BS版本 1.3

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2023-05-26 2f70f6727314edd84d8ec2bfe3ce832803f1ea77

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 precision highp float;
uniform mat4 u_modelViewMatrix;
uniform mat4 u_projectionMatrix;
uniform mat3 u_normalMatrix;
attribute vec3 a_position;
varying vec3 v_positionEC;
attribute vec3 a_normal;
varying vec3 v_normal;
void main(void) {
  vec4 pos = u_modelViewMatrix * vec4(a_position,1.0);
  v_positionEC = pos.xyz;
  gl_Position = u_projectionMatrix * pos;
  v_normal = u_normalMatrix * a_normal;
}
precision highp float;
uniform vec4 u_ambient;
uniform vec4 u_diffuse;
uniform vec4 u_emission;
uniform vec4 u_specular;
uniform float u_shininess;
uniform float u_transparency;
varying vec3 v_positionEC;
varying vec3 v_normal;
void main(void) {
  vec3 normal = normalize(v_normal);
  vec4 diffuse = u_diffuse;
  vec3 diffuseLight = vec3(0.0, 0.0, 0.0);
  vec3 specular = u_specular.rgb;
  vec3 specularLight = vec3(0.0, 0.0, 0.0);
  vec3 emission = u_emission.rgb;
  vec3 ambient = u_ambient.rgb;
  vec3 viewDir = -normalize(v_positionEC);
  vec3 ambientLight = vec3(0.0, 0.0, 0.0);
  ambientLight += vec3(0.2, 0.2, 0.2);
  vec3 l = vec3(0.0, 0.0, 1.0);
  diffuseLight += vec3(1.0, 1.0, 1.0) * max(dot(normal,l), 0.);
  vec3 h = normalize(l + viewDir);
  float specularIntensity = max(0., pow(max(dot(normal, h), 0.), u_shininess));
  specularLight += vec3(1.0, 1.0, 1.0) * specularIntensity;
  vec3 color = vec3(0.0, 0.0, 0.0);
  color += diffuse.rgb * diffuseLight;
  color += specular * specularLight;
  color += emission;
  color += ambient * ambientLight;
  gl_FragColor = vec4(color * diffuse.a, diffuse.a * u_transparency);
}