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cev-apicev-api
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Custom Shader Background Support
1 parent 6dcb7c5 commit 5a45157

6 files changed

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‎src/main/java/net/wurstclient/mixin/ShaderManagerMixin.java‎

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/*
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* Copyright (c) 2014-2026 Wurst-Imperium and contributors.
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*
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* This source code is subject to the terms of the GNU General Public
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* License, version 3. If a copy of the GPL was not distributed with this
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* file, You can obtain one at: https://www.gnu.org/licenses/gpl-3.0.txt
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*/
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package net.wurstclient.mixin;
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import java.util.Map;
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import org.spongepowered.asm.mixin.Mixin;
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import org.spongepowered.asm.mixin.injection.At;
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import org.spongepowered.asm.mixin.injection.ModifyVariable;
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import com.google.common.collect.ImmutableMap;
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import com.mojang.blaze3d.shaders.ShaderType;
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import net.minecraft.client.renderer.ShaderManager;
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import net.minecraft.resources.Identifier;
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import net.minecraft.server.packs.resources.Resource;
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import net.wurstclient.util.ShadertoyBackgroundManager;
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@Mixin(ShaderManager.class)
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public abstract class ShaderManagerMixin
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{
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@ModifyVariable(
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method = "loadShader(Lnet/minecraft/resources/Identifier;Lnet/minecraft/server/packs/resources/Resource;Lcom/mojang/blaze3d/shaders/ShaderType;Ljava/util/Map;Lcom/google/common/collect/ImmutableMap$Builder;)V",
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at = @At("HEAD"),
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argsOnly = true,
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ordinal = 0)
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private static Resource replaceTitleShadertoyShader(Resource resource,
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Identifier id, Resource originalResource, ShaderType shaderType,
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Map<Identifier, Resource> includes, ImmutableMap.Builder<?, ?> builder)
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{
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return ShadertoyBackgroundManager.getCustomShaderResource(id)
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.orElse(resource);
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}
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}

‎src/main/java/net/wurstclient/options/CustomShadertoyBackgroundScreen.java‎

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/*
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* Copyright (c) 2014-2026 Wurst-Imperium and contributors.
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*
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* This source code is subject to the terms of the GNU General Public
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* License, version 3. If a copy of the GPL was not distributed with this
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* file, You can obtain one at: https://www.gnu.org/licenses/gpl-3.0.txt
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*/
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package net.wurstclient.options;
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import net.minecraft.client.gui.GuiGraphicsExtractor;
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import net.minecraft.client.gui.components.Button;
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import net.minecraft.client.gui.components.EditBox;
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import net.minecraft.client.gui.components.MultiLineEditBox;
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import net.minecraft.client.gui.screens.Screen;
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import net.minecraft.network.chat.Component;
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import net.minecraft.util.CommonColors;
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import net.wurstclient.WurstClient;
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import net.wurstclient.other_features.WurstOptionsOtf;
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import net.wurstclient.settings.TextFieldSetting;
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import net.wurstclient.util.ShadertoyBackgroundManager;
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import net.wurstclient.util.WurstColors;
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public final class CustomShadertoyBackgroundScreen extends Screen
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{
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private final Screen prevScreen;
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private EditBox urlBox;
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private MultiLineEditBox codeBox;
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private String status = "";
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private boolean loading;
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public CustomShadertoyBackgroundScreen(Screen prevScreen)
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{
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super(Component.literal("Import Shadertoy Background"));
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this.prevScreen = prevScreen;
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}
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@Override
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protected void init()
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{
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WurstOptionsOtf options =
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WurstClient.INSTANCE.getOtfs().wurstOptionsOtf;
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TextFieldSetting urlSetting =
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options.getTitleScreenShadertoyUrlSetting();
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int boxWidth = Math.min(760, width - 40);
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int left = width / 2 - boxWidth / 2;
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int urlY = 58;
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urlBox = new EditBox(font, left, urlY, boxWidth, 20,
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Component.literal("Shadertoy URL"));
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urlBox.setMaxLength(512);
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urlBox.setValue(urlSetting.getValue());
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urlBox.setHint(
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Component.literal("https://www.shadertoy.com/view/Nfc3RM"));
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urlBox.setResponder(urlSetting::setValue);
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addRenderableWidget(urlBox);
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int editorY = urlY + 48;
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int editorHeight = Math.max(120, height - editorY - 96);
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codeBox = MultiLineEditBox.builder().setX(left).setY(editorY)
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.setPlaceholder(Component.literal(
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"Paste raw Shadertoy code here, including mainImage(...)."))
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.build(font, boxWidth, editorHeight,
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Component.literal("Shadertoy code"));
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codeBox.setCharacterLimit(262144);
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codeBox.setValue(ShadertoyBackgroundManager.loadRawShader());
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addRenderableWidget(codeBox);
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int buttonY = editorY + editorHeight + 10;
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int gap = 6;
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int buttonWidth = 112;
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int totalWidth = buttonWidth * 4 + gap * 3;
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int buttonX = width / 2 - totalWidth / 2;
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addRenderableWidget(
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Button.builder(Component.literal("Load URL"), b -> loadUrl())
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.bounds(buttonX, buttonY, buttonWidth, 20).build());
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addRenderableWidget(
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Button.builder(Component.literal("Load Paste"), b -> loadPaste())
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.bounds(buttonX + (buttonWidth + gap), buttonY, buttonWidth, 20)
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.build());
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addRenderableWidget(Button
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.builder(Component.literal("Use Built-in"), b -> useBuiltIn())
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.bounds(buttonX + (buttonWidth + gap) * 2, buttonY, buttonWidth, 20)
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.build());
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addRenderableWidget(Button
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.builder(Component.literal("Back"),
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b -> minecraft.gui.setScreen(prevScreen))
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.bounds(buttonX + (buttonWidth + gap) * 3, buttonY, buttonWidth, 20)
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.build());
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status = ShadertoyBackgroundManager.hasCustomShader()
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? "Custom shader cache is active." : "Using built-in shader.";
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}
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private void loadUrl()
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{
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if(loading)
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return;
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String url = urlBox.getValue().trim();
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if(url.isEmpty())
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{
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status = "Paste a Shadertoy URL first.";
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return;
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}
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loading = true;
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status = "Downloading and converting shader...";
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Thread worker = new Thread(() -> {
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String result;
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try
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{
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result = ShadertoyBackgroundManager.importFromUrl(url);
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}catch(Exception e)
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{
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result = "Failed: " + e.getMessage();
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}
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String finalResult = result;
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minecraft.execute(() -> {
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loading = false;
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status = finalResult;
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if(!finalResult.startsWith("Failed"))
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codeBox
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.setValue(ShadertoyBackgroundManager.loadRawShader());
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});
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}, "Wurst Shadertoy Importer");
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worker.setDaemon(true);
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worker.start();
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}
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private void loadPaste()
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{
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if(loading)
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return;
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String source = codeBox.getValue();
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if(source.isBlank())
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{
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status = "Paste Shadertoy code first.";
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return;
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}
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loading = true;
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status = "Converting pasted shader...";
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Thread worker = new Thread(() -> {
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String result;
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try
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{
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result = ShadertoyBackgroundManager.importFromSource(source);
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}catch(Exception e)
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{
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result = "Failed: " + e.getMessage();
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}
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String finalResult = result;
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minecraft.execute(() -> {
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loading = false;
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status = finalResult;
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});
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}, "Wurst Shadertoy Paste Importer");
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worker.setDaemon(true);
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worker.start();
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}
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private void useBuiltIn()
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{
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try
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{
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ShadertoyBackgroundManager.clearCustomShader();
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status = "Switched back to built-in shader.";
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}catch(Exception e)
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{
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status = "Failed to clear custom shader: " + e.getMessage();
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}
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}
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@Override
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public void onClose()
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{
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minecraft.gui.setScreen(prevScreen);
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}
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@Override
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public void extractRenderState(GuiGraphicsExtractor context, int mouseX,
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int mouseY, float partialTicks)
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{
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context.fillGradient(0, 0, width, height, 0xDA10131B, 0xE0121B29);
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context.centeredText(font, "Import Shadertoy Background", width / 2, 16,
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CommonColors.WHITE);
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context.centeredText(font,
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"Use a URL with an API key, or paste raw single-pass mainImage() code below.",
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width / 2, 30, CommonColors.LIGHT_GRAY);
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context.text(font, "Shadertoy URL", urlBox.getX(), urlBox.getY() - 12,
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CommonColors.LIGHT_GRAY);
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context.text(font, "Raw Shadertoy Code", codeBox.getX(),
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codeBox.getY() - 12, CommonColors.LIGHT_GRAY);
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for(var renderable : renderables)
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renderable.extractRenderState(context, mouseX, mouseY,
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partialTicks);
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int statusColor = status.startsWith("Failed") ? WurstColors.LIGHT_RED
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: CommonColors.LIGHT_GRAY;
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context.centeredText(font, status, width / 2, height - 42, statusColor);
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context.centeredText(font,
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"URL import uses -Dwurst.shadertoyApiKey=<your key> when set; paste import works without a key.",
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width / 2, height - 28, CommonColors.LIGHT_GRAY);
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context.centeredText(font,
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"Multipass/audio/video/cubemap Shadertoys are still unsupported.",
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width / 2, height - 16, CommonColors.LIGHT_GRAY);
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}
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}

‎src/main/java/net/wurstclient/options/WurstOptionsScreen.java‎

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@@ -218,6 +218,11 @@ private void addCoreSection()
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b -> titleScreenShadertoyBackground
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.setChecked(!titleScreenShadertoyBackground.isChecked()));
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addButton(column, () -> "Import Shadertoy",
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"Import a Shadertoy by URL or pasted source code as the menu background.",
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b -> minecraft.gui
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.setScreen(new CustomShadertoyBackgroundScreen(this)));
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addButton(column,
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() -> "Hide Enable Button: " + onOff(hideEnableButton.isChecked()),
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hideEnableButton.getDescription(),

‎src/main/java/net/wurstclient/other_features/WurstOptionsOtf.java‎

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import net.wurstclient.settings.ColorSetting;
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import net.wurstclient.settings.EnumSetting;
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import net.wurstclient.settings.SettingGroup;
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import net.wurstclient.settings.TextFieldSetting;
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import net.wurstclient.util.text.WText;
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@SearchTags({"wurst options", "settings"})
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"Render the animated Shadertoy-style background on the title screen.",
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true);
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private final TextFieldSetting titleScreenShadertoyUrl =
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new TextFieldSetting("Custom Shadertoy URL",
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"Paste a single-pass Shadertoy URL to use as the menu background.",
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"", s -> s == null || s.isBlank() || s.matches(
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"https?://(www\\.)?shadertoy\\.com/(view|embed)/[A-Za-z0-9]{6}.*"));
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private final ColorSetting mojangLogoBackgroundColor =
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new ColorSetting("Mojang logo background color", Color.BLACK);
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@@ -88,6 +95,7 @@ public void linkAdditionalSettings(DisableOtf disableOtf,
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addSetting(customMojangLogoBackground);
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addSetting(customMultiplayerLayout);
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addSetting(titleScreenShadertoyBackground);
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addSetting(titleScreenShadertoyUrl);
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addSetting(mojangLogoBackgroundColor);
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addSetting(disableOtf.getHideEnableButtonSetting());
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addSetting(noTelemetryOtf.getDisableTelemetrySetting());
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return titleScreenShadertoyBackground;
138146
}
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148+
public TextFieldSetting getTitleScreenShadertoyUrlSetting()
149+
{
150+
return titleScreenShadertoyUrl;
151+
}
152+
140153
public boolean isTitleScreenShadertoyBackgroundEnabled()
141154
{
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return titleScreenShadertoyBackground.isChecked();

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