fbo-incomplete-texture-02.c 3.77 KB
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/*
 * Copyright © 2010 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-02.c
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 * Verify that an FBO with an incomplete texture attached is complete
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 *
 * This test uses a cube map where one of the faces has not been specified.
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 * As long as the missing face isn't attached to the FBO, the FBO should not
 * be incomplete.  This test originally wanted the FBO to be incomplete.
 * However, this just verified incorrect behavior in another vendor's driver.
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 *
 * \author Ian Romanick <ian.d.romanick@intel.com>
 */

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#include "piglit-util-gl.h"
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PIGLIT_GL_TEST_CONFIG_BEGIN

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	config.supports_gl_compat_version = 10;

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	config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;

PIGLIT_GL_TEST_CONFIG_END
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enum piglit_result
piglit_display(void)
{
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	return PIGLIT_FAIL;
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}

void
piglit_init(int argc, char **argv)
{
	GLuint tex;
	GLuint fb;
	GLenum status;
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	const float color[] = {1.0,0.0,0.0,1.0};
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	piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);

	piglit_require_extension("GL_ARB_framebuffer_object");

	/* This texture will be incomplete because one of the cubemap faces
	 * has not been specified.
	 */
	glGenTextures(1, &tex);
	glBindTexture(GL_TEXTURE_CUBE_MAP, tex);
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	glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X, 0, GL_RGBA, 32, 32, 0,
		     GL_RGBA, GL_UNSIGNED_BYTE, NULL);
	glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_X, 0, GL_RGBA, 32, 32, 0,
		     GL_RGBA, GL_UNSIGNED_BYTE, NULL);
	glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Y, 0, GL_RGBA, 32, 32, 0,
		     GL_RGBA, GL_UNSIGNED_BYTE, NULL);
	glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, 0, GL_RGBA, 32, 32, 0,
		     GL_RGBA, GL_UNSIGNED_BYTE, NULL);
	glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Z, 0, GL_RGBA, 32, 32, 0,
		     GL_RGBA, GL_UNSIGNED_BYTE, NULL);
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	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_CUBE_MAP_POSITIVE_X, tex, 0);

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	if (!piglit_check_gl_error(GL_NO_ERROR))
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		piglit_report_result(PIGLIT_FAIL);
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	status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
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	if (status != GL_FRAMEBUFFER_COMPLETE) {
		fprintf(stderr, "FBO erroneously incomplete: 0x%04x\n",
			status);
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		piglit_report_result(PIGLIT_FAIL);
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	}

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	glClearColor(color[0], color[1], color[2], color[3]);
	glClear(GL_COLOR_BUFFER_BIT);

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	if (!piglit_check_gl_error(GL_NO_ERROR))
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		piglit_report_result(PIGLIT_FAIL);
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	if (!piglit_probe_texel_rect_rgba(GL_TEXTURE_CUBE_MAP_POSITIVE_X, 0,
					 0, 0, 32, 32, color)) {
		fprintf(stderr, "FBO clear didn't work\n");
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		piglit_report_result(PIGLIT_FAIL);
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	}

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	piglit_report_result(PIGLIT_PASS);
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}