = UBYTE_TO_CHAN( ((s >> 3) & 0xfc) * 255 / 0xfc ); |
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| 206 | rgba[BCOMP] = UBYTE_TO_CHAN( ((s << 3) & 0xf8) * 255 / 0xf8 ); |
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| 207 | rgba[ACOMP] = CHAN_MAX; |
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| 208 | } |
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| 209 | |||
| 210 | static void FETCH(argb4444)( const struct gl_texture_image *texImage, |
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| 211 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 212 | { |
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| 213 | const GLushort *src = USHORT_SRC( texImage, i, j, k ); |
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| 214 | const GLushort s = *src; |
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| 215 | GLchan *rgba = (GLchan *) texel; |
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| 216 | rgba[RCOMP] = UBYTE_TO_CHAN( ((s >> 8) & 0xf) * 255 / 0xf ); |
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| 217 | rgba[GCOMP] = UBYTE_TO_CHAN( ((s >> 4) & 0xf) * 255 / 0xf ); |
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| 218 | rgba[BCOMP] = UBYTE_TO_CHAN( ((s ) & 0xf) * 255 / 0xf ); |
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| 219 | rgba[ACOMP] = UBYTE_TO_CHAN( ((s >> 12) & 0xf) * 255 / 0xf ); |
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| 220 | } |
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| 221 | |||
| 222 | static void FETCH(argb1555)( const struct gl_texture_image *texImage, |
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| 223 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 224 | { |
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| 225 | const GLushort *src = USHORT_SRC( texImage, i, j, k ); |
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| 226 | const GLushort s = *src; |
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| 227 | GLchan *rgba = (GLchan *) texel; |
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| 228 | rgba[RCOMP] = UBYTE_TO_CHAN( ((s >> 10) & 0x1f) * 255 / 0x1f ); |
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| 229 | rgba[GCOMP] = UBYTE_TO_CHAN( ((s >> 5) & 0x1f) * 255 / 0x1f ); |
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| 230 | rgba[BCOMP] = UBYTE_TO_CHAN( ((s ) & 0x1f) * 255 / 0x1f ); |
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| 231 | rgba[ACOMP] = UBYTE_TO_CHAN( ((s >> 15) & 0x01) * 255 ); |
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| 232 | } |
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| 233 | |||
| 234 | static void FETCH(al88)( const struct gl_texture_image *texImage, |
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| 235 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 236 | { |
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| 237 | const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 2 ); |
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| 238 | GLchan *rgba = (GLchan *) texel; |
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| 239 | rgba[RCOMP] = UBYTE_TO_CHAN( src[0] ); |
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| 240 | rgba[GCOMP] = UBYTE_TO_CHAN( src[0] ); |
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| 241 | rgba[BCOMP] = UBYTE_TO_CHAN( src[0] ); |
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| 242 | rgba[ACOMP] = UBYTE_TO_CHAN( src[1] ); |
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| 243 | } |
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| 244 | |||
| 245 | static void FETCH(rgb332)( const struct gl_texture_image *texImage, |
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| 246 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 247 | { |
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| 248 | const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 1 ); |
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| 249 | const GLubyte s = *src; |
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| 250 | GLchan *rgba = (GLchan *) texel; |
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| 251 | rgba[RCOMP] = UBYTE_TO_CHAN( ((s ) & 0xe0) * 255 / 0xe0 ); |
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| 252 | rgba[GCOMP] = UBYTE_TO_CHAN( ((s << 3) & 0xe0) * 255 / 0xe0 ); |
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| 253 | rgba[BCOMP] = UBYTE_TO_CHAN( ((s << 5) & 0xc0) * 255 / 0xc0 ); |
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| 254 | rgba[ACOMP] = CHAN_MAX; |
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| 255 | } |
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| 256 | |||
| 257 | static void FETCH(a8)( const struct gl_texture_image *texImage, |
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| 258 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 259 | { |
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| 260 | const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 1 ); |
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| 261 | GLchan *rgba = (GLchan *) texel; |
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| 262 | rgba[RCOMP] = 0; |
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| 263 | rgba[GCOMP] = 0; |
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| 264 | rgba[BCOMP] = 0; |
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| 265 | rgba[ACOMP] = UBYTE_TO_CHAN( src[0] ); |
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| 266 | } |
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| 267 | |||
| 268 | static void FETCH(l8)( const struct gl_texture_image *texImage, |
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| 269 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 270 | { |
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| 271 | const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 1 ); |
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| 272 | GLchan *rgba = (GLchan *) texel; |
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| 273 | rgba[RCOMP] = UBYTE_TO_CHAN( src[0] ); |
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| 274 | rgba[GCOMP] = UBYTE_TO_CHAN( src[0] ); |
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| 275 | rgba[BCOMP] = UBYTE_TO_CHAN( src[0] ); |
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| 276 | rgba[ACOMP] = CHAN_MAX; |
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| 277 | } |
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| 278 | |||
| 279 | static void FETCH(i8)( const struct gl_texture_image *texImage, |
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| 280 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 281 | { |
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| 282 | const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 1 ); |
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| 283 | GLchan *rgba = (GLchan *) texel; |
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| 284 | rgba[RCOMP] = UBYTE_TO_CHAN( src[0] ); |
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| 285 | rgba[GCOMP] = UBYTE_TO_CHAN( src[0] ); |
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| 286 | rgba[BCOMP] = UBYTE_TO_CHAN( src[0] ); |
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| 287 | rgba[ACOMP] = UBYTE_TO_CHAN( src[0] ); |
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| 288 | } |
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| 289 | |||
| 290 | static void FETCH(ci8)( const struct gl_texture_image *texImage, |
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| 291 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 292 | { |
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| 293 | const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 1 ); |
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| 294 | GLchan *index = (GLchan *) texel; |
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| 295 | *index = UBYTE_TO_CHAN( *src ); |
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| 296 | } |
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| 297 | |||
| 298 | /* XXX this may break if GLchan != GLubyte */ |
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| 299 | static void FETCH(ycbcr)( const struct gl_texture_image *texImage, |
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| 300 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 301 | { |
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| 302 | const GLushort *src0 = USHORT_SRC( texImage, (i & ~1), j, k ); /* even */ |
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| 303 | const GLushort *src1 = src0 + 1; /* odd */ |
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| 304 | const GLubyte y0 = (*src0 >> 8) & 0xff; /* luminance */ |
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| 305 | const GLubyte cb = *src0 & 0xff; /* chroma U */ |
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| 306 | const GLubyte y1 = (*src1 >> 8) & 0xff; /* luminance */ |
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| 307 | const GLubyte cr = *src1 & 0xff; /* chroma V */ |
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| 308 | GLchan *rgba = (GLchan *) texel; |
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| 309 | GLint r, g, b; |
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| 310 | if (i & 1) { |
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| 311 | /* odd pixel: use y1,cr,cb */ |
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| 312 | r = (GLint) (1.164 * (y1-16) + 1.596 * (cr-128)); |
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| 313 | g = (GLint) (1.164 * (y1-16) - 0.813 * (cr-128) - 0.391 * (cb-128)); |
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| 314 | b = (GLint) (1.164 * (y1-16) + 2.018 * (cb-128)); |
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| 315 | } |
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| 316 | else { |
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| 317 | /* even pixel: use y0,cr,cb */ |
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| 318 | r = (GLint) (1.164 * (y0-16) + 1.596 * (cr-128)); |
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| 319 | g = (GLint) (1.164 * (y0-16) - 0.813 * (cr-128) - 0.391 * (cb-128)); |
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| 320 | b = (GLint) (1.164 * (y0-16) + 2.018 * (cb-128)); |
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| 321 | } |
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| 322 | rgba[RCOMP] = CLAMP(r, 0, CHAN_MAX); |
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| 323 | rgba[GCOMP] = CLAMP(g, 0, CHAN_MAX); |
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| 324 | rgba[BCOMP] = CLAMP(b, 0, CHAN_MAX); |
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| 325 | rgba[ACOMP] = CHAN_MAX; |
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| 326 | } |
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| 327 | |||
| 328 | /* XXX this may break if GLchan != GLubyte */ |
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| 329 | static void FETCH(ycbcr_rev)( const struct gl_texture_image *texImage, |
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| 330 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 331 | { |
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| 332 | const GLushort *src0 = USHORT_SRC( texImage, (i & ~1), j, k ); /* even */ |
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| 333 | const GLushort *src1 = src0 + 1; /* odd */ |
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| 334 | const GLubyte y0 = *src0 & 0xff; /* luminance */ |
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| 335 | const GLubyte cr = (*src0 >> 8) & 0xff; /* chroma U */ |
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| 336 | const GLubyte y1 = *src1 & 0xff; /* luminance */ |
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| 337 | const GLubyte cb = (*src1 >> 8) & 0xff; /* chroma V */ |
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| 338 | GLchan *rgba = (GLchan *) texel; |
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| 339 | GLint r, g, b; |
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| 340 | if (i & 1) { |
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| 341 | /* odd pixel: use y1,cr,cb */ |
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| 342 | r = (GLint) (1.164 * (y1-16) + 1.596 * (cr-128)); |
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| 343 | g = (GLint) (1.164 * (y1-16) - 0.813 * (cr-128) - 0.391 * (cb-128)); |
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| 344 | b = (GLint) (1.164 * (y1-16) + 2.018 * (cb-128)); |
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| 345 | } |
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| 346 | else { |
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| 347 | /* even pixel: use y0,cr,cb */ |
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| 348 | r = (GLint) (1.164 * (y0-16) + 1.596 * (cr-128)); |
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| 349 | g = (GLint) (1.164 * (y0-16) - 0.813 * (cr-128) - 0.391 * (cb-128)); |
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| 350 | b = (GLint) (1.164 * (y0-16) + 2.018 * (cb-128)); |
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| 351 | } |
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| 352 | rgba[RCOMP] = CLAMP(r, 0, CHAN_MAX); |
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| 353 | rgba[GCOMP] = CLAMP(g, 0, CHAN_MAX); |
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| 354 | rgba[BCOMP] = CLAMP(b, 0, CHAN_MAX); |
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| 355 | rgba[ACOMP] = CHAN_MAX; |
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| 356 | } |
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| 357 | |||
| 358 | |||
| 359 | /* big-endian */ |
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| 360 | |||
| 361 | #if 0 |
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| 362 | static void FETCH(abgr8888)( const struct gl_texture_image *texImage, |
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| 363 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 364 | { |
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| 365 | const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 4 ); |
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| 366 | GLchan *rgba = (GLchan *) texel; |
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| 367 | rgba[RCOMP] = UBYTE_TO_CHAN( src[3] ); |
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| 368 | rgba[GCOMP] = UBYTE_TO_CHAN( src[2] ); |
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| 369 | rgba[BCOMP] = UBYTE_TO_CHAN( src[1] ); |
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| 370 | rgba[ACOMP] = UBYTE_TO_CHAN( src[0] ); |
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| 371 | } |
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| 372 | |||
| 373 | static void FETCH(bgra8888)( const struct gl_texture_image *texImage, |
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| 374 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 375 | { |
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| 376 | const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 4 ); |
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| 377 | GLchan *rgba = (GLchan *) texel; |
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| 378 | rgba[RCOMP] = UBYTE_TO_CHAN( src[2] ); |
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| 379 | rgba[GCOMP] = UBYTE_TO_CHAN( src[1] ); |
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| 380 | rgba[BCOMP] = UBYTE_TO_CHAN( src[0] ); |
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| 381 | rgba[ACOMP] = UBYTE_TO_CHAN( src[3] ); |
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| 382 | } |
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| 383 | |||
| 384 | static void FETCH(bgr888)( const struct gl_texture_image *texImage, |
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| 385 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 386 | { |
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| 387 | const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 3 ); |
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| 388 | GLchan *rgba = (GLchan *) texel; |
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| 389 | rgba[RCOMP] = UBYTE_TO_CHAN( src[2] ); |
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| 390 | rgba[GCOMP] = UBYTE_TO_CHAN( src[1] ); |
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| 391 | rgba[BCOMP] = UBYTE_TO_CHAN( src[0] ); |
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| 392 | rgba[ACOMP] = CHAN_MAX; |
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| 393 | } |
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| 394 | |||
| 395 | static void FETCH(bgr565)( const struct gl_texture_image *texImage, |
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| 396 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 397 | { |
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| 398 | const GLushort *src = USHORT_SRC( texImage, i, j, k ); |
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| 399 | const GLushort s = *src; |
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| 400 | GLchan *rgba = (GLchan *) texel; |
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| 401 | rgba[RCOMP] = UBYTE_TO_CHAN( ((s >> 8) & 0xf8) * 255 / 0xf8 ); |
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| 402 | rgba[GCOMP] = UBYTE_TO_CHAN( ((s >> 3) & 0xfc) * 255 / 0xfc ); |
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| 403 | rgba[BCOMP] = UBYTE_TO_CHAN( ((s << 3) & 0xf8) * 255 / 0xf8 ); |
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| 404 | rgba[ACOMP] = CHAN_MAX; |
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| 405 | } |
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| 406 | |||
| 407 | static void FETCH(bgra4444)( const struct gl_texture_image *texImage, |
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| 408 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 409 | { |
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| 410 | const GLushort *src = USHORT_SRC( texImage, i, j, k ); |
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| 411 | const GLushort s = *src; |
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| 412 | GLchan *rgba = (GLchan *) texel; |
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| 413 | rgba[RCOMP] = UBYTE_TO_CHAN( ((s >> 8) & 0xf) * 255 / 0xf ); |
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| 414 | rgba[GCOMP] = UBYTE_TO_CHAN( ((s >> 4) & 0xf) * 255 / 0xf ); |
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| 415 | rgba[BCOMP] = UBYTE_TO_CHAN( ((s ) & 0xf) * 255 / 0xf ); |
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| 416 | rgba[ACOMP] = UBYTE_TO_CHAN( ((s >> 12) & 0xf) * 255 / 0xf ); |
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| 417 | } |
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| 418 | |||
| 419 | static void FETCH(bgra5551)( const struct gl_texture_image *texImage, |
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| 420 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 421 | { |
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| 422 | const GLushort *src = USHORT_SRC( texImage, i, j, k ); |
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| 423 | const GLushort s = *src; |
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| 424 | GLchan *rgba = (GLchan *) texel; |
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| 425 | rgba[RCOMP] = UBYTE_TO_CHAN( ((s >> 10) & 0x1f) * 255 / 0x1f ); |
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| 426 | rgba[GCOMP] = UBYTE_TO_CHAN( ((s >> 5) & 0x1f) * 255 / 0x1f ); |
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| 427 | rgba[BCOMP] = UBYTE_TO_CHAN( ((s ) & 0x1f) * 255 / 0x1f ); |
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| 428 | rgba[ACOMP] = UBYTE_TO_CHAN( ((s >> 15) & 0x01) * 255 ); |
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| 429 | } |
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| 430 | |||
| 431 | static void FETCH(la88)( const struct gl_texture_image *texImage, |
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| 432 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 433 | { |
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| 434 | const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 2 ); |
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| 435 | GLchan *rgba = (GLchan *) texel; |
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| 436 | rgba[RCOMP] = UBYTE_TO_CHAN( src[0] ); |
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| 437 | rgba[GCOMP] = UBYTE_TO_CHAN( src[0] ); |
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| 438 | rgba[BCOMP] = UBYTE_TO_CHAN( src[0] ); |
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| 439 | rgba[ACOMP] = UBYTE_TO_CHAN( src[1] ); |
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| 440 | } |
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| 441 | |||
| 442 | static void FETCH(bgr233)( const struct gl_texture_image *texImage, |
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| 443 | GLint i, GLint j, GLint k, GLvoid *texel ) |
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| 444 | { |
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| 445 | const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 1 ); |
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| 446 | const GLubyte s = *src; |
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| 447 | GLchan *rgba = (GLchan *) texel; |
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| 448 | rgba[RCOMP] = UBYTE_TO_CHAN( ((s ) & 0xe0) * 255 / 0xe0 ); |
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| 449 | rgba[GCOMP] = UBYTE_TO_CHAN( ((s << 3) & 0xe0) * 255 / 0xe0 ); |
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| 450 | rgba[BCOMP] = UBYTE_TO_CHAN( ((s << 5) & 0xc0) * 255 / 0xc0 ); |
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| 451 | rgba[ACOMP] = CHAN_MAX; |
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| 452 | } |
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| 453 | #endif |
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| 454 | |||
| 455 | |||
| 456 | #undef CHAN_SRC |
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| 457 | #undef UBYTE_SRC |
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| 458 | #undef USHORT_SRC |
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| 459 | #undef FLOAT_SRC |
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| 460 | #undef FETCH |
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| 461 | #undef DIM |