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fix test to work with sideways surface buffers

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Gered 2015-01-18 23:15:32 -05:00
parent 5d6519a8be
commit 495b64a855
1 changed files with 9 additions and 1 deletions
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10
test/test_surfaces.c
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@ -79,7 +79,11 @@ void test_coords_and_offsets(SURFACE_FLAGS flags) {
COLOR color = color_create_rgba(0, 255, 0, 255);
int x = 3;
int y = 42;
uint32_t index = (surface->x_inc * 3) + (surface->y_inc * 42);
// NOTE: due to the way that surfaces created with SURFACE_FLAGS_SIDEWAYS_BUFFER
// after indexed, it is important to start off with a calculated index via
// this function. then you can modify the index via x_inc and y_inc
// (x = 0, y = 0 is _not_ equal to index = 0 in a sideways buffer)
uint32_t index = surface_get_index_of(surface, x, y);
// testing first sets a pixel using x,y coordinates, then reads
// it back using an offset set to be equivalent to the x,y coords
@ -122,9 +126,13 @@ void test_coords_and_offsets(SURFACE_FLAGS flags) {
int main(int argc, char **argv) {
test_coords_and_offsets(SURFACE_FLAGS_NONE);
test_coords_and_offsets(SURFACE_FLAGS_SIDEWAYS_BUFFER);
test_rgba(SURFACE_FLAGS_NONE);
test_rgba(SURFACE_FLAGS_SIDEWAYS_BUFFER);
test_rgb(SURFACE_FLAGS_NONE);
test_rgb(SURFACE_FLAGS_SIDEWAYS_BUFFER);
test_alpha(SURFACE_FLAGS_NONE);
test_alpha(SURFACE_FLAGS_SIDEWAYS_BUFFER);
return 0;
}