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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-link-initializer-01.c
* Test conflicting variable initializers.
*
* Each of the 3 shaders involved in this test have a global variable called
* \c global_variable. Two of the shaders have (differing) initializers for
* this variable, and the other lacks an initalizer. The test verifies that
* linking the 3 shaders together results in an error due to the conflicting
* initializer.
*
* \author Ian Romanick
*/
#include "piglit-util.h"
int piglit_width = 100, piglit_height = 100;
int piglit_window_mode = GLUT_RGB | GLUT_DOUBLE;
static const GLfloat verts[12] = {
10.0, 10.0,
20.0, 10.0,
20.0, 20.0,
10.0, 20.0
};
static const char *vs_code =
"void main()\n"
"{\n"
" gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;\n"
"}\n";
static const char *fs_code =
"void main()\n"
"{\n"
" gl_FragColor = gl_LightModel.ambient;\n"
"}\n";
void
piglit_init(int argc, char **argv)
{
GLuint vs, fs, prog;
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
if (piglit_get_gl_version() < 20) {
printf("Requires OpenGL 2.0\n");
piglit_report_result(PIGLIT_SKIP);
}
vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vs_code);
fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fs_code);
prog = piglit_link_simple_program(vs, fs);
glUseProgram(prog);
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(GLfloat),
verts);
glEnableVertexAttribArray(0);
}
enum piglit_result
piglit_display(void)
{
GLboolean pass = GL_TRUE;
static const GLfloat green[4] = { 0.0, 1.0, 0.0, 1.0 };
glClearColor(0.5, 0.5, 0.5, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, green);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
pass = pass && piglit_probe_pixel_rgb(15, 15, green);
glutSwapBuffers();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
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