progs/gallium/unit/u_format_test.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009-2010 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #include <stdlib.h>
  30 #include <stdio.h>
  31
  32 #include "util/u_format.h"
  33 #include "util/u_format_pack.h"
  34
  35
  36 #define MAX_PACKED_BYTES 4
  37
  38
  39 /**
  40  * A (packed, unpacked) color pair.
  41  */
  42 struct util_format_test_case
  43 {
  44    enum pipe_format format;
  45
  46    /**
  47     * Mask of the bits that actually meaningful data. Used to mask out the
  48     * "X" channels.
  49     */
  50    uint8_t mask[MAX_PACKED_BYTES];
  51
  52    uint8_t packed[MAX_PACKED_BYTES];
  53
  54    /**
  55     * RGBA.
  56     */
  57    double unpacked[4];
  58 };
  59
  60
  61 /*
  62  * Helper macros to create the packed bytes for longer words.
  63  */
  64
  65 #define PACKED_1x8(x) {x, 0, 0, 0}
  66 #define PACKED_2x8(x, y) {x, y, 0, 0}
  67 #define PACKED_3x8(x, y, z) {x, y, z, 0}
  68 #define PACKED_4x8(x, y, z, w) {x, y, z, w}
  69 #define PACKED_1x32(x) {(x) & 0xff, ((x) >> 8) & 0xff, ((x) >> 16) & 0xff, ((x) >> 24) & 0xff}
  70 #define PACKED_1x16(x) {(x) & 0xff, ((x) >> 8) & 0xff, 0, 0}
  71
  72
  73 /**
  74  * Test cases.
  75  *
  76  * These were manually entered. We could generate these
  77  *
  78  * To keep this to a we cover only the corner cases, which should produce
  79  * good enough coverage since that pixel format transformations are afine for
  80  * non SRGB formats.
  81  */
  82 static const struct util_format_test_case
  83 test_cases[] =
  84 {
  85
  86    /*
  87     * 32-bit rendertarget formats
  88     */
  89
  90    {PIPE_FORMAT_B8G8R8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x00000000), {0.0, 0.0, 0.0, 0.0}},
  91    {PIPE_FORMAT_B8G8R8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x000000ff), {0.0, 0.0, 1.0, 0.0}},
  92    {PIPE_FORMAT_B8G8R8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x0000ff00), {0.0, 1.0, 0.0, 0.0}},
  93    {PIPE_FORMAT_B8G8R8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x00ff0000), {1.0, 0.0, 0.0, 0.0}},
  94    {PIPE_FORMAT_B8G8R8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0xff000000), {0.0, 0.0, 0.0, 1.0}},
  95    {PIPE_FORMAT_B8G8R8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0xffffffff), {1.0, 1.0, 1.0, 1.0}},
  96
  97    {PIPE_FORMAT_B8G8R8X8_UNORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00000000), {0.0, 0.0, 0.0, 1.0}},
  98    {PIPE_FORMAT_B8G8R8X8_UNORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x000000ff), {0.0, 0.0, 1.0, 1.0}},
  99    {PIPE_FORMAT_B8G8R8X8_UNORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x0000ff00), {0.0, 1.0, 0.0, 1.0}},
 100    {PIPE_FORMAT_B8G8R8X8_UNORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00ff0000), {1.0, 0.0, 0.0, 1.0}},
 101    {PIPE_FORMAT_B8G8R8X8_UNORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0xff000000), {0.0, 0.0, 0.0, 1.0}},
 102    {PIPE_FORMAT_B8G8R8X8_UNORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0xffffffff), {1.0, 1.0, 1.0, 1.0}},
 103
 104    {PIPE_FORMAT_A8R8G8B8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x00000000), {0.0, 0.0, 0.0, 0.0}},
 105    {PIPE_FORMAT_A8R8G8B8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x000000ff), {0.0, 0.0, 0.0, 1.0}},
 106    {PIPE_FORMAT_A8R8G8B8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x0000ff00), {1.0, 0.0, 0.0, 0.0}},
 107    {PIPE_FORMAT_A8R8G8B8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x00ff0000), {0.0, 1.0, 0.0, 0.0}},
 108    {PIPE_FORMAT_A8R8G8B8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0xff000000), {0.0, 0.0, 1.0, 0.0}},
 109    {PIPE_FORMAT_A8R8G8B8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0xffffffff), {1.0, 1.0, 1.0, 1.0}},
 110
 111    {PIPE_FORMAT_X8R8G8B8_UNORM, PACKED_1x32(0xffffff00), PACKED_1x32(0x00000000), {0.0, 0.0, 0.0, 1.0}},
 112    {PIPE_FORMAT_X8R8G8B8_UNORM, PACKED_1x32(0xffffff00), PACKED_1x32(0x000000ff), {0.0, 0.0, 0.0, 1.0}},
 113    {PIPE_FORMAT_X8R8G8B8_UNORM, PACKED_1x32(0xffffff00), PACKED_1x32(0x0000ff00), {1.0, 0.0, 0.0, 1.0}},
 114    {PIPE_FORMAT_X8R8G8B8_UNORM, PACKED_1x32(0xffffff00), PACKED_1x32(0x00ff0000), {0.0, 1.0, 0.0, 1.0}},
 115    {PIPE_FORMAT_X8R8G8B8_UNORM, PACKED_1x32(0xffffff00), PACKED_1x32(0xff000000), {0.0, 0.0, 1.0, 1.0}},
 116    {PIPE_FORMAT_X8R8G8B8_UNORM, PACKED_1x32(0xffffff00), PACKED_1x32(0xffffffff), {1.0, 1.0, 1.0, 1.0}},
 117
 118    {PIPE_FORMAT_A8B8G8R8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x00000000), {0.0, 0.0, 0.0, 0.0}},
 119    {PIPE_FORMAT_A8B8G8R8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x000000ff), {0.0, 0.0, 0.0, 1.0}},
 120    {PIPE_FORMAT_A8B8G8R8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x0000ff00), {0.0, 0.0, 1.0, 0.0}},
 121    {PIPE_FORMAT_A8B8G8R8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x00ff0000), {0.0, 1.0, 0.0, 0.0}},
 122    {PIPE_FORMAT_A8B8G8R8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0xff000000), {1.0, 0.0, 0.0, 0.0}},
 123    {PIPE_FORMAT_A8B8G8R8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0xffffffff), {1.0, 1.0, 1.0, 1.0}},
 124
 125    {PIPE_FORMAT_X8B8G8R8_UNORM, PACKED_1x32(0xffffff00), PACKED_1x32(0x00000000), {0.0, 0.0, 0.0, 1.0}},
 126    {PIPE_FORMAT_X8B8G8R8_UNORM, PACKED_1x32(0xffffff00), PACKED_1x32(0x000000ff), {0.0, 0.0, 0.0, 1.0}},
 127    {PIPE_FORMAT_X8B8G8R8_UNORM, PACKED_1x32(0xffffff00), PACKED_1x32(0x0000ff00), {0.0, 0.0, 1.0, 1.0}},
 128    {PIPE_FORMAT_X8B8G8R8_UNORM, PACKED_1x32(0xffffff00), PACKED_1x32(0x00ff0000), {0.0, 1.0, 0.0, 1.0}},
 129    {PIPE_FORMAT_X8B8G8R8_UNORM, PACKED_1x32(0xffffff00), PACKED_1x32(0xff000000), {1.0, 0.0, 0.0, 1.0}},
 130    {PIPE_FORMAT_X8B8G8R8_UNORM, PACKED_1x32(0xffffff00), PACKED_1x32(0xffffffff), {1.0, 1.0, 1.0, 1.0}},
 131
 132    {PIPE_FORMAT_R10G10B10A2_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x00000000), {0.0, 0.0, 0.0, 0.0}},
 133    {PIPE_FORMAT_R10G10B10A2_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x000003ff), {1.0, 0.0, 0.0, 0.0}},
 134    {PIPE_FORMAT_R10G10B10A2_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x000ffc00), {0.0, 1.0, 0.0, 0.0}},
 135    {PIPE_FORMAT_R10G10B10A2_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x3ff00000), {0.0, 0.0, 1.0, 0.0}},
 136    {PIPE_FORMAT_R10G10B10A2_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0xc0000000), {0.0, 0.0, 0.0, 1.0}},
 137    {PIPE_FORMAT_R10G10B10A2_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0xffffffff), {1.0, 1.0, 1.0, 1.0}},
 138
 139    /*
 140     * 16-bit rendertarget formats
 141     */
 142
 143    {PIPE_FORMAT_B5G5R5A1_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x0000), {0.0, 0.0, 0.0, 0.0}},
 144    {PIPE_FORMAT_B5G5R5A1_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x001f), {0.0, 0.0, 1.0, 0.0}},
 145    {PIPE_FORMAT_B5G5R5A1_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x03e0), {0.0, 1.0, 0.0, 0.0}},
 146    {PIPE_FORMAT_B5G5R5A1_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x7c00), {1.0, 0.0, 0.0, 0.0}},
 147    {PIPE_FORMAT_B5G5R5A1_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x8000), {0.0, 0.0, 0.0, 1.0}},
 148    {PIPE_FORMAT_B5G5R5A1_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0xffff), {1.0, 1.0, 1.0, 1.0}},
 149
 150    {PIPE_FORMAT_B4G4R4A4_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x0000), {0.0, 0.0, 0.0, 0.0}},
 151    {PIPE_FORMAT_B4G4R4A4_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x000f), {0.0, 0.0, 1.0, 0.0}},
 152    {PIPE_FORMAT_B4G4R4A4_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x00f0), {0.0, 1.0, 0.0, 0.0}},
 153    {PIPE_FORMAT_B4G4R4A4_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x0f00), {1.0, 0.0, 0.0, 0.0}},
 154    {PIPE_FORMAT_B4G4R4A4_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0xf000), {0.0, 0.0, 0.0, 1.0}},
 155    {PIPE_FORMAT_B4G4R4A4_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0xffff), {1.0, 1.0, 1.0, 1.0}},
 156
 157    {PIPE_FORMAT_B5G6R5_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x0000), {0.0, 0.0, 0.0, 1.0}},
 158    {PIPE_FORMAT_B5G6R5_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x001f), {0.0, 0.0, 1.0, 1.0}},
 159    {PIPE_FORMAT_B5G6R5_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x07e0), {0.0, 1.0, 0.0, 1.0}},
 160    {PIPE_FORMAT_B5G6R5_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0xf800), {1.0, 0.0, 0.0, 1.0}},
 161    {PIPE_FORMAT_B5G6R5_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0xffff), {1.0, 1.0, 1.0, 1.0}},
 162
 163    /*
 164     * Luminance/intensity/alpha formats
 165     */
 166
 167    {PIPE_FORMAT_L8_UNORM, PACKED_1x8(0xff), PACKED_1x8(0x00), {0.0, 0.0, 0.0, 1.0}},
 168    {PIPE_FORMAT_L8_UNORM, PACKED_1x8(0xff), PACKED_1x8(0xff), {1.0, 1.0, 1.0, 1.0}},
 169
 170    {PIPE_FORMAT_A8_UNORM, PACKED_1x8(0xff), PACKED_1x8(0x00), {0.0, 0.0, 0.0, 0.0}},
 171    {PIPE_FORMAT_A8_UNORM, PACKED_1x8(0xff), PACKED_1x8(0xff), {0.0, 0.0, 0.0, 1.0}},
 172
 173    {PIPE_FORMAT_I8_UNORM, PACKED_1x8(0xff), PACKED_1x8(0x00), {0.0, 0.0, 0.0, 0.0}},
 174    {PIPE_FORMAT_I8_UNORM, PACKED_1x8(0xff), PACKED_1x8(0xff), {1.0, 1.0, 1.0, 1.0}},
 175
 176    {PIPE_FORMAT_L8A8_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x0000), {0.0, 0.0, 0.0, 0.0}},
 177    {PIPE_FORMAT_L8A8_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x00ff), {1.0, 1.0, 1.0, 0.0}},
 178    {PIPE_FORMAT_L8A8_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0xff00), {0.0, 0.0, 0.0, 1.0}},
 179    {PIPE_FORMAT_L8A8_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0xffff), {1.0, 1.0, 1.0, 1.0}},
 180
 181    {PIPE_FORMAT_L16_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x0000), {0.0, 0.0, 0.0, 1.0}},
 182    {PIPE_FORMAT_L16_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0xffff), {1.0, 1.0, 1.0, 1.0}},
 183
 184    /*
 185     * TODO: SRGB formats
 186     */
 187
 188    /*
 189     * Signed (bump map) formats
 190     */
 191
 192    {PIPE_FORMAT_R8G8B8X8_SNORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00000000), { 0.0,  0.0,  0.0,  1.0}},
 193    {PIPE_FORMAT_R8G8B8X8_SNORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x0000007f), { 1.0,  0.0,  0.0,  1.0}},
 194    {PIPE_FORMAT_R8G8B8X8_SNORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00000081), {-1.0,  0.0,  0.0,  1.0}},
 195    {PIPE_FORMAT_R8G8B8X8_SNORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00007f00), { 0.0,  1.0,  0.0,  1.0}},
 196    {PIPE_FORMAT_R8G8B8X8_SNORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00008100), { 0.0, -1.0,  0.0,  1.0}},
 197    {PIPE_FORMAT_R8G8B8X8_SNORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x007f0000), { 0.0,  0.0,  1.0,  1.0}},
 198    {PIPE_FORMAT_R8G8B8X8_SNORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00810000), { 0.0,  0.0, -1.0,  1.0}},
 199
 200    {PIPE_FORMAT_R8SG8SB8UX8U_NORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00000000), { 0.0,  0.0, 0.0, 1.0}},
 201    {PIPE_FORMAT_R8SG8SB8UX8U_NORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x0000007f), { 1.0,  0.0, 0.0, 1.0}},
 202    {PIPE_FORMAT_R8SG8SB8UX8U_NORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00000081), {-1.0,  0.0, 0.0, 1.0}},
 203    {PIPE_FORMAT_R8SG8SB8UX8U_NORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00007f00), { 0.0,  1.0, 0.0, 1.0}},
 204    {PIPE_FORMAT_R8SG8SB8UX8U_NORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00008100), { 0.0, -1.0, 0.0, 1.0}},
 205    {PIPE_FORMAT_R8SG8SB8UX8U_NORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00ff0000), { 0.0,  0.0, 1.0, 1.0}},
 206    {PIPE_FORMAT_R8SG8SB8UX8U_NORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0xff000000), { 0.0,  0.0, 0.0, 1.0}},
 207
 208    {PIPE_FORMAT_R5SG5SB6U_NORM, PACKED_1x16(0xffff), PACKED_1x16(0x0000), { 0.0,  0.0, 0.0, 1.0}},
 209    {PIPE_FORMAT_R5SG5SB6U_NORM, PACKED_1x16(0xffff), PACKED_1x16(0x000f), { 1.0,  0.0, 0.0, 1.0}},
 210    {PIPE_FORMAT_R5SG5SB6U_NORM, PACKED_1x16(0xffff), PACKED_1x16(0x0011), {-1.0,  0.0, 0.0, 1.0}},
 211    {PIPE_FORMAT_R5SG5SB6U_NORM, PACKED_1x16(0xffff), PACKED_1x16(0x01e0), { 0.0,  1.0, 0.0, 1.0}},
 212    {PIPE_FORMAT_R5SG5SB6U_NORM, PACKED_1x16(0xffff), PACKED_1x16(0x0220), { 0.0, -1.0, 0.0, 1.0}},
 213    {PIPE_FORMAT_R5SG5SB6U_NORM, PACKED_1x16(0xffff), PACKED_1x16(0xfc00), { 0.0,  0.0, 1.0, 1.0}},
 214
 215    /*
 216     * TODO: Depth-stencil formats
 217     */
 218
 219    /*
 220     * TODO: YUV formats
 221     */
 222
 223    /*
 224     * TODO: Compressed formats
 225     */
 226
 227    /*
 228     * D3D10-like formats
 229     */
 230
 231    {PIPE_FORMAT_R8_UNORM, PACKED_1x8(0xff), PACKED_1x8(0x00), {0.0, 0.0, 0.0, 1.0}},
 232    {PIPE_FORMAT_R8_UNORM, PACKED_1x8(0xff), PACKED_1x8(0xff), {1.0, 0.0, 0.0, 1.0}},
 233
 234    {PIPE_FORMAT_R8G8_UNORM, PACKED_2x8(0xff, 0xff), PACKED_2x8(0x00, 0x00), {0.0, 0.0, 0.0, 1.0}},
 235    {PIPE_FORMAT_R8G8_UNORM, PACKED_2x8(0xff, 0xff), PACKED_2x8(0xff, 0x00), {1.0, 0.0, 0.0, 1.0}},
 236    {PIPE_FORMAT_R8G8_UNORM, PACKED_2x8(0xff, 0xff), PACKED_2x8(0x00, 0xff), {0.0, 1.0, 0.0, 1.0}},
 237    {PIPE_FORMAT_R8G8_UNORM, PACKED_2x8(0xff, 0xff), PACKED_2x8(0xff, 0xff), {1.0, 1.0, 0.0, 1.0}},
 238
 239    {PIPE_FORMAT_R8G8B8_UNORM, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0x00, 0x00), {0.0, 0.0, 0.0, 1.0}},
 240    {PIPE_FORMAT_R8G8B8_UNORM, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0xff, 0x00, 0x00), {1.0, 0.0, 0.0, 1.0}},
 241    {PIPE_FORMAT_R8G8B8_UNORM, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0xff, 0x00), {0.0, 1.0, 0.0, 1.0}},
 242    {PIPE_FORMAT_R8G8B8_UNORM, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0x00, 0xff), {0.0, 0.0, 1.0, 1.0}},
 243    {PIPE_FORMAT_R8G8B8_UNORM, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0xff, 0xff, 0xff), {1.0, 1.0, 1.0, 1.0}},
 244
 245    {PIPE_FORMAT_R8G8B8A8_UNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x00, 0x00), {0.0, 0.0, 0.0, 0.0}},
 246    {PIPE_FORMAT_R8G8B8A8_UNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0xff, 0x00, 0x00, 0x00), {1.0, 0.0, 0.0, 0.0}},
 247    {PIPE_FORMAT_R8G8B8A8_UNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0xff, 0x00, 0x00), {0.0, 1.0, 0.0, 0.0}},
 248    {PIPE_FORMAT_R8G8B8A8_UNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0xff, 0x00), {0.0, 0.0, 1.0, 0.0}},
 249    {PIPE_FORMAT_R8G8B8A8_UNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x00, 0xff), {0.0, 0.0, 0.0, 1.0}},
 250    {PIPE_FORMAT_R8G8B8A8_UNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0xff, 0xff, 0xff, 0xff), {1.0, 1.0, 1.0, 1.0}},
 251
 252    {PIPE_FORMAT_R8_USCALED, PACKED_1x8(0xff), PACKED_1x8(0x00), {  0.0,   0.0,   0.0, 1.0}},
 253    {PIPE_FORMAT_R8_USCALED, PACKED_1x8(0xff), PACKED_1x8(0xff), {255.0,   0.0,   0.0, 1.0}},
 254
 255    {PIPE_FORMAT_R8G8_USCALED, PACKED_2x8(0xff, 0xff), PACKED_2x8(0x00, 0x00), {  0.0,   0.0,   0.0, 1.0}},
 256    {PIPE_FORMAT_R8G8_USCALED, PACKED_2x8(0xff, 0xff), PACKED_2x8(0xff, 0x00), {255.0,   0.0,   0.0, 1.0}},
 257    {PIPE_FORMAT_R8G8_USCALED, PACKED_2x8(0xff, 0xff), PACKED_2x8(0x00, 0xff), {  0.0, 255.0,   0.0, 1.0}},
 258    {PIPE_FORMAT_R8G8_USCALED, PACKED_2x8(0xff, 0xff), PACKED_2x8(0xff, 0xff), {255.0, 255.0,   0.0, 1.0}},
 259
 260    {PIPE_FORMAT_R8G8B8_USCALED, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0x00, 0x00), {  0.0,   0.0,   0.0, 1.0}},
 261    {PIPE_FORMAT_R8G8B8_USCALED, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0xff, 0x00, 0x00), {255.0,   0.0,   0.0, 1.0}},
 262    {PIPE_FORMAT_R8G8B8_USCALED, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0xff, 0x00), {  0.0, 255.0,   0.0, 1.0}},
 263    {PIPE_FORMAT_R8G8B8_USCALED, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0x00, 0xff), {  0.0,   0.0, 255.0, 1.0}},
 264    {PIPE_FORMAT_R8G8B8_USCALED, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0xff, 0xff, 0xff), {255.0, 255.0, 255.0, 1.0}},
 265
 266    {PIPE_FORMAT_R8G8B8A8_USCALED, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x00, 0x00), {  0.0,   0.0,   0.0,   0.0}},
 267    {PIPE_FORMAT_R8G8B8A8_USCALED, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0xff, 0x00, 0x00, 0x00), {255.0,   0.0,   0.0,   0.0}},
 268    {PIPE_FORMAT_R8G8B8A8_USCALED, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0xff, 0x00, 0x00), {  0.0, 255.0,   0.0,   0.0}},
 269    {PIPE_FORMAT_R8G8B8A8_USCALED, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0xff, 0x00), {  0.0,   0.0, 255.0,   0.0}},
 270    {PIPE_FORMAT_R8G8B8A8_USCALED, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x00, 0xff), {  0.0,   0.0,   0.0, 255.0}},
 271    {PIPE_FORMAT_R8G8B8A8_USCALED, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0xff, 0xff, 0xff, 0xff), {255.0, 255.0, 255.0, 255.0}},
 272
 273    {PIPE_FORMAT_R8_SNORM, PACKED_1x8(0xff), PACKED_1x8(0x00), { 0.0,  0.0,  0.0,  1.0}},
 274    {PIPE_FORMAT_R8_SNORM, PACKED_1x8(0xff), PACKED_1x8(0x7f), { 1.0,  0.0,  0.0,  1.0}},
 275    {PIPE_FORMAT_R8_SNORM, PACKED_1x8(0xff), PACKED_1x8(0x81), {-1.0,  0.0,  0.0,  1.0}},
 276
 277    {PIPE_FORMAT_R8G8_SNORM, PACKED_2x8(0xff, 0xff), PACKED_2x8(0x00, 0x00), { 0.0,  0.0,  0.0,  1.0}},
 278    {PIPE_FORMAT_R8G8_SNORM, PACKED_2x8(0xff, 0xff), PACKED_2x8(0x7f, 0x00), { 1.0,  0.0,  0.0,  1.0}},
 279    {PIPE_FORMAT_R8G8_SNORM, PACKED_2x8(0xff, 0xff), PACKED_2x8(0x81, 0x00), {-1.0,  0.0,  0.0,  1.0}},
 280    {PIPE_FORMAT_R8G8_SNORM, PACKED_2x8(0xff, 0xff), PACKED_2x8(0x00, 0x7f), { 0.0,  1.0,  0.0,  1.0}},
 281    {PIPE_FORMAT_R8G8_SNORM, PACKED_2x8(0xff, 0xff), PACKED_2x8(0x00, 0x81), { 0.0, -1.0,  0.0,  1.0}},
 282
 283    {PIPE_FORMAT_R8G8B8_SNORM, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0x00, 0x00), { 0.0,  0.0,  0.0,  1.0}},
 284    {PIPE_FORMAT_R8G8B8_SNORM, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x7f, 0x00, 0x00), { 1.0,  0.0,  0.0,  1.0}},
 285    {PIPE_FORMAT_R8G8B8_SNORM, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x81, 0x00, 0x00), {-1.0,  0.0,  0.0,  1.0}},
 286    {PIPE_FORMAT_R8G8B8_SNORM, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0x7f, 0x00), { 0.0,  1.0,  0.0,  1.0}},
 287    {PIPE_FORMAT_R8G8B8_SNORM, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0x81, 0x00), { 0.0, -1.0,  0.0,  1.0}},
 288    {PIPE_FORMAT_R8G8B8_SNORM, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0x00, 0x7f), { 0.0,  0.0,  1.0,  1.0}},
 289    {PIPE_FORMAT_R8G8B8_SNORM, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0x00, 0x81), { 0.0,  0.0, -1.0,  1.0}},
 290
 291    {PIPE_FORMAT_R8G8B8A8_SNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x00, 0x00), { 0.0,  0.0,  0.0,  0.0}},
 292    {PIPE_FORMAT_R8G8B8A8_SNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x7f, 0x00, 0x00, 0x00), { 1.0,  0.0,  0.0,  0.0}},
 293    {PIPE_FORMAT_R8G8B8A8_SNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x81, 0x00, 0x00, 0x00), {-1.0,  0.0,  0.0,  0.0}},
 294    {PIPE_FORMAT_R8G8B8A8_SNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x7f, 0x00, 0x00), { 0.0,  1.0,  0.0,  0.0}},
 295    {PIPE_FORMAT_R8G8B8A8_SNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x81, 0x00, 0x00), { 0.0, -1.0,  0.0,  0.0}},
 296    {PIPE_FORMAT_R8G8B8A8_SNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x7f, 0x00), { 0.0,  0.0,  1.0,  0.0}},
 297    {PIPE_FORMAT_R8G8B8A8_SNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x81, 0x00), { 0.0,  0.0, -1.0,  0.0}},
 298    {PIPE_FORMAT_R8G8B8A8_SNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x00, 0x7f), { 0.0,  0.0,  0.0,  1.0}},
 299    {PIPE_FORMAT_R8G8B8A8_SNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x00, 0x81), { 0.0,  0.0,  0.0, -1.0}},
 300
 301    {PIPE_FORMAT_R8_SSCALED, PACKED_1x8(0xff), PACKED_1x8(0x00), {   0.0,    0.0,    0.0, 1.0}},
 302    {PIPE_FORMAT_R8_SSCALED, PACKED_1x8(0xff), PACKED_1x8(0x7f), { 127.0,    0.0,    0.0, 1.0}},
 303    {PIPE_FORMAT_R8_SSCALED, PACKED_1x8(0xff), PACKED_1x8(0x80), {-128.0,    0.0,    0.0, 1.0}},
 304
 305    {PIPE_FORMAT_R8G8_SSCALED, PACKED_2x8(0xff, 0xff), PACKED_2x8(0x00, 0x00), {   0.0,    0.0,    0.0, 1.0}},
 306    {PIPE_FORMAT_R8G8_SSCALED, PACKED_2x8(0xff, 0xff), PACKED_2x8(0x7f, 0x00), { 127.0,    0.0,    0.0, 1.0}},
 307    {PIPE_FORMAT_R8G8_SSCALED, PACKED_2x8(0xff, 0xff), PACKED_2x8(0x80, 0x00), {-128.0,    0.0,    0.0, 1.0}},
 308    {PIPE_FORMAT_R8G8_SSCALED, PACKED_2x8(0xff, 0xff), PACKED_2x8(0x00, 0x7f), {   0.0,  127.0,    0.0, 1.0}},
 309    {PIPE_FORMAT_R8G8_SSCALED, PACKED_2x8(0xff, 0xff), PACKED_2x8(0x00, 0x80), {   0.0, -128.0,    0.0, 1.0}},
 310
 311    {PIPE_FORMAT_R8G8B8_SSCALED, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0x00, 0x00), {   0.0,    0.0,    0.0, 1.0}},
 312    {PIPE_FORMAT_R8G8B8_SSCALED, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x7f, 0x00, 0x00), { 127.0,    0.0,    0.0, 1.0}},
 313    {PIPE_FORMAT_R8G8B8_SSCALED, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x80, 0x00, 0x00), {-128.0,    0.0,    0.0, 1.0}},
 314    {PIPE_FORMAT_R8G8B8_SSCALED, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0x7f, 0x00), {   0.0,  127.0,    0.0, 1.0}},
 315    {PIPE_FORMAT_R8G8B8_SSCALED, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0x80, 0x00), {   0.0, -128.0,    0.0, 1.0}},
 316    {PIPE_FORMAT_R8G8B8_SSCALED, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0x00, 0x7f), {   0.0,    0.0,  127.0, 1.0}},
 317    {PIPE_FORMAT_R8G8B8_SSCALED, PACKED_3x8(0xff, 0xff, 0xff), PACKED_3x8(0x00, 0x00, 0x80), {   0.0,    0.0, -128.0, 1.0}},
 318
 319    {PIPE_FORMAT_R8G8B8A8_SSCALED, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x00, 0x00), {   0.0,    0.0,    0.0,    0.0}},
 320    {PIPE_FORMAT_R8G8B8A8_SSCALED, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x7f, 0x00, 0x00, 0x00), { 127.0,    0.0,    0.0,    0.0}},
 321    {PIPE_FORMAT_R8G8B8A8_SSCALED, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x80, 0x00, 0x00, 0x00), {-128.0,    0.0,    0.0,    0.0}},
 322    {PIPE_FORMAT_R8G8B8A8_SSCALED, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x7f, 0x00, 0x00), {   0.0,  127.0,    0.0,    0.0}},
 323    {PIPE_FORMAT_R8G8B8A8_SSCALED, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x80, 0x00, 0x00), {   0.0, -128.0,    0.0,    0.0}},
 324    {PIPE_FORMAT_R8G8B8A8_SSCALED, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x7f, 0x00), {   0.0,    0.0,  127.0,    0.0}},
 325    {PIPE_FORMAT_R8G8B8A8_SSCALED, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x80, 0x00), {   0.0,    0.0, -128.0,    0.0}},
 326    {PIPE_FORMAT_R8G8B8A8_SSCALED, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x00, 0x7f), {   0.0,    0.0,    0.0,  127.0}},
 327    {PIPE_FORMAT_R8G8B8A8_SSCALED, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x00, 0x80), {   0.0,    0.0,    0.0, -128.0}},
 328 };
 329
 330
 331 static boolean
 332 test_format_unpack(const struct util_format_test_case *test)
 333 {
 334    float unpacked[4];
 335    unsigned i;
 336    boolean success;
 337
 338    util_format_unpack_4f(test->format, unpacked, test->packed);
 339
 340    success = TRUE;
 341    for (i = 0; i < 4; ++i)
 342       if (test->unpacked[i] != unpacked[i])
 343          success = FALSE;
 344
 345    if (!success) {
 346       printf("FAILED: (%f %f %f %f) obtained\n", unpacked[0], unpacked[1], unpacked[2], unpacked[3]);
 347       printf("        (%f %f %f %f) expected\n", test->unpacked[0], test->unpacked[1], test->unpacked[2], test->unpacked[3]);
 348    }
 349
 350    return success;
 351 }
 352
 353
 354 static boolean
 355 test_format_pack(const struct util_format_test_case *test)
 356 {
 357    uint8_t packed[MAX_PACKED_BYTES];
 358    unsigned i;
 359    boolean success;
 360
 361    memset(packed, 0, sizeof packed);
 362
 363    util_format_pack_4f(test->format, packed, test->unpacked[0], test->unpacked[1], test->unpacked[2], test->unpacked[3]);
 364
 365    success = TRUE;
 366    for (i = 0; i < MAX_PACKED_BYTES; ++i)
 367       if ((test->packed[i] & test->mask[i]) != (packed[i] & test->mask[i]))
 368          success = FALSE;
 369
 370    if (!success) {
 371       printf("FAILED: (%02x %02x %02x %02x) obtained\n", packed[0], packed[1], packed[2], packed[3]);
 372       printf("        (%02x %02x %02x %02x) expected\n", test->packed[0], test->packed[1], test->packed[2], test->packed[3]);
 373    }
 374
 375    return success;
 376 }
 377
 378
 379 static boolean
 380 test_all(void)
 381 {
 382    enum pipe_format last_format = PIPE_FORMAT_NONE;
 383    unsigned i;
 384    bool success = TRUE;
 385
 386    for (i = 0; i < sizeof(test_cases)/sizeof(test_cases[0]); ++i) {
 387       if (test_cases[i].format != last_format) {
 388          const struct util_format_description *format_desc;
 389          format_desc = util_format_description(test_cases[i].format);
 390          fprintf(stderr, "Testing %s ...\n", format_desc->name);
 391          last_format = test_cases[i].format;
 392       }
 393
 394       if (!test_format_pack(&test_cases[i]))
 395         success = FALSE;
 396
 397       if (!test_format_unpack(&test_cases[i]))
 398         success = FALSE;
 399    }
 400
 401    return success;
 402 }
 403
 404
 405 int main(int argc, char **argv)
 406 {
 407    boolean success;
 408
 409    success = test_all();
 410
 411    return success ? 0 : 1;
 412 }