Impl v1

src/main/java/net/coderbot/iris/IrisApiV0Impl.java

@@ -4,10 +4,15 @@
 import net.coderbot.iris.pipeline.FixedFunctionWorldRenderingPipeline;
 import net.coderbot.iris.pipeline.WorldRenderingPipeline;
 import net.coderbot.iris.shadows.ShadowRenderingState;
+import net.coderbot.iris.vertices.IrisTextVertexSinkImpl;
 import net.irisshaders.iris.api.v0.IrisApi;
 import net.irisshaders.iris.api.v0.IrisApiConfig;
+import net.irisshaders.iris.api.v0.IrisTextVertexSink;
 import net.minecraft.client.gui.screens.Screen;
 
+import java.nio.ByteBuffer;
+import java.util.function.IntFunction;
+
 public class IrisApiV0Impl implements IrisApi {
 	public static final IrisApiV0Impl INSTANCE = new IrisApiV0Impl();
 	private static final IrisApiV0ConfigImpl CONFIG = new IrisApiV0ConfigImpl();
@@ -47,4 +52,9 @@ public String getMainScreenLanguageKey() {
 	public IrisApiConfig getConfig() {
 		return CONFIG;
 	}
+
+	@Override
+	public IrisTextVertexSink createTextVertexSink(int maxQuadCount, IntFunction<ByteBuffer> bufferProvider) {
+		return new IrisTextVertexSinkImpl(maxQuadCount, bufferProvider);
+	}
 }

src/main/java/net/coderbot/iris/vertices/IrisTextVertexSinkImpl.java

@@ -0,0 +1,68 @@
+package net.coderbot.iris.vertices;
+
+import com.mojang.blaze3d.platform.MemoryTracker;
+import com.mojang.blaze3d.vertex.VertexFormat;
+import me.jellysquid.mods.sodium.client.gl.attribute.BufferVertexFormat;
+import me.jellysquid.mods.sodium.client.model.vertex.buffer.VertexBufferView;
+import net.coderbot.iris.compat.sodium.impl.vertex_format.entity_xhfp.GlyphVertexBufferWriterUnsafe;
+import net.irisshaders.iris.api.v0.IrisTextVertexSink;
+
+import java.nio.ByteBuffer;
+import java.util.function.IntFunction;
+
+public class IrisTextVertexSinkImpl implements IrisTextVertexSink, VertexBufferView {
+	static VertexFormat format = IrisVertexFormats.TERRAIN;
+	private final ByteBuffer buffer;
+	private int vertexCount;
+	private int elementOffset;
+	private GlyphVertexBufferWriterUnsafe drain;
+
+	public IrisTextVertexSinkImpl(int maxQuadSize, IntFunction<ByteBuffer> buffer) {
+		this.buffer = buffer.apply(format.getVertexSize() * 4 * maxQuadSize);
+		this.drain = new GlyphVertexBufferWriterUnsafe(this);
+	}
+
+	@Override
+	public VertexFormat getUnderlyingVertexFormat() {
+		return format;
+	}
+
+	@Override
+	public void quad(float minX, float minY, float maxX, float maxY, float z, int color, float minU, float minV, float maxU, float maxV, int light) {
+		drain.writeGlyph(minX, minY, 0.0F, color, minU, minV, light);
+		drain.writeGlyph(minX, maxY, 0.0F, color, minU, maxV, light);
+		drain.writeGlyph(maxX, maxY, 0.0F, color, maxU, maxV, light);
+		drain.writeGlyph(maxX, minY, 0.0F, color, maxU, minV, light);
+	}
+
+	@Override
+	public void flush() {
+		drain.flush();
+	}
+
+	@Override
+	public boolean ensureBufferCapacity(int i) {
+		return false;
+	}
+
+	@Override
+	public ByteBuffer getDirectBuffer() {
+		return buffer;
+	}
+
+	@Override
+	public int getWriterPosition() {
+		return this.elementOffset;
+	}
+
+	@Override
+	public void flush(int i, BufferVertexFormat bufferVertexFormat) {
+		this.vertexCount += vertexCount;
+		this.elementOffset += vertexCount * format.getVertexSize();
+	}
+
+	@Override
+	public BufferVertexFormat getVertexFormat() {
+		return BufferVertexFormat.from(format);
+	}
+}

src/main/java/net/irisshaders/iris/api/v0/IrisApi.java

@@ -2,6 +2,9 @@
 
 import net.coderbot.iris.IrisApiV0Impl;
 
+import java.nio.ByteBuffer;
+import java.util.function.IntFunction;
+
 /**
  * The entry point to the Iris API, major version 0. This is currently the latest
  * version of the API.
@@ -22,7 +25,7 @@ static IrisApi getInstance() {
 	 * if they wish to check whether given API calls are available on
 	 * the currently installed Iris version.
 	 *
-	 * @return The current minor revision. Currently, revision 0.
+	 * @return The current minor revision. Currently, revision 1.
 	 */
 	int getMinorApiRevision();
 
@@ -94,4 +97,10 @@ static IrisApi getInstance() {
 	 * @since API v0.0
 	 */
 	IrisApiConfig getConfig();
+
+	/**
+	 * Gets a text vertex sink to render into.
+	 * @since API 0.1
+	 */
+	IrisTextVertexSink createTextVertexSink(int maxQuadCount, IntFunction<ByteBuffer> bufferProvider);
 }

src/main/java/net/irisshaders/iris/api/v0/IrisTextVertexSink.java

@@ -0,0 +1,9 @@
+package net.irisshaders.iris.api.v0;
+
+import com.mojang.blaze3d.vertex.VertexFormat;
+
+public interface IrisTextVertexSink {
+	VertexFormat getUnderlyingVertexFormat();
+	void quad(float x1, float y1, float x2, float y2, float z, int rgba, float u1, float v1, float u2, float v2, int light);
+	void flush();
+}