Renderer: Implement renderpass attachments clear for OpenGL

src/Nazara/Renderer/RenderWindowImpl.cpp

@@ -0,0 +1,74 @@
+// Copyright (C) 2020 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Renderer module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Renderer/RenderWindowImpl.hpp>
+#include <Nazara/Renderer/Debug.hpp>
+
+namespace Nz
+{
+	RenderWindowImpl::~RenderWindowImpl() = default;
+
+	void RenderWindowImpl::BuildRenderPass(PixelFormat colorFormat, PixelFormat depthFormat, std::vector<RenderPass::Attachment>& attachments, std::vector<RenderPass::SubpassDescription>& subpassDescriptions, std::vector<RenderPass::SubpassDependency>& subpassDependencies)
+	{
+		assert(colorFormat != PixelFormat::Undefined);
+
+		attachments.push_back({
+			colorFormat,
+			AttachmentLoadOp::Clear,
+			AttachmentLoadOp::Discard,
+			AttachmentStoreOp::Store,
+			AttachmentStoreOp::Discard,
+			TextureLayout::Undefined,
+			TextureLayout::Present
+		});
+
+		RenderPass::AttachmentReference colorReference = {
+			0,
+			TextureLayout::ColorOutput
+		};
+
+		subpassDescriptions.push_back(
+		{
+			{ colorReference },
+			{},
+			{},
+			std::nullopt
+		});
+
+		subpassDependencies.push_back({
+			RenderPass::ExternalSubpassIndex,
+			PipelineStage::ColorOutput,
+			{},
+
+			0,
+			PipelineStage::ColorOutput,
+			MemoryAccess::ColorWrite,
+
+			true //< tilable
+		});
+
+		if (depthFormat != PixelFormat::Undefined)
+		{
+			attachments.push_back({
+				depthFormat,
+				AttachmentLoadOp::Clear,
+				AttachmentLoadOp::Discard,
+				AttachmentStoreOp::Discard,
+				AttachmentStoreOp::Discard,
+				TextureLayout::Undefined,
+				TextureLayout::DepthStencilReadWrite
+			});
+
+			subpassDescriptions.front().depthStencilAttachment = RenderPass::AttachmentReference{
+				1,
+				TextureLayout::DepthStencilReadWrite
+			};
+
+			auto& subpassDependency = subpassDependencies.front();
+			subpassDependency.fromStages |= PipelineStage::FragmentTestsEarly;
+			subpassDependency.toStages |= PipelineStage::FragmentTestsEarly;
+			subpassDependency.toAccessFlags |= MemoryAccess::DepthStencilWrite;
+		}
+	}
+}

src/Nazara/Renderer/RendererWindowImpl.cpp

@@ -1,11 +0,0 @@
-// Copyright (C) 2020 Jérôme Leclercq
-// This file is part of the "Nazara Engine - Renderer module"
-// For conditions of distribution and use, see copyright notice in Config.hpp
-
-#include <Nazara/Renderer/RenderWindowImpl.hpp>
-#include <Nazara/Renderer/Debug.hpp>
-
-namespace Nz
-{
-	RenderWindowImpl::~RenderWindowImpl() = default;
-}