Support textures filtering

1 files changed, 82 insertions, 6 deletions

diff --git a/src/textures.c b/src/textures.c
index 867e565d..729756a5 100644
--- a/src/textures.c
+++ b/src/textures.c
@@ -442,18 +442,94 @@ void UnloadRenderTexture(RenderTexture2D target)
     if (target.id != 0) rlDeleteRenderTextures(target);
 }
 
-// Set texture scale filter
+// Set texture scaling filter mode
 void SetTextureFilter(Texture2D texture, int filterMode)
 {
-    rlTextureParameters(texture.id, RL_TEXTURE_MIN_FILTER, filterMode);
-    rlTextureParameters(texture.id, RL_TEXTURE_MAG_FILTER, filterMode);
+    switch (filterMode)
+    {
+        case FILTER_POINT:
+        {
+            if (texture.mipmaps > 1)
+            {
+                // RL_FILTER_MIP_NEAREST - tex filter: POINT, mipmaps filter: POINT (sharp switching between mipmaps)
+                rlTextureParameters(texture.id, RL_TEXTURE_MIN_FILTER, RL_FILTER_MIP_NEAREST);
+                
+                // RL_FILTER_NEAREST - tex filter: POINT (no filter), no mipmaps
+                rlTextureParameters(texture.id, RL_TEXTURE_MAG_FILTER, RL_FILTER_NEAREST);
+            }
+            else
+            {
+                // RL_FILTER_NEAREST - tex filter: POINT (no filter), no mipmaps
+                rlTextureParameters(texture.id, RL_TEXTURE_MIN_FILTER, RL_FILTER_NEAREST);
+                rlTextureParameters(texture.id, RL_TEXTURE_MAG_FILTER, RL_FILTER_NEAREST);
+            }
+        } break;
+        case FILTER_BILINEAR:
+        {
+            if (texture.mipmaps > 1)
+            {
+                // RL_FILTER_LINEAR_MIP_NEAREST - tex filter: BILINEAR, mipmaps filter: POINT (sharp switching between mipmaps)
+                // Alternative: RL_FILTER_NEAREST_MIP_LINEAR - tex filter: POINT, mipmaps filter: BILINEAR (smooth transition between mipmaps)
+                rlTextureParameters(texture.id, RL_TEXTURE_MIN_FILTER, RL_FILTER_LINEAR_MIP_NEAREST);
+                
+                // RL_FILTER_LINEAR - tex filter: BILINEAR, no mipmaps
+                rlTextureParameters(texture.id, RL_TEXTURE_MAG_FILTER, RL_FILTER_LINEAR);
+            }
+            else
+            {
+                // RL_FILTER_LINEAR - tex filter: BILINEAR, no mipmaps
+                rlTextureParameters(texture.id, RL_TEXTURE_MIN_FILTER, RL_FILTER_LINEAR);
+                rlTextureParameters(texture.id, RL_TEXTURE_MAG_FILTER, RL_FILTER_LINEAR);
+            }
+        } break;
+        case FILTER_TRILINEAR:
+        {
+            if (texture.mipmaps > 1)
+            {
+                // RL_FILTER_MIP_LINEAR - tex filter: BILINEAR, mipmaps filter: BILINEAR (smooth transition between mipmaps)
+                rlTextureParameters(texture.id, RL_TEXTURE_MIN_FILTER, RL_FILTER_MIP_LINEAR);
+                
+                // RL_FILTER_LINEAR - tex filter: BILINEAR, no mipmaps
+                rlTextureParameters(texture.id, RL_TEXTURE_MAG_FILTER, RL_FILTER_LINEAR);
+            }
+            else
+            {
+                TraceLog(WARNING, "[TEX ID %i] No mipmaps available for TRILINEAR texture filtering", texture.id);
+                
+                // RL_FILTER_LINEAR - tex filter: BILINEAR, no mipmaps
+                rlTextureParameters(texture.id, RL_TEXTURE_MIN_FILTER, RL_FILTER_LINEAR);
+                rlTextureParameters(texture.id, RL_TEXTURE_MAG_FILTER, RL_FILTER_LINEAR);
+            }
+        } break;
+        case FILTER_ANISOTROPIC_4X: rlTextureParameters(texture.id, RL_TEXTURE_ANISOTROPIC_FILTER, 4); break;
+        case FILTER_ANISOTROPIC_8X: rlTextureParameters(texture.id, RL_TEXTURE_ANISOTROPIC_FILTER, 8); break;
+        case FILTER_ANISOTROPIC_16X: rlTextureParameters(texture.id, RL_TEXTURE_ANISOTROPIC_FILTER, 16); break;
+        default: break;
+    }
 }
 
-// Set texture wrap mode
+// Set texture wrapping mode
 void SetTextureWrap(Texture2D texture, int wrapMode)
 {
-    rlTextureParameters(texture.id, RL_TEXTURE_WRAP_S, wrapMode);
-    rlTextureParameters(texture.id, RL_TEXTURE_WRAP_T, wrapMode);
+    switch (wrapMode)
+    {
+        case WRAP_REPEAT:
+        {
+            rlTextureParameters(texture.id, RL_TEXTURE_WRAP_S, RL_WRAP_REPEAT);
+            rlTextureParameters(texture.id, RL_TEXTURE_WRAP_T, RL_WRAP_REPEAT);
+        } break;
+        case WRAP_CLAMP:
+        {
+            rlTextureParameters(texture.id, RL_TEXTURE_WRAP_S, RL_WRAP_CLAMP);
+            rlTextureParameters(texture.id, RL_TEXTURE_WRAP_T, RL_WRAP_CLAMP);
+        } break;
+        case WRAP_MIRROR:
+        {
+            rlTextureParameters(texture.id, RL_TEXTURE_WRAP_S, RL_WRAP_CLAMP_MIRROR);
+            rlTextureParameters(texture.id, RL_TEXTURE_WRAP_T, RL_WRAP_CLAMP_MIRROR);
+        } break;
+        default: break;
+    }
 }
 
 // Get pixel data from image in the form of Color struct array