REVIEWED: SetShapesTexture(), allow reseting

src/rshapes.c

@@ -80,7 +80,7 @@
 //----------------------------------------------------------------------------------
 // Global Variables Definition
 //----------------------------------------------------------------------------------
-Texture2D texShapes = { 1, 1, 1, 1, 7 };                // Texture used on shapes drawing (usually a white pixel)
+Texture2D texShapes = { 1, 1, 1, 1, 7 };                // Texture used on shapes drawing (white pixel loaded by rlgl)
 Rectangle texShapesRec = { 0.0f, 0.0f, 1.0f, 1.0f };    // Texture source rectangle used on shapes drawing
 
 //----------------------------------------------------------------------------------
@@ -96,10 +96,21 @@ static float EaseCubicInOut(float t, float b, float c, float d);    // Cubic eas
 // NOTE: It can be useful when using basic shapes and one single font,
 // defining a font char white rectangle would allow drawing everything in a single draw call
 void SetShapesTexture(Texture2D texture, Rectangle source)
+{
+    // Reset texture to default pixel if required
+    // WARNING: Shapes texture should be probably better validated,
+    // it can break the rendering of all shapes if missused
+    if ((texture.id == 0) || (source.width == 0) || (source.height == 0))
+    {
+        texShapes = (Texture2D){ 1, 1, 1, 1, 7 };
+        texShapesRec = (Rectangle){ 0.0f, 0.0f, 1.0f, 1.0f };
+    }
+    else
     {
         texShapes = texture;
         texShapesRec = source;
     }
+}
 
 // Draw a pixel
 void DrawPixel(int posX, int posY, Color color)