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/*
* Copyright (c) 2010 VMware, Inc.
*
* 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-shader-sharing.c
* @author Brian Paul
*
* Create two GLX contexts with shared shaders. Destroy first context,
* draw with second context.
*/
#include "piglit-util-gl-common.h"
#include "piglit-glx-util.h"
int piglit_width = 50, piglit_height = 50;
static const char *TestName = "glx-shader-sharing";
static Display *dpy;
static Window win;
static XVisualInfo *visinfo;
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 GLuint vert_shader, frag_shader;
static GLuint program;
static void
check_error(int line)
{
GLenum e = glGetError();
if (e)
printf("GL Error 0x%x at line %d\n", e, line);
}
enum piglit_result
draw(Display *dpy)
{
const GLfloat red[3] = {1.0F, 0.0F, 0.0F};
const GLfloat green[3] = {0.0F, 1.0F, 0.0F};
GLXContext ctx1 = piglit_get_glx_context(dpy, visinfo);
GLXContext ctx2 = piglit_get_glx_context_share(dpy, visinfo, ctx1);
int ok;
if (!ctx1 || !ctx2) {
fprintf(stderr, "%s: create contexts failed\n", TestName);
piglit_report_result(PIGLIT_FAIL);
}
/*
* Bind first context, make some shaders, draw something.
*/
glXMakeCurrent(dpy, win, ctx1);
piglit_dispatch_default_init();
if (piglit_get_gl_version() < 20) {
printf("%s: Requires OpenGL 2.0\n", TestName);
return PIGLIT_SKIP;
}
glClearColor(1.0, 0.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
vert_shader = piglit_compile_shader_text(GL_VERTEX_SHADER, vert_shader_text);
frag_shader = piglit_compile_shader_text(GL_FRAGMENT_SHADER, frag_shader_text);
program = piglit_link_simple_program(vert_shader, frag_shader);
check_error(__LINE__);
assert(program);
glUseProgram(program);
check_error(__LINE__);
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
glClearColor(0.1, 0.1, 0.1, 0.0);
glClear(GL_COLOR_BUFFER_BIT);
glColor3f(0, 1, 1);
piglit_draw_rect(10, 10, piglit_width - 20, piglit_height - 20);
check_error(__LINE__);
ok = piglit_probe_pixel_rgb(piglit_width / 2, piglit_height / 2, red);
glXSwapBuffers(dpy, win);
if (!ok) {
printf("%s: drawing with context 1 failed\n", TestName);
return PIGLIT_FAIL;
}
/*
* Destroy first context
*/
glXDestroyContext(dpy, ctx1);
/*
* Draw something with second context (and shaders above)
*/
glXMakeCurrent(dpy, win, ctx2);
/*program = piglit_link_simple_program(vert_shader, frag_shader);*/
check_error(__LINE__);
assert(program);
glUseProgram(program);
check_error(__LINE__);
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
glClearColor(0.2, 0.2, 0.2, 0.0);
glClear(GL_COLOR_BUFFER_BIT);
glColor3f(1, 0, 1);
piglit_draw_rect(10, 10, piglit_width - 20, piglit_height - 20);
check_error(__LINE__);
ok = piglit_probe_pixel_rgb(piglit_width / 2, piglit_height / 2, green);
glXSwapBuffers(dpy, win);
if (!ok) {
printf("%s: drawing with context 2 failed\n", TestName);
return PIGLIT_FAIL;
}
glXDestroyContext(dpy, ctx2);
return PIGLIT_PASS;
}
int
main(int argc, char **argv)
{
int i;
for(i = 1; i < argc; ++i) {
if (strcmp(argv[i], "-auto") == 0)
piglit_automatic = 1;
else
fprintf(stderr, "%s bad option: %s\n", TestName, argv[i]);
}
dpy = XOpenDisplay(NULL);
if (dpy == NULL) {
fprintf(stderr, "%s: open display failed\n", TestName);
piglit_report_result(PIGLIT_FAIL);
}
visinfo = piglit_get_glx_visual(dpy);
win = piglit_get_glx_window(dpy, visinfo);
XMapWindow(dpy, win);
piglit_glx_event_loop(dpy, draw);
return 0;
}
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