Kav/Effects/HLSL/LinearDepthEffect.fx

48 lines
1.1 KiB
HLSL

#include "Macros.fxh"
BEGIN_CONSTANTS
float4x4 Model _vs(c0) _cb(c0);
float4x4 ModelViewProjection _vs(c4) _cb(c4);
float3 LightPosition _ps(c0) _cb(c8);
float FarPlane _ps(c1) _cb(c9);
END_CONSTANTS
struct VertexShaderInput
{
float4 Position : POSITION;
};
struct VertexShaderOutput
{
float4 Position : SV_Position;
float3 PositionWorld : TEXCOORD0;
};
VertexShaderOutput main_vs(VertexShaderInput input)
{
VertexShaderOutput output;
output.Position = mul(input.Position, ModelViewProjection);
output.Position.x *= -1; // otherwise cube map render will be horizontally flipped
output.PositionWorld = mul(input.Position, Model);
return output;
}
float4 main_ps(VertexShaderOutput input) : SV_TARGET0
{
float lightDistance = length(input.PositionWorld - LightPosition);
lightDistance /= FarPlane;
return float4(lightDistance, 0.0, 0.0, 0.0);
}
Technique SimpleDepth
{
Pass
{
VertexShader = compile vs_3_0 main_vs();
PixelShader = compile ps_3_0 main_ps();
}
}