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/*
* Copyright © 2015 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.
*/
/**
* \file atomic-counter.c
*
* Test incrementing atomic counter in a separable program.
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_core_version = 31;
config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
PIGLIT_GL_TEST_CONFIG_END
const char *vs_source =
"#version 150\n"
"in vec4 vertex;\n"
"out gl_PerVertex { vec4 gl_Position; }; \n"
"void main() {\n"
" gl_Position = vertex;\n"
"}\n";
const char *fs_source =
"#version 150\n"
"#extension GL_ARB_shader_atomic_counters : enable\n"
"layout(binding = 0, offset = 0) uniform atomic_uint counter;\n"
"out vec4 color;\n"
"void main() {\n"
" atomicCounterIncrement(counter);\n"
" uint c = atomicCounter(counter);\n"
" color = vec4(0.0, c, 0.0, 1.0);\n"
"}\n";
GLuint buffer;
GLuint vs, fs, pipe;
enum piglit_result
piglit_display(void)
{
bool pass = true;
uint32_t *data;
glViewport(0, 0, piglit_width, piglit_height);
glClear(GL_COLOR_BUFFER_BIT);
piglit_draw_rect(-1, -1, 2, 2);
if (!piglit_check_gl_error(GL_NO_ERROR)) {
fprintf(stderr, "error while drawing\n");
piglit_report_result(PIGLIT_FAIL);
}
/* Verify that all the pixels are green. */
const float green[] = { 0.0, 1.0, 0.0};
pass = pass &&
piglit_probe_rect_rgb(0, 0, piglit_width, piglit_height, green);
if (!pass)
fprintf(stderr, "noise in rendering results\n");
piglit_present_results();
/* Check that counter was incremented. */
glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, buffer);
glMemoryBarrier(GL_BUFFER_UPDATE_BARRIER_BIT);
data = glMapBufferRange(GL_ATOMIC_COUNTER_BUFFER, 0, sizeof(uint32_t),
GL_MAP_READ_BIT);
pass = pass && *data == piglit_width * piglit_height;
if (*data != piglit_width * piglit_height)
fprintf(stderr, "atomic buffer data %u, expected %u\n",
*data, piglit_width * piglit_height);
glUnmapBuffer(GL_ATOMIC_COUNTER_BUFFER);
glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, 0);
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
void
piglit_init(int argc, char **argv)
{
bool pass = true;
uint32_t counter = 0;
piglit_require_gl_version(31);
piglit_require_GLSL_version(150);
piglit_require_extension("GL_ARB_shader_atomic_counters");
piglit_require_extension("GL_ARB_separate_shader_objects");
/* Create program pipeline. */
glGenProgramPipelines(1, &pipe);
glBindProgramPipeline(pipe);
vs = glCreateShaderProgramv(GL_VERTEX_SHADER, 1, &vs_source);
pass = piglit_link_check_status(vs) && pass;
fs = glCreateShaderProgramv(GL_FRAGMENT_SHADER, 1, &fs_source);
pass = piglit_link_check_status(fs) && pass;
glUseProgramStages(pipe, GL_VERTEX_SHADER_BIT, vs);
glUseProgramStages(pipe, GL_FRAGMENT_SHADER_BIT, fs);
glBindProgramPipeline(pipe);
glValidateProgramPipeline(pipe);
if (!pass || !piglit_check_gl_error(GL_NO_ERROR)) {
fprintf(stderr, "error building program/pipeline\n");
piglit_report_result(PIGLIT_FAIL);
}
/* Create atomic counter buffer. */
glGenBuffers(1, &buffer);
glBindBufferBase(GL_ATOMIC_COUNTER_BUFFER, 0, buffer);
glBufferData(GL_ATOMIC_COUNTER_BUFFER,
sizeof(uint32_t), &counter, GL_DYNAMIC_DRAW);
if (!piglit_check_gl_error(GL_NO_ERROR)) {
fprintf(stderr, "error creating atomic buffer\n");
piglit_report_result(PIGLIT_FAIL);
}
}
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