Choose between 2 different implementations of a mapped buffer

- MappedBufferRange (GL30) and MappedFullBuffer (GL15) so far
 - Persistent mapping (optionally?) would be nice

src/main/java/com/jozufozu/flywheel/backend/BufferedModel.java

@@ -3,10 +3,10 @@ package com.jozufozu.flywheel.backend;
 import org.lwjgl.opengl.GL15;
 import org.lwjgl.opengl.GL20;
 
-import com.jozufozu.flywheel.backend.gl.GlBuffer;
-import com.jozufozu.flywheel.backend.gl.GlBufferType;
-import com.jozufozu.flywheel.backend.gl.MappedBufferRange;
 import com.jozufozu.flywheel.backend.gl.attrib.VertexFormat;
+import com.jozufozu.flywheel.backend.gl.buffer.GlBuffer;
+import com.jozufozu.flywheel.backend.gl.buffer.GlBufferType;
+import com.jozufozu.flywheel.backend.gl.buffer.MappedBuffer;
 import com.simibubi.create.foundation.render.TemplateBuffer;
 
 import net.minecraft.client.renderer.BufferBuilder;
@@ -38,14 +38,14 @@ public abstract class BufferedModel extends TemplateBuffer {
 		GL15.glBufferData(GL15.GL_ARRAY_BUFFER, invariantSize, GL15.GL_STATIC_DRAW);
 
 		// mirror it in system memory so we can write to it
-		MappedBufferRange buffer = modelVBO.getBuffer(0, invariantSize);
+		MappedBuffer buffer = modelVBO.getBuffer(0, invariantSize);
 		for (int i = 0; i < vertexCount; i++) {
 			copyVertex(buffer, i);
 		}
-		buffer.unmap();
+		buffer.flush();
 	}
 
-	protected abstract void copyVertex(MappedBufferRange to, int index);
+	protected abstract void copyVertex(MappedBuffer to, int index);
 
 	protected abstract VertexFormat getModelFormat();
 

src/main/java/com/jozufozu/flywheel/backend/core/materials/BasicData.java

@@ -1,6 +1,6 @@
 package com.jozufozu.flywheel.backend.core.materials;
 
-import com.jozufozu.flywheel.backend.gl.MappedBuffer;
+import com.jozufozu.flywheel.backend.gl.buffer.MappedBuffer;
 import com.jozufozu.flywheel.backend.instancing.InstanceData;
 import com.jozufozu.flywheel.backend.instancing.InstancedModel;
 

src/main/java/com/jozufozu/flywheel/backend/core/materials/ModelData.java

@@ -1,6 +1,6 @@
 package com.jozufozu.flywheel.backend.core.materials;
 
-import com.jozufozu.flywheel.backend.gl.MappedBuffer;
+import com.jozufozu.flywheel.backend.gl.buffer.MappedBuffer;
 import com.jozufozu.flywheel.backend.instancing.InstancedModel;
 import com.jozufozu.flywheel.util.RenderUtil;
 import com.mojang.blaze3d.matrix.MatrixStack;

src/main/java/com/jozufozu/flywheel/backend/core/materials/OrientedData.java

@@ -1,6 +1,6 @@
 package com.jozufozu.flywheel.backend.core.materials;
 
-import com.jozufozu.flywheel.backend.gl.MappedBuffer;
+import com.jozufozu.flywheel.backend.gl.buffer.MappedBuffer;
 import com.jozufozu.flywheel.backend.instancing.InstancedModel;
 
 import net.minecraft.util.math.BlockPos;

src/main/java/com/jozufozu/flywheel/backend/gl/MappedBufferRange.java

@@ -1,31 +0,0 @@
-package com.jozufozu.flywheel.backend.gl;
-
-import java.nio.ByteBuffer;
-
-import org.lwjgl.opengl.GL30;
-
-public class MappedBufferRange extends MappedBuffer {
-
-	GlBuffer owner;
-
-	public MappedBufferRange(GlBuffer buffer, ByteBuffer internal) {
-		super(internal);
-		this.owner = buffer;
-	}
-
-	public static MappedBufferRange create(GlBuffer buffer, long offset, long length, int access) {
-		ByteBuffer byteBuffer = GL30.glMapBufferRange(buffer.type.glEnum, offset, length, access);
-
-		return new MappedBufferRange(buffer, byteBuffer);
-	}
-
-	public MappedBuffer unmap() {
-		GL30.glUnmapBuffer(owner.type.glEnum);
-		return this;
-	}
-
-	@Override
-	public void close() throws Exception {
-		unmap();
-	}
-}

src/main/java/com/jozufozu/flywheel/backend/gl/buffer/GlBuffer.java

@@ -1,9 +1,13 @@
-package com.jozufozu.flywheel.backend.gl;
+package com.jozufozu.flywheel.backend.gl.buffer;
 
 import org.lwjgl.opengl.GL15;
 import org.lwjgl.opengl.GL20;
 import org.lwjgl.opengl.GL30;
 
+import com.jozufozu.flywheel.backend.Backend;
+import com.jozufozu.flywheel.backend.gl.GlObject;
+import com.jozufozu.flywheel.backend.gl.versioned.MapBufferRange;
+
 public class GlBuffer extends GlObject {
 
 	protected final GlBufferType type;
@@ -43,8 +47,14 @@ public class GlBuffer extends GlObject {
 		GL15.glBufferData(type.glEnum, size, usage.glEnum);
 	}
 
-	public MappedBufferRange getBuffer(int offset, int length) {
-		return MappedBufferRange.create(this, offset, length, GL30.GL_MAP_WRITE_BIT);
+	public MappedBuffer getBuffer(int offset, int length) {
+		if (Backend.compat.mapBufferRange == MapBufferRange.UNSUPPORTED) {
+			return new MappedBufferRange(this, offset, length, GL30.GL_MAP_WRITE_BIT);
+		} else {
+			MappedFullBuffer fullBuffer = new MappedFullBuffer(this, MappedBufferUsage.WRITE_ONLY);
+			fullBuffer.position(offset);
+			return fullBuffer;
+		}
 	}
 
 	protected void deleteInternal(int handle) {

src/main/java/com/jozufozu/flywheel/backend/gl/buffer/GlBufferType.java

@@ -1,4 +1,4 @@
-package com.jozufozu.flywheel.backend.gl;
+package com.jozufozu.flywheel.backend.gl.buffer;
 
 import org.lwjgl.opengl.GL15C;
 import org.lwjgl.opengl.GL21;

src/main/java/com/jozufozu/flywheel/backend/gl/buffer/GlBufferUsage.java

@@ -1,4 +1,4 @@
-package com.jozufozu.flywheel.backend.gl;
+package com.jozufozu.flywheel.backend.gl.buffer;
 
 import org.lwjgl.opengl.GL15;
 

src/main/java/com/jozufozu/flywheel/backend/gl/buffer/MappedBuffer.java

@@ -1,16 +1,40 @@
-package com.jozufozu.flywheel.backend.gl;
+package com.jozufozu.flywheel.backend.gl.buffer;
 
 import java.nio.ByteBuffer;
 
+import org.lwjgl.opengl.GL15;
+
 public abstract class MappedBuffer implements AutoCloseable {
 
-	private final ByteBuffer internal;
+	protected boolean mapped;
+	protected final GlBuffer owner;
+	protected ByteBuffer internal;
 
-	public MappedBuffer(ByteBuffer internal) {
+	public MappedBuffer(GlBuffer owner) {
+		this.owner = owner;
+	}
+
+	public void setInternal(ByteBuffer internal) {
 		this.internal = internal;
 	}
 
+	protected abstract void checkAndMap();
+
+	public void flush() {
+		if (mapped) {
+			GL15.glUnmapBuffer(owner.type.glEnum);
+			mapped = false;
+			setInternal(null);
+		}
+	}
+
+	@Override
+	public void close() throws Exception {
+		flush();
+	}
+
 	public MappedBuffer putFloatArray(float[] floats) {
+		checkAndMap();
 		internal.asFloatBuffer().put(floats);
 		internal.position(internal.position() + floats.length * 4);
 
@@ -18,32 +42,44 @@ public abstract class MappedBuffer implements AutoCloseable {
 	}
 
 	public MappedBuffer putByteArray(byte[] bytes) {
+		checkAndMap();
 		internal.put(bytes);
 
 		return this;
 	}
 
+	/**
+	 * Position this buffer relative to the 0-index in GPU memory.
+	 *
+	 * @param p
+	 * @return This buffer.
+	 */
 	public MappedBuffer position(int p) {
+		checkAndMap();
 		internal.position(p);
 		return this;
 	}
 
 	public MappedBuffer putFloat(float f) {
+		checkAndMap();
 		internal.putFloat(f);
 		return this;
 	}
 
 	public MappedBuffer putInt(int i) {
+		checkAndMap();
 		internal.putInt(i);
 		return this;
 	}
 
 	public MappedBuffer put(byte b) {
+		checkAndMap();
 		internal.put(b);
 		return this;
 	}
 
 	public MappedBuffer putVec4(float x, float y, float z, float w) {
+		checkAndMap();
 		internal.putFloat(x);
 		internal.putFloat(y);
 		internal.putFloat(z);
@@ -53,6 +89,7 @@ public abstract class MappedBuffer implements AutoCloseable {
 	}
 
 	public MappedBuffer putVec3(float x, float y, float z) {
+		checkAndMap();
 		internal.putFloat(x);
 		internal.putFloat(y);
 		internal.putFloat(z);
@@ -61,6 +98,7 @@ public abstract class MappedBuffer implements AutoCloseable {
 	}
 
 	public MappedBuffer putVec2(float x, float y) {
+		checkAndMap();
 		internal.putFloat(x);
 		internal.putFloat(y);
 
@@ -68,6 +106,7 @@ public abstract class MappedBuffer implements AutoCloseable {
 	}
 
 	public MappedBuffer putVec3(byte x, byte y, byte z) {
+		checkAndMap();
 		internal.put(x);
 		internal.put(y);
 		internal.put(z);
@@ -76,6 +115,7 @@ public abstract class MappedBuffer implements AutoCloseable {
 	}
 
 	public MappedBuffer putVec2(byte x, byte y) {
+		checkAndMap();
 		internal.put(x);
 		internal.put(y);
 

src/main/java/com/jozufozu/flywheel/backend/gl/buffer/MappedBufferRange.java

@@ -0,0 +1,33 @@
+package com.jozufozu.flywheel.backend.gl.buffer;
+
+import com.jozufozu.flywheel.backend.Backend;
+
+public class MappedBufferRange extends MappedBuffer {
+
+	long offset, length;
+	int access;
+
+	public MappedBufferRange(GlBuffer buffer, long offset, long length, int access) {
+		super(buffer);
+		this.offset = offset;
+		this.length = length;
+		this.access = access;
+	}
+
+
+	@Override
+	public MappedBuffer position(int p) {
+		if (p < offset || p >= offset + length) {
+			throw new IndexOutOfBoundsException("Index " + p + " is not mapped");
+		}
+		return super.position(p - (int) offset);
+	}
+
+	@Override
+	protected void checkAndMap() {
+		if (!mapped) {
+			setInternal(Backend.compat.mapBufferRange.mapBuffer(owner.type, offset, length, access));
+			mapped = true;
+		}
+	}
+}

src/main/java/com/jozufozu/flywheel/backend/gl/buffer/MappedBufferUsage.java

@@ -0,0 +1,16 @@
+package com.jozufozu.flywheel.backend.gl.buffer;
+
+import org.lwjgl.opengl.GL15C;
+
+public enum MappedBufferUsage {
+	READ_ONLY(GL15C.GL_READ_ONLY),
+	WRITE_ONLY(GL15C.GL_WRITE_ONLY),
+	READ_WRITE(GL15C.GL_READ_WRITE),
+	;
+
+	int glEnum;
+
+	MappedBufferUsage(int glEnum) {
+		this.glEnum = glEnum;
+	}
+}

src/main/java/com/jozufozu/flywheel/backend/gl/buffer/MappedFullBuffer.java

@@ -0,0 +1,21 @@
+package com.jozufozu.flywheel.backend.gl.buffer;
+
+import org.lwjgl.opengl.GL15;
+
+public class MappedFullBuffer extends MappedBuffer {
+
+	MappedBufferUsage usage;
+
+	public MappedFullBuffer(GlBuffer buffer, MappedBufferUsage usage) {
+		super(buffer);
+		this.usage = usage;
+	}
+
+	@Override
+	protected void checkAndMap() {
+		if (!mapped) {
+			setInternal(GL15.glMapBuffer(owner.type.glEnum, usage.glEnum));
+			mapped = true;
+		}
+	}
+}

src/main/java/com/jozufozu/flywheel/backend/gl/versioned/GlCompat.java

@@ -23,7 +23,7 @@ import com.jozufozu.flywheel.backend.gl.versioned.instancing.VertexArrayObject;
  * most appropriate version of a feature for the current system.
  */
 public class GlCompat {
-	public final MapBuffer mapBuffer;
+	public final MapBufferRange mapBufferRange;
 
 	public final VertexArrayObject vao;
 	public final InstancedArrays instancedArrays;
@@ -34,7 +34,7 @@ public class GlCompat {
 	public final RGPixelFormat pixelFormat;
 
 	public GlCompat(GLCapabilities caps) {
-		mapBuffer = getLatest(MapBuffer.class, caps);
+		mapBufferRange = getLatest(MapBufferRange.class, caps);
 
 		vao = getLatest(VertexArrayObject.class, caps);
 		instancedArrays = getLatest(InstancedArrays.class, caps);

src/main/java/com/jozufozu/flywheel/backend/gl/versioned/MapBuffer.java

@@ -1,94 +0,0 @@
-package com.jozufozu.flywheel.backend.gl.versioned;
-
-import java.nio.ByteBuffer;
-import java.util.function.Consumer;
-
-import org.lwjgl.opengl.ARBMapBufferRange;
-import org.lwjgl.opengl.GL15;
-import org.lwjgl.opengl.GL30;
-import org.lwjgl.opengl.GLCapabilities;
-
-import com.jozufozu.flywheel.backend.gl.GlBufferType;
-
-public enum MapBuffer implements GlVersioned {
-
-	GL30_RANGE {
-		@Override
-		public boolean supported(GLCapabilities caps) {
-			return caps.OpenGL30;
-		}
-
-		public ByteBuffer mapBuffer(GlBufferType target, long offset, long length, int access) {
-			return GL30.glMapBufferRange(target.glEnum, offset, length, access);
-		}
-
-		@Override
-		public void mapBuffer(GlBufferType target, int offset, int length, Consumer<ByteBuffer> upload) {
-			ByteBuffer buffer = mapBuffer(target, offset, length, GL30.GL_MAP_WRITE_BIT);
-
-			upload.accept(buffer);
-			buffer.rewind();
-
-			GL30.glUnmapBuffer(target.glEnum);
-		}
-	},
-	ARB_RANGE {
-		@Override
-		public boolean supported(GLCapabilities caps) {
-			return caps.GL_ARB_map_buffer_range;
-		}
-
-		public ByteBuffer mapBuffer(GlBufferType target, long offset, long length, int access) {
-			return ARBMapBufferRange.glMapBufferRange(target.glEnum, offset, length, access);
-		}
-
-		@Override
-		public void mapBuffer(GlBufferType target, int offset, int length, Consumer<ByteBuffer> upload) {
-			ByteBuffer buffer = ARBMapBufferRange.glMapBufferRange(target.glEnum, offset, length, GL30.GL_MAP_WRITE_BIT);
-
-			upload.accept(buffer);
-			buffer.rewind();
-
-			GL30.glUnmapBuffer(target.glEnum);
-		}
-	},
-	GL15_MAP {
-		@Override
-		public boolean supported(GLCapabilities caps) {
-			return caps.OpenGL15;
-		}
-
-		@Override
-		public void mapBuffer(GlBufferType target, int offset, int length, Consumer<ByteBuffer> upload) {
-			ByteBuffer buffer = GL15.glMapBuffer(target.glEnum, GL15.GL_WRITE_ONLY);
-
-			buffer.position(offset);
-			upload.accept(buffer);
-			buffer.rewind();
-			GL15.glUnmapBuffer(target.glEnum);
-		}
-	},
-	UNSUPPORTED {
-		@Override
-		public boolean supported(GLCapabilities caps) {
-			return true;
-		}
-
-		@Override
-		public void mapBuffer(GlBufferType target, int offset, int length, Consumer<ByteBuffer> upload) {
-			throw new UnsupportedOperationException("glMapBuffer not supported");
-		}
-
-		@Override
-		public void unmapBuffer(int target) {
-			throw new UnsupportedOperationException("glMapBuffer not supported");
-		}
-	};
-
-
-	public void unmapBuffer(int target) {
-		GL15.glUnmapBuffer(target);
-	}
-
-	public abstract void mapBuffer(GlBufferType target, int offset, int length, Consumer<ByteBuffer> upload);
-}

src/main/java/com/jozufozu/flywheel/backend/gl/versioned/MapBufferRange.java

@@ -0,0 +1,49 @@
+package com.jozufozu.flywheel.backend.gl.versioned;
+
+import java.nio.ByteBuffer;
+
+import org.lwjgl.opengl.ARBMapBufferRange;
+import org.lwjgl.opengl.GL30;
+import org.lwjgl.opengl.GLCapabilities;
+
+import com.jozufozu.flywheel.backend.gl.buffer.GlBufferType;
+
+public enum MapBufferRange implements GlVersioned {
+
+	GL30_RANGE {
+		@Override
+		public boolean supported(GLCapabilities caps) {
+			return caps.OpenGL30;
+		}
+
+		@Override
+		public ByteBuffer mapBuffer(GlBufferType target, long offset, long length, int access) {
+			return GL30.glMapBufferRange(target.glEnum, offset, length, access);
+		}
+	},
+	ARB_RANGE {
+		@Override
+		public boolean supported(GLCapabilities caps) {
+			return caps.GL_ARB_map_buffer_range;
+		}
+
+		@Override
+		public ByteBuffer mapBuffer(GlBufferType target, long offset, long length, int access) {
+			return ARBMapBufferRange.glMapBufferRange(target.glEnum, offset, length, access);
+		}
+	},
+	UNSUPPORTED {
+		@Override
+		public boolean supported(GLCapabilities caps) {
+			return true;
+		}
+
+		@Override
+		public ByteBuffer mapBuffer(GlBufferType target, long offset, long length, int access) {
+			throw new UnsupportedOperationException("glMapBuffer not supported");
+		}
+	};
+
+
+	public abstract ByteBuffer mapBuffer(GlBufferType target, long offset, long length, int access);
+}

src/main/java/com/jozufozu/flywheel/backend/instancing/InstanceData.java

@@ -1,6 +1,6 @@
 package com.jozufozu.flywheel.backend.instancing;
 
-import com.jozufozu.flywheel.backend.gl.MappedBuffer;
+import com.jozufozu.flywheel.backend.gl.buffer.MappedBuffer;
 
 public abstract class InstanceData {
 

src/main/java/com/jozufozu/flywheel/backend/instancing/InstancedModel.java

@@ -9,11 +9,11 @@ import org.lwjgl.opengl.GL11;
 import com.jozufozu.flywheel.backend.Backend;
 import com.jozufozu.flywheel.backend.BufferedModel;
 import com.jozufozu.flywheel.backend.core.materials.ModelAttributes;
-import com.jozufozu.flywheel.backend.gl.GlBuffer;
-import com.jozufozu.flywheel.backend.gl.GlBufferType;
 import com.jozufozu.flywheel.backend.gl.GlVertexArray;
-import com.jozufozu.flywheel.backend.gl.MappedBufferRange;
 import com.jozufozu.flywheel.backend.gl.attrib.VertexFormat;
+import com.jozufozu.flywheel.backend.gl.buffer.GlBuffer;
+import com.jozufozu.flywheel.backend.gl.buffer.GlBufferType;
+import com.jozufozu.flywheel.backend.gl.buffer.MappedBuffer;
 
 import net.minecraft.client.renderer.BufferBuilder;
 
@@ -128,9 +128,9 @@ public abstract class InstancedModel<D extends InstanceData> extends BufferedMod
 		final int offset = size * getInstanceFormat().getStride();
 		final int length = glBufferSize - offset;
 		if (length > 0) {
-			MappedBufferRange buffer = instanceVBO.getBuffer(offset, length);
+			MappedBuffer buffer = instanceVBO.getBuffer(offset, length);
 			buffer.putByteArray(new byte[length]);
-			buffer.unmap();
+			buffer.flush();
 		}
 	}
 
@@ -151,14 +151,15 @@ public abstract class InstancedModel<D extends InstanceData> extends BufferedMod
 		final int length = (1 + lastDirty - firstDirty) * stride;
 
 		if (length > 0) {
-			MappedBufferRange mapped = instanceVBO.getBuffer(offset, length);
+			MappedBuffer mapped = instanceVBO.getBuffer(offset, length);
+
 			dirtySet.stream().forEach(i -> {
 				final D d = data.get(i);
 
-				mapped.position(i * stride - offset);
+				mapped.position(i * stride);
 				d.write(mapped);
 			});
-			mapped.unmap();
+			mapped.flush();
 		}
 	}
 
@@ -185,11 +186,11 @@ public abstract class InstancedModel<D extends InstanceData> extends BufferedMod
 			glBufferSize = requiredSize + stride * 16;
 			instanceVBO.alloc(glBufferSize);
 
-			MappedBufferRange buffer = instanceVBO.getBuffer(0, glBufferSize);
+			MappedBuffer buffer = instanceVBO.getBuffer(0, glBufferSize);
 			for (D datum : data) {
 				datum.write(buffer);
 			}
-			buffer.unmap();
+			buffer.flush();
 
 			glInstanceCount = size;
 			return true;
@@ -232,7 +233,7 @@ public abstract class InstancedModel<D extends InstanceData> extends BufferedMod
 	}
 
 	@Override
-	protected void copyVertex(MappedBufferRange constant, int i) {
+	protected void copyVertex(MappedBuffer constant, int i) {
 		constant.putFloat(getX(template, i));
 		constant.putFloat(getY(template, i));
 		constant.putFloat(getZ(template, i));

src/main/java/com/simibubi/create/content/contraptions/base/KineticData.java

@@ -1,7 +1,7 @@
 package com.simibubi.create.content.contraptions.base;
 
 import com.jozufozu.flywheel.backend.core.materials.BasicData;
-import com.jozufozu.flywheel.backend.gl.MappedBuffer;
+import com.jozufozu.flywheel.backend.gl.buffer.MappedBuffer;
 import com.jozufozu.flywheel.backend.instancing.InstancedModel;
 import com.simibubi.create.foundation.utility.ColorHelper;
 

src/main/java/com/simibubi/create/content/contraptions/base/RotatingData.java

@@ -1,6 +1,6 @@
 package com.simibubi.create.content.contraptions.base;
 
-import com.jozufozu.flywheel.backend.gl.MappedBuffer;
+import com.jozufozu.flywheel.backend.gl.buffer.MappedBuffer;
 import com.jozufozu.flywheel.backend.instancing.InstancedModel;
 
 import net.minecraft.util.Direction;

src/main/java/com/simibubi/create/content/contraptions/components/actors/ActorData.java

@@ -1,6 +1,6 @@
 package com.simibubi.create.content.contraptions.components.actors;
 
-import com.jozufozu.flywheel.backend.gl.MappedBuffer;
+import com.jozufozu.flywheel.backend.gl.buffer.MappedBuffer;
 import com.jozufozu.flywheel.backend.instancing.InstanceData;
 import com.jozufozu.flywheel.backend.instancing.InstancedModel;
 

src/main/java/com/simibubi/create/content/contraptions/components/structureMovement/render/ContraptionModel.java

@@ -3,11 +3,11 @@ package com.simibubi.create.content.contraptions.components.structureMovement.re
 import org.lwjgl.opengl.GL20;
 
 import com.jozufozu.flywheel.backend.BufferedModel;
-import com.jozufozu.flywheel.backend.gl.GlBuffer;
-import com.jozufozu.flywheel.backend.gl.GlBufferType;
 import com.jozufozu.flywheel.backend.gl.GlPrimitiveType;
-import com.jozufozu.flywheel.backend.gl.MappedBufferRange;
 import com.jozufozu.flywheel.backend.gl.attrib.VertexFormat;
+import com.jozufozu.flywheel.backend.gl.buffer.GlBuffer;
+import com.jozufozu.flywheel.backend.gl.buffer.GlBufferType;
+import com.jozufozu.flywheel.backend.gl.buffer.MappedBuffer;
 
 import net.minecraft.client.renderer.BufferBuilder;
 import net.minecraft.client.renderer.LightTexture;
@@ -57,17 +57,17 @@ public class ContraptionModel extends BufferedModel {
 		ebo.bind();
 
 		ebo.alloc(indicesSize);
-		MappedBufferRange indices = ebo.getBuffer(0, indicesSize);
+		MappedBuffer indices = ebo.getBuffer(0, indicesSize);
 		for (int i = 0; i < vertexCount; i++) {
 			indices.putInt(i);
 		}
-		indices.unmap();
+		indices.flush();
 
 		ebo.unbind();
 	}
 
 	@Override
-	protected void copyVertex(MappedBufferRange to, int vertex) {
+	protected void copyVertex(MappedBuffer to, int vertex) {
 		to.putFloat(getX(template, vertex));
 		to.putFloat(getY(template, vertex));
 		to.putFloat(getZ(template, vertex));

src/main/java/com/simibubi/create/content/contraptions/relays/belt/BeltData.java

@@ -1,6 +1,6 @@
 package com.simibubi.create.content.contraptions.relays.belt;
 
-import com.jozufozu.flywheel.backend.gl.MappedBuffer;
+import com.jozufozu.flywheel.backend.gl.buffer.MappedBuffer;
 import com.jozufozu.flywheel.backend.instancing.InstancedModel;
 import com.simibubi.create.content.contraptions.base.KineticData;
 import com.simibubi.create.foundation.block.render.SpriteShiftEntry;

src/main/java/com/simibubi/create/content/logistics/block/FlapData.java

@@ -1,7 +1,7 @@
 package com.simibubi.create.content.logistics.block;
 
 import com.jozufozu.flywheel.backend.core.materials.IFlatLight;
-import com.jozufozu.flywheel.backend.gl.MappedBuffer;
+import com.jozufozu.flywheel.backend.gl.buffer.MappedBuffer;
 import com.jozufozu.flywheel.backend.instancing.InstanceData;
 import com.jozufozu.flywheel.backend.instancing.InstancedModel;
 

src/main/java/com/simibubi/create/foundation/render/effects/EffectsHandler.java

@@ -9,11 +9,11 @@ import org.lwjgl.opengl.GL20;
 import org.lwjgl.opengl.GL30;
 
 import com.jozufozu.flywheel.backend.Backend;
-import com.jozufozu.flywheel.backend.gl.GlBuffer;
-import com.jozufozu.flywheel.backend.gl.GlBufferType;
 import com.jozufozu.flywheel.backend.gl.GlPrimitiveType;
 import com.jozufozu.flywheel.backend.gl.GlVertexArray;
-import com.jozufozu.flywheel.backend.gl.MappedBufferRange;
+import com.jozufozu.flywheel.backend.gl.buffer.GlBuffer;
+import com.jozufozu.flywheel.backend.gl.buffer.GlBufferType;
+import com.jozufozu.flywheel.backend.gl.buffer.MappedBuffer;
 import com.jozufozu.flywheel.util.RenderUtil;
 import com.simibubi.create.foundation.render.AllProgramSpecs;
 import com.simibubi.create.foundation.utility.AnimationTickHolder;
@@ -81,9 +81,9 @@ public class EffectsHandler {
 
 		vbo.bind();
 		vbo.alloc(bufferSize);
-		MappedBufferRange buffer = vbo.getBuffer(0, bufferSize);
+		MappedBuffer buffer = vbo.getBuffer(0, bufferSize);
 		buffer.putFloatArray(vertices);
-		buffer.unmap();
+		buffer.flush();
 
 		vao.bind();
 

src/main/java/com/simibubi/create/foundation/render/effects/FilterSphere.java

@@ -1,6 +1,6 @@
 package com.simibubi.create.foundation.render.effects;
 
-import com.jozufozu.flywheel.backend.gl.MappedBuffer;
+import com.jozufozu.flywheel.backend.gl.buffer.MappedBuffer;
 import com.jozufozu.flywheel.util.RenderUtil;
 
 import net.minecraft.util.math.vector.Matrix4f;

src/main/java/com/simibubi/create/foundation/render/effects/SphereFilterProgram.java

@@ -5,9 +5,9 @@ import java.util.ArrayList;
 import org.lwjgl.opengl.GL20;
 import org.lwjgl.opengl.GL31;
 
-import com.jozufozu.flywheel.backend.gl.GlBuffer;
-import com.jozufozu.flywheel.backend.gl.GlBufferType;
-import com.jozufozu.flywheel.backend.gl.MappedBufferRange;
+import com.jozufozu.flywheel.backend.gl.buffer.GlBuffer;
+import com.jozufozu.flywheel.backend.gl.buffer.GlBufferType;
+import com.jozufozu.flywheel.backend.gl.buffer.MappedBuffer;
 import com.jozufozu.flywheel.backend.gl.shader.GlProgram;
 
 import net.minecraft.util.ResourceLocation;
@@ -81,13 +81,13 @@ public class SphereFilterProgram extends GlProgram {
 
 	public void uploadFilters(ArrayList<FilterSphere> filters) {
 		effectsUBO.bind(GlBufferType.ARRAY_BUFFER);
-		MappedBufferRange buffer = effectsUBO.getBuffer(0, BUFFER_SIZE);
+		MappedBuffer buffer = effectsUBO.getBuffer(0, BUFFER_SIZE);
 		buffer.putInt(filters.size())
 				.position(16);
 
 		filters.forEach(it -> it.write(buffer));
 
-		buffer.unmap();
+		buffer.flush();
 
 		effectsUBO.unbind(GlBufferType.ARRAY_BUFFER);
 	}