146 lines
3.9 KiB
HLSL
146 lines
3.9 KiB
HLSL
#include "Uniforms.hlsl"
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#include "Samplers.hlsl"
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#include "Transform.hlsl"
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#include "ScreenPos.hlsl"
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#include "Fog.hlsl"
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#if defined(COMPILEPS) && defined(SOFTPARTICLES)
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#ifndef D3D11
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// D3D9 uniform
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uniform float cSoftParticleFadeScale;
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#else
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// D3D11 constant buffer
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cbuffer CustomPS : register(b6)
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{
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float cSoftParticleFadeScale;
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}
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#endif
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#endif
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void VS(float4 iPos : POSITION,
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#ifndef NOUV
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float2 iTexCoord : TEXCOORD0,
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#endif
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#ifdef VERTEXCOLOR
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float4 iColor : COLOR0,
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#endif
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#ifdef SKINNED
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float4 iBlendWeights : BLENDWEIGHT,
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int4 iBlendIndices : BLENDINDICES,
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#endif
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#ifdef INSTANCED
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float4x3 iModelInstance : TEXCOORD4,
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#endif
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#if defined(BILLBOARD) || defined(DIRBILLBOARD)
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float2 iSize : TEXCOORD1,
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#endif
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#if defined(DIRBILLBOARD) || defined(TRAILBONE)
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float3 iNormal : NORMAL,
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#endif
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#if defined(TRAILFACECAM) || defined(TRAILBONE)
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float4 iTangent : TANGENT,
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#endif
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out float2 oTexCoord : TEXCOORD0,
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#ifdef SOFTPARTICLES
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out float4 oScreenPos : TEXCOORD1,
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#endif
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out float4 oWorldPos : TEXCOORD2,
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#ifdef VERTEXCOLOR
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out float4 oColor : COLOR0,
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#endif
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#if defined(D3D11) && defined(CLIPPLANE)
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out float oClip : SV_CLIPDISTANCE0,
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#endif
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out float4 oPos : OUTPOSITION)
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{
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// Define a 0,0 UV coord if not expected from the vertex data
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#ifdef NOUV
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float2 iTexCoord = float2(0.0, 0.0);
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#endif
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float4x3 modelMatrix = iModelMatrix;
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float3 worldPos = GetWorldPos(modelMatrix);
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oPos = GetClipPos(worldPos);
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oTexCoord = GetTexCoord(iTexCoord);
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oWorldPos = float4(worldPos, GetDepth(oPos));
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#if defined(D3D11) && defined(CLIPPLANE)
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oClip = dot(oPos, cClipPlane);
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#endif
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#ifdef SOFTPARTICLES
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oScreenPos = GetScreenPos(oPos);
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#endif
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#ifdef VERTEXCOLOR
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oColor = iColor;
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#endif
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}
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void PS(float2 iTexCoord : TEXCOORD0,
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#ifdef SOFTPARTICLES
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float4 iScreenPos: TEXCOORD1,
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#endif
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float4 iWorldPos: TEXCOORD2,
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#ifdef VERTEXCOLOR
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float4 iColor : COLOR0,
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#endif
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#if defined(D3D11) && defined(CLIPPLANE)
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float iClip : SV_CLIPDISTANCE0,
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#endif
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out float4 oColor : OUTCOLOR0)
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{
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// Get material diffuse albedo
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#ifdef DIFFMAP
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float4 diffColor = cMatDiffColor * Sample2D(DiffMap, iTexCoord);
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#ifdef ALPHAMASK
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if (diffColor.a < 0.5)
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discard;
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#endif
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#else
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float4 diffColor = cMatDiffColor;
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#endif
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#ifdef VERTEXCOLOR
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diffColor *= iColor;
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#endif
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// Get fog factor
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#ifdef HEIGHTFOG
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float fogFactor = GetHeightFogFactor(iWorldPos.w, iWorldPos.y);
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#else
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float fogFactor = GetFogFactor(iWorldPos.w);
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#endif
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// Soft particle fade
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// In expand mode depth test should be off. In that case do manual alpha discard test first to reduce fill rate
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#ifdef SOFTPARTICLES
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#if defined(EXPAND) && !defined(ADDITIVE)
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if (diffColor.a < 0.01)
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discard;
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#endif
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float particleDepth = iWorldPos.w;
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float depth = Sample2DProj(DepthBuffer, iScreenPos).r;
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#ifdef HWDEPTH
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depth = ReconstructDepth(depth);
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#endif
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#ifdef EXPAND
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float diffZ = max(particleDepth - depth, 0.0) * (cFarClipPS - cNearClipPS);
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float fade = saturate(diffZ * cSoftParticleFadeScale);
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#else
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float diffZ = (depth - particleDepth) * (cFarClipPS - cNearClipPS);
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float fade = saturate(1.0 - diffZ * cSoftParticleFadeScale);
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#endif
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#ifndef ADDITIVE
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diffColor.a = max(diffColor.a - fade, 0.0);
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#else
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diffColor.rgb = max(diffColor.rgb - fade, float3(0.0, 0.0, 0.0));
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#endif
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#endif
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oColor = float4(GetFog(diffColor.rgb, fogFactor), diffColor.a);
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}
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