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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 accuracy.c
*
* Verify the accuracy of multisample antialiasing.
*
* This test utilizes the functions defined in common.cpp to verfify the
* accuracy of MSAA.
*
* The test also accepts the following flags:
*
* - "small": Causes the MSAA image to be renedered in extremely tiny
* (16x16) tiles that are then stitched together. This verifies
* that MSAA works properly on very small buffers (a critical corner
* case on i965).
*
* - "depthstencil": Causes the framebuffers to use a combined
* depth/stencil buffer (as opposed to separate depth and stencil
* buffers). On some implementations (e.g. the nVidia proprietary
* driver for Linux) this is necessary for framebuffer completeness.
* On others (e.g. i965), this is an important corner case to test.
*/
PIGLIT_GL_TEST_MAIN(
512 /*window_width*/,
256 /*window_height*/,
PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_ALPHA)
const int pattern_width = 256; const int pattern_height = 256;
const int supersample_factor = 16;
Test *test = NULL;
void
print_usage_and_exit(char *prog_name)
{
printf("Usage: %s <num_samples> <test_type> [options]\n"
" where <test_type> is one of:\n"
" color: test downsampling of color buffer\n"
" srgb: test downsampling of srgb color buffer\n"
" stencil_draw: test drawing using MSAA stencil buffer\n"
" stencil_resolve: test resolve of MSAA stencil buffer\n"
" depth_draw: test drawing using MSAA depth buffer\n"
" depth_resolve: test resolve of MSAA depth buffer\n"
"Available options:\n"
" small: use a very small (16x16) MSAA buffer\n"
" depthstencil: use a combined depth/stencil buffer\n",
prog_name);
piglit_report_result(PIGLIT_FAIL);
}
void
piglit_init(int argc, char **argv)
{
GLint max_samples;
int i, num_samples;
bool small = false;
bool combine_depth_stencil = false;
if (argc < 3)
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]);
}
for (i = 3; i < argc; ++i) {
if (strcmp(argv[i], "small") == 0) {
small = true;
} else if (strcmp(argv[i], "depthstencil") == 0) {
combine_depth_stencil = true;
} else {
print_usage_and_exit(argv[0]);
}
}
piglit_require_gl_version(30);
piglit_require_GLSL_version(130);
/* Skip the test if num_samples > GL_MAX_SAMPLES */
glGetIntegerv(GL_MAX_SAMPLES, &max_samples);
if (num_samples > max_samples)
piglit_report_result(PIGLIT_SKIP);
test_type_enum test_type;
if (strcmp(argv[2], "color") == 0) {
test_type = TEST_TYPE_COLOR;
} else if (strcmp(argv[2], "srgb") == 0) {
test_type = TEST_TYPE_SRGB;
} else if (strcmp(argv[2], "stencil_draw") == 0) {
test_type = TEST_TYPE_STENCIL_DRAW;
} else if (strcmp(argv[2], "stencil_resolve") == 0) {
test_type = TEST_TYPE_STENCIL_RESOLVE;
} else if (strcmp(argv[2], "depth_draw") == 0) {
test_type = TEST_TYPE_DEPTH_DRAW;
} else if (strcmp(argv[2], "depth_resolve") == 0) {
test_type = TEST_TYPE_DEPTH_RESOLVE;
} else {
print_usage_and_exit(argv[0]);
}
test = create_test(test_type, num_samples, small,
combine_depth_stencil,
pattern_width, pattern_height, supersample_factor);
}
enum piglit_result
piglit_display()
{
enum piglit_result result = test->run() ? PIGLIT_PASS : PIGLIT_FAIL;
piglit_present_results();
return result;
}
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