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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 getuniformblockindex.c
*
* Tests the glGetUniformBlockIndex API: returning INVALID_INDEX for
* inactive blocks or error conditions, and consecutive numbers from 0
* for active blocks.
*/
#include "piglit-util-gl-common.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.window_width = 100;
config.window_height = 100;
config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_ALPHA;
PIGLIT_GL_TEST_CONFIG_END
static GLuint prog;
static const char frag_shader_text[] =
"#extension GL_ARB_uniform_buffer_object : require\n"
"\n"
"uniform ub_a { vec4 a; };\n"
"uniform ub_b { vec4 b; };\n"
"\n"
"void main()\n"
"{\n"
" gl_FragColor = a + b;\n"
"}\n";
void
piglit_init(int argc, char **argv)
{
bool pass = true;
int expected_ub_b_index;
int index;
GLuint fs;
piglit_require_extension("GL_ARB_uniform_buffer_object");
fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, frag_shader_text);
if (!fs) {
printf("Failed to compile FS:\n%s", frag_shader_text);
piglit_report_result(PIGLIT_FAIL);
}
prog = piglit_link_simple_program(0, fs);
if (!prog)
piglit_report_result(PIGLIT_FAIL);
index = glGetUniformBlockIndex(prog, "ub_a");
printf("Uniform block \"ub_a\" index: 0x%08x\n", index);
if (index == 0) {
expected_ub_b_index = 1;
} else if (index == 1) {
expected_ub_b_index = 0;
} else {
expected_ub_b_index = 1;
printf(" Expected 0 or 1\n");
pass = false;
}
/* From the GL_ARB_uniform_buffer_object spec:
*
* "GetUniformBlockIndex returns the uniform block index
* for the uniform block named <uniformBlockName> of
* <program>. If <uniformBlockName> does not identify an
* active uniform block of <program>, or an error
* occurred, then INVALID_INDEX is returned. The indices
* of the active uniform blocks of a program are assigned
* in consecutive order, beginning with zero."
*/
index = glGetUniformBlockIndex(prog, "ub_b");
printf("Uniform block \"ub_b\" index: 0x%08x\n", index);
if (index != expected_ub_b_index) {
printf(" Expected 0x%08x\n", expected_ub_b_index);
pass = false;
}
/* Since we can't guarantee that an unused uniform block is
* inactive, we ask for a block name that was never even defined.
*/
index = glGetUniformBlockIndex(prog, "ub_c");
printf("Uniform block \"ub_c\" index: 0x%08x\n", index);
if (index != GL_INVALID_INDEX) {
printf(" Expected 0x%08x\n", GL_INVALID_INDEX);
pass = false;
}
if (!piglit_check_gl_error(0)) {
pass = false;
}
/* From the GL_ARB_uniform_buffer_object spec:
*
* "The error INVALID_VALUE is generated by
* GetUniformIndices, GetActiveUniformsiv,
* GetActiveUniformName, GetUniformBlockIndex,
* GetActiveUniformBlockiv, GetActiveUniformBlockName,
* and UniformBlockBinding if <program> is not a value
* generated by GL.
*/
index = glGetUniformBlockIndex(0xd0d0, "a");
if (!piglit_check_gl_error(GL_INVALID_VALUE)) {
pass = false;
} else if (index != GL_INVALID_INDEX) {
printf("Bad program uniform index: 0x%08x\n", index);
printf(" Expected 0x%08x\n", GL_INVALID_INDEX);
pass = false;
}
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
enum piglit_result piglit_display(void)
{
/* UNREACHED */
return PIGLIT_FAIL;
}
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