Ejemplo n.º 1
0
static void
do_texture_setup(void)
{
	GLuint tex;
	GLenum target = target_for_sampler[sampler];
	pixels = malloc(components * sizeof(unsigned char) * texture_width * texture_height);
	expected = malloc(4 * sizeof(float) * texture_width * texture_height);

	glGenTextures(1, &tex);
	glBindTexture(target, tex);

	make_image(components, channel_to_fill());
	make_expected();

	switch(sampler) {
	case SAMPLER_2D:
	case SAMPLER_2DRECT:
		upload_2d(target, pixels);
		break;
	case SAMPLER_2DARRAY:
		upload_3d(target, NULL);
		upload_array_slice(target, 1, pixels);
		break;
	case SAMPLER_CUBE:
		/* legacy cubes are weird. the only sane way to specify the whole
		 * thing at once is using glTexStorage, and we'd rather not rely on
		 * ARB_texture_storage just for that. */
		upload_2d(GL_TEXTURE_CUBE_MAP_NEGATIVE_X, NULL);
		upload_2d(GL_TEXTURE_CUBE_MAP_POSITIVE_X, NULL);
		upload_2d(GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, NULL);
		upload_2d(GL_TEXTURE_CUBE_MAP_POSITIVE_Y, NULL);
		upload_2d(GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, NULL);
		upload_2d(GL_TEXTURE_CUBE_MAP_POSITIVE_Z, pixels);
		break;
	case SAMPLER_CUBEARRAY:
		upload_3d(target, NULL);
		upload_array_slice(target, 10, pixels);
		break;
	}

	glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
	glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);

	if (comptype == SHADOW_T) {
		glTexParameteri(target_for_sampler[sampler], GL_TEXTURE_COMPARE_MODE,
				GL_COMPARE_R_TO_TEXTURE);
		glTexParameteri(target_for_sampler[sampler], GL_TEXTURE_COMPARE_FUNC,
				GL_LESS);
	}

	glTexParameteri(target_for_sampler[sampler], GL_TEXTURE_WRAP_S, address_mode);
	glTexParameteri(target_for_sampler[sampler], GL_TEXTURE_WRAP_T, address_mode);
	glTexParameteri(target_for_sampler[sampler], GL_TEXTURE_WRAP_R, address_mode);
}
Ejemplo n.º 2
0
 expected<T> make_expected(optional<T> v) {
   if (v) return make_expected(*v);
   else make_unexpected(conversion_from_nullopt());
 }