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/*
* Copyright (c) 2015 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
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*/
/** @file clear-max-level.c
*
* Exercise an nvidia driver bug where clearing a texture mipmap level
* fails if the level is >= GL_TEXTURE_MAX_LEVEL.
*
* BTW, glCopyImageSubData() seems to also fail if the src/dest mipmap level
* is >= GL_TEXTURE_MAX_LEVEL.
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 14;
config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
PIGLIT_GL_TEST_CONFIG_END
static bool
test_clear(GLint maxLevel)
{
const GLenum target = GL_TEXTURE_2D;
const int width = 32, height = 32, numLevels = 3;
const GLenum texInternalFormat = GL_RGBA8;
GLfloat *texData;
int i, l;
bool pass = true;
GLuint tex;
/* Create texture */
glGenTextures(1, &tex);
glBindTexture(target, tex);
glTexStorage2D(target,
numLevels,
texInternalFormat,
width,
height);
if (!piglit_check_gl_error(GL_NO_ERROR))
return false;
glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(target, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, maxLevel);
/* clear levels to unique values */
for (l = 0; l < numLevels; ++l) {
GLfloat value[4];
value[0] = value[1] = value[2] = value[3] = l * 0.125;
glClearTexImage(tex, l, GL_RGBA, GL_FLOAT, value);
if (!piglit_check_gl_error(GL_NO_ERROR))
return false;
}
/* check results */
texData = malloc(width * height * 4 * sizeof(GLfloat));
for (l = 0; l < numLevels; l++) {
float expected = l * 0.125;
float w = MAX2(1, width >> l);
float h = MAX2(1, width >> l);
glPixelStorei(GL_PACK_ALIGNMENT, 1);
glGetTexImage(target, l, GL_RGBA, GL_FLOAT, texData);
if (!piglit_check_gl_error(GL_NO_ERROR))
return false;
for (i = 0; i < 4 * w * h; i++) {
if (fabsf(texData[i] - expected) > 0.01) {
printf("Failure:\n");
printf("\tmipmap level %d, pixel %d\n",
l, i / 4);
printf("\tGL_TEXTURE_MAX_LEVEL %d\n", maxLevel);
printf("\texpected value %g, found %g\n",
expected, texData[i]);
pass = false;
break;
}
}
}
free(texData);
glDeleteTextures(1, &tex);
return pass;
}
void
piglit_init(int argc, char **argv)
{
bool pass = true;
piglit_require_extension("GL_ARB_texture_storage");
piglit_require_extension("GL_ARB_clear_texture");
pass = test_clear(0) && pass;
pass = test_clear(1) && pass;
pass = test_clear(2) && pass;
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
enum piglit_result
piglit_display(void)
{
/* unused */
return PIGLIT_FAIL;
}
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