1 Reply Latest reply on Apr 22, 2010 5:59 PM by Byron

    RenderMonkey - Simple HLSL diffuse lighting shader jitters

    rjfalconer

      Simple shader (see attached) compiles, but flickers and has artefects.

      I'm expecting to see a sphere with a uniform gradient from white to black.

      Effect workspace has matWorldInverseTranspose and matWorldViewProjection defined, as their predefined matricies.

      (Running on ATi Radeon 4800 series)

      Is it something I am doing wrong?

      //Vertex float4x4 matWorldViewProjection; float4x4 matWorldInverseTranspose; float3 LightDirection : Direction = float3(1,0,0.5); struct VS_IN { float4 Position : POSITION; float3 Normal : NORMAL; }; struct VS_OUT { float4 Position : POSITION; float3 Light : TEXCOORD0; float3 Normal : TEXCOORD1; }; VS_OUT vs_main(VS_IN input) { VS_OUT output = (VS_OUT)0; output.Position = mul(input.Position,matWorldViewProjection); output.Light = normalize(LightDirection); output.Normal = normalize(mul(matWorldInverseTranspose,input.Normal)); return output; } //Pixel struct VS_OUT { float4 Position : POSITION; float3 Light : TEXCOORD0; float3 Normal : TEXCOORD1; }; struct PS_OUT { float4 Color : COLOR; }; PS_OUT ps_main(VS_OUT input) { PS_OUT output = (PS_OUT)0; output.Color = saturate(dot(input.Light,input.Normal)); return output; }