- void
- put_tile_z(unsigned x, unsigned y, unsigned w, unsigned h, const unsigned *z) {
- pipe_put_tile_z($self, x, y, w, h, z);
- }
-
- void
- sample_rgba(float *rgba) {
- st_sample_surface($self, rgba);
- }
-
- unsigned
- compare_tile_rgba(unsigned x, unsigned y, unsigned w, unsigned h, const float *rgba, float tol = 0.0)
- {
- float *rgba2;
- const float *p1;
- const float *p2;
- unsigned i, j, n;
-
- rgba2 = MALLOC(h*w*4*sizeof(float));
- if(!rgba2)
- return ~0;
-
- pipe_get_tile_rgba($self, x, y, w, h, rgba2);
-
- p1 = rgba;
- p2 = rgba2;
- n = 0;
- for(i = h*w; i; --i) {
- unsigned differs = 0;
- for(j = 4; j; --j) {
- float delta = *p2++ - *p1++;
- if (delta < -tol || delta > tol)
- differs = 1;
- }
- n += differs;
- }
-
- FREE(rgba2);
-
- return n;
- }