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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 getactiveuniformsiv-uniform-matrix-stride.c
*
* Tests that (std140 layout) uniform matrix strides are reported
* correctly through the API.
*
* Because std140 lays matrices out like arrays, and array elements
* get rounded up to the size of a vec4, MATRIX_STRIDE is either 16 or
* a non-matrix value.
*/
#include "piglit-util-gl-common.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_DOUBLE | PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_ALPHA;
PIGLIT_GL_TEST_CONFIG_END
static const char fs_source[] =
"#extension GL_ARB_uniform_buffer_object : require\n"
"\n"
"layout(std140) uniform ub {\n"
" vec4 v4;\n"
" mat4 m4;\n"
" mat3 m3;\n"
" mat2 m2;\n"
" mat4 m4a[2];\n"
"};\n"
"uniform vec4 default_v4;\n"
"uniform mat4 default_m4;\n"
"\n"
"void main()\n"
"{\n"
" gl_FragColor = v4 + default_v4 + default_m4[0];\n"
"}\n";
void
piglit_init(int argc, char **argv)
{
bool pass = true;
GLuint fs, prog;
const char *uniform_names[] = {
"v4",
"m4",
"m3",
"m2",
"m4a[0]",
"default_v4",
"default_m4",
};
int expected_strides[] = {
0,
16,
16,
16,
16,
-1,
-1,
};
GLint strides[ARRAY_SIZE(uniform_names)];
GLuint uniform_indices[ARRAY_SIZE(uniform_names)];
int i;
piglit_require_extension("GL_ARB_uniform_buffer_object");
fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fs_source);
prog = piglit_link_simple_program(0, fs);
if (!fs || !prog) {
printf("Failed to compile FS:\n%s", fs_source);
piglit_report_result(PIGLIT_FAIL);
}
glGetUniformIndices(prog, ARRAY_SIZE(uniform_names), uniform_names,
uniform_indices);
glGetActiveUniformsiv(prog, ARRAY_SIZE(uniform_names), uniform_indices,
GL_UNIFORM_MATRIX_STRIDE, strides);
for (i = 0; i < ARRAY_SIZE(uniform_names); i++) {
printf("Uniform \"%s\": stride %d, expected %d",
uniform_names[i],
strides[i],
expected_strides[i]);
if (strides[i] != expected_strides[i]) {
printf(" FAIL");
pass = false;
}
printf("\n");
}
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
enum piglit_result piglit_display(void)
{
/* UNREACHED */
return PIGLIT_FAIL;
}
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