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/*
* Copyright © 2009 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.
*
* Authors:
* Eric Anholt <eric@anholt.net>
*
*/
/** @file pbo-drawpixels.c
*
* Tests that using a PBO as the unpack buffer for glDrawPixels works correctly.
* Caught a bug with the Intel driver with the metaops drawpixels code.
*/
#include "piglit-util-gl-common.h"
PIGLIT_GL_TEST_MAIN(
100 /*window_width*/,
100 /*window_height*/,
GLUT_RGB | GLUT_DOUBLE)
enum piglit_result
piglit_display(void)
{
GLboolean pass = GL_TRUE;
static float red[] = {1.0, 0.0, 0.0, 0.0};
static float green[] = {0.0, 1.0, 0.0, 0.0};
static float blue[] = {0.0, 0.0, 1.0, 0.0};
float *pixels;
GLuint pbo;
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
glClearColor(0.5, 0.5, 0.5, 0.0);
glClear(GL_COLOR_BUFFER_BIT);
glGenBuffersARB(1, &pbo);
glBindBufferARB(GL_PIXEL_UNPACK_BUFFER, pbo);
glBufferDataARB(GL_PIXEL_UNPACK_BUFFER, 4 * 4 * sizeof(float),
NULL, GL_STREAM_DRAW_ARB);
pixels = glMapBufferARB(GL_PIXEL_UNPACK_BUFFER, GL_WRITE_ONLY_ARB);
memcpy(pixels + 0, red, sizeof(red));
memcpy(pixels + 4, green, sizeof(green));
memcpy(pixels + 8, blue, sizeof(blue));
memcpy(pixels + 12, red, sizeof(red));
glUnmapBufferARB(GL_PIXEL_UNPACK_BUFFER);
glRasterPos2i(10, 10);
glDrawPixels(2, 2, GL_RGBA, GL_FLOAT, 0);
glBindBufferARB(GL_PIXEL_UNPACK_BUFFER, 0);
glDeleteBuffersARB(1, &pbo);
pass &= piglit_probe_pixel_rgb(10, 10, red);
pass &= piglit_probe_pixel_rgb(11, 10, green);
pass &= piglit_probe_pixel_rgb(10, 11, blue);
pass &= piglit_probe_pixel_rgb(11, 11, red);
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
void
piglit_init(int argc, char **argv)
{
piglit_require_extension("GL_ARB_pixel_buffer_object");
}
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