palette postprocess

assets/shaders/fshader.glsl

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+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec3 fragPosition;
+in vec2 fragTexCoord;
+in vec4 fragColor;
+in vec3 fragNormal;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// Output fragment color
+out vec4 finalColor;
+
+#define MAX_LIGHTS 12
+
+struct Light {
+    int enabled;
+    float distanceNear;
+    float distanceFar;
+    float power;
+    vec3 position;
+    vec4 color;
+};
+
+uniform Light lights[MAX_LIGHTS];
+uniform vec4 ambient;
+
+
+void main()
+{
+    vec4 texelColor = texture(texture0, fragTexCoord);
+    if (texelColor.a == 0.0) discard;
+    if (fragColor.b < 1.0) {
+    	finalColor = vec4(1.0, 1.0, 1.0, 1.0);
+    } else {
+        vec3 lightDot = vec3(0.0);
+        vec4 tint = colDiffuse * fragColor;
+        vec3 normal = normalize(fragNormal);
+        
+        for (int i = 0; i < MAX_LIGHTS; i++) {
+            if (lights[i].enabled == 1) {
+                vec3 light = vec3(0.0);
+
+                light = normalize(lights[i].position - fragPosition);
+
+                float dist = distance(lights[i].position, fragPosition);
+                
+                float power = smoothstep(lights[i].distanceFar, lights[i].distanceNear, dist);
+                // float far = smoothstep(30.0, 1.0, dist) / 3.0;
+                // float power = near + far * far * far;
+                power = power * power;
+                float NdotL = max(dot(normal, light), 0.0);
+                // lightDot += lights[i].color.rgb * light * NdotL;
+                // lightDot += lights[i].color.rgb * power * NdotL;
+                lightDot += lights[i].color.rgb * power * lights[i].power;
+         
+            }
+        }   
+        finalColor.rgb = (texelColor.rgb * lightDot);
+        // finalColor.rgb = normal;
+        // finalColor = (texelColor * vec4(lightDot, 1.0));
+        // finalColor = pow(finalColor, vec4(1.0/2.2));
+        // finalColor.rgb = fragPosition;
+    }
+}

assets/shaders/postprocess.glsl

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+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec3 fragPosition;
+in vec2 fragTexCoord;
+in vec4 fragColor;
+in vec3 fragNormal;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform sampler2D texture1;
+uniform vec4 colDiffuse;
+
+#define POSTERIZE 5.0
+
+out vec4 finalColor;
+
+void main() {
+    vec4 texelColor = texture(texture0, fragTexCoord);
+    float grey = 0.21 * texelColor.r + 0.71 * texelColor.g + 0.07 * texelColor.b ;
+    vec2 paluv = vec2(grey, 0.5);
+    vec4 paletteValue = texture(texture1, paluv);
+
+    finalColor.a = 1.0;
+    // finalColor.rgb = floor(texelColor.rgb * POSTERIZE) / POSTERIZE;
+
+    finalColor.rgb = paletteValue.rgb;
+    //
+    // finalColor.rgb = vec3(mean) + paletteValue.rgb;
+}

assets/shaders/vshader.glsl

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+
+
+#version 330
+
+// Input vertex attributes
+in vec3 vertexPosition;
+in vec2 vertexTexCoord;
+in vec3 vertexNormal;
+in vec4 vertexColor;
+
+// Input uniform values
+uniform mat4 mvp;
+uniform mat4 matModel;
+uniform mat4 matNormal;
+
+// Output vertex attributes (to fragment shader)
+out vec3 fragPosition;
+out vec2 fragTexCoord;
+out vec4 fragColor;
+out vec3 fragNormal;
+
+// NOTE: Add your custom variables here
+
+void main()
+{
+    // Send vertex attributes to fragment shader
+    fragPosition = vec3(matModel*vec4(vertexPosition, 1.0));
+    // fragPosition = vertexPosition;
+    fragTexCoord = vertexTexCoord;
+    fragColor = vertexColor;
+    fragNormal = normalize(vec3(matNormal*vec4(vertexNormal, 1.0)));
+
+    // Calculate final vertex position
+    gl_Position = mvp*vec4(vertexPosition, 1.0);
+}