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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 GL_ARB_copy_buffer
*
* Brian Paul
* Jan 2012
*/
#include "piglit-util-gl-common.h"
PIGLIT_GL_TEST_MAIN(
100 /*window_width*/,
100 /*window_height*/,
GLUT_RGB | GLUT_DOUBLE)
static bool
test_copy(void)
{
#define BUF_SIZE 600 /* multiple of 100 */
GLuint bufs[2];
char data[BUF_SIZE], *p;
int i;
int chunk = 100;
bool pass = true;
assert(BUF_SIZE % chunk == 0);
glGenBuffers(2, bufs);
for (i = 0; i < BUF_SIZE; i++)
data[i] = rand() % 256;
glBindBufferARB(GL_COPY_READ_BUFFER, bufs[0]);
glBufferData(GL_COPY_READ_BUFFER, BUF_SIZE, data, GL_STATIC_DRAW);
glBindBufferARB(GL_COPY_WRITE_BUFFER, bufs[1]);
glBufferData(GL_COPY_WRITE_BUFFER, BUF_SIZE, NULL, GL_DYNAMIC_COPY);
/* copy from bufs[0] to bufs[1] in chunks */
for (i = 0; i < BUF_SIZE / chunk; i++) {
int srcOffset = i * chunk;
int dstOffset = i * chunk;
glCopyBufferSubData(GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER,
srcOffset, dstOffset, chunk);
}
/* verify dest buffer */
p = glMapBuffer(GL_COPY_WRITE_BUFFER, GL_READ_ONLY);
for (i = 0; i < BUF_SIZE; i++) {
if (p[i] != data[i]) {
printf("expected %d, found %d at location %d\n",
data[i], p[i], i);
pass = false;
break;
}
}
glUnmapBuffer(GL_COPY_WRITE_BUFFER);
glDeleteBuffers(2, bufs);
return pass;
}
enum piglit_result
piglit_display(void)
{
/* should never get here */
return PIGLIT_FAIL;
}
void
piglit_init(int argc, char **argv)
{
piglit_require_extension("GL_ARB_copy_buffer");
if (test_copy())
piglit_report_result(PIGLIT_PASS);
else
piglit_report_result(PIGLIT_FAIL);
}
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