Ajout de Jolt Physics + 1ere version des factory entitecomposants - camera, transform, rigidbody, collider, renderer

lib/All/JoltPhysics/TestFramework/Renderer/MTL/RenderInstancesMTL.mm

@@ -0,0 +1,52 @@
+// Jolt Physics Library (https://github.com/jrouwe/JoltPhysics)
+// SPDX-FileCopyrightText: 2025 Jorrit Rouwe
+// SPDX-License-Identifier: MIT
+
+#include <TestFramework.h>
+
+#include <Renderer/MTL/RenderInstancesMTL.h>
+#include <Renderer/MTL/RenderPrimitiveMTL.h>
+
+void RenderInstancesMTL::Clear()
+{
+	[mBuffer release];
+	mBuffer = nil;
+}
+
+void RenderInstancesMTL::CreateBuffer(int inNumInstances, int inInstanceSize)
+{
+	mInstanceSize = NSUInteger(inInstanceSize);
+	NSUInteger size = mInstanceSize * inNumInstances;
+	if (mBuffer == nullptr || mBufferSize < size)
+	{
+		Clear();
+
+		mBuffer = [mRenderer->GetView().device newBufferWithLength: size options: MTLResourceCPUCacheModeDefaultCache | MTLResourceStorageModeShared | MTLResourceHazardTrackingModeTracked];
+		mBufferSize = size;
+	}
+}
+
+void *RenderInstancesMTL::Lock()
+{
+	return mBuffer.contents;
+}
+
+void RenderInstancesMTL::Unlock()
+{
+}
+
+void RenderInstancesMTL::Draw(RenderPrimitive *inPrimitive, int inStartInstance, int inNumInstances) const
+{
+	if (inNumInstances <= 0)
+		return;
+
+	id<MTLRenderCommandEncoder> encoder = mRenderer->GetRenderEncoder();
+	RenderPrimitiveMTL *prim = static_cast<RenderPrimitiveMTL *>(inPrimitive);
+
+	[encoder setVertexBuffer: prim->mVertexBuffer offset: 0 atIndex: 0];
+	[encoder setVertexBuffer: mBuffer offset: mInstanceSize * inStartInstance atIndex: 1];
+	if (prim->mIndexBuffer == nil)
+		[encoder drawPrimitives: prim->mPrimitiveType vertexStart: 0 vertexCount: prim->mNumVtxToDraw instanceCount: inNumInstances];
+	else
+		[encoder drawIndexedPrimitives: prim->mPrimitiveType indexCount: prim->mNumIdxToDraw indexType: MTLIndexTypeUInt32 indexBuffer: prim->mIndexBuffer indexBufferOffset: 0 instanceCount: inNumInstances];
+}