118 lines
5 KiB
Java
118 lines
5 KiB
Java
package net.minecraft.client.renderer;
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import com.mojang.blaze3d.ProjectionType;
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import com.mojang.blaze3d.systems.RenderSystem;
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import com.mojang.blaze3d.vertex.BufferBuilder;
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import com.mojang.blaze3d.vertex.BufferUploader;
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import com.mojang.blaze3d.vertex.DefaultVertexFormat;
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import com.mojang.blaze3d.vertex.Tesselator;
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import com.mojang.blaze3d.vertex.VertexFormat.Mode;
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import java.util.List;
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import java.util.stream.IntStream;
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import net.fabricmc.api.EnvType;
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import net.fabricmc.api.Environment;
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import net.minecraft.client.Minecraft;
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import net.minecraft.client.renderer.texture.TextureManager;
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import net.minecraft.resources.ResourceLocation;
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import org.joml.Matrix4f;
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import org.joml.Matrix4fStack;
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@Environment(EnvType.CLIENT)
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public class CubeMap {
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private static final int SIDES = 6;
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private final List<ResourceLocation> sides;
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public CubeMap(ResourceLocation baseImageLocation) {
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this.sides = IntStream.range(0, 6).mapToObj(i -> baseImageLocation.withPath(baseImageLocation.getPath() + "_" + i + ".png")).toList();
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}
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public void render(Minecraft mc, float pitch, float yaw, float alpha) {
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Tesselator tesselator = Tesselator.getInstance();
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Matrix4f matrix4f = new Matrix4f().setPerspective(1.4835298F, (float)mc.getWindow().getWidth() / mc.getWindow().getHeight(), 0.05F, 10.0F);
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RenderSystem.backupProjectionMatrix();
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RenderSystem.setProjectionMatrix(matrix4f, ProjectionType.PERSPECTIVE);
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Matrix4fStack matrix4fStack = RenderSystem.getModelViewStack();
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matrix4fStack.pushMatrix();
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matrix4fStack.rotationX((float) Math.PI);
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RenderSystem.setShader(CoreShaders.POSITION_TEX_COLOR);
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RenderSystem.enableBlend();
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RenderSystem.disableCull();
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RenderSystem.depthMask(false);
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int i = 2;
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for (int j = 0; j < 4; j++) {
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matrix4fStack.pushMatrix();
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float f = (j % 2 / 2.0F - 0.5F) / 256.0F;
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float g = (j / 2 / 2.0F - 0.5F) / 256.0F;
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float h = 0.0F;
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matrix4fStack.translate(f, g, 0.0F);
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matrix4fStack.rotateX(pitch * (float) (Math.PI / 180.0));
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matrix4fStack.rotateY(yaw * (float) (Math.PI / 180.0));
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for (int k = 0; k < 6; k++) {
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RenderSystem.setShaderTexture(0, (ResourceLocation)this.sides.get(k));
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BufferBuilder bufferBuilder = tesselator.begin(Mode.QUADS, DefaultVertexFormat.POSITION_TEX_COLOR);
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int l = Math.round(255.0F * alpha) / (j + 1);
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if (k == 0) {
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bufferBuilder.addVertex(-1.0F, -1.0F, 1.0F).setUv(0.0F, 0.0F).setWhiteAlpha(l);
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bufferBuilder.addVertex(-1.0F, 1.0F, 1.0F).setUv(0.0F, 1.0F).setWhiteAlpha(l);
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bufferBuilder.addVertex(1.0F, 1.0F, 1.0F).setUv(1.0F, 1.0F).setWhiteAlpha(l);
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bufferBuilder.addVertex(1.0F, -1.0F, 1.0F).setUv(1.0F, 0.0F).setWhiteAlpha(l);
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}
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if (k == 1) {
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bufferBuilder.addVertex(1.0F, -1.0F, 1.0F).setUv(0.0F, 0.0F).setWhiteAlpha(l);
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bufferBuilder.addVertex(1.0F, 1.0F, 1.0F).setUv(0.0F, 1.0F).setWhiteAlpha(l);
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bufferBuilder.addVertex(1.0F, 1.0F, -1.0F).setUv(1.0F, 1.0F).setWhiteAlpha(l);
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bufferBuilder.addVertex(1.0F, -1.0F, -1.0F).setUv(1.0F, 0.0F).setWhiteAlpha(l);
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}
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if (k == 2) {
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bufferBuilder.addVertex(1.0F, -1.0F, -1.0F).setUv(0.0F, 0.0F).setWhiteAlpha(l);
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bufferBuilder.addVertex(1.0F, 1.0F, -1.0F).setUv(0.0F, 1.0F).setWhiteAlpha(l);
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bufferBuilder.addVertex(-1.0F, 1.0F, -1.0F).setUv(1.0F, 1.0F).setWhiteAlpha(l);
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bufferBuilder.addVertex(-1.0F, -1.0F, -1.0F).setUv(1.0F, 0.0F).setWhiteAlpha(l);
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}
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if (k == 3) {
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bufferBuilder.addVertex(-1.0F, -1.0F, -1.0F).setUv(0.0F, 0.0F).setWhiteAlpha(l);
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bufferBuilder.addVertex(-1.0F, 1.0F, -1.0F).setUv(0.0F, 1.0F).setWhiteAlpha(l);
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bufferBuilder.addVertex(-1.0F, 1.0F, 1.0F).setUv(1.0F, 1.0F).setWhiteAlpha(l);
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bufferBuilder.addVertex(-1.0F, -1.0F, 1.0F).setUv(1.0F, 0.0F).setWhiteAlpha(l);
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}
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if (k == 4) {
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bufferBuilder.addVertex(-1.0F, -1.0F, -1.0F).setUv(0.0F, 0.0F).setWhiteAlpha(l);
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bufferBuilder.addVertex(-1.0F, -1.0F, 1.0F).setUv(0.0F, 1.0F).setWhiteAlpha(l);
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bufferBuilder.addVertex(1.0F, -1.0F, 1.0F).setUv(1.0F, 1.0F).setWhiteAlpha(l);
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bufferBuilder.addVertex(1.0F, -1.0F, -1.0F).setUv(1.0F, 0.0F).setWhiteAlpha(l);
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}
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if (k == 5) {
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bufferBuilder.addVertex(-1.0F, 1.0F, 1.0F).setUv(0.0F, 0.0F).setWhiteAlpha(l);
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bufferBuilder.addVertex(-1.0F, 1.0F, -1.0F).setUv(0.0F, 1.0F).setWhiteAlpha(l);
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bufferBuilder.addVertex(1.0F, 1.0F, -1.0F).setUv(1.0F, 1.0F).setWhiteAlpha(l);
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bufferBuilder.addVertex(1.0F, 1.0F, 1.0F).setUv(1.0F, 0.0F).setWhiteAlpha(l);
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}
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BufferUploader.drawWithShader(bufferBuilder.buildOrThrow());
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}
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matrix4fStack.popMatrix();
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RenderSystem.colorMask(true, true, true, false);
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}
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RenderSystem.colorMask(true, true, true, true);
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RenderSystem.restoreProjectionMatrix();
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matrix4fStack.popMatrix();
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RenderSystem.depthMask(true);
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RenderSystem.enableCull();
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RenderSystem.enableDepthTest();
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}
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public void registerTextures(TextureManager textureManager) {
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for (ResourceLocation resourceLocation : this.sides) {
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textureManager.registerForNextReload(resourceLocation);
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}
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}
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}
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