Change Tilemap to use 8x8 tiles

yuriks · May 28, 2011 · 4ccd9f5 · 4ccd9f5
1 parent ff71383
commit 4ccd9f5
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/tilemap_shader.frag b/tilemap_shader.frag
@@ -9,11 +9,11 @@ out vec4 out_Color;
 
 void main(void) {
 	ivec2 tile_pos = ivec2(vf_TilePos) + u_Offset;
-	ivec2 pos_tile = (tile_pos >> 4) % textureSize(u_Tilemap, 0);
-	ivec2 pos_offset = tile_pos & 0xF;
+	ivec2 pos_tile = (tile_pos >> 3) % textureSize(u_Tilemap, 0);
+	ivec2 pos_offset = tile_pos & 0x7;
 	uint tile_num = texelFetch(u_Tilemap, pos_tile, 0).r;
-	uint tileset_width = uint(textureSize(u_Tex0, 0).x >> 4);
+	uint tileset_width = uint(textureSize(u_Tex0, 0).x >> 3);
 	uint div = tile_num / tileset_width;
-	ivec2 tile_texel = ivec2(tile_num - (div * tileset_width), div) << 4;
+	ivec2 tile_texel = ivec2(tile_num - (div * tileset_width), div) << 3;
 	out_Color = texelFetch(u_Tex0, tile_texel + pos_offset, 0);
 }