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/*
* Copyright © 2010 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 link-mismatch-layout-03.c
* Verify that linking passes when layout qualifiers are used
*
* Attmpt to link two fragment shaders. One shader specifies
* \c pixel_center_interger layout of \c gl_FragCoord, and the other does not
* specify a layout qualifier for \c gl_FragCoord. Linking should succeed.
*
* \author Ian Romanick <ian.d.romanick@intel.com>
*/
#include "piglit-util.h"
PIGLIT_GL_TEST_MAIN(
100 /*window_width*/,
100 /*window_height*/,
GLUT_RGB | GLUT_DOUBLE)
static const char layout_center[] =
"#extension GL_ARB_fragment_coord_conventions: enable\n"
"layout(pixel_center_integer) varying vec4 gl_FragCoord;\n"
"vec4 foo(void);\n"
"void main(void)\n"
"{\n"
" gl_FragColor = foo();\n"
"}\n";
static const char layout_upper[] =
"vec4 foo(void)\n"
"{\n"
" return vec4(1.0);\n"
"}\n";
enum piglit_result
piglit_display(void)
{
return PIGLIT_FAIL;
}
void
piglit_init(int argc, char **argv)
{
GLint ok;
GLuint prog;
GLuint fs[2];
if (piglit_get_gl_version() < 20) {
printf("Requires OpenGL 2.0\n");
piglit_report_result(PIGLIT_SKIP);
}
piglit_require_extension("GL_ARB_fragment_coord_conventions");
fs[0] = piglit_compile_shader_text(GL_FRAGMENT_SHADER, layout_center);
fs[1] = piglit_compile_shader_text(GL_FRAGMENT_SHADER, layout_upper);
prog = glCreateProgram();
glAttachShader(prog, fs[0]);
glAttachShader(prog, fs[1]);
glLinkProgram(prog);
glDeleteShader(fs[0]);
glDeleteShader(fs[1]);
ok = piglit_link_check_status(prog);
if (!ok) {
fprintf(stderr,
"Linking with gl_FragCoord layouts "
"failed when it should have succeeded.\n");
piglit_report_result(PIGLIT_FAIL);
}
piglit_report_result(PIGLIT_PASS);
}
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