mirror of
https://github.com/brl/mutter.git
synced 2024-11-27 02:20:43 -05:00
405cacabe2
This adds a very basic test of onscreen and offscreen multisample rendering with 4 samples per pixel. The test simply draws two triangles; the one on the left is rendered directly to the onscreen framebuffer and the other is first rendered offscreen before copying it onscreen. Reviewed-by: Neil Roberts <neil@linux.intel.com>
113 lines
3.3 KiB
C
113 lines
3.3 KiB
C
#include <cogl/cogl.h>
|
|
#include <glib.h>
|
|
#include <stdio.h>
|
|
|
|
CoglColor black;
|
|
|
|
int
|
|
main (int argc, char **argv)
|
|
{
|
|
CoglOnscreenTemplate *onscreen_template;
|
|
CoglDisplay *display;
|
|
CoglContext *ctx;
|
|
CoglOnscreen *onscreen;
|
|
CoglFramebuffer *fb;
|
|
GError *error = NULL;
|
|
CoglVertexP2C4 triangle_vertices[] = {
|
|
{0, 0.7, 0xff, 0x00, 0x00, 0x80},
|
|
{-0.7, -0.7, 0x00, 0xff, 0x00, 0xff},
|
|
{0.7, -0.7, 0x00, 0x00, 0xff, 0xff}
|
|
};
|
|
CoglPrimitive *triangle;
|
|
CoglHandle tex;
|
|
CoglHandle offscreen;
|
|
CoglFramebuffer *offscreen_fb;
|
|
CoglPipeline *pipeline;
|
|
|
|
onscreen_template = cogl_onscreen_template_new (NULL);
|
|
cogl_onscreen_template_set_samples_per_pixel (onscreen_template, 4);
|
|
display = cogl_display_new (NULL, onscreen_template);
|
|
|
|
if (!cogl_display_setup (display, &error))
|
|
{
|
|
fprintf (stderr, "Platform doesn't support onscreen 4x msaa rendering: %s\n",
|
|
error->message);
|
|
return 1;
|
|
}
|
|
|
|
ctx = cogl_context_new (display, &error);
|
|
if (!ctx)
|
|
{
|
|
fprintf (stderr, "Failed to create context: %s\n", error->message);
|
|
return 1;
|
|
}
|
|
|
|
onscreen = cogl_onscreen_new (ctx, 640, 480);
|
|
/* Eventually there will be an implicit allocate on first use so this
|
|
* will become optional... */
|
|
fb = COGL_FRAMEBUFFER (onscreen);
|
|
|
|
cogl_framebuffer_set_samples_per_pixel (fb, 4);
|
|
|
|
if (!cogl_framebuffer_allocate (fb, &error))
|
|
{
|
|
g_error_free (error);
|
|
fprintf (stderr, "Failed to allocate 4x msaa offscreen framebuffer, "
|
|
"disabling msaa for onscreen rendering\n");
|
|
cogl_framebuffer_set_samples_per_pixel (fb, 0);
|
|
|
|
error = NULL;
|
|
if (!cogl_framebuffer_allocate (fb, &error))
|
|
{
|
|
fprintf (stderr, "Failed to allocate framebuffer: %s\n", error->message);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
cogl_onscreen_show (onscreen);
|
|
|
|
tex = cogl_texture_new_with_size (320, 480,
|
|
COGL_TEXTURE_NO_SLICING,
|
|
COGL_PIXEL_FORMAT_ANY);
|
|
offscreen = cogl_offscreen_new_to_texture (tex);
|
|
offscreen_fb = COGL_FRAMEBUFFER (offscreen);
|
|
cogl_framebuffer_set_samples_per_pixel (offscreen_fb, 4);
|
|
if (!cogl_framebuffer_allocate (offscreen_fb, &error))
|
|
{
|
|
g_error_free (error);
|
|
error = NULL;
|
|
fprintf (stderr, "Failed to allocate 4x msaa offscreen framebuffer, "
|
|
"disabling msaa for offscreen rendering");
|
|
cogl_framebuffer_set_samples_per_pixel (offscreen_fb, 0);
|
|
}
|
|
|
|
cogl_push_framebuffer (fb);
|
|
|
|
triangle = cogl_primitive_new_p2c4 (COGL_VERTICES_MODE_TRIANGLES,
|
|
3, triangle_vertices);
|
|
pipeline = cogl_pipeline_new ();
|
|
|
|
for (;;) {
|
|
cogl_clear (&black, COGL_BUFFER_BIT_COLOR);
|
|
|
|
cogl_push_matrix ();
|
|
cogl_scale (0.5, 1, 1);
|
|
cogl_translate (-1, 0, 0);
|
|
cogl_set_source (pipeline);
|
|
cogl_primitive_draw (triangle);
|
|
cogl_pop_matrix ();
|
|
|
|
cogl_push_framebuffer (offscreen_fb);
|
|
cogl_primitive_draw (triangle);
|
|
cogl_framebuffer_resolve_samples (offscreen_fb);
|
|
cogl_pop_framebuffer ();
|
|
|
|
cogl_set_source_texture (tex);
|
|
cogl_rectangle (0, 1, 1, -1);
|
|
|
|
cogl_framebuffer_swap_buffers (fb);
|
|
}
|
|
|
|
return 0;
|
|
}
|