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/*
* Copyright © 2012 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.
*/
/**
* Test that VBO memory is initialized to a constant value and not stale
* data that may show previous contents of VRAM.
*
* To pass this test an OpenGL implementation should initialize the
* contents of the new buffer to some fixed value (like all zeros).
* But since that's not spec'd by OpenGL, we only return WARN instead of
* FAIL if that's not the case.
*
* Brian Paul
* June 2012
*/
#include "piglit-util-gl-common.h"
PIGLIT_GL_TEST_MAIN(
100 /*window_width*/,
100 /*window_height*/,
PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE)
enum piglit_result
piglit_display(void)
{
GLsizei size = 10 * 1000 * 1000;
GLuint buf;
GLubyte *tmp = malloc(size);
int i;
bool pass = true;
glGenBuffers(1, &buf);
glBindBuffer(GL_ARRAY_BUFFER, buf);
glBufferData(GL_ARRAY_BUFFER, size, NULL, GL_STATIC_DRAW);
glGetBufferSubData(GL_ARRAY_BUFFER, 0, size, tmp);
/* check if all same values */
for (i = 1; i < size; i++) {
if (tmp[i] != tmp[0]) {
pass = false;
break;
}
}
glDeleteBuffers(1, &buf);
return pass ? PIGLIT_PASS : PIGLIT_WARN;
}
void
piglit_init(int argc, char **argv)
{
piglit_require_extension("GL_ARB_vertex_buffer_object");
}
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