tests/spec/arb_copy_image/srgb-copy.c

   1 /*
   2  * Copyright (c) 2014 VMware, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NON-INFRINGEMENT.  IN NO EVENT SHALL VMWARE AND/OR THEIR SUPPLIERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  */
  24
  25
  26 /**
  27  * This test exercises an NVIDIA driver bug where copying from
  28  * a sRGBA texture to another RGBA texture using ARB_copy_image
  29  * followed by a GetTexImage() on the RGBA texture results in
  30  * swapping of red and blue channels.
  31  *
  32  * Known to be
  33  *      -- Present in : Nvidia GTX 650, driver - 319.32
  34  *      -- Fixed in   :
  35  */
  36
  37
  38 #include "piglit-util-gl.h"
  39
  40 PIGLIT_GL_TEST_CONFIG_BEGIN
  41         config.supports_gl_compat_version = 15;
  42         config.window_visual = PIGLIT_GL_VISUAL_RGBA;
  43         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  44 PIGLIT_GL_TEST_CONFIG_END
  45
  46
  47 #define TEX_WIDTH        32
  48 #define TEX_HEIGHT       32
  49 #define TEX_NUMPIXELS    (TEX_WIDTH * TEX_HEIGHT)
  50
  51 #define RED 0xFF0000FF
  52 #define GRAY 0x7F7F7FFF
  53
  54
  55 static bool
  56 test_srgb_copy(void)
  57 {
  58         GLenum target = GL_TEXTURE_2D;
  59         GLuint texData[TEX_NUMPIXELS];
  60         GLuint texRGBA, texSRGBA, i;
  61
  62         /* init tex data */
  63         for (i = 0; i < TEX_NUMPIXELS; ++i) {
  64                 texData[i] = RED;
  65         }
  66
  67         /* Create sRGBA texture */
  68         glGenTextures(1, &texSRGBA);
  69         glActiveTextureARB(GL_TEXTURE0);
  70         glBindTexture(target, texSRGBA);
  71         glTexStorage2D(target, 1, GL_SRGB8_ALPHA8, TEX_WIDTH, TEX_HEIGHT);
  72         glTexSubImage2D(target, 0, 0, 0, TEX_WIDTH, TEX_HEIGHT,
  73                         GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, texData);
  74
  75         /* Create RGB texture */
  76         glGenTextures(1, &texRGBA);
  77         glBindTexture(target, texRGBA);
  78         glTexStorage2D(target, 1, GL_RGBA8, TEX_WIDTH, TEX_HEIGHT);
  79
  80         /* Copy data from sRGBA to RGBA texture using arb_copy_image */
  81         glCopyImageSubData(texSRGBA, target, 0, 0, 0, 0,
  82                            texRGBA,  target, 0, 0, 0, 0,
  83                            TEX_WIDTH, TEX_HEIGHT, 1);
  84
  85         /* reset texData to gray */
  86         for (i = 0; i < TEX_NUMPIXELS; ++i) {
  87                 texData[i] = GRAY;
  88         }
  89
  90         /* Get tex image data from the RGBA texture */
  91         glGetTexImage(target, 0, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, texData);
  92
  93         if (texData[0] != RED) {
  94                 printf("Expected 0x%08x but found 0x%08x \n",
  95                         RED, texData[0]);
  96                 /* clean up */
  97                 glDeleteTextures(1, &texSRGBA);
  98                 glDeleteTextures(1, &texRGBA);
  99                 return false;
 100         }
 101
 102         /* should have been no errors */
 103         if (!piglit_check_gl_error(GL_NO_ERROR))
 104                 return false;
 105
 106         /* if we get here, we passed */
 107         glDeleteTextures(1, &texSRGBA);
 108         glDeleteTextures(1, &texRGBA);
 109         return true;
 110 }
 111
 112
 113 enum piglit_result
 114 piglit_display(void)
 115 {
 116         bool pass = test_srgb_copy();
 117
 118         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 119 }
 120
 121
 122 void
 123 piglit_init(int argc, char *argv[])
 124 {
 125         piglit_require_extension("GL_ARB_copy_image");
 126         piglit_require_extension("GL_ARB_texture_storage");
 127         piglit_require_extension("GL_EXT_texture_sRGB");
 128 }