Added UI Scaling support

src/dawnopengl/display/BackBufferRenderTarget.cpp

@@ -12,6 +12,10 @@ BackBufferRenderTarget::BackBufferRenderTarget(RenderManager &renderManager) :
 {
 }
 
+float_t BackBufferRenderTarget::getScale() {
+  return this->scale;
+}
+
 float_t BackBufferRenderTarget::getWidth() {
   return this->width;
 }

src/dawnopengl/display/BackBufferRenderTarget.hpp

@@ -19,6 +19,8 @@ namespace Dawn {
       struct Color clearColor = COLOR_CORNFLOWER_BLUE;
 
     public:
+      float_t scale = 1.0f;
+
       /**
        * Construct the back buffer render target.
        * 
@@ -38,6 +40,7 @@ namespace Dawn {
        */
       void setSize(float_t width, float_t height);
 
+      float_t getScale() override;
       float_t getWidth() override;
       float_t getHeight() override;
       void setClearColor(struct Color color) override;

src/dawnopengl/display/TextureRenderTarget.cpp

@@ -64,6 +64,10 @@ void TextureRenderTarget::setSize(float_t width, float_t height) {
   }
 }
 
+float_t TextureRenderTarget::getScale() {
+  return 1.0f;
+}
+
 float_t TextureRenderTarget::getWidth() {
   return (float_t)this->texture.getWidth();
 }

src/dawnopengl/display/TextureRenderTarget.hpp

@@ -26,6 +26,7 @@ namespace Dawn {
       
       void setSize(float_t width, float_t height);
 
+      float_t getScale() override;
       float_t getWidth() override;
       float_t getHeight() override;
       void setClearColor(struct Color color) override;