셰이더 프로그래밍 기본공부 4

허무하리만큼 간단한 엠비언트 추가 ;;;

float4x4 WorldViewProj : WORLDVIEWPROJ ;
float4x4 World : WORLD ;

texture basemap : DIFFUSEMAP
<
string UIName = “base”;
int Texcoord = 0;
int MapChannel =1;

;

sampler2D basesampler = sampler_state
{
texture = ;
MinFilter = Linear;
MagFilter = Linear;
MipFilter = Linear;
};

float3 lightdirection : DIRECTION
<
string UIName = “라이트 디렉션”;
string Object = “Directionallight”;
string Space = “World”;
int refID = 0;

;

float3 lightambient
<
string UIName = “Ambient Color”;

;

float3 lightcolor : LIGHTCOLOR
<
int lightRef =0;
string UIWidget = “none”;

;

void VS
(
in float4 ipos : POSITION,
in float3 inormal : NORMAL,
in float2 itex : TEXCOORD0,
out float4 opos : POSITION,
out float2 otex : TEXCOORD0,
out float3 olight : TEXCOORD1
)
{
float3 -normal = normalize(mul(inormal,(float3x3)World));
opos = mul(ipos,WorldViewProj);
otex = itex;
olight = lightambient + lightcolor * max(0,dot(onormal,lightdirection));
}

void PS
(
in float2 otex : TEXCOORD0,
in float4 olight : TEXCOORD1,
out float4 ocolor : COLOR
)
{
ocolor = tex2D(basesampler, otex)* olight;
}

technique jp1
{
pass p0
{
vertexshader = compile vs_2_0 VS();
pixelshader = compile ps_2_0 PS();
}
}

/////////////////// 중간에 라이트 계산에서 float4 자리수 맞추는 부분에 오류가 있어서 동작이 제대로 안되었었을겁니다.
////////////////// 아래는 수정한것.