76 lines
1.7 KiB
Plaintext
76 lines
1.7 KiB
Plaintext
#Material
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Name BlinnPhong+HalfLambert shading model only color
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Reference https://zhuanlan.zhihu.com/p/442023993
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Base Std3D/BlinnPhong
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//某些Require并不真的存在.ubo文件，写成一行一个是为了方便未来改成带路径的
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Require LocalToWorld
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Require Camera
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define HAVE_SPECULAR off //默认不定义HAVE_SPECULAR
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UBO
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{
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File Sun.ubo //文件名
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Name sun //在代码中的变量名
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Stage Vertex,Fragment //会引用的shader
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}
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#MaterialInstance
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#VertexInput
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vec3 Normal
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#Vertex
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Output
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{
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vec3 Normal;
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}
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Code
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{
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void main()
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{
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gl_Position=GetPosition3D();
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}
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}
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#Fragment
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Output
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{
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vec4 FragColor;
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}
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Code
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{
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void main()
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{
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//将法线归一化
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vec3 world_normal =normalize(Input.Normal);
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//对世界坐标下的灯光方法归一化
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vec3 world_light_direction =normalize(sun.direction);
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//点乘法线和光照
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vec3 diffuse =0.5*dot(world_light_direction,world_normal)+0.5;
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//直接光颜色
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vec3 direct_color =sun.diffuse*diffuse*sun.color;
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#ifndef HAVE_SPECULAR
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FragColor=vec4(direct_color,1.0);
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#else
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//归一代视角方向
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vec3 view_direction =normalize(camera.pos-world_position);
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//世界坐标下的反射光方向
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vec3 reflect_direction =normalize(reflect(-world_light_direction,world_normal));
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//高光
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vec3 specular =sun.specular*pow(saturate(dot(reflect_direction,view_direction)),gloss);
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FragColor=vec4(direct_color+specular,1.0);
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#endif//HAVE_SPECULAR
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}
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}
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