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/*
* Copyright © 2012 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 row-major.c
*
* From the GL_ARB_uniform_buffer_object spec:
*
* "The row_major qualifier overrides only the column_major
* qualifier; other qualifiers are inherited. It only affects the
* layout of matrices. Elements within a matrix row will be
* contiguous in memory.
*
* The column_major qualifier overrides only the row_major
* qualifier; other qualifiers are inherited. It only affects the
* layout of matrices. Elements within a matrix column will be
* contiguous in memory.
*
* When multiple arguments are listed in a layout declaration,
* the affect will be the same as if they were declared one at a
* time, in order from left to right, each in turn inheriting
* from and overriding the result from the previous
* qualification.
*
* For example
*
* layout(row_major, column_major)
*
* results in the qualification being column_major."
*/
#include "piglit-util-gl-common.h"
PIGLIT_GL_TEST_MAIN(
10 /*window_width*/,
10 /*window_height*/,
PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_ALPHA)
static const char *source =
"#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"
" mat4 a_cm1;\n"
" layout(column_major) mat4 a_cm2;\n"
" layout(row_major) mat4 a_rm1;\n"
" layout(row_major, column_major) mat4 a_cm3;\n"
" vec4 a_non_matrix;\n"
"};\n"
"\n"
"layout(row_major) uniform b {\n"
" mat4 b_rm1;\n"
" layout(column_major) mat4 b_cm1;\n"
" layout(row_major) mat4 b_rm2;\n"
" vec4 b_non_matrix;\n"
"};\n"
"\n"
"uniform c {\n"
" mat4 c_cm1;\n"
" layout(column_major) mat4 c_cm2;\n"
" layout(row_major) mat4 c_rm1;\n"
" vec4 c_non_matrix;\n"
"};\n"
"\n"
"/* Set the default layout to row_major. Spam in some block layout\n"
" * qualifiers to make sure they don't accidentally clear row_major.\n"
" */\n"
"layout(row_major, std140) uniform;\n"
"layout(std140) uniform;\n"
"\n"
"layout(column_major) uniform d {\n"
" mat4 d_cm1;\n"
" layout(column_major) mat4 d_cm2;\n"
" layout(row_major) mat4 d_rm1;\n"
" vec4 d_non_matrix;\n"
"};\n"
"\n"
"layout(row_major) uniform e {\n"
" mat4 e_rm1;\n"
" layout(column_major) mat4 e_cm1;\n"
" layout(row_major) mat4 e_rm2;\n"
" vec4 e_non_matrix;\n"
"};\n"
"\n"
"layout(std140) uniform f {\n"
" mat4 f_rm1;\n"
" layout(column_major) mat4 f_cm1;\n"
" layout(row_major) mat4 f_rm2;\n"
" vec4 f_non_matrix;\n"
"};\n"
"\n"
"uniform mat4 non_ubo_mat;\n"
"uniform vec4 non_mat;\n"
"\n"
"void main() {\n"
" gl_FragColor = (\n"
" non_ubo_mat[0] + \n"
" non_mat + \n"
" a_non_matrix + \n"
" b_non_matrix + \n"
" c_non_matrix + \n"
" d_non_matrix + \n"
" e_non_matrix + \n"
" f_non_matrix);\n"
"}\n";
static struct {
const char *name;
bool row_major;
} uniforms[] = {
{ "a_non_matrix", false },
{ "a_cm1", false },
{ "a_cm2", false },
{ "a_cm3", false },
{ "a_rm1", true },
{ "b_non_matrix", false },
{ "b_cm1", false },
{ "b_rm1", true },
{ "b_rm2", true },
{ "c_non_matrix", false },
{ "c_cm1", false },
{ "c_cm2", false },
{ "c_rm1", true },
{ "d_non_matrix", false },
{ "d_cm1", false },
{ "d_cm2", false },
{ "d_rm1", true },
{ "e_non_matrix", false },
{ "e_cm1", false },
{ "e_rm1", true },
{ "e_rm2", true },
{ "f_non_matrix", false },
{ "f_cm1", false },
{ "f_rm1", true },
{ "f_rm2", true },
{ "non_ubo_mat", false },
{ "non_mat", false },
};
void
piglit_init(int argc, char **argv)
{
bool pass = true;
unsigned int i;
GLuint fs, prog;
piglit_require_extension("GL_ARB_uniform_buffer_object");
fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, source);
if (!fs) {
fprintf(stderr, "Failed to compile shader:\n%s", source);
piglit_report_result(PIGLIT_FAIL);
}
prog = piglit_link_simple_program(fs, 0);
if (!fs || !prog) {
fprintf(stderr, "Failed to compile/link shader:\n%s", source);
piglit_report_result(PIGLIT_FAIL);
}
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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