tests/spec/arb_texture_view/getteximage-srgb.c

   1 /*
   2  * Copyright (c) 2013 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 reading back
  28  * a texture image via an sRGBA view returns invalid texel data.
  29  */
  30
  31
  32 #include "piglit-util-gl.h"
  33
  34 PIGLIT_GL_TEST_CONFIG_BEGIN
  35         config.supports_gl_compat_version = 15;
  36         config.window_visual = PIGLIT_GL_VISUAL_RGBA;
  37         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  38 PIGLIT_GL_TEST_CONFIG_END
  39
  40
  41 #define TEX_WIDTH        32
  42 #define TEX_HEIGHT       32
  43 #define TEX_NUMPIXELS    (TEX_WIDTH * TEX_HEIGHT)
  44
  45 #define RED 0xFF0000FF
  46 #define GRAY 0x7F7F7FFF
  47
  48
  49 static bool
  50 test_srgb_view(GLenum view_format)
  51 {
  52         GLenum target = GL_TEXTURE_2D;
  53         GLuint texData[TEX_NUMPIXELS];
  54         GLuint tex, view, i;
  55
  56         /* init tex data */
  57         for (i = 0; i < TEX_NUMPIXELS; ++i) {
  58                 texData[i] = RED;
  59         }
  60
  61         /* Create RGBA texture */
  62         glGenTextures(1, &tex);
  63         glActiveTextureARB(GL_TEXTURE0);
  64         glBindTexture(target, tex);
  65         glTexStorage2D(target, 1, GL_RGBA8, TEX_WIDTH, TEX_HEIGHT);
  66         glTexSubImage2D(target, 0, 0, 0, TEX_WIDTH, TEX_HEIGHT,
  67                         GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, texData);
  68
  69         /* Create sRGB texture view */
  70         glGenTextures(1, &view);
  71         glTextureView(view, target, tex, view_format, 0, 1, 0, 1);
  72         glBindTexture(target, view);
  73         glTexParameteri(target, GL_TEXTURE_BASE_LEVEL, 0);
  74
  75         /* reset texData to gray */
  76         for (i = 0; i < TEX_NUMPIXELS; ++i) {
  77                 texData[i] = GRAY;
  78         }
  79
  80         /* Get tex image data from the view */
  81         glGetTexImage(target, 0, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, texData);
  82
  83         if (texData[0] != RED) {
  84                 printf("Wrong color for %s texture view.\n",
  85                        piglit_get_gl_enum_name(view_format));
  86                 printf("Expected 0x%08x but found 0x%08x \n",
  87                        RED, texData[0]);
  88                 return false;
  89         }
  90
  91         /* should have been no errors */
  92         if (!piglit_check_gl_error(GL_NO_ERROR))
  93                 return false;
  94
  95         /* if we get here, we passed */
  96         glDeleteTextures(1, &view);
  97         glDeleteTextures(1, &tex);
  98         return true;
  99 }
 100
 101
 102 enum piglit_result
 103 piglit_display(void)
 104 {
 105         bool pass = true;
 106
 107         pass = test_srgb_view(GL_RGBA8) && pass;
 108         pass = test_srgb_view(GL_SRGB8_ALPHA8) && pass;
 109
 110         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 111 }
 112
 113
 114 void
 115 piglit_init(int argc, char *argv[])
 116 {
 117         piglit_require_extension("GL_ARB_texture_storage");
 118         piglit_require_extension("GL_ARB_texture_view");
 119         piglit_require_extension("GL_EXT_texture_sRGB");
 120 }