initial commit, 4.5 stable

thirdparty/jolt_physics/Jolt/Renderer/DebugRendererRecorder.h

@@ -0,0 +1,130 @@
+// Jolt Physics Library (https://github.com/jrouwe/JoltPhysics)
+// SPDX-FileCopyrightText: 2021 Jorrit Rouwe
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#ifndef JPH_DEBUG_RENDERER
+	#error This file should only be included when JPH_DEBUG_RENDERER is defined
+#endif // !JPH_DEBUG_RENDERER
+
+#include <Jolt/Renderer/DebugRenderer.h>
+#include <Jolt/Core/StreamOut.h>
+#include <Jolt/Core/Mutex.h>
+#include <Jolt/Core/UnorderedMap.h>
+
+JPH_NAMESPACE_BEGIN
+
+/// Implementation of DebugRenderer that records the API invocations to be played back later
+class JPH_DEBUG_RENDERER_EXPORT DebugRendererRecorder final : public DebugRenderer
+{
+public:
+	JPH_OVERRIDE_NEW_DELETE
+
+	/// Constructor
+										DebugRendererRecorder(StreamOut &inStream) : mStream(inStream) { Initialize(); }
+
+	/// Implementation of DebugRenderer interface
+	virtual void						DrawLine(RVec3Arg inFrom, RVec3Arg inTo, ColorArg inColor) override;
+	virtual void						DrawTriangle(RVec3Arg inV1, RVec3Arg inV2, RVec3Arg inV3, ColorArg inColor, ECastShadow inCastShadow) override;
+	virtual Batch						CreateTriangleBatch(const Triangle *inTriangles, int inTriangleCount) override;
+	virtual Batch						CreateTriangleBatch(const Vertex *inVertices, int inVertexCount, const uint32 *inIndices, int inIndexCount) override;
+	virtual void						DrawGeometry(RMat44Arg inModelMatrix, const AABox &inWorldSpaceBounds, float inLODScaleSq, ColorArg inModelColor, const GeometryRef &inGeometry, ECullMode inCullMode, ECastShadow inCastShadow, EDrawMode inDrawMode) override;
+	virtual void						DrawText3D(RVec3Arg inPosition, const string_view &inString, ColorArg inColor, float inHeight) override;
+
+	/// Mark the end of a frame
+	void								EndFrame();
+
+	/// Control commands written into the stream
+	enum class ECommand : uint8
+	{
+		CreateBatch,
+		CreateBatchIndexed,
+		CreateGeometry,
+		EndFrame
+	};
+
+	/// Holds a single line segment
+	struct LineBlob
+	{
+		RVec3							mFrom;
+		RVec3							mTo;
+		Color							mColor;
+	};
+
+	/// Holds a single triangle
+	struct TriangleBlob
+	{
+		RVec3							mV1;
+		RVec3							mV2;
+		RVec3							mV3;
+		Color							mColor;
+		ECastShadow						mCastShadow;
+	};
+
+	/// Holds a single text entry
+	struct TextBlob
+	{
+										TextBlob() = default;
+										TextBlob(RVec3Arg inPosition, const string_view &inString, ColorArg inColor, float inHeight) : mPosition(inPosition), mString(inString), mColor(inColor), mHeight(inHeight) { }
+
+		RVec3							mPosition;
+		String							mString;
+		Color							mColor;
+		float							mHeight;
+	};
+
+	/// Holds a single geometry draw call
+	struct GeometryBlob
+	{
+		RMat44							mModelMatrix;
+		Color							mModelColor;
+		uint32							mGeometryID;
+		ECullMode						mCullMode;
+		ECastShadow						mCastShadow;
+		EDrawMode						mDrawMode;
+	};
+
+	/// All information for a single frame
+	struct Frame
+	{
+		Array<LineBlob>					mLines;
+		Array<TriangleBlob>				mTriangles;
+		Array<TextBlob>					mTexts;
+		Array<GeometryBlob>				mGeometries;
+	};
+
+private:
+	/// Implementation specific batch object
+	class BatchImpl : public RefTargetVirtual
+	{
+	public:
+		JPH_OVERRIDE_NEW_DELETE
+
+										BatchImpl(uint32 inID)		: mID(inID) {  }
+
+		virtual void					AddRef() override			{ ++mRefCount; }
+		virtual void					Release() override			{ if (--mRefCount == 0) delete this; }
+
+		atomic<uint32>					mRefCount = 0;
+		uint32							mID;
+	};
+
+	/// Lock that prevents concurrent access to the internal structures
+	Mutex								mMutex;
+
+	/// Stream that recorded data will be sent to
+	StreamOut &							mStream;
+
+	/// Next available ID
+	uint32								mNextBatchID = 1;
+	uint32								mNextGeometryID = 1;
+
+	/// Cached geometries and their IDs
+	UnorderedMap<GeometryRef, uint32>	mGeometries;
+
+	/// Data that is being accumulated for the current frame
+	Frame								mCurrentFrame;
+};
+
+JPH_NAMESPACE_END