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/Renderer/CommandBufferBuilder.hpp

@@ -26,6 +26,7 @@ namespace Nz
 	class RenderPipeline;
 	class RenderPipelineLayout;
 	class ShaderBinding;
+	class Swapchain;
 	class Texture;
 
 	class NAZARA_RENDERER_API CommandBufferBuilder
@@ -53,6 +54,7 @@ namespace Nz
 			virtual void BindVertexBuffer(UInt32 binding, const RenderBuffer& vertexBuffer, UInt64 offset = 0) = 0;
 
 			virtual void BlitTexture(const Texture& fromTexture, const Boxui& fromBox, TextureLayout fromLayout, const Texture& toTexture, const Boxui& toBox, TextureLayout toLayout, SamplerFilter filter) = 0;
+			virtual void BlitTextureToSwapchain(const Texture& fromTexture, const Boxui& fromBox, TextureLayout fromLayout, const Swapchain& swapchain, std::size_t imageIndex) = 0;
 
 			virtual void BuildMipmaps(Texture& texture, UInt8 baseLevel, UInt8 levelCount, PipelineStageFlags srcStageMask, PipelineStageFlags dstStageMask, MemoryAccessFlags srcAccessMask, MemoryAccessFlags dstAccessMask, TextureLayout oldLayout, TextureLayout newLayout) = 0;
 

include/Nazara/Renderer/RenderFrame.hpp

@@ -19,6 +19,7 @@ namespace Nz
 {
 	class CommandBuffer;
 	class CommandBufferBuilder;
+	class RenderDevice;
 	class UploadPool;
 
 	class NAZARA_RENDERER_API RenderFrame
@@ -30,11 +31,12 @@ namespace Nz
 			RenderFrame(RenderFrame&&) = delete;
 			~RenderFrame() = default;
 
-			void Execute(const FunctionRef<void(CommandBufferBuilder& builder)>& callback, QueueTypeFlags queueTypeFlags);
+			inline void Execute(const FunctionRef<void(CommandBufferBuilder& builder)>& callback, QueueTypeFlags queueTypeFlags);
 
 			inline std::size_t GetFramebufferIndex() const;
 			const Vector2ui& GetSize() const;
-			UploadPool& GetUploadPool();
+			inline RenderDevice& GetRenderDevice();
+			inline UploadPool& GetUploadPool();
 
 			inline bool IsFramebufferInvalidated() const;
 

include/Nazara/Renderer/RenderFrame.inl

@@ -37,6 +37,11 @@ namespace Nz
 		return m_size;
 	}
 
+	inline RenderDevice& RenderFrame::GetRenderDevice()
+	{
+		return m_image->GetRenderDevice();
+	}
+
 	inline UploadPool& RenderFrame::GetUploadPool()
 	{
 		if NAZARA_UNLIKELY(!m_image)

include/Nazara/Renderer/RenderImage.hpp

@@ -15,6 +15,8 @@ namespace Nz
 	class NAZARA_RENDERER_API RenderImage : public TransientResources
 	{
 		public:
+			using TransientResources::TransientResources;
+
 			virtual void Present() = 0;
 	};
 }

include/Nazara/Renderer/RenderTarget.hpp

@@ -14,8 +14,11 @@
 
 namespace Nz
 {
+	class CommandBufferBuilder;
 	class Framebuffer;
+	class RenderFrame;
 	class RenderPass;
+	class Texture;
 
 	class NAZARA_RENDERER_API RenderTarget
 	{
@@ -23,6 +26,8 @@ namespace Nz
 			RenderTarget() = default;
 			virtual ~RenderTarget();
 
+			virtual void BlitTexture(RenderFrame& renderFrame, CommandBufferBuilder& builder, const Texture& texture) const = 0;
+
 			virtual const Framebuffer& GetFramebuffer(std::size_t i) const = 0;
 			virtual std::size_t GetFramebufferCount() const = 0;
 			virtual const RenderPass& GetRenderPass() const = 0;

include/Nazara/Renderer/Swapchain.hpp

@@ -29,6 +29,8 @@ namespace Nz
 
 			virtual RenderFrame AcquireFrame() = 0;
 
+			void BlitTexture(RenderFrame& renderFrame, CommandBufferBuilder& builder, const Texture& texture) const override;
+
 			virtual std::shared_ptr<CommandPool> CreateCommandPool(QueueType queueType) = 0;
 
 			virtual PresentMode GetPresentMode() const = 0;

include/Nazara/Renderer/TransientResources.hpp

@@ -19,6 +19,7 @@ namespace Nz
 {
 	class CommandBuffer;
 	class CommandBufferBuilder;
+	class RenderDevice;
 	class UploadPool;
 
 	class NAZARA_RENDERER_API TransientResources
@@ -33,6 +34,7 @@ namespace Nz
 
 			inline void FlushReleaseQueue();
 
+			inline RenderDevice& GetRenderDevice();
 			virtual UploadPool& GetUploadPool() = 0;
 
 			template<typename T> void PushForRelease(const T& value) = delete;
@@ -42,7 +44,7 @@ namespace Nz
 			virtual void SubmitCommandBuffer(CommandBuffer* commandBuffer, QueueTypeFlags queueTypeFlags) = 0;
 
 		protected:
-			TransientResources() = default;
+			inline TransientResources(RenderDevice& renderDvice);
 			TransientResources(const TransientResources&) = delete;
 			TransientResources(TransientResources&&) = delete;
 
@@ -53,6 +55,7 @@ namespace Nz
 
 			std::vector<Releasable*> m_releaseQueue;
 			std::vector<Block> m_releaseMemoryPool;
+			RenderDevice& m_renderDevice;
 	};
 
 	class NAZARA_RENDERER_API TransientResources::Releasable

include/Nazara/Renderer/TransientResources.inl

@@ -8,6 +8,11 @@
 
 namespace Nz
 {
+	inline TransientResources::TransientResources(RenderDevice& renderDevice) :
+	m_renderDevice(renderDevice)
+	{
+	}
+
 	inline void TransientResources::FlushReleaseQueue()
 	{
 		for (Releasable* releasable : m_releaseQueue)
@@ -21,6 +26,11 @@ namespace Nz
 			memoryblock.clear();
 	}
 
+	inline RenderDevice& TransientResources::GetRenderDevice()
+	{
+		return m_renderDevice;
+	}
+
 	template<typename T>
 	void TransientResources::PushForRelease(T&& value)
 	{
@@ -98,3 +108,4 @@ namespace Nz
 }
 
 #include <Nazara/Renderer/DebugOff.hpp>
+#include "TransientResources.hpp"

include/Nazara/Renderer/WindowSwapchain.hpp

@@ -29,6 +29,8 @@ namespace Nz
 
 			inline RenderFrame AcquireFrame();
 
+			inline void BlitTexture(RenderFrame& renderFrame, CommandBufferBuilder& builder, const Texture& texture) const override;
+
 			inline bool DoesRenderOnlyIfFocused() const;
 
 			inline void EnableRenderOnlyIfFocused(bool enable = true);

include/Nazara/Renderer/WindowSwapchain.inl

@@ -20,6 +20,11 @@ namespace Nz
 		return m_swapchain->AcquireFrame();
 	}
 
+	inline void WindowSwapchain::BlitTexture(RenderFrame& renderFrame, CommandBufferBuilder& builder, const Texture& texture) const
+	{
+		return m_swapchain->BlitTexture(renderFrame, builder, texture);
+	}
+
 	inline bool WindowSwapchain::DoesRenderOnlyIfFocused() const
 	{
 		return m_renderOnlyIfFocused;