Mercurial > hg > ascension / file diff

--- a/src/texture.c	Sun May 11 14:51:00 2025 +0200
+++ b/src/texture.c	Mon May 12 20:51:57 2025 +0200
@@ -162,3 +162,16 @@
     }
     glDeleteTextures(count, textures);
 }
+
+asc_vec2f asc_texture_calculate_uv_scale(const AscTexture *tex, asc_vec2u surface_dimension, asc_vec2f factors) {
+    if (surface_dimension.width == 0 || surface_dimension.height == 0) {
+        asc_wprintf("Tried to calculate UV scale for texture %u with zero dimensions.", tex->tex_id);
+        return factors;
+    }
+    asc_vec2f uv_scale = factors;
+    uv_scale.u *= (float) tex->width;
+    uv_scale.u /= (float) surface_dimension.width;
+    uv_scale.v *= (float) tex->height;
+    uv_scale.v /= (float) surface_dimension.height;
+    return uv_scale;
+}