Update deferred_shading.fs for GLES3

examples/shaders/resources/shaders/glsl100/deferred_shading.fs

@@ -1,12 +1,11 @@
-#version 100
+#version 300 es
  
-precision mediump float;
+precision highp float;
 
-// Input vertex attributes (from vertex shader)
-varying vec2 fragTexCoord;
-varying vec4 fragColor;
+out vec4 finalColor;
+
+in vec2 texCoord;
 
-// Input uniform values
 uniform sampler2D gPosition;
 uniform sampler2D gNormal;
 uniform sampler2D gAlbedoSpec;
@@ -26,14 +25,13 @@ uniform vec3 viewPosition;
 const float QUADRATIC = 0.032;
 const float LINEAR = 0.09;
 
-void main()
-{
-    vec3 fragPosition = texture2D(gPosition, fragTexCoord).rgb;
-    vec3 normal = texture2D(gNormal, fragTexCoord).rgb;
-    vec3 albedo = texture2D(gAlbedoSpec, fragTexCoord).rgb;
-    float specular = texture2D(gAlbedoSpec, fragTexCoord).a;
+void main() {
+    vec3 fragPosition = texture(gPosition, texCoord).rgb;
+    vec3 normal = texture(gNormal, texCoord).rgb;
+    vec3 albedo = texture(gAlbedoSpec, texCoord).rgb;
+    float specular = texture(gAlbedoSpec, texCoord).a;
 
-    vec3 ambient = albedo*vec3(0.1);
+    vec3 ambient = albedo * vec3(0.1f);
     vec3 viewDirection = normalize(viewPosition - fragPosition);
 
     for(int i = 0; i < NR_LIGHTS; ++i)
@@ -54,6 +52,5 @@ void main()
         ambient += diffuse + specular;
     }
 
-    gl_FragColor = vec4(ambient, 1.0);
+    finalColor = vec4(ambient, 1.0);
 }
-