Minor update - Sunlight shader

enginecustom/sunlight.ps

@@ -6,10 +6,8 @@ SamplerState SampleType : register(s0);
 cbuffer SunLightBuffer
 {
     float4 ambientColor;
+    float4 diffuseColor;
     float3 lightDirection;
-    float padding;
-    float specularPower;
-    float4 specularColor;
 };
 
 cbuffer SunLightColorBuffer
@@ -17,7 +15,6 @@ cbuffer SunLightColorBuffer
     float4 sunColor;
 };
 
-
 //////////////
 // TYPEDEFS //
 //////////////
@@ -26,10 +23,9 @@ struct PixelInputType
     float4 position : SV_POSITION;
     float2 tex : TEXCOORD0;
     float3 normal : NORMAL;
-    float3 sunPos : TEXCOORD1;
+    float3 lightDir : TEXCOORD1;
 };
 
-
 ////////////////////////////////////////////////////////////////////////////////
 // Pixel Shader
 ////////////////////////////////////////////////////////////////////////////////
@@ -38,32 +34,29 @@ float4 SunLightPixelShader(PixelInputType input) : SV_TARGET
     float4 textureColor;
     float3 lightDir;
     float4 color;
-    float3 reflection;
-    float4 specular;
     float lightIntensity;
     float4 colorArray;
     float4 colorSum;
-    int i;
 
     // Sample the pixel color from the texture using the sampler at this texture coordinate location.
     textureColor = shaderTexture.Sample(SampleType, input.tex);
 
-    // Calculate the different amounts of light on this pixel based on the positions of the lights.
-    lightIntensity = saturate(dot(input.normal, input.sunPos));
+    // Calculate the different amounts of light on this pixel based on the direction of the light.
+    lightIntensity = saturate(dot(input.normal, input.lightDir));
 
-    // Determine the diffuse color amount of each of the four lights.
-    colorArray = sunColor * lightIntensity;
+    // Determine the diffuse color amount of the light.
+    colorArray = diffuseColor * lightIntensity;
 
     // Initialize the sum of colors.
     colorSum = float4(0.0f, 0.0f, 0.0f, 1.0f);
 
-    // Add all of the light colors up.
+    // Add the light color.
     colorSum.r += colorArray.r;
     colorSum.g += colorArray.g;
     colorSum.b += colorArray.b;
 
-    // Multiply the texture pixel by the combination of all four light colors to get the final result.
+    // Multiply the texture pixel by the light color to get the final result.
     color = saturate(colorSum) * textureColor;
 
     return color;
-}
+}