BCLib/src/main/java/ru/bclib/mixin/client/TextureAtlasMixin.java
2021-08-01 14:05:41 +03:00

103 lines
3.7 KiB
Java

package ru.bclib.mixin.client;
import com.mojang.blaze3d.platform.NativeImage;
import net.fabricmc.fabric.impl.client.texture.FabricSprite;
import net.fabricmc.loader.api.FabricLoader;
import net.minecraft.client.renderer.texture.TextureAtlas;
import net.minecraft.client.renderer.texture.TextureAtlasSprite;
import net.minecraft.resources.ResourceLocation;
import net.minecraft.server.packs.resources.Resource;
import net.minecraft.server.packs.resources.ResourceManager;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.injection.At;
import org.spongepowered.asm.mixin.injection.Inject;
import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
import ru.bclib.BCLib;
import ru.bclib.client.render.EmissiveTextureInfo;
import java.io.IOException;
@Mixin(TextureAtlas.class)
public class TextureAtlasMixin {
private static final int EMISSIVE_ALPHA = 254 << 24;
private boolean bclib_modifyAtlas;
@Inject(method = "<init>*", at = @At("TAIL"))
private void bclib_onAtlasInit(ResourceLocation resourceLocation, CallbackInfo info) {
boolean hasOptifine = FabricLoader.getInstance().isModLoaded("optifabric");
bclib_modifyAtlas = !hasOptifine && resourceLocation.toString().equals("minecraft:textures/atlas/blocks.png");
if (bclib_modifyAtlas) {
EmissiveTextureInfo.clear();
}
}
@Inject(method = "load(Lnet/minecraft/server/packs/resources/ResourceManager;Lnet/minecraft/client/renderer/texture/TextureAtlasSprite$Info;IIIII)Lnet/minecraft/client/renderer/texture/TextureAtlasSprite;", at = @At("HEAD"), cancellable = true)
private void bclib_loadSprite(ResourceManager resourceManager, TextureAtlasSprite.Info spriteInfo, int atlasWidth, int atlasHeight, int maxLevel, int posX, int posY, CallbackInfoReturnable<TextureAtlasSprite> info) {
if (!bclib_modifyAtlas) {
return;
}
ResourceLocation location = spriteInfo.name();
if (!location.getPath().startsWith("block")) {
return;
}
ResourceLocation emissiveLocation = new ResourceLocation(
location.getNamespace(),
"textures/" + location.getPath() + "_e.png"
);
if (resourceManager.hasResource(emissiveLocation)) {
NativeImage sprite = null;
NativeImage emission = null;
try {
ResourceLocation spriteLocation = new ResourceLocation(
location.getNamespace(),
"textures/" + location.getPath() + ".png"
);
Resource resource = resourceManager.getResource(spriteLocation);
sprite = NativeImage.read(resource.getInputStream());
resource.close();
resource = resourceManager.getResource(emissiveLocation);
emission = NativeImage.read(resource.getInputStream());
resource.close();
}
catch (IOException e) {
BCLib.LOGGER.warning(e.getMessage());
}
if (sprite != null && emission != null) {
int width = Math.min(sprite.getWidth(), emission.getWidth());
int height = Math.min(sprite.getHeight(), emission.getHeight());
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
int argb = emission.getPixelRGBA(x, y);
int alpha = (argb >> 24) & 255;
if (alpha > 127) {
int r = (argb >> 16) & 255;
int g = (argb >> 8) & 255;
int b = argb & 255;
if (r > 0 || g > 0 || b > 0) {
argb = (argb & 0x00FFFFFF) | EMISSIVE_ALPHA;
sprite.setPixelRGBA(x, y, argb);
}
}
}
}
TextureAtlas self = (TextureAtlas) (Object) this;
FabricSprite result = new FabricSprite(
self,
spriteInfo,
maxLevel,
atlasWidth,
atlasHeight,
posX,
posY,
sprite
);
EmissiveTextureInfo.addTexture(location);
info.setReturnValue(result);
}
}
}
}