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/*
* Copyright © 2010, 2011 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 fbo-incomplete-texture-04.c
* Verify that using a nonexistent texture level is not an error
*
* This is based on a discussion at the January 2011 Khronos face-to-face
* meeting. The intention is that calling \c glFramebufferTexture with a
* level that does not exist in the texture should not generate an error.
* However, the FBO will be incomplete until the texture level is created.
*
* \author Ian Romanick <ian.d.romanick@intel.com>
*/
#include "piglit-util-gl-common.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.window_width = 30;
config.window_height = 30;
config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
PIGLIT_GL_TEST_CONFIG_END
enum piglit_result
piglit_display(void)
{
return PIGLIT_FAIL;
}
void
piglit_init(int argc, char **argv)
{
GLuint tex;
GLuint fb;
GLenum status;
const float color[] = {1.0,0.0,0.0,1.0};
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
piglit_require_extension("GL_ARB_framebuffer_object");
/* This texture will be incomplete because a mipmap filter mode is used,
* but the mipmap stack is incomplete.
*/
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_2D, tex);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 32, 32, 0,
GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glGenFramebuffers(1, &fb);
glBindFramebuffer(GL_FRAMEBUFFER, fb);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D, tex, 2);
if (!piglit_check_gl_error(GL_NO_ERROR))
piglit_report_result(PIGLIT_FAIL);
/* Since texture level 2 does not exist, the FBO should be incomplete.
*/
status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if (status == GL_FRAMEBUFFER_COMPLETE) {
printf("FBO erroneously complete\n");
piglit_report_result(PIGLIT_FAIL);
} else if (status != GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT) {
fprintf(stderr, "FBO incomplete for incorrect reason 0x%04x "
"(should be 0x%04x)\n",
GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT, status);
}
/* Create level 1 and level 2 of the texture. Verify that the FBO
* becomes complete as a result.
*/
glTexImage2D(GL_TEXTURE_2D, 1, GL_RGBA, 16, 16, 0,
GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glTexImage2D(GL_TEXTURE_2D, 2, GL_RGBA, 8, 8, 0,
GL_RGBA, GL_UNSIGNED_BYTE, NULL);
if (!piglit_check_gl_error(GL_NO_ERROR))
piglit_report_result(PIGLIT_FAIL);
status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if (status != GL_FRAMEBUFFER_COMPLETE) {
printf("FBO erroneously incomplete\n");
piglit_report_result(PIGLIT_FAIL);
}
glClearColor(color[0], color[1], color[2], color[3]);
glClear(GL_COLOR_BUFFER_BIT);
if (!piglit_check_gl_error(GL_NO_ERROR))
piglit_report_result(PIGLIT_FAIL);
if (!piglit_probe_texel_rect_rgba(GL_TEXTURE_2D, 2, 0, 0, 8, 8,
color)) {
fprintf(stderr, "FBO clear didn't work\n");
piglit_report_result(PIGLIT_FAIL);
}
piglit_report_result(PIGLIT_PASS);
}
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