Beginning 3D Game Programming

Making Specular Highlights Per Pixel

To address this issue, you can make the highlights appear per pixel rather than per vertex. Doing so requires a more complicated pixel shader. Back in your KartRacers.fx file, add the new shader functions in Listing 23.3.

Listing 23.3. A Per-Pixel Shader

//----------------------------------------------------------------------------- // Transformation with single directional light plus per pixel specular //----------------------------------------------------------------------------- struct PER_PIXEL_OUT { float4 Position : POSITION; float2 TexCoords : TEXCOORD0; float3 LightDirection : TEXCOORD1; float3 Normal : TEXCOORD2; float3 EyeWorld : TEXCOORD3; }; PER_PIXEL_OUT TransformSpecularPerPixel(float4 pos : ...