mirror of
https://github.com/intel/compute-runtime.git
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65 lines
2.5 KiB
C++
65 lines
2.5 KiB
C++
/*
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* Copyright (C) 2018-2025 Intel Corporation
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*
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* SPDX-License-Identifier: MIT
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*
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*/
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#pragma once
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#include "shared/source/device/device.h"
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#include "shared/source/helpers/aligned_memory.h"
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#include "shared/source/helpers/basic_math.h"
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#include "shared/source/helpers/gfx_core_helper.h"
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#include "shared/source/helpers/hw_info.h"
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#include "shared/source/helpers/non_copyable_or_moveable.h"
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#include "shared/source/release_helper/release_helper.h"
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#include "ocl_igc_shared/raytracing/ocl_raytracing_structures.h"
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#include <cstdint>
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namespace NEO {
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class RayTracingHelper : public NonCopyableAndNonMovableClass {
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public:
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static constexpr uint32_t hitInfoSize = 64;
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static constexpr uint32_t bvhStackSize = 96;
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static constexpr uint32_t memoryBackedFifoSizePerDss = 8 * MemoryConstants::kiloByte;
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static constexpr uint32_t maxBvhLevels = 8;
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static constexpr uint32_t maxNumDSSRTStacks = 2048;
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static size_t getDispatchGlobalSize() {
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return static_cast<size_t>(alignUp(sizeof(RTDispatchGlobals), MemoryConstants::cacheLineSize));
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}
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static size_t getRTStackSizePerTile(const Device &device, uint32_t tiles, uint32_t maxBvhLevel, uint32_t extraBytesLocal, uint32_t extraBytesGlobal) {
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auto &productHelper = device.getProductHelper();
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auto numRTStacksPerDss = productHelper.getNumRtStacksPerDSSForAllocation(device.getHardwareInfo());
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auto stackSizePerRay = getStackSizePerRay(maxBvhLevel, extraBytesLocal);
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auto numRtStacks = getNumRtStacks(device, numRTStacksPerDss);
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return static_cast<size_t>(alignUp(stackSizePerRay * numRtStacks + extraBytesGlobal, MemoryConstants::cacheLineSize));
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}
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static size_t getTotalMemoryBackedFifoSize(const Device &device) {
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return static_cast<size_t>(NEO::GfxCoreHelper::getHighestEnabledDualSubSlice(device.getHardwareInfo())) * memoryBackedFifoSizePerDss;
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}
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static size_t getMemoryBackedFifoSizeToPatch() {
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return static_cast<size_t>(Math::log2(memoryBackedFifoSizePerDss / MemoryConstants::kiloByte) - 1);
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}
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static uint32_t getNumRtStacks(const Device &device, uint32_t nRtStacksPerDss) {
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return NEO::GfxCoreHelper::getHighestEnabledDualSubSlice(device.getHardwareInfo()) * nRtStacksPerDss;
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}
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static uint32_t getStackSizePerRay(uint32_t maxBvhLevel, uint32_t extraBytesLocal) {
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return hitInfoSize + bvhStackSize * maxBvhLevel + extraBytesLocal;
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}
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static uint32_t getAsyncNumRTStacksPerDss() {
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return maxNumDSSRTStacks;
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}
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};
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} // namespace NEO
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