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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 multiple-layout-qualifiers.c
*
* From the GL_ARB_shading_language_420pack spec:
*
* "More than one layout qualifier may appear in a single declaration. If
* the same layout-qualifier-name occurs in multiple layout qualifiers for
* the same declaration, the last one overrides the former ones."
*
* For example
*
* layout(column_major) layout(row_major)
*
* results in the qualification being row_major."
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 10;
config.window_width = 10;
config.window_height = 10;
config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
PIGLIT_GL_TEST_CONFIG_END
static const char *source =
"#extension GL_ARB_shading_language_420pack: enable\n"
"#extension GL_ARB_uniform_buffer_object : enable\n"
"\n"
"/* Use std140 to avoid needing to ref every single uniform */\n"
"layout(std140) uniform;\n"
"\n"
"layout(column_major) uniform a {\n"
" layout(column_major) layout(row_major) mat4 a_rm1;\n"
" layout(row_major) layout(column_major) mat4 a_cm1;\n"
"};\n"
"\n"
"layout(row_major) uniform b {\n"
" layout(column_major) layout(row_major) mat4 a_rm2;\n"
" layout(row_major) layout(column_major) mat4 a_cm2;\n"
"};\n"
"\n"
"uniform c {\n"
" layout(column_major) layout(row_major) mat4 a_rm3;\n"
" layout(row_major) layout(column_major) mat4 a_cm3;\n"
"};\n"
"\n"
"void main() {\n"
" gl_FragColor = (\n"
" a_cm1[0] + \n"
" a_cm2[0] + \n"
" a_cm3[0] + \n"
" a_rm1[0] + \n"
" a_rm2[0] + \n"
" a_rm3[0]);\n"
"}\n";
static struct {
const char *name;
bool row_major;
} uniforms[] = {
{ "a_cm1", false },
{ "a_cm2", false },
{ "a_rm1", true },
{ "a_rm2", true },
};
void
piglit_init(int argc, char **argv)
{
bool pass = true;
unsigned int i;
GLuint prog;
piglit_require_extension("GL_ARB_shading_language_420pack");
piglit_require_extension("GL_ARB_uniform_buffer_object");
prog = piglit_build_simple_program(NULL, source);
for (i = 0; i < ARRAY_SIZE(uniforms); i++) {
GLuint index;
GLint row_major;
glGetUniformIndices(prog, 1, &uniforms[i].name, &index);
if (index == GL_INVALID_INDEX) {
printf("Failed to get index for %s\n",
uniforms[i].name);
pass = false;
continue;
}
glGetActiveUniformsiv(prog, 1, &index, GL_UNIFORM_IS_ROW_MAJOR,
&row_major);
if (row_major != uniforms[i].row_major) {
fprintf(stderr, "Uniform %s should %sbe row major\n",
uniforms[i].name,
uniforms[i].row_major ? "" : "not ");
pass = false;
}
}
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
enum piglit_result piglit_display(void)
{
/* UNREACHED */
return PIGLIT_FAIL;
}
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