Experiment with IBL and skybox

JamesTKhan · Jul 9, 2022 · 54646ce · 54646ce
1 parent bc89c08
commit 54646ce
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Showing 2 changed files with 25 additions and 3 deletions.
diff --git a/commons/src/main/com/mbrlabs/mundus/commons/Scene.java b/commons/src/main/com/mbrlabs/mundus/commons/Scene.java
@@ -121,6 +121,13 @@ public Scene() {
     }
 
     private void initPBR() {
+        brdfLUT = new Texture(Gdx.files.classpath("net/mgsx/gltf/shaders/brdfLUT.png"));
+        environment.set(new ColorAttribute(ColorAttribute.AmbientLight, .3f, .3f, .3f, 1));
+        environment.set(new PBRTextureAttribute(PBRTextureAttribute.BRDFLUTTexture, brdfLUT));
+        initIBL();
+    }
+
+    private void initIBL() {
         DirectionalLightEx directionalLightEx = new DirectionalLightEx();
         directionalLightEx.intensity = DirectionalLight.DEFAULT_INTENSITY;
         directionalLightEx.setColor(DirectionalLight.DEFAULT_COLOR);
@@ -132,9 +139,6 @@ private void initPBR() {
         specularCubemap = iblBuilder.buildRadianceMap(10);
         iblBuilder.dispose();
 
-        brdfLUT = new Texture(Gdx.files.classpath("net/mgsx/gltf/shaders/brdfLUT.png"));
-        environment.set(new ColorAttribute(ColorAttribute.AmbientLight, .3f, .3f, .3f, 1));
-        environment.set(new PBRTextureAttribute(PBRTextureAttribute.BRDFLUTTexture, brdfLUT));
         environment.set(PBRCubemapAttribute.createSpecularEnv(specularCubemap));
         environment.set(PBRCubemapAttribute.createDiffuseEnv(diffuseCubemap));
     }
@@ -343,6 +347,12 @@ public void setSkybox(SkyboxAsset skyboxAsset, Shader skyboxShader) {
         skybox.setRotateSpeed(skyboxAsset.rotateSpeed);
         skybox.setRotateEnabled(skyboxAsset.rotateEnabled);
 
+        skybox.setUseIBL(true);
+        if (skybox.useWithIBL()) {
+            environment.set(PBRCubemapAttribute.createDiffuseEnv(skybox.getCubemap()));
+        } else {
+            initIBL();
+        }
     }
 
     @Override

diff --git a/commons/src/main/com/mbrlabs/mundus/commons/skybox/Skybox.java b/commons/src/main/com/mbrlabs/mundus/commons/skybox/Skybox.java
@@ -49,6 +49,7 @@ public class Skybox implements Disposable {
     private FileHandle positiveZ;
     private FileHandle negativeZ;
 
+    private boolean useIBL;
     private boolean rotateEnabled;
     private float rotateSpeed;
 
@@ -121,6 +122,10 @@ public void setRotateEnabled(boolean rotateEnabled) {
             ((SkyboxShader) shader).setRotateEnabled(rotateEnabled);
     }
 
+    public Cubemap getCubemap() {
+        return cubemap;
+    }
+
     public float getRotateSpeed() {
         return rotateSpeed;
     }
@@ -138,4 +143,11 @@ public void dispose() {
         cubemap.dispose();
     }
 
+    public void setUseIBL(boolean value) {
+        useIBL = value;
+    }
+
+    public boolean useWithIBL() {
+        return useIBL;
+    }
 }