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/*
* Copyright (c) 2014 VMware, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, and/or sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NON-INFRINGEMENT. IN NO EVENT SHALL VMWARE AND/OR THEIR SUPPLIERS
* 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.
*/
/**
* This test exercises an NVIDIA driver bug where copying from
* a sRGBA texture to another RGBA texture using ARB_copy_image
* followed by a GetTexImage() on the RGBA texture results in
* swapping of red and blue channels.
*
* Known to be
* -- Present in : Nvidia GTX 650, driver - 319.32
* -- Fixed in :
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 15;
config.window_visual = PIGLIT_GL_VISUAL_RGBA;
config.khr_no_error_support = PIGLIT_NO_ERRORS;
PIGLIT_GL_TEST_CONFIG_END
#define TEX_WIDTH 32
#define TEX_HEIGHT 32
#define TEX_NUMPIXELS (TEX_WIDTH * TEX_HEIGHT)
#define RED 0xFF0000FF
#define GRAY 0x7F7F7FFF
static bool
test_srgb_copy(void)
{
GLenum target = GL_TEXTURE_2D;
GLuint texData[TEX_NUMPIXELS];
GLuint texRGBA, texSRGBA, i;
/* init tex data */
for (i = 0; i < TEX_NUMPIXELS; ++i) {
texData[i] = RED;
}
/* Create sRGBA texture */
glGenTextures(1, &texSRGBA);
glActiveTextureARB(GL_TEXTURE0);
glBindTexture(target, texSRGBA);
glTexStorage2D(target, 1, GL_SRGB8_ALPHA8, TEX_WIDTH, TEX_HEIGHT);
glTexSubImage2D(target, 0, 0, 0, TEX_WIDTH, TEX_HEIGHT,
GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, texData);
/* Create RGB texture */
glGenTextures(1, &texRGBA);
glBindTexture(target, texRGBA);
glTexStorage2D(target, 1, GL_RGBA8, TEX_WIDTH, TEX_HEIGHT);
/* Copy data from sRGBA to RGBA texture using arb_copy_image */
glCopyImageSubData(texSRGBA, target, 0, 0, 0, 0,
texRGBA, target, 0, 0, 0, 0,
TEX_WIDTH, TEX_HEIGHT, 1);
/* reset texData to gray */
for (i = 0; i < TEX_NUMPIXELS; ++i) {
texData[i] = GRAY;
}
/* Get tex image data from the RGBA texture */
glGetTexImage(target, 0, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, texData);
if (texData[0] != RED) {
printf("Expected 0x%08x but found 0x%08x \n",
RED, texData[0]);
/* clean up */
glDeleteTextures(1, &texSRGBA);
glDeleteTextures(1, &texRGBA);
return false;
}
/* should have been no errors */
if (!piglit_check_gl_error(GL_NO_ERROR))
return false;
/* if we get here, we passed */
glDeleteTextures(1, &texSRGBA);
glDeleteTextures(1, &texRGBA);
return true;
}
enum piglit_result
piglit_display(void)
{
bool pass = test_srgb_copy();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
void
piglit_init(int argc, char *argv[])
{
piglit_require_extension("GL_ARB_copy_image");
piglit_require_extension("GL_ARB_texture_storage");
piglit_require_extension("GL_EXT_texture_sRGB");
}
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