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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.c
*
* Test atomic counters with when a framebuffer with no attachments is bound.
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_core_version = 31;
config.khr_no_error_support = PIGLIT_NO_ERRORS;
PIGLIT_GL_TEST_CONFIG_END
const char *vs_source =
"#version 140\n"
"in vec4 piglit_vertex;\n"
"void main() {\n"
" gl_Position = piglit_vertex;\n"
"}\n";
const char *fs_source =
"#version 140\n"
"#extension GL_ARB_shader_atomic_counters : enable\n"
"layout(binding = 0, offset = 0) uniform atomic_uint counter;\n"
"void main() {\n"
" atomicCounterIncrement(counter);\n"
"}\n";
enum piglit_result
piglit_display(void)
{
return PIGLIT_FAIL;
}
static void
reset_counter()
{
/* Reset value of atomic counter. */
uint32_t *ptr =
(uint32_t *) glMapBufferRange(GL_ATOMIC_COUNTER_BUFFER, 0,
sizeof(uint32_t), GL_MAP_WRITE_BIT);
*ptr = 0;
glUnmapBuffer(GL_ATOMIC_COUNTER_BUFFER);
}
static bool
compare_counter(uint32_t value, const char *subtest)
{
/* Map atomic buffer and check that we have expected results. */
bool result = false;
uint32_t *ptr =
(uint32_t *) glMapBufferRange(GL_ATOMIC_COUNTER_BUFFER, 0,
sizeof(uint32_t), GL_MAP_READ_BIT);
result = (*ptr == value);
if (!result)
fprintf(stderr, "%s (subtest %s): expected %u, got %u\n",
__func__, subtest, value, *ptr);
glUnmapBuffer(GL_ATOMIC_COUNTER_BUFFER);
piglit_report_subtest_result(result ? PIGLIT_PASS : PIGLIT_FAIL,
"%s", subtest);
return result;
}
void
piglit_init(int argc, char **argv)
{
GLuint buffer, fbo, vao;
GLint prog;
bool pass = true;
uint32_t counter = 0;
piglit_require_gl_version(31);
piglit_require_extension("GL_ARB_framebuffer_no_attachments");
piglit_require_extension("GL_ARB_shader_atomic_counters");
/* Create fbo with no attachments. */
glGenFramebuffers(1, &fbo);
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
/* Setup default width and height. */
glFramebufferParameteri(GL_FRAMEBUFFER,
GL_FRAMEBUFFER_DEFAULT_WIDTH, piglit_width);
glFramebufferParameteri(GL_FRAMEBUFFER,
GL_FRAMEBUFFER_DEFAULT_HEIGHT, piglit_height);
/* Check that fbo is marked complete. */
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) !=
GL_FRAMEBUFFER_COMPLETE)
piglit_report_result(PIGLIT_FAIL);
prog = piglit_build_simple_program(vs_source, fs_source);
/* Check that there are no errors. */
if (!prog || !piglit_check_gl_error(GL_NO_ERROR))
piglit_report_result(PIGLIT_FAIL);
glUseProgram(prog);
/* 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))
piglit_report_result(PIGLIT_FAIL);
/* Render rectangle using our program. */
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
piglit_draw_rect(-1, -1, 2, 2);
pass &= compare_counter(piglit_width * piglit_height, "Basic");
/* Reset counter and set 1x1 scissor rectangle. */
reset_counter();
glEnable(GL_SCISSOR_TEST);
glScissor(0, 0, 1, 1);
piglit_draw_rect(-1, -1, 2, 2);
glDisable(GL_SCISSOR_TEST);
pass &= compare_counter(1, "glScissor");
/* Reset counter and set 2x2 viewport. */
reset_counter();
glViewport(0, 0, 2, 2);
piglit_draw_rect(-1, -1, 2, 2);
pass &= compare_counter(4, "glViewport");
/* Reset counter and add samples to the default fb */
reset_counter();
glViewport(0, 0, piglit_width, piglit_height);
glFramebufferParameteri(GL_FRAMEBUFFER,
GL_FRAMEBUFFER_DEFAULT_SAMPLES, 4);
piglit_draw_rect(-1, -1, 2, 2);
if (piglit_width == piglit_height) {
/* The seam gets double-drawn */
pass &= compare_counter((piglit_width + 1) * piglit_height,
"MS4");
} else {
piglit_report_subtest_result(PIGLIT_SKIP, "MS4");
}
if (piglit_is_extension_supported("GL_ARB_sample_shading")) {
/* Reset counter and enable per-sample shading */
reset_counter();
glEnable(GL_SAMPLE_SHADING_ARB);
glMinSampleShadingARB(1.0);
piglit_draw_rect(-1, -1, 2, 2);
pass &= compare_counter(piglit_width * piglit_height * 4,
"Per-sample");
} else {
piglit_report_subtest_result(PIGLIT_SKIP, "Per-sample");
}
glDeleteFramebuffers(1, &fbo);
glDeleteVertexArrays(1, &vao);
glDeleteBuffers(1, &buffer);
glDeleteProgram(prog);
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
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