mirror of
https://github.com/brl/mutter.git
synced 2024-12-11 22:10:16 +00:00
eb14da3874
A first step towards abandoning the CoglObject type system: convert CoglFramebuffer, CoglOffscreen and CoglOnscreen into GObjects. CoglFramebuffer is turned into an abstract GObject, while the two others are currently final. The "winsys" and "platform" are still sprinkled 'void *' in the the non-abstract type instances however. https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1496
95 lines
3.0 KiB
C
95 lines
3.0 KiB
C
#include <cogl/cogl.h>
|
|
|
|
#include <string.h>
|
|
|
|
#include "test-declarations.h"
|
|
#include "test-utils.h"
|
|
|
|
void
|
|
test_pipeline_shader_state (void)
|
|
{
|
|
CoglOffscreen *offscreen;
|
|
CoglFramebuffer *fb;
|
|
CoglPipeline *base_pipeline;
|
|
CoglPipeline *draw_pipeline;
|
|
CoglTexture2D *tex;
|
|
CoglSnippet *snippet;
|
|
|
|
float width = cogl_framebuffer_get_width (test_fb);
|
|
float height = cogl_framebuffer_get_height (test_fb);
|
|
|
|
cogl_framebuffer_orthographic (test_fb,
|
|
0, 0, width, height,
|
|
-1,
|
|
100);
|
|
|
|
tex = cogl_texture_2d_new_with_size (test_ctx, 128, 128);
|
|
offscreen = cogl_offscreen_new_with_texture (tex);
|
|
fb = COGL_FRAMEBUFFER (offscreen);
|
|
cogl_framebuffer_clear4f (fb, COGL_BUFFER_BIT_COLOR, 0, 0, 0, 1);
|
|
g_object_unref (offscreen);
|
|
|
|
cogl_framebuffer_clear4f (test_fb, COGL_BUFFER_BIT_COLOR, 1, 1, 0, 1);
|
|
|
|
|
|
/* Setup a template pipeline... */
|
|
|
|
base_pipeline = cogl_pipeline_new (test_ctx);
|
|
cogl_pipeline_set_layer_texture (base_pipeline, 1, tex);
|
|
cogl_pipeline_set_color4f (base_pipeline, 1, 0, 0, 1);
|
|
|
|
|
|
/* Derive a pipeline from the template, making a change that affects
|
|
* fragment processing but making sure not to affect vertex
|
|
* processing... */
|
|
|
|
draw_pipeline = cogl_pipeline_copy (base_pipeline);
|
|
snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_FRAGMENT,
|
|
NULL, /* declarations */
|
|
"cogl_color_out = vec4 (0.0, 1.0, 0.1, 1.1);");
|
|
cogl_pipeline_add_snippet (draw_pipeline, snippet);
|
|
cogl_object_unref (snippet);
|
|
|
|
cogl_framebuffer_draw_rectangle (test_fb, draw_pipeline,
|
|
0, 0, width, height);
|
|
|
|
cogl_object_unref (draw_pipeline);
|
|
|
|
cogl_framebuffer_finish (test_fb);
|
|
|
|
|
|
/* At this point we should have provoked cogl to cache some vertex
|
|
* shader state for the draw_pipeline with the base_pipeline because
|
|
* none of the changes made to the draw_pipeline affected vertex
|
|
* processing. (NB: cogl will cache shader state with the oldest
|
|
* ancestor that the state is still valid for to maximize the chance
|
|
* that it can be used with other derived pipelines)
|
|
*
|
|
* Now we make a change to the base_pipeline to make sure that this
|
|
* cached vertex shader gets invalidated.
|
|
*/
|
|
|
|
cogl_pipeline_set_layer_texture (base_pipeline, 0, tex);
|
|
|
|
|
|
/* Now we derive another pipeline from base_pipeline to verify that
|
|
* it doesn't end up re-using the old cached state
|
|
*/
|
|
|
|
draw_pipeline = cogl_pipeline_copy (base_pipeline);
|
|
snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_FRAGMENT,
|
|
NULL, /* declarations */
|
|
"cogl_color_out = vec4 (0.0, 0.0, 1.1, 1.1);");
|
|
cogl_pipeline_add_snippet (draw_pipeline, snippet);
|
|
cogl_object_unref (snippet);
|
|
|
|
cogl_framebuffer_draw_rectangle (test_fb, draw_pipeline,
|
|
0, 0, width, height);
|
|
|
|
cogl_object_unref (draw_pipeline);
|
|
|
|
|
|
test_utils_check_region (test_fb, 0, 0, width, height,
|
|
0x0000ffff);
|
|
}
|