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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 default-partition.c
*
* Test that the following is met:
*
* "Unlike other user-defined uniforms declared at global scope,
* [atomic counters] take NO storage from the default partition,
* they have NO location [...]"
*
* (from the ARB_shader_atomic_counters specification)
*/
#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
run_test(unsigned max_uniforms)
{
const char *fs_template = "#version 140\n"
"#extension GL_ARB_shader_atomic_counters : enable\n"
"\n"
"#define N %d\n"
"\n"
"out ivec4 fcolor;\n"
"layout(binding=0) uniform atomic_uint x;\n"
"uniform uint y[N];\n"
"\n"
"void main() {\n"
" int i;\n"
" uint z = atomicCounter(x);\n"
" \n"
" for (i = 0; i < N; ++i)\n"
" z += y[i];\n"
" \n"
" fcolor.x = int(z);\n"
"}\n";
char *fs_source;
GLuint prog = glCreateProgram();
int n = 0, ret;
ret = asprintf(&fs_source, fs_template, max_uniforms);
assert(ret > 0);
/* This should fail to link if 'x' ended up being accounted in
* the default uniform partition because 'y[]' uses up the
* whole available uniform space. */
atomic_counters_compile(prog, GL_FRAGMENT_SHADER, fs_source);
glLinkProgram(prog);
if (!piglit_check_gl_error(GL_NO_ERROR))
return false;
glGetProgramiv(prog, GL_ACTIVE_UNIFORMS, &n);
if (n != 2) {
printf("Unexpected number of active uniforms %d.\n", n);
return false;
}
if (glGetUniformLocation(prog, "x") != -1) {
printf("Atomic counter unexpectedly reported to have a"
" location.\n");
return false;
}
free(fs_source);
glDeleteProgram(prog);
return true;
}
void
piglit_init(int argc, char **argv)
{
struct atomic_counters_limits ls = atomic_counters_get_limits();
enum piglit_result status = PIGLIT_PASS;
piglit_require_gl_version(31);
piglit_require_extension("GL_ARB_shader_atomic_counters");
atomic_counters_subtest(&status, GL_FRAGMENT_SHADER,
"Atomic counter location",
run_test, ls.uniform_components);
piglit_report_result(status);
}
enum piglit_result
piglit_display(void)
{
return PIGLIT_PASS;
}
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