36 FlBackingStoreProvider* provider = FL_BACKING_STORE_PROVIDER(
37 g_object_new(fl_backing_store_provider_get_type(),
nullptr));
39 provider->geometry = {
46 glGenTextures(1, &provider->texture_id);
47 glGenFramebuffers(1, &provider->framebuffer_id);
49 glBindFramebuffer(GL_FRAMEBUFFER, provider->framebuffer_id);
51 glBindTexture(GL_TEXTURE_2D, provider->texture_id);
52 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
53 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
54 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
55 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
56 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8,
width,
height, 0, GL_RGBA,
57 GL_UNSIGNED_BYTE, NULL);
58 glBindTexture(GL_TEXTURE_2D, 0);
60 glFramebufferTexture2D(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
61 GL_TEXTURE_2D, provider->texture_id, 0);