coloredRectRenderType

src/main/kotlin/ru/dbotthepony/mc/otm/client/render/RenderHelper.kt

@@ -5,6 +5,8 @@ import com.mojang.blaze3d.systems.RenderSystem
 import com.mojang.blaze3d.vertex.*
 import com.mojang.math.Matrix4f
 import net.minecraft.client.renderer.GameRenderer
+import net.minecraft.client.renderer.RenderStateShard
+import net.minecraft.client.renderer.RenderType
 import net.minecraft.client.renderer.texture.TextureAtlasSprite
 import org.lwjgl.opengl.GL11
 import org.lwjgl.opengl.GL11.GL_ALWAYS
@@ -668,3 +670,41 @@ fun drawArc(
 		BufferUploader.drawWithShader(builder.end())
 	}
 }
+
+val coloredRectRenderType by lazy {
+	val builder = RenderType.CompositeState.builder()
+
+	builder.setShaderState(RenderStateShard.ShaderStateShard(GameRenderer::getPositionColorShader))
+	builder.setTransparencyState(RenderStateShard.TransparencyStateShard("normal_blend", {
+		RenderSystem.enableBlend()
+		RenderSystem.defaultBlendFunc()
+	}, {
+		RenderSystem.disableBlend()
+	}))
+
+	@Suppress("INACCESSIBLE_TYPE")
+	RenderType.create("colored_rect",
+		DefaultVertexFormat.POSITION_COLOR,
+		VertexFormat.Mode.QUADS,
+		2048,
+		false,
+		false,
+		builder.createCompositeState(false)) as RenderType
+}
+
+fun VertexConsumer.quad(
+	pose: PoseStack,
+	x: Float,
+	y: Float,
+	width: Float,
+	height: Float,
+	z: Float,
+	color: RGBAColor? = null,
+) {
+	val intColor = color?.toARGB() ?: 0
+	val matrix = pose.last().pose()
+	vertex(matrix, x, y + height, z).also { if (color != null) it.color(intColor) }.endVertex()
+	vertex(matrix, x + width, y + height, z).also { if (color != null) it.color(intColor) }.endVertex()
+	vertex(matrix, x + width, y, z).also { if (color != null) it.color(intColor) }.endVertex()
+	vertex(matrix, x, y, z).also { if (color != null) it.color(intColor) }.endVertex()
+}