ShaderParametersDebug.java

/*
 * Copyright 2017 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.shader;

import org.lwjgl.opengl.GL13;
import org.terasology.config.Config;
import org.terasology.registry.CoreRegistry;
import org.terasology.rendering.assets.material.Material;
import org.terasology.rendering.cameras.Camera;
import org.terasology.rendering.dag.nodes.AmbientOcclusionNode;
import org.terasology.rendering.dag.nodes.BloomBlurNode;
import org.terasology.rendering.dag.nodes.HighPassNode;
import org.terasology.rendering.dag.nodes.RefractiveReflectiveBlocksNode;
import org.terasology.rendering.dag.nodes.LightShaftsNode;
import org.terasology.rendering.dag.nodes.OutlineNode;
import org.terasology.rendering.dag.nodes.ShadowMapNode;
import org.terasology.rendering.dag.nodes.HazeNode;
import static org.terasology.rendering.opengl.DefaultDynamicFBOs.READ_ONLY_GBUFFER;
import org.terasology.rendering.opengl.fbms.DisplayResolutionDependentFBOs;
import org.terasology.rendering.opengl.fbms.ShadowMapResolutionDependentFBOs;
import org.terasology.rendering.world.WorldRenderer;

/**
 * Shader parameters for the Debug shader program.
 *
 */
public class ShaderParametersDebug extends ShaderParametersBase {

    @Override
    public void applyParameters(Material program) {
        super.applyParameters(program);

        Config config = CoreRegistry.get(Config.class);

        int texId = 0;

        // TODO: switch from CoreRegistry to Context
        DisplayResolutionDependentFBOs displayResolutionDependentFBOs = CoreRegistry.get(DisplayResolutionDependentFBOs.class);
        ShadowMapResolutionDependentFBOs shadowMapResolutionDependentFBOs = CoreRegistry.get(ShadowMapResolutionDependentFBOs.class);


        // TODO: review - might have to go into a debug node


        switch (config.getRendering().getDebug().getStage()) {
            case SHADOW_MAP:
                GL13.glActiveTexture(GL13.GL_TEXTURE0 + texId);
                shadowMapResolutionDependentFBOs.bindFboDepthTexture(ShadowMapNode.SHADOW_MAP);
                program.setInt("texDebug", texId++, true);
                break;
            case OPAQUE_COLOR:
                GL13.glActiveTexture(GL13.GL_TEXTURE0 + texId);
                displayResolutionDependentFBOs.bindFboColorTexture(READ_ONLY_GBUFFER.getName());
                program.setInt("texDebug", texId++, true);
                break;
            case OPAQUE_NORMALS:
                GL13.glActiveTexture(GL13.GL_TEXTURE0 + texId);
                displayResolutionDependentFBOs.bindFboNormalsTexture(READ_ONLY_GBUFFER.getName());
                program.setInt("texDebug", texId++, true);
                break;
            case OPAQUE_DEPTH:
                GL13.glActiveTexture(GL13.GL_TEXTURE0 + texId);
                displayResolutionDependentFBOs.bindFboDepthTexture(READ_ONLY_GBUFFER.getName());
                program.setInt("texDebug", texId++, true);
                break;
            case OPAQUE_SUNLIGHT:
            case OPAQUE_LIGHT_BUFFER:
                GL13.glActiveTexture(GL13.GL_TEXTURE0 + texId);
                displayResolutionDependentFBOs.bindFboLightBufferTexture(READ_ONLY_GBUFFER.getName());
                program.setInt("texDebug", texId++, true);
                break;
            case TRANSPARENT_COLOR:
                GL13.glActiveTexture(GL13.GL_TEXTURE0 + texId);
                displayResolutionDependentFBOs.bindFboColorTexture(RefractiveReflectiveBlocksNode.REFRACTIVE_REFLECTIVE);
                program.setInt("texDebug", texId++, true);
                break;
            case SSAO:
                GL13.glActiveTexture(GL13.GL_TEXTURE0 + texId);
                displayResolutionDependentFBOs.bindFboColorTexture(AmbientOcclusionNode.SSAO_FBO);
                program.setInt("texDebug", texId++, true);
                break;
            case SOBEL:
                GL13.glActiveTexture(GL13.GL_TEXTURE0 + texId);
                displayResolutionDependentFBOs.bindFboColorTexture(OutlineNode.OUTLINE);
                program.setInt("texDebug", texId++, true);
                break;
            case BAKED_OCCLUSION:
                GL13.glActiveTexture(GL13.GL_TEXTURE0 + texId);
                displayResolutionDependentFBOs.bindFboColorTexture(READ_ONLY_GBUFFER.getName());
                program.setInt("texDebug", texId++, true);
                break;
            case RECONSTRUCTED_POSITION:
                Camera activeCamera = CoreRegistry.get(WorldRenderer.class).getActiveCamera();
                if (activeCamera != null) {
                    program.setMatrix4("invProjMatrix", activeCamera.getInverseProjectionMatrix(), true);
                }

                GL13.glActiveTexture(GL13.GL_TEXTURE0 + texId);
                displayResolutionDependentFBOs.bindFboDepthTexture(READ_ONLY_GBUFFER.getName());
                program.setInt("texDebug", texId++, true);
                break;
            case BLOOM:
                GL13.glActiveTexture(GL13.GL_TEXTURE0 + texId);
                displayResolutionDependentFBOs.bindFboColorTexture(BloomBlurNode.ONE_8TH_SCALE_FBO);
                program.setInt("texDebug", texId++, true);
                break;
            case HIGH_PASS:
                GL13.glActiveTexture(GL13.GL_TEXTURE0 + texId);
                displayResolutionDependentFBOs.bindFboColorTexture(HighPassNode.HIGH_PASS_FBO);
                program.setInt("texDebug", texId++, true);
                break;
            case SKY_BAND:
                GL13.glActiveTexture(GL13.GL_TEXTURE0 + texId);
                displayResolutionDependentFBOs.bindFboColorTexture(HazeNode.FINAL_HAZE);
                program.setInt("texDebug", texId++, true);
                break;
            case LIGHT_SHAFTS:
                GL13.glActiveTexture(GL13.GL_TEXTURE0 + texId);
                displayResolutionDependentFBOs.bindFboColorTexture(LightShaftsNode.LIGHT_SHAFTS_FBO);
                program.setInt("texDebug", texId++, true);
                break;
            default:
                break;
        }

        program.setInt("debugRenderingStage", CoreRegistry.get(Config.class).getRendering().getDebug().getStage().getIndex());
    }
}