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- Assume support during the cook, do the actual check in runtime and exit if not supported. - This slightly increases the minspec for PC projects that ship ISR to D3D 11.3 (2014-2015 level hardware). #rb Jules.Blok, Robert.Srinivasiah #review @Jules.Blok, @Robert.Srinivasiah #jira UE-162244 #preflight 632b4d6cb4515b7e2272620d [CL 22207954 by Arciel Rekman in ue5-main branch]
63 lines
2.8 KiB
C++
63 lines
2.8 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "StereoRenderUtils.h"
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#include "RenderUtils.h"
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namespace UE::StereoRenderUtils
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{
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RENDERCORE_API FStereoShaderAspects::FStereoShaderAspects(EShaderPlatform Platform) :
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bInstancedStereoEnabled(false)
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, bMobileMultiViewEnabled(false)
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, bInstancedMultiViewportEnabled(false)
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, bInstancedStereoNative(false)
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, bMobileMultiViewNative(false)
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, bMobileMultiViewFallback(false)
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{
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check(Platform < EShaderPlatform::SP_NumPlatforms);
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// Would be nice to use URendererSettings, but not accessible in RenderCore
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static FShaderPlatformCachedIniValue<bool> CVarInstancedStereo(TEXT("vr.InstancedStereo"));
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static FShaderPlatformCachedIniValue<bool> CVarMobileMultiView(TEXT("vr.MobileMultiView"));
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static FShaderPlatformCachedIniValue<bool> CVarMobileHDR(TEXT("r.MobileHDR"));
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const bool bInstancedStereo = CVarInstancedStereo.Get(Platform);
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const bool bMobilePlatform = IsMobilePlatform(Platform);
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const bool bMobilePostprocessing = CVarMobileHDR.Get(Platform);
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const bool bMobileMultiView = CVarMobileMultiView.Get(Platform);
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// If we're a cooker, don't check GRHI* setting, as it reflects runtime RHI capabilities.
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const bool bMultiViewportCapable = (GRHISupportsArrayIndexFromAnyShader || IsRunningCookCommandlet()) && RHISupportsMultiViewport(Platform);
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bInstancedStereoNative = !bMobilePlatform && bInstancedStereo && RHISupportsInstancedStereo(Platform);
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const bool bMobileMultiViewCoreSupport = bMobilePlatform && bMobileMultiView && !bMobilePostprocessing;
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if (bMobileMultiViewCoreSupport)
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{
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if (RHISupportsMobileMultiView(Platform))
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{
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bMobileMultiViewNative = true;
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}
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else if (RHISupportsInstancedStereo(Platform) && RHISupportsVertexShaderLayer(Platform))
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{
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bMobileMultiViewFallback = true;
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}
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}
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// "instanced stereo" is confusingly used to refer to two two modes:
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// 1) regular aka "native" ISR, where the views are selected via SV_ViewportArrayIndex - uses non-mobile shaders
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// 2) "mobile multiview fallback" ISR, which writes to a texture layer via SV_RenderTargetArrayIndex - uses mobile shaders
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// IsInstancedStereoEnabled() will be true in both cases
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bInstancedMultiViewportEnabled = bInstancedStereoNative && bMultiViewportCapable;
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// Since instanced stereo now relies on multi-viewport capability, it cannot be separately enabled from it.
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bInstancedStereoEnabled = bInstancedStereoNative || bMobileMultiViewFallback;
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bMobileMultiViewEnabled = bMobileMultiViewNative || bMobileMultiViewFallback;
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}
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RENDERCORE_API bool FStereoShaderAspects::IsInstancedStereoEnabled() const { return bInstancedStereoEnabled; }
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RENDERCORE_API bool FStereoShaderAspects::IsMobileMultiViewEnabled() const { return bMobileMultiViewEnabled; }
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RENDERCORE_API bool FStereoShaderAspects::IsInstancedMultiViewportEnabled() const { return bInstancedMultiViewportEnabled; }
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} // namespace UE::RenderUtils
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