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/*
* Copyright © 2015 Intel Corporation
* Copyright © 2019 Advanced Micro Devices, 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 generatetexturemipmaps.c
* Verify the side-effect-free operation of glGenerateTextureMipmapEXT and
* glGenerateMultiTexMipmapEXT (based on the ARB version of the test).
*
* After calling glGenerateTextureMipmap, there are 3 things that need to be
* verified:
*
* 1. The texture bindings have not been modified.
*
* 2. Textures not passed to glGenerateTextureMipmapEXT or
* glGenerateMultiTexMipmapEXT have not had their data modified.
*
* 3. The texture that was passed to glGenerateTextureMipmapEXT or
* glGenerateMultiTexMipmapEXT has the correct data in its mipmaps.
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_core_version = 31;
config.supports_gl_compat_version = 20;
config.window_visual = PIGLIT_GL_VISUAL_RGBA |
PIGLIT_GL_VISUAL_DOUBLE;
config.khr_no_error_support = PIGLIT_NO_ERRORS;
PIGLIT_GL_TEST_CONFIG_END
/* 2x2 block of red pixels. */
static const float red[2 * 2 * 4] = {
1.0, 0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0,
1.0, 0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0
};
/* 4x4 block of green pixels. */
static const float green[4 * 4 * 4] = {
0.0, 1.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0,
0.0, 1.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0,
0.0, 1.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0,
0.0, 1.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0,
0.0, 1.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0,
0.0, 1.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0,
0.0, 1.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0,
0.0, 1.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0
};
/* 4x4 block of blue pixels. */
static const float blue[4 * 4 * 4] = {
0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0, 1.0,
0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0, 1.0,
0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0, 1.0,
0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0, 1.0,
0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0, 1.0,
0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0, 1.0,
0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0, 1.0,
0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0, 1.0
};
void
piglit_init(int argc, char **argv)
{
GLuint tex[3];
GLuint bound;
bool pass = true;
unsigned i;
piglit_require_extension("GL_EXT_direct_state_access");
/* Create two textures. Populate both with full mipmap stacks.
* Ensure that the data for levels > 0 is not the data that would be
* generated by glGenerateMipmap or glGenerateTextureMipmap.
*/
glGenTextures(ARRAY_SIZE(tex), tex);
for (i = 0; i < ARRAY_SIZE(tex); i++) {
const float *const base_color = (i == 0) ? blue : green;
glActiveTexture(GL_TEXTURE0 + i);
glBindTexture(GL_TEXTURE_2D, tex[i]);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 4, 4, 0, GL_RGBA,
GL_FLOAT, base_color);
glTexImage2D(GL_TEXTURE_2D, 1, GL_RGBA8, 2, 2, 0, GL_RGBA,
GL_FLOAT, red);
glTexImage2D(GL_TEXTURE_2D, 2, GL_RGBA8, 1, 1, 0, GL_RGBA,
GL_FLOAT, red);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
}
/* Generate the mipmap stack for the texture that is not currently
* bound to unit 0 while unit 0 is the active unit.
*/
glActiveTexture(GL_TEXTURE0);
glGenerateTextureMipmapEXT(tex[1], GL_TEXTURE_2D);
glGenerateMultiTexMipmapEXT(GL_TEXTURE2, GL_TEXTURE_2D);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
/* Verify that the correct textures are still bound to the correct
* texture units.
*/
for (i = 0; i < ARRAY_SIZE(tex); i++) {
glActiveTexture(GL_TEXTURE0 + i);
glGetIntegerv(GL_TEXTURE_BINDING_2D, (GLint *) &bound);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
if (bound != tex[i]) {
fprintf(stderr,
"Wrong texture bound to unit %u. Got %d, "
"but expected %d (other texture is %d).\n",
i, bound, tex[i], tex[1 - i]);
pass = false;
}
}
/* Verify that each texture has the correct data in levels > 0.
*
* For the texture bound to unit 0 (which was not passed to
* glGenerateTextureMipmapEXT nor glGenerateMultiTexMipmapEXT),
* this should be the original red color.
*
* For the texture bound to unit 1 (which was passed to
* glGenerateTextureMipmapEXT) and the one bound to unit 2 (which
* was passed to glGenerateMultiTexMipmapEXT) this should be green
* generated from the base level.
*
*/
for (i = 0; i < ARRAY_SIZE(tex); i++) {
const float *const level_color = (i == 0) ? red : green;
glActiveTexture(GL_TEXTURE0 + i);
printf("Check level 1 of texture %u...\n", i);
pass = piglit_probe_texel_rect_rgba(GL_TEXTURE_2D, 1,
0, 0, 2, 2,
level_color) && pass;
printf("Check level 2 of texture %u...\n", i);
pass = piglit_probe_texel_rect_rgba(GL_TEXTURE_2D, 2,
0, 0, 1, 1,
level_color) && pass;
}
/* The EXT_direct_state_access spec says:
*
* If the texture parameter is for a used name and that
* named texture object has a different target than the specified target
* parameter, the INVALID_OPERATION error is generated.
*/
glGenerateTextureMipmapEXT(tex[1], GL_TEXTURE_3D);
pass = piglit_check_gl_error(GL_INVALID_OPERATION) && pass;
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
enum piglit_result
piglit_display(void)
{
return PIGLIT_FAIL;
}
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