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Location: alysbrooks-public/games/isometric-park-fna/FNA/src/Graphics/Effect/StockEffects/HLSL/Common.fxh - annotation

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Commit Description:
Tweak calculations....
Commit Description:
Tweak calculations. Prevent a negative number of visitors and separate visitors from donors.
References:
r704:a2765e9341f6 m7-leisure
File last commit:
r0:e33f209de7e5 default
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FNA/src/Graphics/Effect/StockEffects/HLSL/Common.fxh
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alys
Early working version (including all dependencies, lol).
 r0 //-----------------------------------------------------------------------------
// Common.fxh
//
// Microsoft XNA Community Game Platform
// Copyright (C) Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------------------------
float ComputeFogFactor(float4 position)
{
return saturate(dot(position, FogVector));
}
void ApplyFog(inout float4 color, float fogFactor)
{
color.rgb = lerp(color.rgb, FogColor * color.a, fogFactor);
}
void AddSpecular(inout float4 color, float3 specular)
{
color.rgb += specular * color.a;
}
struct CommonVSOutput
{
float4 Pos_ps;
float4 Diffuse;
float3 Specular;
float FogFactor;
};
CommonVSOutput ComputeCommonVSOutput(float4 position)
{
CommonVSOutput vout;
vout.Pos_ps = mul(position, WorldViewProj);
vout.Diffuse = DiffuseColor;
vout.Specular = 0;
vout.FogFactor = ComputeFogFactor(position);
return vout;
}
#define SetCommonVSOutputParams \
vout.PositionPS = cout.Pos_ps; \
vout.Diffuse = cout.Diffuse; \
vout.Specular = float4(cout.Specular, cout.FogFactor);
#define SetCommonVSOutputParamsNoFog \
vout.PositionPS = cout.Pos_ps; \
vout.Diffuse = cout.Diffuse;