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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 useprogram-inside-begin.c
* Verify that calling glUseProgram inside a glBegin/glEnd pair causes an error
*
* \author Ian Romanick <ian.d.romanick@intel.com>
*/
#include "piglit-util-gl-common.h"
PIGLIT_GL_TEST_MAIN(
100 /*window_width*/,
100 /*window_height*/,
GLUT_RGB | GLUT_DOUBLE)
static const char vs_text[] =
"void main() { gl_Position = gl_Vertex; }";
static const char fs_text[] =
"void main() { gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0); }";
enum piglit_result
piglit_display(void)
{
return PIGLIT_FAIL;
}
void
piglit_init(int argc, char **argv)
{
enum piglit_result result = PIGLIT_PASS;
GLint prog;
GLint fs;
GLint vs;
GLenum err;
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_text);
fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fs_text);
prog = piglit_link_simple_program(vs, fs);
glUseProgram(prog);
/* There shouldn't be any GL errors, but clear them all just to be
* sure.
*/
while (glGetError() != 0)
/* empty */ ;
glBegin(GL_TRIANGLE_STRIP);
glUseProgram(0);
glEnd();
err = glGetError();
if (err != GL_INVALID_OPERATION) {
printf("Unexpected OpenGL error state 0x%04x for "
"glUseProgram(0) "
"inside glBegin/glEnd pair (expected 0x%04x).\n",
err, GL_INVALID_OPERATION);
result = PIGLIT_FAIL;
}
while (glGetError() != 0)
/* empty */ ;
/* Try again, but re-use the same program. This should still generate
* an error even though it's a no-op.
*/
glUseProgram(prog);
glBegin(GL_TRIANGLE_STRIP);
glUseProgram(prog);
glEnd();
err = glGetError();
if (err != GL_INVALID_OPERATION) {
printf("Unexpected OpenGL error state 0x%04x for "
"glUseProgram(prog) "
"inside glBegin/glEnd pair (expected 0x%04x).\n",
err, GL_INVALID_OPERATION);
result = PIGLIT_FAIL;
}
piglit_report_result(result);
}
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