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/*
* Copyright (c) 2012 Mathias Fröhlich
*
* 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 glx-multithread-shader-compile.c
* @author Mathias Fröhlich
*
* Create two GLX contexts and concurrently compile shaders.
* Exercises a race conditon with the r600 llvm compiler.
*/
#include "piglit-util-gl.h"
#include "piglit-glx-util.h"
#include "pthread.h"
static const char *vert_shader_text =
"void main() \n"
"{ \n"
" gl_Position = ftransform(); \n"
" gl_FrontColor = gl_Color; \n"
"} \n";
static const char *frag_shader_text =
"void main() \n"
"{ \n"
" gl_FragColor = vec4(1.0) - gl_Color; \n"
"} \n";
static pthread_mutex_t mutex;
static void *
thread_func(void *arg)
{
Display *dpy;
XVisualInfo *visinfo;
Window win;
unsigned i;
dpy = piglit_get_glx_display();
visinfo = piglit_get_glx_visual(dpy);
win = piglit_get_glx_window(dpy, visinfo);
for (i = 0; i < 100; ++i) {
GLXContext ctx;
GLuint vert_shader, frag_shader;
GLuint program;
ctx = piglit_get_glx_context(dpy, visinfo);
glXMakeCurrent(dpy, win, ctx);
/* Ok, not nice but should be safe due to all threads working
* on the same type of context.
*/
pthread_mutex_lock(&mutex);
piglit_dispatch_default_init(PIGLIT_DISPATCH_GL);
pthread_mutex_unlock(&mutex);
vert_shader = piglit_compile_shader_text(GL_VERTEX_SHADER, vert_shader_text);
piglit_check_gl_error(GL_NO_ERROR);
frag_shader = piglit_compile_shader_text(GL_FRAGMENT_SHADER, frag_shader_text);
piglit_check_gl_error(GL_NO_ERROR);
program = piglit_link_simple_program(vert_shader, frag_shader);
piglit_check_gl_error(GL_NO_ERROR);
glUseProgram(program);
piglit_check_gl_error(GL_NO_ERROR);
glXDestroyContext(dpy, ctx);
}
return NULL;
}
int
main(int argc, char **argv)
{
int ret;
pthread_t thread1, thread2;
XInitThreads();
pthread_mutex_init(&mutex, NULL);
/* Now, spawn some threads that compile simple shaders.
*/
pthread_create(&thread1, NULL, thread_func, NULL);
pthread_create(&thread2, NULL, thread_func, NULL);
ret = pthread_join(thread1, NULL);
assert(ret == 0);
ret = pthread_join(thread2, NULL);
assert(ret == 0);
pthread_mutex_destroy(&mutex);
piglit_report_result(PIGLIT_PASS);
return 0;
}
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