Move doLighting to separate file

files/shaders/CMakeLists.txt

@@ -8,6 +8,7 @@ set(SHADER_FILES
     water_nm.png
     objects_vertex.glsl
     objects_fragment.glsl
+    lighting.glsl
 )
 
 copy_all_files(${CMAKE_CURRENT_SOURCE_DIR} ${DDIR} "${SHADER_FILES}")

files/shaders/lighting.glsl

@@ -0,0 +1,37 @@
+#define MAX_LIGHTS 8
+
+vec4 doLighting(vec3 viewPos, vec3 viewNormal, vec4 vertexColor)
+{
+    vec3 lightDir;
+    float d;
+
+#if @colorMode == 2
+    vec4 diffuse = vertexColor;
+    vec3 ambient = vertexColor.xyz;
+#else
+    vec4 diffuse = gl_FrontMaterial.diffuse;
+    vec3 ambient = gl_FrontMaterial.ambient.xyz;
+#endif
+    vec4 lightResult = vec4(0.0, 0.0, 0.0, diffuse.a);
+
+    for (int i=0; i<MAX_LIGHTS; ++i)
+    {
+        lightDir = gl_LightSource[i].position.xyz - (viewPos.xyz * gl_LightSource[i].position.w);
+        d = length(lightDir);
+        lightDir = normalize(lightDir);
+
+        lightResult.xyz += ambient * gl_LightSource[i].ambient.xyz;
+        lightResult.xyz += diffuse.xyz * gl_LightSource[i].diffuse.xyz * clamp(1.0 / (gl_LightSource[i].constantAttenuation + gl_LightSource[i].linearAttenuation * d + gl_LightSource[i].quadraticAttenuation * d * d), 0.0, 1.0)
+                * max(dot(viewNormal.xyz, lightDir), 0.0);
+    }
+
+    lightResult.xyz += gl_LightModel.ambient.xyz * ambient;
+
+#if @colorMode == 1
+    lightResult.xyz += vertexColor.xyz;
+#else
+    lightResult.xyz += gl_FrontMaterial.emission.xyz;
+#endif
+
+    return lightResult;
+}

files/shaders/objects_vertex.glsl

@@ -20,44 +20,7 @@ varying float depth;
 
 varying vec4 lighting;
 
-#define MAX_LIGHTS 8
-
-vec4 doLighting(vec3 viewPos, vec3 viewNormal, vec4 vertexColor)
-{
-    vec3 lightDir;
-    float d;
-
-#if @colorMode == 2
-    vec4 diffuse = vertexColor;
-    vec3 ambient = vertexColor.xyz;
-#else
-    vec4 diffuse = gl_FrontMaterial.diffuse;
-    vec3 ambient = gl_FrontMaterial.ambient.xyz;
-#endif
-    vec4 lightResult = vec4(0.0, 0.0, 0.0, diffuse.a);
-
-    for (int i=0; i<MAX_LIGHTS; ++i)
-    {
-        lightDir = gl_LightSource[i].position.xyz - (viewPos.xyz * gl_LightSource[i].position.w);
-        d = length(lightDir);
-        lightDir = normalize(lightDir);
-
-        lightResult.xyz += ambient * gl_LightSource[i].ambient.xyz;
-        lightResult.xyz += diffuse.xyz * gl_LightSource[i].diffuse.xyz * clamp(1.0 / (gl_LightSource[i].constantAttenuation + gl_LightSource[i].linearAttenuation * d + gl_LightSource[i].quadraticAttenuation * d * d), 0.0, 1.0)
-                * max(dot(viewNormal.xyz, lightDir), 0.0);
-    }
-
-    lightResult.xyz += gl_LightModel.ambient.xyz * ambient;
-
-#if @colorMode == 1
-    lightResult.xyz += vertexColor.xyz;
-#else
-    lightResult.xyz += gl_FrontMaterial.emission.xyz;
-#endif
-
-    return lightResult;
-}
-
+#include "lighting.glsl"
 
 void main(void)
 {