Graphics/Camera: Add clear color per viewer

include/Nazara/Graphics/AbstractViewer.hpp

@@ -8,6 +8,7 @@
 #define NAZARA_GRAPHICS_ABSTRACTVIEWER_HPP
 
 #include <Nazara/Prerequisites.hpp>
+#include <Nazara/Core/Color.hpp>
 #include <Nazara/Graphics/Config.hpp>
 #include <Nazara/Math/Rect.hpp>
 
@@ -22,6 +23,7 @@ namespace Nz
 			AbstractViewer() = default;
 			~AbstractViewer() = default;
 
+			virtual const Color& GetClearColor() const = 0;
 			virtual UInt32 GetRenderMask() const = 0;
 			virtual const RenderTarget& GetRenderTarget() = 0;
 			virtual ViewerInstance& GetViewerInstance() = 0;

include/Nazara/Graphics/BakedFrameGraph.hpp

@@ -11,6 +11,7 @@
 #include <Nazara/Graphics/Config.hpp>
 #include <Nazara/Graphics/FramePass.hpp>
 #include <Nazara/Math/Rect.hpp>
+#include <Nazara/Renderer/CommandBufferBuilder.hpp>
 #include <Nazara/Renderer/CommandPool.hpp>
 #include <Nazara/Renderer/Framebuffer.hpp>
 #include <Nazara/Renderer/RenderPass.hpp>
@@ -72,6 +73,7 @@ namespace Nz
 				std::shared_ptr<RenderPass> renderPass;
 				std::string name;
 				std::vector<std::size_t> outputTextureIndices;
+				std::vector<CommandBufferBuilder::ClearValues> outputClearValues;
 				std::vector<SubpassData> subpasses;
 				std::vector<TextureTransition> transitions;
 				FramePass::ExecutionCallback executionCallback;

include/Nazara/Graphics/Camera.hpp

@@ -28,6 +28,7 @@ namespace Nz
 			~Camera() = default;
 
 			inline float GetAspectRatio() const;
+			const Color& GetClearColor() const override;
 			inline DegreeAnglef GetFOV() const;
 			UInt32 GetRenderMask() const override;
 			const RenderTarget& GetRenderTarget() override;
@@ -39,6 +40,7 @@ namespace Nz
 			inline float GetZFar() const;
 			inline float GetZNear() const;
 
+			inline void UpdateClearColor(Color color);
 			inline void UpdateFOV(DegreeAnglef fov);
 			inline void UpdateProjectionType(ProjectionType projectionType);
 			inline void UpdateRenderMask(UInt32 renderMask);
@@ -61,6 +63,7 @@ namespace Nz
 			NazaraSlot(RenderTarget, OnRenderTargetSizeChange, m_onRenderTargetSizeChange);
 
 			const RenderTarget* m_renderTarget;
+			Color m_clearColor;
 			DegreeAnglef m_fov;
 			ProjectionType m_projectionType;
 			Rectf m_targetRegion;

include/Nazara/Graphics/Camera.inl

@@ -10,6 +10,7 @@ namespace Nz
 {
 	inline Camera::Camera(const RenderTarget* renderTarget, ProjectionType projectionType) :
 	m_renderTarget(nullptr),
+	m_clearColor(Color::Black),
 	m_fov(70.f),
 	m_projectionType(projectionType),
 	m_targetRegion(0.f, 0.f, 1.f, 1.f),
@@ -24,6 +25,7 @@ namespace Nz
 
 	inline Camera::Camera(const Camera& camera) :
 	m_renderTarget(nullptr),
+	m_clearColor(camera.m_clearColor),
 	m_fov(camera.m_fov),
 	m_projectionType(camera.m_projectionType),
 	m_targetRegion(camera.m_targetRegion),
@@ -39,6 +41,7 @@ namespace Nz
 
 	inline Camera::Camera(Camera&& camera) noexcept :
 	m_renderTarget(nullptr),
+	m_clearColor(camera.m_clearColor),
 	m_fov(camera.m_fov),
 	m_projectionType(camera.m_projectionType),
 	m_targetRegion(camera.m_targetRegion),
@@ -82,6 +85,11 @@ namespace Nz
 		return m_zNear;
 	}
 
+	inline void Camera::UpdateClearColor(Color color)
+	{
+		m_clearColor = color;
+	}
+
 	inline void Camera::UpdateFOV(DegreeAnglef fov)
 	{
 		m_fov = fov;

src/Nazara/Graphics/BakedFrameGraph.cpp

@@ -62,7 +62,7 @@ namespace Nz
 					builder.TextureBarrier(textureTransition.srcStageMask, textureTransition.dstStageMask, textureTransition.srcAccessMask, textureTransition.dstAccessMask, textureTransition.oldLayout, textureTransition.newLayout, *texture);
 				}
 
-				builder.BeginRenderPass(*passData.framebuffer, *passData.renderPass, passData.renderRect);
+				builder.BeginRenderPass(*passData.framebuffer, *passData.renderPass, passData.renderRect, passData.outputClearValues.data(), passData.outputClearValues.size());
 
 				if (!passData.name.empty())
 					builder.BeginDebugRegion(passData.name, Color::Green);

src/Nazara/Graphics/Camera.cpp

@@ -8,6 +8,11 @@
 
 namespace Nz
 {
+	const Color& Camera::GetClearColor() const
+	{
+		return m_clearColor;
+	}
+
 	UInt32 Camera::GetRenderMask() const
 	{
 		return m_renderMask;

src/Nazara/Graphics/ForwardFramePipeline.cpp

@@ -475,7 +475,7 @@ namespace Nz
 			forwardPass.SetDepthStencilInput(viewerData.depthStencilAttachment);
 			//forwardPass.SetDepthStencilOutput(viewerData.depthStencilAttachment);
 
-			forwardPass.SetClearColor(0, Color::Black);
+			forwardPass.SetClearColor(0, viewer->GetClearColor());
 			forwardPass.SetDepthStencilClear(1.f, 0);
 
 			forwardPass.SetExecutionCallback([&]()