123 lines
3.2 KiB
C
123 lines
3.2 KiB
C
// Copyright (c) 2012-2021 Wojciech Figat. All rights reserved.
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#pragma once
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#include "Engine/Core/Math/Matrix.h"
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#include "Engine/Core/Math/Vector2.h"
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#include "Engine/Core/Math/Vector3.h"
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#include "Engine/Core/Math/Vector4.h"
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/// <summary>
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/// Structure that contains information about GBuffer for shaders.
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/// </summary>
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struct GBufferData
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{
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Vector4 ViewInfo;
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Vector4 ScreenSize;
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Vector3 ViewPos;
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float ViewFar;
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Matrix InvViewMatrix;
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Matrix InvProjectionMatrix;
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};
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/// <summary>
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/// Structure that contains information about exponential height fog for shaders.
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/// </summary>
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struct ExponentialHeightFogData
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{
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Vector3 FogInscatteringColor;
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float FogMinOpacity;
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float FogDensity;
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float FogHeight;
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float FogHeightFalloff;
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float FogAtViewPosition;
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Vector3 InscatteringLightDirection;
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float ApplyDirectionalInscattering;
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Vector3 DirectionalInscatteringColor;
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float DirectionalInscatteringExponent;
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float FogCutoffDistance;
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float VolumetricFogMaxDistance;
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float DirectionalInscatteringStartDistance;
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float StartDistance;
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};
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/// <summary>
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/// Structure that contains information about atmosphere fog for shaders.
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/// </summary>
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struct AtmosphericFogData
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{
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float AtmosphericFogDensityScale;
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float AtmosphericFogSunDiscScale;
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float AtmosphericFogDistanceScale;
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float AtmosphericFogGroundOffset;
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float AtmosphericFogAltitudeScale;
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float AtmosphericFogStartDistance;
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float AtmosphericFogPower;
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float AtmosphericFogDistanceOffset;
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Vector3 AtmosphericFogSunDirection;
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float AtmosphericFogSunPower;
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Vector3 AtmosphericFogSunColor;
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float AtmosphericFogDensityOffset;
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};
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/// <summary>
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/// Structure that contains information about light for shaders.
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/// </summary>
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PACK_STRUCT(struct LightData {
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Vector2 SpotAngles;
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float SourceRadius;
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float SourceLength;
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Vector3 Color;
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float MinRoughness;
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Vector3 Position;
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float CastShadows;
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Vector3 Direction;
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float Radius;
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float FalloffExponent;
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float InverseSquared;
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float Dummy0;
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float RadiusInv;
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});
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/// <summary>
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/// Structure that contains information about light for shaders.
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/// </summary>
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PACK_STRUCT(struct LightShadowData {
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Vector2 ShadowMapSize;
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float Sharpness;
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float Fade;
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float NormalOffsetScale;
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float Bias;
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float FadeDistance;
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uint32 NumCascades;
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Vector4 CascadeSplits;
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Matrix ShadowVP[6];
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});
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/// <summary>
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/// Packed env probe data
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/// </summary>
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PACK_STRUCT(struct ProbeData {
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Vector4 Data0; // x - Position.x, y - Position.y, z - Position.z, w - unused
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Vector4 Data1; // x - Radius , y - 1 / Radius, z - Brightness, w - unused
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});
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// Minimum roughness value used for shading (prevent 0 roughness which causes NaNs in Vis_SmithJointApprox)
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#define MIN_ROUGHNESS 0.04f
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// Maximum amount of directional light cascades (using CSM technique)
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#define MAX_CSM_CASCADES 4
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// Default format for the shadow map textures
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#define SHADOW_MAPS_FORMAT PixelFormat::D16_UNorm
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// Material distortion offsets output pass (material uses PS_Distortion, ForwardPass resolves the offsets)
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#define Distortion_Pass_Output_Format PixelFormat::R8G8B8A8_UNorm
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