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#include <glib.h>
#include <cogl/cogl.h>
#include <math.h>
#include "cogl/cogl-profile.h"
#define FRAMEBUFFER_WIDTH 800
#define FRAMEBUFFER_HEIGHT 600
CoglBool run_all = FALSE;
typedef struct _Data
{
CoglContext *ctx;
CoglFramebuffer *fb;
CoglPipeline *pipeline;
CoglPipeline *alpha_pipeline;
GTimer *timer;
int frame;
} Data;
static void
test_rectangles (Data *data)
{
#define RECT_WIDTH 5
#define RECT_HEIGHT 5
int x;
int y;
cogl_framebuffer_clear4f (data->fb, COGL_BUFFER_BIT_COLOR, 1, 1, 1, 1);
cogl_framebuffer_push_rectangle_clip (data->fb,
10,
10,
FRAMEBUFFER_WIDTH - 10,
FRAMEBUFFER_HEIGHT - 10);
/* Should the rectangles be randomly positioned/colored/rotated?
*
* It could be good to develop equivalent GL and Cairo tests so we can
* have a sanity check for our Cogl performance.
*
* The color should vary to check that we correctly batch color changes
* The use of alpha should vary so we have a variation of which rectangles
* require blending.
* Should this be a random variation?
* It could be good to experiment with focibly enabling blending for
* rectangles that don't technically need it for the sake of extending
* batching. E.g. if you a long run of interleved rectangles with every
* other rectangle needing blending then it may be worth enabling blending
* for all the rectangles to avoid the state changes.
* The modelview should change between rectangles to check the software
* transform codepath.
* Should we group some rectangles under the same modelview? Potentially
* we could avoid software transform for long runs of rectangles with the
* same modelview.
*
*/
for (y = 0; y < FRAMEBUFFER_HEIGHT; y += RECT_HEIGHT)
{
for (x = 0; x < FRAMEBUFFER_WIDTH; x += RECT_WIDTH)
{
cogl_framebuffer_push_matrix (data->fb);
cogl_framebuffer_translate (data->fb, x, y, 0);
cogl_framebuffer_rotate (data->fb, 45, 0, 0, 1);
cogl_pipeline_set_color4f (data->pipeline,
1,
(1.0f/FRAMEBUFFER_WIDTH)*y,
(1.0f/FRAMEBUFFER_HEIGHT)*x,
1);
cogl_framebuffer_draw_rectangle (data->fb,
data->pipeline,
0, 0, RECT_WIDTH, RECT_HEIGHT);
cogl_framebuffer_pop_matrix (data->fb);
}
}
for (y = 0; y < FRAMEBUFFER_HEIGHT; y += RECT_HEIGHT)
{
for (x = 0; x < FRAMEBUFFER_WIDTH; x += RECT_WIDTH)
{
cogl_framebuffer_push_matrix (data->fb);
cogl_framebuffer_translate (data->fb, x, y, 0);
cogl_pipeline_set_color4f (data->alpha_pipeline,
1,
(1.0f/FRAMEBUFFER_WIDTH)*x,
(1.0f/FRAMEBUFFER_HEIGHT)*y,
(1.0f/FRAMEBUFFER_WIDTH)*x);
cogl_framebuffer_draw_rectangle (data->fb,
data->alpha_pipeline,
0, 0, RECT_WIDTH, RECT_HEIGHT);
cogl_framebuffer_pop_matrix (data->fb);
}
}
cogl_framebuffer_pop_clip (data->fb);
}
static CoglBool
paint_cb (void *user_data)
{
Data *data = user_data;
double elapsed;
data->frame++;
test_rectangles (data);
cogl_onscreen_swap_buffers (COGL_ONSCREEN (data->fb));
elapsed = g_timer_elapsed (data->timer, NULL);
if (elapsed > 1.0)
{
g_print ("fps = %f\n", data->frame / elapsed);
g_timer_start (data->timer);
data->frame = 0;
}
return FALSE; /* remove the callback */
}
static void
frame_event_cb (CoglOnscreen *onscreen,
CoglFrameEvent event,
CoglFrameInfo *info,
void *user_data)
{
if (event == COGL_FRAME_EVENT_SYNC)
paint_cb (user_data);
}
int
main (int argc, char **argv)
{
Data data;
CoglOnscreen *onscreen;
GSource *cogl_source;
GMainLoop *loop;
COGL_STATIC_TIMER (mainloop_timer,
NULL, //no parent
"Mainloop",
"The time spent in the glib mainloop",
0); // no application private data
data.ctx = cogl_context_new (NULL, NULL);
onscreen = cogl_onscreen_new (data.ctx,
FRAMEBUFFER_WIDTH, FRAMEBUFFER_HEIGHT);
cogl_onscreen_set_swap_throttled (onscreen, FALSE);
cogl_onscreen_show (onscreen);
data.fb = COGL_FRAMEBUFFER (onscreen);
cogl_framebuffer_orthographic (data.fb,
0, 0,
FRAMEBUFFER_WIDTH, FRAMEBUFFER_HEIGHT,
-1,
100);
data.pipeline = cogl_pipeline_new (data.ctx);
cogl_pipeline_set_color4f (data.pipeline, 1, 1, 1, 1);
data.alpha_pipeline = cogl_pipeline_new (data.ctx);
cogl_pipeline_set_color4f (data.alpha_pipeline, 1, 1, 1, 0.5);
cogl_source = cogl_glib_source_new (data.ctx, G_PRIORITY_DEFAULT);
g_source_attach (cogl_source, NULL);
cogl_onscreen_add_frame_callback (COGL_ONSCREEN (data.fb),
frame_event_cb,
&data,
NULL); /* destroy notify */
g_idle_add (paint_cb, &data);
data.frame = 0;
data.timer = g_timer_new ();
g_timer_start (data.timer);
loop = g_main_loop_new (NULL, TRUE);
COGL_TIMER_START (uprof_get_mainloop_context (), mainloop_timer);
g_main_loop_run (loop);
COGL_TIMER_STOP (uprof_get_mainloop_context (), mainloop_timer);
return 0;
}
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