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/* Display a cleared blue window. This demo has no dependencies on
* any utility code, just the graw interface and gallium.
*/
#include "state_tracker/graw.h"
#include "pipe/p_screen.h"
#include "pipe/p_context.h"
#include "pipe/p_state.h"
#include "pipe/p_defines.h"
#include <unistd.h> /* for sleep() */
enum pipe_format formats[] = {
PIPE_FORMAT_R8G8B8A8_UNORM,
PIPE_FORMAT_B8G8R8A8_UNORM,
PIPE_FORMAT_NONE
};
static const int WIDTH = 300;
static const int HEIGHT = 300;
int main( int argc, char *argv[] )
{
struct pipe_screen *screen;
struct pipe_context *pipe;
struct pipe_surface *surf;
struct pipe_framebuffer_state fb;
struct pipe_texture *tex, templat;
void *window = NULL;
float clear_color[4] = {1,0,1,1};
int i;
screen = graw_init();
if (screen == NULL)
exit(1);
for (i = 0;
window == NULL && formats[i] != PIPE_FORMAT_NONE;
i++) {
window = graw_create_window(0,0,300,300, formats[i]);
}
if (window == NULL)
exit(2);
pipe = screen->context_create(screen, NULL);
if (pipe == NULL)
exit(3);
templat.target = PIPE_TEXTURE_2D;
templat.format = formats[i];
templat.width0 = WIDTH;
templat.height0 = HEIGHT;
templat.depth0 = 1;
templat.last_level = 0;
templat.nr_samples = 1;
templat.tex_usage = (PIPE_TEXTURE_USAGE_RENDER_TARGET |
PIPE_TEXTURE_USAGE_DISPLAY_TARGET);
tex = screen->texture_create(screen,
&templat);
if (tex == NULL)
exit(4);
surf = screen->get_tex_surface(screen, tex, 0, 0, 0,
PIPE_TEXTURE_USAGE_RENDER_TARGET |
PIPE_TEXTURE_USAGE_DISPLAY_TARGET);
if (surf == NULL)
exit(5);
memset(&fb, 0, sizeof fb);
fb.nr_cbufs = 1;
fb.width = WIDTH;
fb.height = HEIGHT;
fb.cbufs[0] = surf;
pipe->set_framebuffer_state(pipe, &fb);
pipe->clear(pipe, PIPE_CLEAR_COLOR, clear_color, 0, 0);
pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
screen->flush_frontbuffer(screen, surf, window);
sleep(100);
return 0;
}
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