Renderer: Blit texture to window instead of using a full renderpass

This may improve performance and allow for render targets to customize how they blit the final texture (allowing for render-to-texture)

include/Nazara/Graphics/ForwardFramePipeline.hpp

@@ -121,7 +121,6 @@ namespace Nz
 			{
 				std::size_t finalAttachment;
 				std::vector<const ViewerData*> viewers;
-				ShaderBindingPtr blitShaderBinding;
 			};
 
 			struct SkeletonInstanceData

include/Nazara/Graphics/FramePassAttachment.hpp

@@ -9,6 +9,7 @@
 
 #include <NazaraUtils/Prerequisites.hpp>
 #include <Nazara/Graphics/Config.hpp>
+#include <Nazara/Renderer/Enums.hpp>
 #include <Nazara/Utility/PixelFormat.hpp>
 #include <string>
 
@@ -24,6 +25,7 @@ namespace Nz
 	{
 		std::string name;
 		PixelFormat format;
+		TextureUsage additionalUsage = TextureUsage::TransferSource;
 		FramePassAttachmentSize size = FramePassAttachmentSize::SwapchainFactor;
 		unsigned int width = 100'000;
 		unsigned int height = 100'000;