补充某些必要的文件

engine/cocos2d/renderer/build/chunks/shading-phong.inc

@@ -0,0 +1,59 @@
+
+#include <cc-lights>
+
+struct PhongSurface {
+  vec3 diffuse;
+  vec3 emissive;
+  vec3 specular;
+  float opacity;
+
+  float glossiness;
+
+  vec3 position;
+  vec3 normal;
+  vec3 viewDirection;
+};
+
+Lighting brdf (PhongSurface s, LightInfo info) {
+  Lighting result;
+  float ndh = 0.0;
+  // Get the half direction in world space
+  vec3 halfDir = normalize(s.viewDirection + info.lightDir);
+  float NdotH = max(0.0, dot(s.normal, halfDir));
+  NdotH = pow(NdotH, max(1.0, s.glossiness * 128.0));
+
+  result.diffuse = info.radiance * max(0.0, dot(s.normal, info.lightDir));
+  result.specular = info.radiance * NdotH;
+
+  return result;
+}
+
+vec4 composePhongShading (Lighting lighting, PhongSurface s) {
+  vec4 o = vec4(0.0, 0.0, 0.0, 1.0);
+
+  //diffuse is always calculated
+  o.rgb = lighting.diffuse * s.diffuse;
+  
+  #if USE_EMISSIVE
+    o.rgb += s.emissive;
+  #endif
+
+  #if USE_SPECULAR
+    o.rgb += lighting.specular * s.specular;
+  #endif
+
+  o.a = s.opacity;
+
+  return o;
+}
+
+vec3 ambient(PhongSurface s, vec4 ambientColor) {
+  return s.diffuse * ambientColor.rgb;
+}
+
+vec4 CCPhongShading (in PhongSurface s) {
+  Lighting result;
+  CC_CALC_LIGHTS(s, result, brdf, ambient)
+
+  return composePhongShading(result, s);
+}