phong.vrt

来自「G3D游戏引擎的库」· VRT 代码 · 共 20 行

/**
 Per-pixel Phong Shading
 */

/** Camera origin in world space */
uniform vec3 wsEyePosition;

/** Non-unit vector to the eye from the vertex */
varying vec3 wsInterpolatedEye;

/** Non-unit surface normal in world space */
varying vec3 wsInterpolatedNormal;

void main(void) {
    wsInterpolatedNormal = g3d_ObjectToWorldNormalMatrix * gl_Normal;
    wsInterpolatedEye    = wsEyePosition - (g3d_ObjectToWorldMatrix * gl_Vertex).xyz;

    gl_Position = ftransform();
}