static gboolean
paint_cb (void *user_data)
{
Data *data = user_data;
CoglError *error = NULL;
const CoglGLES2Vtable *gles2 = data->gles2_vtable;
/* Draw scene with GLES2 */
if (!cogl_push_gles2_context (data->ctx,
data->gles2_ctx,
data->fb,
data->fb,
&error))
{
g_error ("Failed to push gles2 context: %s\n", error->message);
}
/* Clear offscreen framebuffer with a random color */
gles2->glClearColor (g_random_double (),
g_random_double (),
g_random_double (),
1.0f);
gles2->glClear (GL_COLOR_BUFFER_BIT);
cogl_pop_gles2_context (data->ctx);
/* Draw scene with Cogl */
cogl_primitive_draw (data->triangle, data->fb, data->pipeline);
cogl_onscreen_swap_buffers (COGL_ONSCREEN (data->fb));
return FALSE; /* remove the callback */
}
static gboolean
paint_cb (void *user_data)
{
Data *data = user_data;
double elapsed = g_timer_elapsed (data->timer, NULL);
double dt = elapsed - data->last_elapsed;
GError *error = NULL;
/* Draw scene with GLES2 */
if (!cogl_push_gles2_context (data->ctx,
data->gles2_ctx,
data->fb,
data->fb,
&error))
{
g_error ("Failed to push gles2 context: %s\n", error->message);
}
gears_draw ();
cogl_pop_gles2_context (data->ctx);
cogl_onscreen_swap_buffers (COGL_ONSCREEN (data->fb));
/* advance rotation for next frame */
angle += 70.0 * dt; /* 70 degrees per second */
if (angle > 3600.0)
angle -= 3600.0;
data->frames++;
if (elapsed > 5.0) {
GLfloat fps = data->frames / elapsed;
printf ("%d frames in %3.1f seconds = %6.3f FPS\n",
data->frames, elapsed, fps);
g_timer_reset (data->timer);
data->last_elapsed = 0;
data->frames = 0;
}else
data->last_elapsed = elapsed;
/* If the driver can deliver swap complete events then we can remove
* the idle paint callback until we next get a swap complete event
* otherwise we keep the idle paint callback installed and simply
* paint as fast as the driver will allow... */
if (cogl_has_feature (data->ctx, COGL_FEATURE_ID_SWAP_BUFFERS_EVENT))
return FALSE; /* remove the callback */
else
return TRUE;
}
static gboolean
paint_cb (void *user_data)
{
Data *data = user_data;
double elapsed = g_timer_elapsed (data->timer, NULL);
double dt = elapsed - data->last_elapsed;
CoglError *error = NULL;
/* Draw scene with GLES2 */
if (!cogl_push_gles2_context (data->ctx,
data->gles2_ctx,
data->fb,
data->fb,
&error))
{
g_error ("Failed to push gles2 context: %s\n", error->message);
}
gears_draw ();
cogl_pop_gles2_context (data->ctx);
cogl_onscreen_swap_buffers (COGL_ONSCREEN (data->fb));
/* advance rotation for next frame */
angle += 70.0 * dt; /* 70 degrees per second */
if (angle > 3600.0)
angle -= 3600.0;
data->frames++;
if (elapsed > 5.0) {
GLfloat fps = data->frames / elapsed;
printf ("%d frames in %3.1f seconds = %6.3f FPS\n",
data->frames, elapsed, fps);
g_timer_reset (data->timer);
data->last_elapsed = 0;
data->frames = 0;
}else
data->last_elapsed = elapsed;
return FALSE; /* remove the callback */
}
int
main (int argc, char **argv)
{
Data data;
CoglOnscreen *onscreen;
GError *error = NULL;
GSource *cogl_source;
GMainLoop *loop;
CoglRenderer *renderer;
CoglDisplay *display;
renderer = cogl_renderer_new ();
cogl_renderer_add_constraint (renderer,
COGL_RENDERER_CONSTRAINT_SUPPORTS_COGL_GLES2);
display = cogl_display_new (renderer, NULL);
data.ctx = cogl_context_new (display, NULL);
onscreen = cogl_onscreen_new (data.ctx, 300, 300);
cogl_onscreen_show (onscreen);
data.fb = COGL_FRAMEBUFFER (onscreen);
data.gles2_ctx = cogl_gles2_context_new (data.ctx, &error);
if (!data.gles2_ctx)
g_error ("Failed to create GLES2 context: %s\n", error->message);
/* Draw scene with GLES2 */
if (!cogl_push_gles2_context (data.ctx,
data.gles2_ctx,
data.fb,
data.fb,
&error))
{
g_error ("Failed to push gles2 context: %s\n", error->message);
}
gears_reshape (cogl_framebuffer_get_width (data.fb),
cogl_framebuffer_get_height (data.fb));
/* Initialize the gears */
gears_init();
cogl_pop_gles2_context (data.ctx);
cogl_source = cogl_glib_source_new (data.ctx, G_PRIORITY_DEFAULT);
g_source_attach (cogl_source, NULL);
if (cogl_has_feature (data.ctx, COGL_FEATURE_ID_SWAP_BUFFERS_EVENT))
cogl_onscreen_add_swap_buffers_callback (COGL_ONSCREEN (data.fb),
swap_complete_cb, &data);
g_idle_add (paint_cb, &data);
data.timer = g_timer_new ();
data.frames = 0;
data.last_elapsed = 0;
loop = g_main_loop_new (NULL, TRUE);
g_main_loop_run (loop);
return 0;
}
int
main (int argc, char **argv)
{
Data data;
CoglOnscreen *onscreen;
CoglError *error = NULL;
CoglVertexP2C4 triangle_vertices[] = {
{0, 0.7, 0xff, 0x00, 0x00, 0xff},
{-0.7, -0.7, 0x00, 0xff, 0x00, 0xff},
{0.7, -0.7, 0x00, 0x00, 0xff, 0xff}
};
GSource *cogl_source;
GMainLoop *loop;
CoglRenderer *renderer;
CoglDisplay *display;
renderer = cogl_renderer_new ();
cogl_renderer_add_constraint (renderer,
COGL_RENDERER_CONSTRAINT_SUPPORTS_COGL_GLES2);
display = cogl_display_new (renderer, NULL);
data.ctx = cogl_context_new (display, NULL);
onscreen = cogl_onscreen_new (data.ctx, 640, 480);
cogl_onscreen_show (onscreen);
data.fb = COGL_FRAMEBUFFER (onscreen);
/* Prepare onscreen primitive */
data.triangle = cogl_primitive_new_p2c4 (data.ctx,
COGL_VERTICES_MODE_TRIANGLES,
3, triangle_vertices);
data.pipeline = cogl_pipeline_new (data.ctx);
data.offscreen_texture = COGL_TEXTURE (
cogl_texture_2d_new_with_size (data.ctx,
OFFSCREEN_WIDTH,
OFFSCREEN_HEIGHT,
COGL_PIXEL_FORMAT_ANY));
data.offscreen = cogl_offscreen_new_to_texture (data.offscreen_texture);
data.gles2_ctx = cogl_gles2_context_new (data.ctx, &error);
if (!data.gles2_ctx) {
g_error ("Failed to create GLES2 context: %s\n", error->message);
}
data.gles2_vtable = cogl_gles2_context_get_vtable (data.gles2_ctx);
/* Draw scene with GLES2 */
if (!cogl_push_gles2_context (data.ctx,
data.gles2_ctx,
data.fb,
data.fb,
&error))
{
g_error ("Failed to push gles2 context: %s\n", error->message);
}
cogl_pop_gles2_context (data.ctx);
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);
loop = g_main_loop_new (NULL, TRUE);
g_main_loop_run (loop);
return 0;
}
static void
test_gles2_read_pixels (void)
{
CoglTexture *offscreen_texture;
CoglOffscreen *offscreen;
CoglPipeline *pipeline;
CoglGLES2Context *gles2_ctx;
const CoglGLES2Vtable *gles2;
GError *error = NULL;
GLubyte pixel[3];
GLuint fbo_handle;
create_gles2_context (&offscreen_texture,
&offscreen,
&pipeline,
&gles2_ctx,
&gles2);
cogl_framebuffer_clear4f (test_fb, COGL_BUFFER_BIT_COLOR, 1, 1, 1, 1);
if (!cogl_push_gles2_context (test_ctx,
gles2_ctx,
COGL_FRAMEBUFFER (offscreen),
COGL_FRAMEBUFFER (offscreen),
&error))
{
g_error ("Failed to push gles2 context: %s\n", error->message);
}
gles2->glClearColor (1, 0, 0, 1);
gles2->glClear (GL_COLOR_BUFFER_BIT);
gles2->glReadPixels (0, 0, 1, 1, GL_RGB, GL_UNSIGNED_BYTE, &pixel);
g_assert (pixel[0] == 0xff);
g_assert (pixel[1] == 0);
g_assert (pixel[2] == 0);
fbo_handle = create_gles2_framebuffer (gles2, 256, 256);
gles2->glBindFramebuffer (GL_FRAMEBUFFER, fbo_handle);
gles2->glClearColor (0, 1, 0, 1);
gles2->glClear (GL_COLOR_BUFFER_BIT);
gles2->glReadPixels (0, 0, 1, 1, GL_RGB, GL_UNSIGNED_BYTE, &pixel);
g_assert (pixel[0] == 0);
g_assert (pixel[1] == 0xff);
g_assert (pixel[2] == 0);
gles2->glBindFramebuffer (GL_FRAMEBUFFER, 0);
gles2->glClearColor (0, 1, 1, 1);
gles2->glClear (GL_COLOR_BUFFER_BIT);
gles2->glReadPixels (0, 0, 1, 1, GL_RGB, GL_UNSIGNED_BYTE, &pixel);
g_assert (pixel[0] == 0);
g_assert (pixel[1] == 0xff);
g_assert (pixel[2] == 0xff);
cogl_pop_gles2_context (test_ctx);
test_utils_check_pixel (test_fb, 0, 0, 0xffffffff);
/* Bind different read and write buffers */
if (!cogl_push_gles2_context (test_ctx,
gles2_ctx,
COGL_FRAMEBUFFER (offscreen),
test_fb,
&error))
{
g_error ("Failed to push gles2 context: %s\n", error->message);
}
gles2->glReadPixels (0, 0, 1, 1, GL_RGB, GL_UNSIGNED_BYTE, &pixel);
g_assert (pixel[0] == 0);
g_assert (pixel[1] == 0xff);
g_assert (pixel[2] == 0xff);
cogl_pop_gles2_context (test_ctx);
test_utils_check_pixel (test_fb, 0, 0, 0xffffffff);
/* Bind different read and write buffers (the other way around from
* before so when we test with COGL_TEST_ONSCREEN=1 we will read
* from an onscreen framebuffer) */
if (!cogl_push_gles2_context (test_ctx,
gles2_ctx,
test_fb,
COGL_FRAMEBUFFER (offscreen),
&error))
{
g_error ("Failed to push gles2 context: %s\n", error->message);
}
gles2->glReadPixels (0, 0, 1, 1, GL_RGB, GL_UNSIGNED_BYTE, &pixel);
g_assert (pixel[0] == 0xff);
g_assert (pixel[1] == 0xff);
g_assert (pixel[2] == 0xff);
cogl_pop_gles2_context (test_ctx);
}
static void
test_push_pop_multi_context (void)
{
CoglTexture *offscreen_texture0;
CoglOffscreen *offscreen0;
CoglPipeline *pipeline0;
CoglGLES2Context *gles2_ctx0;
const CoglGLES2Vtable *gles20;
CoglTexture *offscreen_texture1;
CoglOffscreen *offscreen1;
CoglPipeline *pipeline1;
CoglGLES2Context *gles2_ctx1;
const CoglGLES2Vtable *gles21;
GError *error = NULL;
create_gles2_context (&offscreen_texture0,
&offscreen0,
&pipeline0,
&gles2_ctx0,
&gles20);
create_gles2_context (&offscreen_texture1,
&offscreen1,
&pipeline1,
&gles2_ctx1,
&gles21);
cogl_framebuffer_clear4f (test_fb, COGL_BUFFER_BIT_COLOR, 1, 1, 1, 1);
if (!cogl_push_gles2_context (test_ctx,
gles2_ctx0,
COGL_FRAMEBUFFER (offscreen0),
COGL_FRAMEBUFFER (offscreen0),
&error))
{
g_error ("Failed to push gles2 context 0: %s\n", error->message);
}
gles20->glClearColor (1, 0, 0, 1);
gles20->glClear (GL_COLOR_BUFFER_BIT);
if (!cogl_push_gles2_context (test_ctx,
gles2_ctx1,
COGL_FRAMEBUFFER (offscreen1),
COGL_FRAMEBUFFER (offscreen1),
&error))
{
g_error ("Failed to push gles2 context 1: %s\n", error->message);
}
gles21->glClearColor (0, 1, 0, 1);
gles21->glClear (GL_COLOR_BUFFER_BIT);
cogl_pop_gles2_context (test_ctx);
cogl_pop_gles2_context (test_ctx);
test_utils_check_pixel (test_fb, 0, 0, 0xffffffff);
cogl_framebuffer_draw_rectangle (test_fb,
pipeline0,
-1, 1, 1, -1);
test_utils_check_pixel (test_fb, 0, 0, 0xff0000ff);
cogl_framebuffer_draw_rectangle (test_fb,
pipeline1,
-1, 1, 1, -1);
test_utils_check_pixel (test_fb, 0, 0, 0x00ff00ff);
}
static void
test_push_pop_single_context (void)
{
CoglTexture *offscreen_texture;
CoglOffscreen *offscreen;
CoglPipeline *pipeline;
CoglGLES2Context *gles2_ctx;
const CoglGLES2Vtable *gles2;
GError *error = NULL;
offscreen_texture = COGL_TEXTURE (
cogl_texture_2d_new_with_size (test_ctx,
cogl_framebuffer_get_width (test_fb),
cogl_framebuffer_get_height (test_fb),
COGL_PIXEL_FORMAT_ANY,
NULL));
offscreen = cogl_offscreen_new_to_texture (offscreen_texture);
pipeline = cogl_pipeline_new (test_ctx);
cogl_pipeline_set_layer_texture (pipeline, 0, offscreen_texture);
gles2_ctx = cogl_gles2_context_new (test_ctx, &error);
if (!gles2_ctx)
g_error ("Failed to create GLES2 context: %s\n", error->message);
gles2 = cogl_gles2_context_get_vtable (gles2_ctx);
/* Clear onscreen to 0xffff00 using GLES2 */
if (!cogl_push_gles2_context (test_ctx,
gles2_ctx,
test_fb,
test_fb,
&error))
{
g_error ("Failed to push gles2 context: %s\n", error->message);
}
gles2->glClearColor (1, 1, 0, 1);
gles2->glClear (GL_COLOR_BUFFER_BIT);
cogl_pop_gles2_context (test_ctx);
test_utils_check_pixel (test_fb, 0, 0, 0xffff00ff);
/* Clear offscreen to 0xff0000 using GLES2 and then copy the result
* onscreen.
*
* If we fail to bind the new context here then we'd probably end up
* clearing onscreen to 0xff0000 and copying 0xffff00 to onscreen
* instead.
*/
if (!cogl_push_gles2_context (test_ctx,
gles2_ctx,
COGL_FRAMEBUFFER (offscreen),
COGL_FRAMEBUFFER (offscreen),
&error))
{
g_error ("Failed to push gles2 context: %s\n", error->message);
}
gles2->glClearColor (1, 0, 0, 1);
gles2->glClear (GL_COLOR_BUFFER_BIT);
cogl_pop_gles2_context (test_ctx);
cogl_framebuffer_draw_rectangle (test_fb,
pipeline,
-1, 1, 1, -1);
/* NB: Cogl doesn't automatically support mid-scene modifications
* of textures and so we explicitly flush the drawn rectangle to the
* framebuffer now otherwise it may be batched until after the
* offscreen texture has been modified again. */
cogl_flush ();
/* Clear the offscreen framebuffer to blue using GLES2 before
* reading back from the onscreen framebuffer in case we mistakenly
* read from the offscreen framebuffer and get a false positive
*/
if (!cogl_push_gles2_context (test_ctx,
gles2_ctx,
COGL_FRAMEBUFFER (offscreen),
COGL_FRAMEBUFFER (offscreen),
&error))
{
g_error ("Failed to push gles2 context: %s\n", error->message);
}
gles2->glClearColor (0, 0, 1, 1);
gles2->glClear (GL_COLOR_BUFFER_BIT);
cogl_pop_gles2_context (test_ctx);
test_utils_check_pixel (test_fb, 0, 0, 0xff0000ff);
/* Now copy the offscreen blue clear to the onscreen framebufer and
* check that too */
cogl_framebuffer_draw_rectangle (test_fb,
pipeline,
-1, 1, 1, -1);
test_utils_check_pixel (test_fb, 0, 0, 0x0000ffff);
if (!cogl_push_gles2_context (test_ctx,
gles2_ctx,
test_fb,
test_fb,
&error))
{
g_error ("Failed to push gles2 context: %s\n", error->message);
}
gles2->glClearColor (1, 0, 1, 1);
gles2->glClear (GL_COLOR_BUFFER_BIT);
cogl_pop_gles2_context (test_ctx);
test_utils_check_pixel (test_fb, 0, 0, 0xff00ffff);
cogl_object_unref (gles2_ctx);
cogl_object_unref (pipeline);
}
