556 lines
14 KiB
C++
556 lines
14 KiB
C++
// Copyright (c) 2012-2020 Wojciech Figat. All rights reserved.
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#include "RenderTools.h"
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#include "PixelFormatExtensions.h"
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#include "Engine/Core/Types/BaseTypes.h"
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#include "PixelFormat.h"
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#include "RenderView.h"
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#include "GPUDevice.h"
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#include "Engine/Content/Assets/Model.h"
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#include "Engine/Content/Assets/SkinnedModel.h"
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#include "Engine/Engine/Time.h"
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const Char* ToString(RendererType value)
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{
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const Char* result;
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switch (value)
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{
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case RendererType::Unknown:
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result = TEXT("Unknown");
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break;
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case RendererType::DirectX10:
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result = TEXT("DirectX 10");
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break;
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case RendererType::DirectX10_1:
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result = TEXT("DirectX 10.1");
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break;
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case RendererType::DirectX11:
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result = TEXT("DirectX 11");
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break;
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case RendererType::DirectX12:
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result = TEXT("DirectX 12");
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break;
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case RendererType::OpenGL4_1:
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result = TEXT("OpenGL 4.1");
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break;
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case RendererType::OpenGL4_4:
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result = TEXT("OpenGL 4.4");
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break;
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case RendererType::OpenGLES3:
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result = TEXT("OpenGL ES 3");
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break;
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case RendererType::OpenGLES3_1:
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result = TEXT("OpenGL ES 3.1");
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break;
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case RendererType::Null:
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result = TEXT("Null");
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break;
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case RendererType::Vulkan:
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result = TEXT("Vulkan");
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break;
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case RendererType::PS4:
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result = TEXT("PS4");
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break;
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default:
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result = TEXT("?");
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}
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return result;
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}
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const Char* ToString(ShaderProfile value)
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{
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const Char* result;
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switch (value)
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{
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case ShaderProfile::Unknown:
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result = TEXT("Unknown");
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break;
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case ShaderProfile::DirectX_SM4:
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result = TEXT("DirectX SM4");
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break;
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case ShaderProfile::DirectX_SM5:
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result = TEXT("DirectX SM5");
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break;
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case ShaderProfile::DirectX_SM6:
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result = TEXT("DirectX SM6");
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break;
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case ShaderProfile::GLSL_410:
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result = TEXT("GLSL 410");
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break;
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case ShaderProfile::GLSL_440:
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result = TEXT("GLSL 440");
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break;
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case ShaderProfile::Vulkan_SM5:
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result = TEXT("Vulkan SM5");
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break;
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case ShaderProfile::PS4:
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result = TEXT("PS4");
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break;
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default:
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result = TEXT("?");
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}
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return result;
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}
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const Char* ToString(FeatureLevel value)
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{
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const Char* result;
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switch (value)
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{
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case FeatureLevel::ES2:
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result = TEXT("ES2");
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break;
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case FeatureLevel::ES3:
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result = TEXT("ES3");
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break;
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case FeatureLevel::ES3_1:
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result = TEXT("ES3_1");
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break;
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case FeatureLevel::SM4:
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result = TEXT("SM4");
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break;
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case FeatureLevel::SM5:
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result = TEXT("SM5");
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break;
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case FeatureLevel::SM6:
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result = TEXT("SM6");
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break;
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default:
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result = TEXT("?");
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}
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return result;
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}
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const Char* ToString(MSAALevel value)
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{
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const Char* result;
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switch (value)
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{
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case MSAALevel::None:
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result = TEXT("None");
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break;
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case MSAALevel::X2:
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result = TEXT("X2");
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break;
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case MSAALevel::X4:
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result = TEXT("X4");
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break;
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case MSAALevel::X8:
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result = TEXT("X8");
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break;
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default:
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result = TEXT("?");
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}
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return result;
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}
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bool BlendingMode::operator==(const BlendingMode& other) const
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{
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#define EQUAL(x) x == other.x &&
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return EQUAL(BlendEnable)
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EQUAL(SrcBlend)
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EQUAL(DestBlend)
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EQUAL(BlendOp)
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EQUAL(SrcBlendAlpha)
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EQUAL(DestBlendAlpha)
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EQUAL(BlendOpAlpha)
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EQUAL(RenderTargetWriteMask)
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AlphaToCoverageEnable == other.AlphaToCoverageEnable;
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#undef EQUAL
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}
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uint32 GetHash(const BlendingMode& key)
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{
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uint32 hash = key.AlphaToCoverageEnable ? 1 : 0;
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CombineHash(hash, key.BlendEnable ? 1 : 0);
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CombineHash(hash, (uint32)key.SrcBlend);
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CombineHash(hash, (uint32)key.DestBlend);
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CombineHash(hash, (uint32)key.BlendOp);
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CombineHash(hash, (uint32)key.SrcBlendAlpha);
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CombineHash(hash, (uint32)key.DestBlendAlpha);
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CombineHash(hash, (uint32)key.BlendOpAlpha);
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CombineHash(hash, (uint32)key.RenderTargetWriteMask);
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return hash;
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}
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BlendingMode BlendingMode::Opaque =
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{
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false,
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// AlphaToCoverageEnable
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false,
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// BlendEnable
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Blend::One,
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// SrcBlend
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Blend::Zero,
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// DestBlend
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Operation::Add,
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// BlendOp
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Blend::One,
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// SrcBlendAlpha
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Blend::Zero,
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// DestBlendAlpha
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Operation::Add,
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// BlendOpAlpha
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ColorWrite::All,
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// RenderTargetWriteMask
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};
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BlendingMode BlendingMode::Additive =
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{
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false,
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// AlphaToCoverageEnable
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true,
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// BlendEnable
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Blend::SrcAlpha,
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// SrcBlend
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Blend::One,
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// DestBlend
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Operation::Add,
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// BlendOp
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Blend::SrcAlpha,
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// SrcBlendAlpha
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Blend::One,
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// DestBlendAlpha
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Operation::Add,
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// BlendOpAlpha
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ColorWrite::All,
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// RenderTargetWriteMask
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};
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BlendingMode BlendingMode::AlphaBlend =
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{
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false,
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// AlphaToCoverageEnable
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true,
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// BlendEnable
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Blend::SrcAlpha,
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// SrcBlend
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Blend::InvSrcAlpha,
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// DestBlend
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Operation::Add,
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// BlendOp
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Blend::One,
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// SrcBlendAlpha
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Blend::InvSrcAlpha,
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// DestBlendAlpha
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Operation::Add,
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// BlendOpAlpha
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ColorWrite::All,
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// RenderTargetWriteMask
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};
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BlendingMode BlendingMode::Add =
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{
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false,
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// AlphaToCoverageEnable
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true,
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// BlendEnable
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Blend::One,
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// SrcBlend
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Blend::One,
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// DestBlend
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Operation::Add,
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// BlendOp
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Blend::One,
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// SrcBlendAlpha
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Blend::One,
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// DestBlendAlpha
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Operation::Add,
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// BlendOpAlpha
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ColorWrite::All,
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// RenderTargetWriteMask
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};
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BlendingMode BlendingMode::Multiply =
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{
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false,
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// AlphaToCoverageEnable
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true,
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// BlendEnable
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Blend::Zero,
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// SrcBlend
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Blend::SrcColor,
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// DestBlend
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Operation::Add,
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// BlendOp
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Blend::Zero,
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// SrcBlendAlpha
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Blend::SrcAlpha,
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// DestBlendAlpha
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Operation::Add,
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// BlendOpAlpha
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ColorWrite::All,
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// RenderTargetWriteMask
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};
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FeatureLevel RenderTools::GetFeatureLevel(ShaderProfile profile)
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{
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switch (profile)
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{
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case ShaderProfile::DirectX_SM6:
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return FeatureLevel::SM6;
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case ShaderProfile::DirectX_SM5:
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case ShaderProfile::Vulkan_SM5:
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case ShaderProfile::PS4:
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return FeatureLevel::SM5;
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case ShaderProfile::DirectX_SM4:
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return FeatureLevel::SM4;
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case ShaderProfile::GLSL_440:
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case ShaderProfile::GLSL_410:
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case ShaderProfile::Unknown:
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return FeatureLevel::ES2;
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default:
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return FeatureLevel::ES2;
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}
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}
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bool RenderTools::CanSupportTessellation(ShaderProfile profile)
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{
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switch (profile)
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{
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case ShaderProfile::Vulkan_SM5:
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case ShaderProfile::DirectX_SM6:
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case ShaderProfile::DirectX_SM5:
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case ShaderProfile::PS4:
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return true;
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default:
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return false;
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}
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}
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void RenderTools::ComputePitch(PixelFormat format, int32 width, int32 height, uint32& rowPitch, uint32& slicePitch)
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{
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switch (format)
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{
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case PixelFormat::BC1_Typeless:
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case PixelFormat::BC1_UNorm:
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case PixelFormat::BC1_UNorm_sRGB:
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case PixelFormat::BC4_Typeless:
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case PixelFormat::BC4_UNorm:
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case PixelFormat::BC4_SNorm:
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ASSERT(PixelFormatExtensions::IsCompressed(format));
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{
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uint32 nbw = Math::Max<uint32>(1, (width + 3) / 4);
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uint32 nbh = Math::Max<uint32>(1, (height + 3) / 4);
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rowPitch = nbw * 8;
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slicePitch = rowPitch * nbh;
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}
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break;
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case PixelFormat::BC2_Typeless:
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case PixelFormat::BC2_UNorm:
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case PixelFormat::BC2_UNorm_sRGB:
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case PixelFormat::BC3_Typeless:
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case PixelFormat::BC3_UNorm:
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case PixelFormat::BC3_UNorm_sRGB:
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case PixelFormat::BC5_Typeless:
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case PixelFormat::BC5_UNorm:
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case PixelFormat::BC5_SNorm:
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case PixelFormat::BC6H_Typeless:
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case PixelFormat::BC6H_Uf16:
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case PixelFormat::BC6H_Sf16:
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case PixelFormat::BC7_Typeless:
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case PixelFormat::BC7_UNorm:
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case PixelFormat::BC7_UNorm_sRGB:
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ASSERT(PixelFormatExtensions::IsCompressed(format));
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{
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uint32 nbw = Math::Max<uint32>(1, (width + 3) / 4);
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uint32 nbh = Math::Max<uint32>(1, (height + 3) / 4);
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rowPitch = nbw * 16;
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slicePitch = rowPitch * nbh;
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}
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break;
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case PixelFormat::R8G8_B8G8_UNorm:
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case PixelFormat::G8R8_G8B8_UNorm:
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ASSERT(PixelFormatExtensions::IsPacked(format));
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rowPitch = ((width + 1) >> 1) * 4;
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slicePitch = rowPitch * height;
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break;
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default:
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ASSERT(PixelFormatExtensions::IsValid(format));
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ASSERT(!PixelFormatExtensions::IsCompressed(format) && !PixelFormatExtensions::IsPacked(format) && !PixelFormatExtensions::IsPlanar(format));
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{
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uint32 bpp = PixelFormatExtensions::SizeInBits(format);
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// Default byte alignment
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rowPitch = (width * bpp + 7) / 8;
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slicePitch = rowPitch * height;
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}
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break;
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}
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}
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void RenderTools::UpdateModelLODTransition(byte& lodTransition)
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{
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// TODO: expose this parameter to be configured per game (global config)
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const float ModelLODTransitionTime = 0.3f;
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// Update LOD transition (note: LODTransition is mapped from [0-255] to [0-ModelLODTransitionTime] using fixed point value to use 8bit only)
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const float normalizedProgress = static_cast<float>(lodTransition) * (1.0f / 255.0f);
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const float deltaProgress = Time::Draw.UnscaledDeltaTime.GetTotalSeconds() / ModelLODTransitionTime;
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const auto newProgress = static_cast<int32>((normalizedProgress + deltaProgress) * 255.0f);
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lodTransition = static_cast<byte>(Math::Min<int32>(newProgress, 255));
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}
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float RenderTools::ComputeBoundsScreenRadiusSquared(const Vector3& origin, float radius, const Vector3& viewOrigin, const Matrix& projectionMatrix)
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{
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const float screenMultiple = 0.5f * Math::Max(projectionMatrix.Values[0][0], projectionMatrix.Values[1][1]);
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const float distSqr = Vector3::DistanceSquared(origin, viewOrigin);
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return Math::Square(screenMultiple * radius) / Math::Max(1.0f, distSqr);
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}
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int32 RenderTools::ComputeModelLOD(const Model* model, const Vector3& origin, float radius, const RenderContext& renderContext)
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{
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const auto lodView = (renderContext.LodProxyView ? renderContext.LodProxyView : &renderContext.View);
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const float screenRadiusSquared = ComputeBoundsScreenRadiusSquared(origin, radius, *lodView) * renderContext.View.ModelLODDistanceFactorSqrt;
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// Check if model is being culled
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if (Math::Square(model->MinScreenSize * 0.5f) > screenRadiusSquared)
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return -1;
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// Skip if no need to calculate LOD
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if (model->LODs.Count() <= 1)
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return 0;
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// Iterate backwards and return the first matching LOD
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for (int32 lodIndex = model->LODs.Count() - 1; lodIndex >= 0; lodIndex--)
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{
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if (Math::Square(model->LODs[lodIndex].ScreenSize * 0.5f) >= screenRadiusSquared)
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{
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return lodIndex;
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}
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}
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return 0;
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}
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int32 RenderTools::ComputeSkinnedModelLOD(const SkinnedModel* model, const Vector3& origin, float radius, const RenderContext& renderContext)
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{
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const auto lodView = (renderContext.LodProxyView ? renderContext.LodProxyView : &renderContext.View);
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const float screenRadiusSquared = ComputeBoundsScreenRadiusSquared(origin, radius, *lodView) * renderContext.View.ModelLODDistanceFactorSqrt;
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// Check if model is being culled
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if (Math::Square(model->MinScreenSize * 0.5f) > screenRadiusSquared)
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return -1;
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// Skip if no need to calculate LOD
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if (model->LODs.Count() <= 1)
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return 0;
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// Iterate backwards and return the first matching LOD
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for (int32 lodIndex = model->LODs.Count() - 1; lodIndex >= 0; lodIndex--)
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{
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if (Math::Square(model->LODs[lodIndex].ScreenSize * 0.5f) >= screenRadiusSquared)
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{
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return lodIndex;
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}
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}
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return 0;
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}
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uint64 CalculateTextureMemoryUsage(PixelFormat format, int32 width, int32 height, int32 mipLevels)
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{
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uint64 result = 0;
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if (mipLevels == 0)
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mipLevels = 69;
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uint32 rowPitch, slicePitch;
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while (mipLevels > 0 && (width >= 1 || height >= 1))
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{
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RenderTools::ComputePitch(format, width, height, rowPitch, slicePitch);
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result += slicePitch;
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if (width > 1)
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width >>= 1;
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if (height > 1)
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height >>= 1;
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mipLevels--;
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}
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return result;
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}
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uint64 CalculateTextureMemoryUsage(PixelFormat format, int32 width, int32 height, int32 depth, int32 mipLevels)
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{
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return CalculateTextureMemoryUsage(format, width, height, mipLevels) * depth;
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}
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int32 MipLevelsCount(int32 width, bool useMipLevels)
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{
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if (!useMipLevels)
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return 1;
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int32 result = 1;
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while (width > 1)
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{
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if (width > 1)
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width >>= 1;
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result++;
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}
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return result;
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}
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int32 MipLevelsCount(int32 width, int32 height, bool useMipLevels)
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{
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// Check if use mip maps
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if (!useMipLevels)
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{
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// No mipmaps chain, only single mip map
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return 1;
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}
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// Count mip maps
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int32 result = 1;
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while (width > 1 || height > 1)
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{
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if (width > 1)
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width >>= 1;
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if (height > 1)
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height >>= 1;
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result++;
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}
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return result;
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}
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int32 MipLevelsCount(int32 width, int32 height, int32 depth, bool useMipLevels)
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{
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if (!useMipLevels)
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return 1;
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int32 result = 1;
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while (width > 1 || height > 1 || depth > 1)
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{
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if (width > 1)
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width >>= 1;
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if (height > 1)
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height >>= 1;
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if (depth > 1)
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depth >>= 1;
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result++;
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}
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return result;
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}
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float ViewToCenterLessRadius(const RenderView& view, const Vector3& center, float radius)
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{
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// Calculate distance from view to sphere center
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float viewToCenter = Vector3::Distance(view.Position, center);
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// Check if need to fix the radius
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//if (radius + viewToCenter > view.Far)
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{
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// Clamp radius
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//radius = view.Far - viewToCenter;
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}
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// Calculate result
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return viewToCenter - radius;
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}
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