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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 glsl-fs-user-varying-ff.c
* Test that a fragment shader drawing with an undefined varying color
* at least runs.
*
* \author Ian Romanick <ian.d.romanick@intel.com>
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 10;
config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
PIGLIT_GL_TEST_CONFIG_END
static const char fs_text[] =
"varying vec4 color;\n"
"\n"
"void main()\n"
"{\n"
" gl_FragColor = color;\n"
"}\n"
;
GLuint prog;
enum piglit_result
piglit_display(void)
{
static const float green[3] = { 0.0, 1.0, 0.0 };
float junk[4];
glClear(GL_COLOR_BUFFER_BIT);
glColor3fv(green);
piglit_draw_rect(10, 10, 10, 10);
/* The result is undefined (and in particular we may find
* green since so many other tests happen to load our
* registers with green), but the GPU shouldn't hang.
* So we read the value, but don't test it for anything.
*/
glReadPixels(15, 15, 1, 1, GL_RGBA, GL_FLOAT, junk);
piglit_present_results();
return PIGLIT_PASS;
}
void
piglit_init(int argc, char **argv)
{
GLuint fs;
piglit_require_gl_version(20);
glClearColor(0.3, 0.3, 0.3, 0.0);
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fs_text);
prog = piglit_link_simple_program(fs, 0);
glDeleteShader(fs);
/* Don't try to render if the program failed to link, and linking
* had better succeed!
*/
if (!prog)
piglit_report_result(PIGLIT_FAIL);
glUseProgram(prog);
}
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