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examples: use framebuffer matrix stack apis

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Instead of using apis like cogl_push/pop_matrix, cogl_rotate,
cogl_translate and cogl_scale all the examples now use the
cogl_framebuffer_* equivalents. Our aim is to remove the need for the
default CoglContext and so we are switching towards apis that
are explicitly tied to a specific context.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
This commit is contained in:
Robert Bragg 2012-01-07 23:48:08 +00:00
parent 7287dd1faf
commit 0365f6cda3
3 changed files with 23 additions and 17 deletions
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20
examples/cogl-crate.c
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@ -81,17 +81,21 @@ static CoglVertexP3T2 vertices[] =
static void
paint (Data *data)
{
CoglFramebuffer *fb = data->fb;
float rotation;
cogl_framebuffer_clear4f (data->fb,
cogl_framebuffer_clear4f (fb,
COGL_BUFFER_BIT_COLOR|COGL_BUFFER_BIT_DEPTH,
0, 0, 0, 1);
cogl_push_matrix ();
cogl_framebuffer_push_matrix (fb);
cogl_translate (data->framebuffer_width / 2, data->framebuffer_height / 2, 0);
cogl_framebuffer_translate (fb,
data->framebuffer_width / 2,
data->framebuffer_height / 2,
0);
cogl_scale (75, 75, 75);
cogl_framebuffer_scale (fb, 75, 75, 75);
/* Update the rotation based on the time the application has been
running so that we get a linear animation regardless of the frame
@ -107,9 +111,9 @@ paint (Data *data)
* we want it to be a rotation around the origin, before it is
* scaled and translated.
*/
cogl_rotate (rotation, 0, 0, 1);
cogl_rotate (rotation, 0, 1, 0);
cogl_rotate (rotation, 1, 0, 0);
cogl_framebuffer_rotate (fb, rotation, 0, 0, 1);
cogl_framebuffer_rotate (fb, rotation, 0, 1, 0);
cogl_framebuffer_rotate (fb, rotation, 1, 0, 0);
/* Whenever you draw something with Cogl using geometry defined by
* one of cogl_rectangle, cogl_polygon, cogl_path or
@ -125,7 +129,7 @@ paint (Data *data)
cogl_set_depth_test_enabled (FALSE);
cogl_pop_matrix ();
cogl_framebuffer_pop_matrix (fb);
/* And finally render our Pango layouts... */

8
examples/cogl-msaa.c
View file

@ -90,12 +90,12 @@ main (int argc, char **argv)
cogl_framebuffer_clear4f (fb, COGL_BUFFER_BIT_COLOR, 0, 0, 0, 1);
cogl_push_matrix ();
cogl_scale (0.5, 1, 1);
cogl_translate (-1, 0, 0);
cogl_framebuffer_push_matrix (fb);
cogl_framebuffer_scale (fb, 0.5, 1, 1);
cogl_framebuffer_translate (fb, -1, 0, 0);
cogl_set_source (pipeline);
cogl_primitive_draw (triangle);
cogl_pop_matrix ();
cogl_framebuffer_pop_matrix (fb);
cogl_push_framebuffer (offscreen_fb);
cogl_primitive_draw (triangle);

12
examples/cogl-sdl-hello.c
View file

@ -17,15 +17,17 @@ typedef struct Data
static void
redraw (Data *data)
{
cogl_framebuffer_clear4f (data->fb, COGL_BUFFER_BIT_COLOR, 0, 0, 0, 1);
CoglFramebuffer *fb = data->fb;
cogl_push_matrix ();
cogl_translate (data->center_x, -data->center_y, 0.0f);
cogl_framebuffer_clear4f (fb, COGL_BUFFER_BIT_COLOR, 0, 0, 0, 1);
cogl_framebuffer_push_matrix (fb);
cogl_framebuffer_translate (fb, data->center_x, -data->center_y, 0.0f);
cogl_primitive_draw (data->triangle);
cogl_pop_matrix ();
cogl_framebuffer_pop_matrix (fb);
cogl_framebuffer_swap_buffers (data->fb);
cogl_framebuffer_swap_buffers (fb);
}
static void