59 lines
1.2 KiB
HLSL
59 lines
1.2 KiB
HLSL
//-----------------------------------------------------------------------------
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// Common.fxh
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//
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// Microsoft XNA Community Game Platform
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// Copyright (C) Microsoft Corporation. All rights reserved.
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//-----------------------------------------------------------------------------
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float ComputeFogFactor(float4 position)
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{
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return saturate(dot(position, FogVector));
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}
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void ApplyFog(inout float4 color, float fogFactor)
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{
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color.rgb = lerp(color.rgb, FogColor * color.a, fogFactor);
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}
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void AddSpecular(inout float4 color, float3 specular)
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{
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color.rgb += specular * color.a;
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}
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struct CommonVSOutput
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{
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float4 Pos_ps;
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float4 Diffuse;
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float3 Specular;
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float FogFactor;
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};
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CommonVSOutput ComputeCommonVSOutput(float4 position)
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{
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CommonVSOutput vout;
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vout.Pos_ps = mul(position, WorldViewProj);
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vout.Diffuse = DiffuseColor;
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vout.Specular = 0;
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vout.FogFactor = ComputeFogFactor(position);
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return vout;
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}
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#define SetCommonVSOutputParams \
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vout.PositionPS = cout.Pos_ps; \
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vout.Diffuse = cout.Diffuse; \
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vout.Specular = float4(cout.Specular, cout.FogFactor);
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#define SetCommonVSOutputParamsNoFog \
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vout.PositionPS = cout.Pos_ps; \
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vout.Diffuse = cout.Diffuse;
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