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/*
* Copyright © 2012 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.
*/
#include "common.h"
/**
* \file bitmap.cpp
*
* This test case verifies the functionality of glBitmap() with multisample
* FBO and assumes that MSAA accuracy test already passes. glBitmap() is
* expected to work exactly the same way on multisample FBO as it works on
* single sample FBO.
*
* Test operates by drawing a test pattern in a single sample FBO which
* generates a reference image in right half of default framebuffer.
*
* Draw the same test pattern in multisample buffer and blit it in to a single
* sample FBO (resolve_fbo). Then blit the resolve_fbo to left half of window
* system framebuffer. This is the test image.
*
* Compare the two halves of default framebuffer.
*/
PIGLIT_GL_TEST_CONFIG_BEGIN
config.window_width = 512;
config.window_height = 256;
config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_ALPHA;
PIGLIT_GL_TEST_CONFIG_END
const int pattern_width = 256; const int pattern_height = 256;
static Fbo ms_fbo, resolve_fbo;
static GLint num_samples;
static GLubyte bitmap[] =
{
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xc0, 0x00, 0x00, 0x03, 0xc0, 0x00, 0x00, 0x03,
0xcf, 0xff, 0xff, 0xf3, 0xcf, 0xff, 0xff, 0xf3,
0xcc, 0x00, 0x00, 0x33, 0xcc, 0x00, 0x00, 0x33,
0xcc, 0xff, 0xff, 0x33, 0xcc, 0xff, 0xff, 0x33,
0xcc, 0xc0, 0x03, 0x33, 0xcc, 0xc0, 0x03, 0x33,
0xcc, 0xcf, 0xf3, 0x33, 0xcc, 0xcf, 0xf3, 0x33,
0xcc, 0xcf, 0xf3, 0x33, 0xcc, 0xcf, 0xf3, 0x33,
0xcc, 0xcf, 0xf3, 0x33, 0xcc, 0xcf, 0xf3, 0x33,
0xcc, 0xcf, 0xf3, 0x33, 0xcc, 0xcf, 0xf3, 0x33,
0xcc, 0xc0, 0x03, 0x33, 0xcc, 0xc0, 0x03, 0x33,
0xcc, 0xff, 0xff, 0x33, 0xcc, 0xff, 0xff, 0x33,
0xcc, 0x00, 0x00, 0x33, 0xcc, 0x00, 0x00, 0x33,
0xcf, 0xff, 0xff, 0xf3, 0xcf, 0xff, 0xff, 0xf3,
0xc0, 0x00, 0x00, 0x03, 0xc0, 0x00, 0x00, 0x03,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
};
void
draw_pattern(void)
{
const int w = 32, h = 32;
glClear(GL_COLOR_BUFFER_BIT);
glRasterPos2i (0, 0);
glColor3f(1.0, 1.0 , 1.0);
for (int i = 0; i < pattern_width / w; i++)
glBitmap(w, h, 0.0, 0.0, w, h, bitmap);
glRasterPos2i (0, pattern_height - h);
for (int i = 0; i < pattern_width / w; i++)
glBitmap(w, h, 0.0, 0.0, w, -h, bitmap);
}
void
print_usage_and_exit(char *prog_name)
{
printf("Usage: %s <num_samples>\n", prog_name);
piglit_report_result(PIGLIT_FAIL);
}
bool
test_multisample_bitmap()
{
bool result = true;
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, ms_fbo.handle);
draw_pattern();
/* Blit ms_fbo to resolve_fbo to resolve multisample buffer */
glBindFramebuffer(GL_READ_FRAMEBUFFER, ms_fbo.handle);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, resolve_fbo.handle);
glBlitFramebuffer(0, 0, pattern_width, pattern_height,
0, 0, pattern_width, pattern_height,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
/* Blit resolve_fbo to the left half of window system framebuffer.
* This is the test image.
*/
glBindFramebuffer(GL_READ_FRAMEBUFFER, resolve_fbo.handle);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
glBlitFramebuffer(0, 0, pattern_width, pattern_height,
0, 0, pattern_width, pattern_height,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
/* Check that the left and right halves of the screen match */
glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
result = piglit_probe_rect_halves_equal_rgba(0, 0, piglit_width,
piglit_height)
&& result;
result = piglit_check_gl_error(GL_NO_ERROR) && result;
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
return result;
}
void
piglit_init(int argc, char **argv)
{
if (argc < 2)
print_usage_and_exit(argv[0]);
{
char *endptr = NULL;
num_samples = strtol(argv[1], &endptr, 0);
if (endptr != argv[1] + strlen(argv[1]))
print_usage_and_exit(argv[0]);
}
piglit_require_gl_version(30);
piglit_ortho_projection(pattern_width, pattern_height, GL_TRUE);
/* Skip the test if num_samples > GL_MAX_SAMPLES */
GLint max_samples;
glGetIntegerv(GL_MAX_SAMPLES, &max_samples);
if (num_samples > max_samples)
piglit_report_result(PIGLIT_SKIP);
ms_fbo.setup(FboConfig(num_samples, pattern_width, pattern_height));
resolve_fbo.setup(FboConfig(0, pattern_width, pattern_height));
}
enum piglit_result
piglit_display()
{
bool pass = true;
glClearColor(0.0, 0.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
/* Draw test pattern in single sample resolve_fbo */
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, resolve_fbo.handle);
resolve_fbo.set_viewport();
draw_pattern();
/* Blit resolve_fbo to the right half of window system framebuffer. This
* is a reference image.
*/
glBindFramebuffer(GL_READ_FRAMEBUFFER, resolve_fbo.handle);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
glBlitFramebuffer(0, 0, pattern_width, pattern_height,
pattern_width, 0, 2 * pattern_width, pattern_height,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
/* Test drawing bitmap in multisample FBO */
pass = test_multisample_bitmap() && pass;
if (!piglit_automatic)
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
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