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/*
* Copyright © 2014 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 loc-boundaries.c
*
* Tests the boundary values for uniform locations, this is a positive test
* for the locations, every check here is expected to pass.
*
* The GL_ARB_explicit_uniform_location spec says:
* "The explicitly defined locations and the generated locations must be
* in the range of 0 to MAX_UNIFORM_LOCATIONS minus one."
*
* "Valid locations for default-block uniform variable locations are in
* the range of 0 to the implementation-defined maximum number of
* uniform locations."
*
* This test tests 0, MAX - 1 and a single value in between, shader contains
* also uniform without explicit location to see that it does not affect
* getting the wanted locations.
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 30;
config.window_visual = PIGLIT_GL_VISUAL_RGB;
config.khr_no_error_support = PIGLIT_NO_ERRORS;
PIGLIT_GL_TEST_CONFIG_END
enum piglit_result
piglit_display(void)
{
return PIGLIT_FAIL;
}
static const char vs_text[] =
"vec4 vertex;\n"
"void main() {\n"
"gl_Position = vertex;\n"
"}";
static const char fs_template[] =
"#version 130\n"
"#extension GL_ARB_explicit_attrib_location: require\n"
"#extension GL_ARB_explicit_uniform_location: require\n"
"uniform float a;\n"
"layout(location = %d) uniform float r;\n"
"layout(location = %d) uniform float g;\n"
"layout(location = %d) uniform float b;\n"
"void main() {\n"
"gl_FragColor = vec4(r, g, b, a);\n"
"}";
void
piglit_init(int argc, char **argv)
{
int maxloc;
GLuint prog;
char *f_sha;
piglit_require_extension("GL_ARB_explicit_attrib_location");
piglit_require_extension("GL_ARB_explicit_uniform_location");
glGetIntegerv(GL_MAX_UNIFORM_LOCATIONS, &maxloc);
if (!piglit_check_gl_error(GL_NO_ERROR))
piglit_report_result(PIGLIT_FAIL);
/* test GL_MAX_UNIFORM_LOCATIONS - 1, 0, and a loc in between (1) */
if (asprintf(&f_sha, fs_template, maxloc - 1, 0, 1) == -1)
piglit_report_result(PIGLIT_FAIL);
prog = piglit_build_simple_program(vs_text, f_sha);
free(f_sha);
if (glGetUniformLocation(prog, "r") != maxloc - 1)
piglit_report_result(PIGLIT_FAIL);
if (glGetUniformLocation(prog, "g") != 0)
piglit_report_result(PIGLIT_FAIL);
if (glGetUniformLocation(prog, "b") != 1)
piglit_report_result(PIGLIT_FAIL);
glDeleteProgram(prog);
piglit_report_result(PIGLIT_PASS);
}
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