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我計算我的模型視圖矩陣,在我的主程序正常矩陣:法線倒
private void setMV()
{
modelViewMat = Matrix4.Mult(modelMat,viewMat); // model * view because opentk is row major order
GL.UniformMatrix4(uModelViewIndex, false, ref modelViewMat);
// normal matrix = transpose(inverse(modelView))
normalMat = Matrix4.Invert(modelViewMat);
normalMat = Matrix4.Transpose(normalMat);
GL.UniformMatrix4(uNormalIndex, false, ref normalMat);
}
在我的頂點着色器:
void main()
{
texcoord = VertexTexcoord;
Normal = normalize((uNormalMatrix * vec4(VertexNormal,0.0)).xyz);
Position = (uModelViewMatrix * vec4(VertexPosition,1.0)).xyz;
gl_Position = uProjectionMatrix * uModelViewMatrix * vec4(VertexPosition,1.0);
}
片段着色器:
vec3 phong(vec3 n, vec3 s, vec3 v, vec3 r)
{
vec3 diffC = texture2D(diff, texcoord.st).rgb;
vec3 specC = texture2D(spec, texcoord.st).rgb;
return uKa + uKd*max(dot(s,n),0.0)*diffC + uKs*pow(max(dot(r,v),0.0),uShininess)*specC;
}
void main() {
vec3 n = blendNormals(Normal * 0.5 + 0.5, texture2D(ddn, texcoord.st).rgb);
//vec3 n = normalize(Normal);
vec3 s = normalize(uLightPosition - Position);
vec3 v = normalize(-Position);
vec3 r = reflect(-s,n);
fragColour = vec4(phong(n,s,v,r),1.0);
}
不知道我在做什麼錯,下面是它的樣子:
謝謝,這是一個快速解決。爲了獲得完整的解決方案,我需要顛倒我的垂直陣列的順序,以便繞組與原來的相反。 – Infodayne 2015-01-27 03:41:23