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