/*
* Copyright 2016 MovingBlocks
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.terasology.rendering.dag.stateChanges;
import com.google.common.base.Objects;
import org.terasology.registry.CoreRegistry;
import org.terasology.rendering.ShaderManager;
import org.terasology.rendering.assets.material.Material;
import org.terasology.rendering.dag.RenderPipelineTask;
import org.terasology.rendering.dag.StateChange;
import org.terasology.utilities.Assets;
/**
* TODO: Add javadocs
*/
public final class EnableMaterial implements StateChange {
private static final String DEFAULT_MATERIAL_NAME = "DEFAULT";
private static EnableMaterial defaultInstance = new EnableMaterial(DEFAULT_MATERIAL_NAME);
private RenderPipelineTask task;
private String materialName;
public EnableMaterial(String materialName) {
this.materialName = materialName;
}
public String getMaterialName() {
return materialName;
}
@Override
public StateChange getDefaultInstance() {
return defaultInstance;
}
@Override
public RenderPipelineTask generateTask() {
if (task == null) {
if (materialName.equals(DEFAULT_MATERIAL_NAME)) {
task = new DisableMaterialTask();
} else {
Material shader = getMaterial(materialName);
task = new EnableMaterialTask(shader, materialName);
}
}
return task;
}
@Override
public int hashCode() {
return Objects.hashCode(materialName);
}
@Override
public boolean equals(Object obj) {
return (obj instanceof EnableMaterial) && materialName.equals(((EnableMaterial) obj).getMaterialName());
}
@Override
public boolean isTheDefaultInstance() {
return this.equals(defaultInstance);
}
private static Material getMaterial(String assetId) {
return Assets.getMaterial(assetId).orElseThrow(() ->
new RuntimeException("Failed to resolve required asset: '" + assetId + "'"));
}
@Override
public String toString() {
return String.format("%30s: %s", this.getClass().getSimpleName(), materialName);
}
private class DisableMaterialTask implements RenderPipelineTask {
private ShaderManager shaderManager = CoreRegistry.get(ShaderManager.class);
@Override
public void execute() {
shaderManager.disableShader();
}
@Override
public String toString() {
return String.format("%30s: program 0", this.getClass().getSimpleName());
}
}
private class EnableMaterialTask implements RenderPipelineTask {
private Material material;
private String materialName;
private EnableMaterialTask(Material material, String materialName) {
this.material = material;
this.materialName = materialName;
}
@Override
public void execute() {
material.enable();
}
@Override
public String toString() {
return String.format("%30s: %s", this.getClass().getSimpleName(), materialName);
}
}
}