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/*
* Copyright © 2015 Intel Corporation
*
* 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 GenerateMipmap-versus-READ_FRAMEBUFFER.c
* Verify that GL_READ_FRAMEBUFFER_BINDING and GL_DRAW_FRAMEBUFFER_BINDING are
* correct after calling glGenerateMipmap.
*
* Mesa's meta path for glGenerateMipmap had a problem that it assumed the two
* bindings were the same. As a result, one of them was incorrect after
* returning from _mesa_meta_GenerateMipmap.
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 10;
config.window_visual = PIGLIT_GL_VISUAL_RGB;
config.khr_no_error_support = PIGLIT_NO_ERRORS;
PIGLIT_GL_TEST_CONFIG_END
static const GLuint texels[16] = {
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0
};
void
piglit_init(int argc, char **argv)
{
GLuint fbos[2];
GLuint texture;
GLuint draw_binding;
GLuint read_binding;
bool pass = true;
if (piglit_get_gl_version() >= 30 ||
piglit_is_extension_supported("GL_ARB_framebuffer_object")) {
glGenFramebuffers(2, fbos);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbos[0]);
glBindFramebuffer(GL_READ_FRAMEBUFFER, fbos[1]);
} else if (piglit_is_extension_supported("GL_EXT_framebuffer_object") &&
piglit_is_extension_supported("GL_EXT_framebuffer_blit")) {
glGenFramebuffersEXT(2, fbos);
glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER, fbos[0]);
glBindFramebufferEXT(GL_READ_FRAMEBUFFER, fbos[1]);
} else {
fprintf(stderr,
"Either OpenGL 3.0, or GL_ARB_framebuffer_object, or "
"GL_EXT_framebuffer_object and GL_EXT_framebuffer_blit "
"is requred.\n");
piglit_report_result(PIGLIT_SKIP);
}
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 4, 4, 0,
GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, texels);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
glGenerateMipmap(GL_TEXTURE_2D);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, (GLint *) &draw_binding);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
glGetIntegerv(GL_READ_FRAMEBUFFER_BINDING, (GLint *) &read_binding);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
if (draw_binding != fbos[0]) {
fprintf(stderr, "GL_DRAW_FRAMEBUFFER_BINDING munged. "
"Got %u, expected %u.\n",
draw_binding, fbos[0]);
pass = false;
}
if (read_binding != fbos[1]) {
fprintf(stderr, "GL_READ_FRAMEBUFFER_BINDING munged. "
"Got %u, expected %u.\n",
read_binding, fbos[1]);
pass = false;
}
if (piglit_get_gl_version() >= 30 ||
piglit_is_extension_supported("GL_ARB_framebuffer_object")) {
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
glDeleteFramebuffers(2, fbos);
} else {
glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER, 0);
glBindFramebufferEXT(GL_READ_FRAMEBUFFER, 0);
glDeleteFramebuffersEXT(2, fbos);
}
glBindTexture(GL_TEXTURE_2D, 0);
glDeleteTextures(1, &texture);
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
enum piglit_result
piglit_display()
{
/* Unreachable */
return PIGLIT_FAIL;
}
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