C++博客-AstaTus-随笔分类-HLSL

float4x4 Scal;

float4x4 World;

float4x4 View;

float4x4 projection;

float4x4 WorldViewProjection;

float3 EyePosition;

float3 LightDir;

float4 LightColor;

struct VertexInput

{

float4 Position : POSITION;

float2 Tex : TEXCOORD0;

float3 Normal : NORMAL;

};

struct VertexOutput

{

float4 Position : POSITION;

float2 Tex : TEXCOORD0;

float3 Normal : TEXCOORD1;

float3 View : TEXCOORD2;

};

VertexOutput VertexMain(VertexInput input)

{

VertexOutput output = (VertexOutput)0;

WorldViewProjection = mul(mul(View, World), projection);

output.Position = mul(mul(input.Position, Scal), WorldViewProjection);

output.Tex = input.Tex;

output.Normal = mul(input.Normal, World);

output.View = EyePosition - mul(input.Position, World);

return output;

}

float4 PixelMain(VertexOutput input) : COLOR0

{

float diffsum;

float specularsum;

float4 color;

float sunshinepower;

float4 amibent = float4(0.1f, 0.1f, 0.1f, 1.0f);

sunshinepower = 16.0f;

diffsum = specularsum = 0;

//漫反射

LightDir = normalize(LightDir);

diffsum = saturate(dot(LightDir, input.Normal));

//镜面反射

float3 L = -LightDir;

float3 R = normalize(reflect(L, input.Normal));

float3 V = normalize(input.View);

specularsum = pow(saturate(dot(R, V)), sunshinepower);

color = specularsum + diffsum * LightColor + amibent;

return color;

}

technique techR

{

pass p0

{

VertexShader = compile vs_2_0 VertexMain();

PixelShader = compile ps_2_0 PixelMain();

}