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/*
* Copyright © 2014 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_EXT_packed_depth_stencil with glRead/DrawPixels
* Based on an original Glean test written by Brian Paul.
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 12;
config.window_visual = (PIGLIT_GL_VISUAL_RGBA |
PIGLIT_GL_VISUAL_DEPTH |
PIGLIT_GL_VISUAL_STENCIL);
PIGLIT_GL_TEST_CONFIG_END
static bool
test_readdrawpixels(void)
{
/*reference image data */
static const GLuint image[4] = {
0x00000000,
0x000000ff,
0xffffff00,
0xffffffff
};
GLuint readback[4];
GLuint stencilMap[2] = { 2, 2 }; /* map all stencil values to 2 */
int i;
glWindowPos2i(0, 0);
glDrawPixels(2, 2, GL_DEPTH_STENCIL_EXT,
GL_UNSIGNED_INT_24_8_EXT, image);
if (!piglit_check_gl_error(GL_NO_ERROR))
return false;
glReadPixels(0, 0, 2, 2, GL_DEPTH_STENCIL_EXT,
GL_UNSIGNED_INT_24_8_EXT, readback);
if (!piglit_check_gl_error(GL_NO_ERROR))
return false;
for (i = 0; i < 4; i++) {
if (image[i] != readback[i]) {
printf("Image returned by glReadPixels didn't match"
" the expected result (0x%x != 0x%x)",
readback[i], image[i]);
return false;
}
}
/* test depth scale/bias and stencil mapping (in a trivial way) */
glPixelTransferf(GL_DEPTH_SCALE, 0.0); /* map all depths to 1.0 */
glPixelTransferf(GL_DEPTH_BIAS, 1.0);
glPixelMapuiv(GL_PIXEL_MAP_S_TO_S, 2, stencilMap);
glPixelTransferi(GL_MAP_STENCIL, 1);
glReadPixels(0, 0, 2, 2, GL_DEPTH_STENCIL_EXT,
GL_UNSIGNED_INT_24_8_EXT, readback);
if (!piglit_check_gl_error(GL_NO_ERROR))
return false;
for (i = 0; i < 4; i++) {
if (readback[i] != 0xffffff02) {
printf("Image returned by glReadPixels didn't match"
" the expected result (0x%x != 0xffffff02)",
readback[i]);
return false;
}
}
glPixelTransferf(GL_DEPTH_SCALE, 1.0);
glPixelTransferf(GL_DEPTH_BIAS, 0.0);
glPixelTransferi(GL_MAP_STENCIL, 0);
return true;
}
void
piglit_init(int argc, char **argv)
{
bool pass = true;
piglit_require_extension("GL_EXT_packed_depth_stencil");
pass = test_readdrawpixels() && pass;
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
enum piglit_result
piglit_display(void)
{
/* unused */
return PIGLIT_FAIL;
}
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