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Acceleration structures suck

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Dynamitos
2025-02-25 15:31:14 +01:00
parent 65bc1c78c7
commit 961cb527af
3 changed files with 11 additions and 9 deletions
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src/metal/Compute.metal
+1 -1
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@@ -211,7 +211,7 @@ kernel void computeKernel(
if (payload.depth > 5)
{
if (payload.rnd01.z >= p)
return;
break;
else
payload.accumulatedMaterial /= p;
}
src/metal/MetalScene.cpp
+7 -8
View File
@@ -40,10 +40,10 @@ void MetalScene::createRayTracingHierarchy()
MTL::AccelerationStructureTriangleGeometryDescriptor* descriptor = MTL::AccelerationStructureTriangleGeometryDescriptor::descriptor();
descriptor->setTriangleCount(refs[i].numIndices / 3);
descriptor->setIndexBuffer(indicesBuffer);
descriptor->setIndexBufferOffset(refs[i].indicesOffset);
descriptor->setVertexBufferOffset(refs[i].positionOffset);
descriptor->setVertexBuffer(positionBuffer);
descriptor->setIndexBufferOffset(refs[i].indicesOffset * sizeof(glm::uvec3));
descriptor->setIndexType(MTL::IndexTypeUInt32);
descriptor->setVertexBuffer(positionBuffer);
descriptor->setVertexBufferOffset(refs[i].positionOffset * sizeof(glm::vec3));
MTL::PrimitiveAccelerationStructureDescriptor* primitiveDescriptor = MTL::PrimitiveAccelerationStructureDescriptor::descriptor();
primitiveDescriptor->setGeometryDescriptors(NS::Array::array(descriptor));
@@ -85,11 +85,9 @@ void MetalScene::createRayTracingHierarchy()
accelDesc->setInstanceDescriptorBuffer(instanceBuffer);
accelDesc->setInstanceCount(refs.size());
accelerationStructure = device->newAccelerationStructure(accelDesc);
accelerationStructure->setLabel(NS::String::string("InstanceAccelerationStructure", NS::ASCIIStringEncoding));
std::cout << accelerationStructure->debugDescription()->cString(NS::ASCIIStringEncoding) << std::endl;
/*MTL::AccelerationStructureSizes accelSizes = device->accelerationStructureSizes(accelDesc);
MTL::AccelerationStructureSizes accelSizes = device->accelerationStructureSizes(accelDesc);
MTL::AccelerationStructure* tempStructure = device->newAccelerationStructure(accelSizes.accelerationStructureSize);
tempStructure->setLabel(NS::String::string("Temporary AS", NS::ASCIIStringEncoding));
MTL::Buffer* scratchBuffer = device->newBuffer(accelSizes.buildScratchBufferSize, MTL::StorageModeManaged);
MTL::CommandBuffer* cmdBuffer = queue->commandBuffer();
MTL::AccelerationStructureCommandEncoder* encoder = cmdBuffer->accelerationStructureCommandEncoder();
@@ -101,10 +99,11 @@ void MetalScene::createRayTracingHierarchy()
cmdBuffer->waitUntilCompleted();
uint compactedSize = *(uint*)compactedBuffer->contents();
accelerationStructure = device->newAccelerationStructure(compactedSize);
accelerationStructure->setLabel(NS::String::string("Instance AS", NS::ASCIIStringEncoding));
cmdBuffer = queue->commandBuffer();
encoder = cmdBuffer->accelerationStructureCommandEncoder();
encoder->copyAndCompactAccelerationStructure(tempStructure, accelerationStructure);
encoder->endEncoding();
cmdBuffer->commit();
cmdBuffer->waitUntilCompleted();*/
cmdBuffer->waitUntilCompleted();
}