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/*
* Copyright © 2013 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 array-indexing.c
*
* Check that dynamically uniform indexing of an atomic counter array
* works as expected.
*/
#include "common.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_core_version = 31;
config.window_width = 1;
config.window_height = 1;
config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
config.khr_no_error_support = PIGLIT_NO_ERRORS;
PIGLIT_GL_TEST_CONFIG_END
static bool
set_uniform_int(GLuint prog, const char *name, int value)
{
int loc;
glLinkProgram(prog);
glUseProgram(prog);
loc = glGetUniformLocation(prog, name);
if (loc < 0) {
fprintf(stderr, "Failed to get location for uniform '%s'.\n",
name);
return false;
}
glUniform1i(loc, value);
return piglit_check_gl_error(GL_NO_ERROR);
}
static bool
run_test_vertex(void)
{
const char *fs_source = "#version 140\n"
"flat in ivec4 vcolor;\n"
"out ivec4 fcolor;\n"
"void main() {\n"
" fcolor = vcolor;\n"
"}\n";
const char *vs_source = "#version 140\n"
"#extension GL_ARB_shader_atomic_counters : enable\n"
"\n"
"layout(binding = 0, offset = 4) uniform atomic_uint x[3];\n"
"in vec4 position;\n"
"flat out ivec4 vcolor;\n"
"uniform int index;\n"
"\n"
"void main() {\n"
" vcolor.x = int(atomicCounterIncrement(x[1 + index]));\n"
" vcolor.y = int(atomicCounterIncrement(x[0 + index]));\n"
" vcolor.z = int(atomicCounterIncrement(x[1 + index]));\n"
" vcolor.w = int(atomicCounterIncrement(x[0 + index]));\n"
" gl_Position = position;\n"
"}\n";
const unsigned int start[] = { 1, 2, 4, 8 };
const unsigned int expected[] = { 8, 4, 9, 5 };
GLuint prog = glCreateProgram();
bool ret =
atomic_counters_compile(prog, GL_FRAGMENT_SHADER, fs_source) &&
atomic_counters_compile(prog, GL_VERTEX_SHADER, vs_source) &&
set_uniform_int(prog, "index", 1) &&
atomic_counters_draw_point(prog, sizeof(start), start) &&
piglit_probe_rect_rgba_uint(0, 0, 1, 1, expected);
glDeleteProgram(prog);
return ret;
}
static bool
run_test_fragment(void)
{
const char *fs_source = "#version 140\n"
"#extension GL_ARB_shader_atomic_counters : enable\n"
"\n"
"out ivec4 fcolor;\n"
"uniform int index;\n"
"layout(binding = 0, offset = 4) uniform atomic_uint x[3];\n"
"\n"
"void main() {\n"
" fcolor.x = int(atomicCounterIncrement(x[1 + index]));\n"
" fcolor.y = int(atomicCounterIncrement(x[0 + index]));\n"
" fcolor.z = int(atomicCounterIncrement(x[1 + index]));\n"
" fcolor.w = int(atomicCounterIncrement(x[0 + index]));\n"
"}\n";
const char *vs_source = "#version 140\n"
"#extension GL_ARB_shader_atomic_counters : enable\n"
"\n"
"in vec4 position;\n"
"\n"
"void main() {\n"
" gl_Position = position;\n"
"}\n";
const uint32_t start[] = { 1, 2, 4, 8 };
const unsigned int expected[] = { 8, 4, 9, 5 };
GLuint prog = glCreateProgram();
bool ret =
atomic_counters_compile(prog, GL_FRAGMENT_SHADER, fs_source) &&
atomic_counters_compile(prog, GL_VERTEX_SHADER, vs_source) &&
set_uniform_int(prog, "index", 1) &&
atomic_counters_draw_point(prog, sizeof(start), start) &&
piglit_probe_rect_rgba_uint(0, 0, 1, 1, expected);
glDeleteProgram(prog);
return ret;
}
void
piglit_init(int argc, char **argv)
{
GLuint fb, rb, buffer;
int vertex_counters;
piglit_require_gl_version(31);
piglit_require_extension("GL_ARB_shader_atomic_counters");
glGetIntegerv(GL_MAX_VERTEX_ATOMIC_COUNTERS,
&vertex_counters);
if(vertex_counters < 3) {
fprintf(stderr, "Insufficient number of supported atomic "
"counter buffers.\n");
piglit_report_result(PIGLIT_SKIP);
}
glGenFramebuffers(1, &fb);
glGenRenderbuffers(1, &rb);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fb);
glBindFramebuffer(GL_READ_FRAMEBUFFER, fb);
glBindRenderbuffer(GL_RENDERBUFFER, rb);
glRenderbufferStorage(GL_RENDERBUFFER, GL_RGBA32UI, 1, 1);
glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_RENDERBUFFER, rb);
glGenBuffers(1, &buffer);
glBindBufferBase(GL_ATOMIC_COUNTER_BUFFER, 0, buffer);
}
enum piglit_result
piglit_display(void)
{
enum piglit_result status = PIGLIT_PASS;
atomic_counters_subtest(&status, GL_FRAGMENT_SHADER,
"Fragment atomic counter array access",
run_test_fragment);
atomic_counters_subtest(&status, GL_VERTEX_SHADER,
"Vertex atomic counter array access",
run_test_vertex);
piglit_report_result(status);
return status;
}
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