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67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreTypes.h"
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#if UE_ENABLE_INCLUDE_ORDER_DEPRECATED_IN_5_2
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#include "RHIDefinitions.h"
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#endif
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enum EShaderPlatform : uint16;
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namespace UE::StereoRenderUtils
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{
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/*
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* Detect the single-draw stereo shader variant, in order to support usage across different platforms
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*/
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class FStereoShaderAspects
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{
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public:
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/**
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* Determines the stereo aspects of the shader pipeline based on the input shader platform
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* @param Platform Target shader platform used to determine stereo shader variant
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*/
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RENDERCORE_API FStereoShaderAspects(EShaderPlatform Platform);
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/**
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* Default empty constructor for object in FSceneView. Do not use!
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*/
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RENDERCORE_API FStereoShaderAspects();
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/**
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* Whether instanced stereo rendering is enabled - i.e. using a single instanced drawcall to render to both stereo views.
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* The output is redirected via the viewport index.
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*/
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inline bool IsInstancedStereoEnabled() const { return bInstancedStereoEnabled; }
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/**
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* Whether mobile multiview is enabled - i.e. using VK_KHR_multiview. Another drawcall reduction technique, independent of instanced stereo.
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* Mobile multiview generates view indices to index into texture arrays.
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* Can be internally emulated using instanced stereo if native support is unavailable, by using ISR-generated view indices to index into texture arrays.
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*/
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inline bool IsMobileMultiViewEnabled() const { return bMobileMultiViewEnabled; };
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/**
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* Whether multiviewport rendering is enabled - i.e. using ViewportIndex to index into viewport.
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* Relies on instanced stereo rendering being enabled.
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*/
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inline bool IsInstancedMultiViewportEnabled() const { return bInstancedMultiViewportEnabled; };
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private:
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bool bInstancedStereoEnabled : 1;
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bool bMobileMultiViewEnabled : 1;
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bool bInstancedMultiViewportEnabled : 1;
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bool bInstancedStereoNative : 1;
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bool bMobileMultiViewNative : 1;
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bool bMobileMultiViewFallback : 1;
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};
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RENDERCORE_API void LogISRInit(const UE::StereoRenderUtils::FStereoShaderAspects& Aspects);
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RENDERCORE_API void VerifyISRConfig(const UE::StereoRenderUtils::FStereoShaderAspects& Aspects, EShaderPlatform ShaderPlatform);
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} // namespace UE::StereoRenderUtils
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