diffuse light

enginecustom/light.ps

@@ -0,0 +1,61 @@
+////////////////////////////////////////////////////////////////////////////////
+// Filename: light.ps
+////////////////////////////////////////////////////////////////////////////////
+
+
+/////////////
+// GLOBALS //
+/////////////
+Texture2D shaderTexture : register(t0);
+SamplerState SampleType : register(s0);
+
+cbuffer LightBuffer
+{
+    float4 diffuseColor;
+    float3 lightDirection;
+	float padding;
+};
+
+
+//////////////
+// TYPEDEFS //
+//////////////
+struct PixelInputType
+{
+    float4 position : SV_POSITION;
+    float2 tex : TEXCOORD0;
+	float3 normal : NORMAL;
+};
+
+
+////////////////////////////////////////////////////////////////////////////////
+// Pixel Shader
+////////////////////////////////////////////////////////////////////////////////
+float4 LightPixelShader(PixelInputType input) : SV_TARGET
+{
+	float4 textureColor;
+	float3 lightDir;
+	float lightIntensity;
+	float4 color;
+
+
+	// Sample the pixel color from the texture using the sampler at this texture coordinate location.
+	textureColor = shaderTexture.Sample(SampleType, input.tex);
+
+	// Invert the light direction for calculations.
+    lightDir = -lightDirection;
+
+    // Calculate the amount of light on this pixel.
+    lightIntensity = saturate(dot(input.normal, lightDir));
+
+    // Change the diffuse color to red (0, 1, 0)
+    float3 greenDiffuseColor = float3(1, 0, 0);
+
+    // Determine the final amount of diffuse color based on the diffuse color combined with the light intensity.
+    color = saturate(diffuseColor * lightIntensity);
+
+    // Multiply the texture pixel and the final diffuse color to get the final pixel color result.
+	color = color * textureColor;
+
+	return color;
+}