a-game

commit fd494c04be18034d98aded0809ba4812018b4d3e
parent 442dcd3a62736a2519b63232074a71ae6c63638c
Author: Amin Mesbah <dev@aminmesbah.com>
Date:   Mon, 15 Jul 2019 19:35:29 -0700

Actually allocate space for mipmaps

Now the tiles look nice again!

Diffstat:
M
src/render.c
 | 
11
++++++-----

1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/src/render.c b/src/render.c
@@ -57,7 +57,8 @@ internal void renderer_init(struct RendererState *renderer, struct Image *images
         u32 texture_id;
         glGenTextures(1, &texture_id);
         glBindTexture(GL_TEXTURE_2D_ARRAY, texture_id);
-        glTexStorage3D(GL_TEXTURE_2D_ARRAY, 1, GL_RGBA8, tile_dim.x, tile_dim.y, tileset_dim.x * tileset_dim.y);
+        u32 mip_map_levels = 4;
+        glTexStorage3D(GL_TEXTURE_2D_ARRAY, mip_map_levels, GL_RGBA8, tile_dim.x, tile_dim.y, tileset_dim.x * tileset_dim.y);
 
         size_t marker = mem_st_get_marker(allocator);
         {
@@ -100,11 +101,11 @@ internal void renderer_init(struct RendererState *renderer, struct Image *images
         }
         mem_st_free_to_marker(allocator, marker);
 
-        // TODO: fix the _hideous_ aliasing that happens when scaling down.
-        glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+        glGenerateMipmap(GL_TEXTURE_2D_ARRAY);
+        glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+        glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+        glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
         glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 
         glActiveTexture(GL_TEXTURE0);
     }