Add basic block textures

- Remove the code that sent colors through uniform variables, instead
  send texture data
- Each vertex now has a texture coordinate
- struct texture is a easy way to represent textures, can be extended
  later
- Shaders updated to use textures

1 files changed, 1 insertions, 0 deletions

diff --git a/src/engine.h b/src/engine.h
index 92689dd..3248d40 100644
--- a/src/engine.h
+++ b/src/engine.h
@@ -15,6 +15,7 @@ struct engine {
     struct window* window;
     struct shader* shader;
     struct camera* camera;
+    struct texture* texture;
     int game_loop;
     int curr_chunk[2];
     struct world* world;