mirror of
https://github.com/scratchfoundation/bgfx.git
synced 2024-12-04 21:31:11 -05:00
56 lines
1.6 KiB
Text
56 lines
1.6 KiB
Text
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mat3 xll_constructMat3( mat4 m) {
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return mat3( vec3( m[0]), vec3( m[1]), vec3( m[2]));
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}
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struct v2f {
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vec4 pos;
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vec4 color;
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};
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struct appdata {
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vec4 vertex;
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vec3 normal;
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};
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uniform mat4 UNITY_MATRIX_IT_MV;
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uniform mat4 UNITY_MATRIX_MV;
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uniform mat4 UNITY_MATRIX_MVP;
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uniform vec4 unity_LightAtten[4];
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uniform vec4 unity_LightColor[4];
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uniform vec4 unity_LightPosition[4];
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vec3 ShadeMyVertexLights( in vec4 vertex, in vec3 normal );
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v2f xlat_main( in appdata v );
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vec3 ShadeMyVertexLights( in vec4 vertex, in vec3 normal ) {
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vec3 viewpos;
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vec3 viewN;
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vec3 lightColor = vec3( 0.00000, 0.00000, 0.00000);
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int i = 0;
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vec3 toLight;
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float lengthSq;
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float atten;
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float diff;
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viewpos = ( UNITY_MATRIX_MV * vertex ).xyz ;
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viewN = ( xll_constructMat3( UNITY_MATRIX_IT_MV) * normal );
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for ( ; (i < 2); ( i++ )) {
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toLight = (unity_LightPosition[ i ].xyz - viewpos.xyz );
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lengthSq = dot( toLight, toLight);
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atten = (1.00000 / (1.00000 + (lengthSq * unity_LightAtten[ i ].z )));
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diff = max( 0.00000, dot( viewN, normalize( toLight )));
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lightColor += (unity_LightColor[ i ].xyz * (diff * atten));
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}
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return (lightColor * 2.00000);
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}
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v2f xlat_main( in appdata v ) {
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v2f o;
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o.pos = ( UNITY_MATRIX_MVP * v.vertex );
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o.color = vec4( ShadeMyVertexLights( v.vertex, v.normal), 1.00000);
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return o;
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}
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varying vec4 xlv_TEXCOORD0;
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void main() {
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v2f xl_retval;
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appdata xlt_v;
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xlt_v.vertex = vec4( gl_Vertex);
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xlt_v.normal = vec3( gl_Normal);
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xl_retval = xlat_main( xlt_v);
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gl_Position = vec4( xl_retval.pos);
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xlv_TEXCOORD0 = vec4( xl_retval.color);
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}
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