60 lines
2.7 KiB
Java
60 lines
2.7 KiB
Java
package com.atsuishio.superbwarfare.client;
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import com.mojang.blaze3d.systems.RenderSystem;
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import com.mojang.blaze3d.vertex.*;
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import net.minecraft.client.Minecraft;
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import net.minecraft.client.gui.GuiGraphics;
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import net.minecraft.client.renderer.GameRenderer;
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import net.minecraft.client.renderer.culling.Frustum;
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import net.minecraft.resources.ResourceLocation;
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import net.minecraft.world.phys.Vec3;
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import org.joml.Matrix4f;
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import org.joml.Vector3f;
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import javax.annotation.Nullable;
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public class RenderHelper {
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public static void preciseBlit(GuiGraphics gui, ResourceLocation pAtlasLocation, float pX, float pY, float pUOffset, float pVOffset, float pWidth, float pHeight, float pTextureWidth, float pTextureHeight) {
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float pX2 = pX + pWidth;
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float pY2 = pY + pHeight;
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float pBlitOffset = 0;
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float pMinU = pUOffset / pTextureWidth;
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float pMaxU = (pUOffset + pWidth) / pTextureWidth;
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float pMinV = pVOffset / pTextureHeight;
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float pMaxV = (pVOffset + pHeight) / pTextureHeight;
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RenderSystem.setShaderTexture(0, pAtlasLocation);
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RenderSystem.setShader(GameRenderer::getPositionTexShader);
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Matrix4f matrix4f = gui.pose().last().pose();
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BufferBuilder bufferbuilder = Tesselator.getInstance().getBuilder();
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bufferbuilder.begin(VertexFormat.Mode.QUADS, DefaultVertexFormat.POSITION_TEX);
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bufferbuilder.vertex(matrix4f, pX, pY, pBlitOffset).uv(pMinU, pMinV).endVertex();
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bufferbuilder.vertex(matrix4f, pX, pY2, pBlitOffset).uv(pMinU, pMaxV).endVertex();
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bufferbuilder.vertex(matrix4f, pX2, pY2, pBlitOffset).uv(pMaxU, pMaxV).endVertex();
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bufferbuilder.vertex(matrix4f, pX2, pY, pBlitOffset).uv(pMaxU, pMinV).endVertex();
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BufferUploader.drawWithShader(bufferbuilder.end());
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}
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/**
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* Codes based on @Xjqsh
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*/
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@Nullable
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public static Vec3 worldToScreen(Vec3 pos, Vec3 cameraPos) {
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Minecraft minecraft = Minecraft.getInstance();
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Frustum frustum = minecraft.levelRenderer.getFrustum();
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Vector3f relativePos = pos.subtract(cameraPos).toVector3f();
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Vector3f transformedPos = frustum.matrix.transformProject(relativePos.x, relativePos.y, relativePos.z, new Vector3f());
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double scaleFactor = minecraft.getWindow().getGuiScale();
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float guiScaleMul = 0.5f / (float) scaleFactor;
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Vector3f screenPos = transformedPos.mul(1.0f, -1.0f, 1.0f).add(1.0f, 1.0f, 0.0f)
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.mul(guiScaleMul * minecraft.getWindow().getWidth(), guiScaleMul * minecraft.getWindow().getHeight(), 1.0f);
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return transformedPos.z < 1.0f ? new Vec3(screenPos.x, screenPos.y, transformedPos.z) : null;
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}
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}
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