MeshData.java
com.mojang.blaze3d.vertex.MeshData
信息
- 全限定名：com.mojang.blaze3d.vertex.MeshData
- 类型：public class
- 包：com.mojang.blaze3d.vertex
- 源码路径：src/main/java/com/mojang/blaze3d/vertex/MeshData.java
- 起始行号：L13
- 实现：AutoCloseable
- 职责：
TODO
字段/常量
-
vertexBuffer- 类型:
ByteBufferBuilder.Result - 修饰符:
private final - 源码定位:
L14 - 说明:
TODO
- 类型:
-
indexBuffer- 类型:
ByteBufferBuilder.Result - 修饰符:
private - 源码定位:
L15 - 说明:
TODO
- 类型:
-
drawState- 类型:
MeshData.DrawState - 修饰符:
private final - 源码定位:
L16 - 说明:
TODO
- 类型:
内部类/嵌套类型
-
com.mojang.blaze3d.vertex.MeshData.DrawState- 类型:
record - 修饰符:
public - 源码定位:
L85 - 说明:
TODO
- 类型:
-
com.mojang.blaze3d.vertex.MeshData.SortState- 类型:
record - 修饰符:
public - 源码定位:
L89 - 说明:
TODO
- 类型:
构造器
public MeshData(ByteBufferBuilder.Result vertexBuffer, MeshData.DrawState drawState) @ L18
- 构造器名：MeshData
- 源码定位：L18
- 修饰符：public
参数:
- vertexBuffer: ByteBufferBuilder.Result
- drawState: MeshData.DrawState
说明:
TODO
方法
下面的方法块按源码顺序生成。
private static CompactVectorArray unpackQuadCentroids(ByteBuffer vertexBuffer, int vertices, VertexFormat format) @ L23
- 方法名：unpackQuadCentroids
- 源码定位：L23
- 返回类型：CompactVectorArray
- 修饰符：private static
参数:
- vertexBuffer: ByteBuffer
- vertices: int
- format: VertexFormat
说明:
TODO
public ByteBuffer vertexBuffer() @ L53
- 方法名：vertexBuffer
- 源码定位：L53
- 返回类型：ByteBuffer
- 修饰符：public
参数:
- 无
说明:
TODO
public ByteBuffer indexBuffer() @ L57
- 方法名：indexBuffer
- 源码定位：L57
- 返回类型：ByteBuffer
- 修饰符：public
参数:
- 无
说明:
TODO
public MeshData.DrawState drawState() @ L61
- 方法名：drawState
- 源码定位：L61
- 返回类型：MeshData.DrawState
- 修饰符：public
参数:
- 无
说明:
TODO
public MeshData.SortState sortQuads(ByteBufferBuilder indexBufferTarget, VertexSorting sorting) @ L65
- 方法名：sortQuads
- 源码定位：L65
- 返回类型：MeshData.SortState
- 修饰符：public
参数:
- indexBufferTarget: ByteBufferBuilder
- sorting: VertexSorting
说明:
TODO
public void close() @ L76
- 方法名：close
- 源码定位：L76
- 返回类型：void
- 修饰符：public
参数:
- 无
说明:
TODO
代码
@OnlyIn(Dist.CLIENT)
public class MeshData implements AutoCloseable {
private final ByteBufferBuilder.Result vertexBuffer;
private ByteBufferBuilder.@Nullable Result indexBuffer;
private final MeshData.DrawState drawState;
public MeshData(ByteBufferBuilder.Result vertexBuffer, MeshData.DrawState drawState) {
this.vertexBuffer = vertexBuffer;
this.drawState = drawState;
}
private static CompactVectorArray unpackQuadCentroids(ByteBuffer vertexBuffer, int vertices, VertexFormat format) {
int positionOffset = format.getOffset(VertexFormatElement.POSITION);
if (positionOffset == -1) {
throw new IllegalArgumentException("Cannot identify quad centers with no position element");
} else {
FloatBuffer floatBuffer = vertexBuffer.asFloatBuffer();
int vertexStride = format.getVertexSize() / 4;
int quadStride = vertexStride * 4;
int quads = vertices / 4;
CompactVectorArray sortingPoints = new CompactVectorArray(quads);
for (int i = 0; i < quads; i++) {
int firstPosOffset = i * quadStride + positionOffset;
int secondPosOffset = firstPosOffset + vertexStride * 2;
float x0 = floatBuffer.get(firstPosOffset + 0);
float y0 = floatBuffer.get(firstPosOffset + 1);
float z0 = floatBuffer.get(firstPosOffset + 2);
float x1 = floatBuffer.get(secondPosOffset + 0);
float y1 = floatBuffer.get(secondPosOffset + 1);
float z1 = floatBuffer.get(secondPosOffset + 2);
float xMid = (x0 + x1) / 2.0F;
float yMid = (y0 + y1) / 2.0F;
float zMid = (z0 + z1) / 2.0F;
sortingPoints.set(i, xMid, yMid, zMid);
}
return sortingPoints;
}
}
public ByteBuffer vertexBuffer() {
return this.vertexBuffer.byteBuffer();
}
public @Nullable ByteBuffer indexBuffer() {
return this.indexBuffer != null ? this.indexBuffer.byteBuffer() : null;
}
public MeshData.DrawState drawState() {
return this.drawState;
}
public MeshData.@Nullable SortState sortQuads(ByteBufferBuilder indexBufferTarget, VertexSorting sorting) {
if (this.drawState.mode() != VertexFormat.Mode.QUADS) {
return null;
} else {
CompactVectorArray centroids = unpackQuadCentroids(this.vertexBuffer.byteBuffer(), this.drawState.vertexCount(), this.drawState.format());
MeshData.SortState sortState = new MeshData.SortState(centroids, this.drawState.indexType());
this.indexBuffer = sortState.buildSortedIndexBuffer(indexBufferTarget, sorting);
return sortState;
}
}
@Override
public void close() {
this.vertexBuffer.close();
if (this.indexBuffer != null) {
this.indexBuffer.close();
}
}
@OnlyIn(Dist.CLIENT)
public record DrawState(VertexFormat format, int vertexCount, int indexCount, VertexFormat.Mode mode, VertexFormat.IndexType indexType) {
}
@OnlyIn(Dist.CLIENT)
public record SortState(CompactVectorArray centroids, VertexFormat.IndexType indexType) {
public ByteBufferBuilder.@Nullable Result buildSortedIndexBuffer(ByteBufferBuilder target, VertexSorting sorting) {
int[] startIndices = sorting.sort(this.centroids);
long pointer = target.reserve(startIndices.length * 6 * this.indexType.bytes);
IntConsumer indexWriter = this.indexWriter(pointer, this.indexType);
for (int startIndex : startIndices) {
indexWriter.accept(startIndex * 4 + 0);
indexWriter.accept(startIndex * 4 + 1);
indexWriter.accept(startIndex * 4 + 2);
indexWriter.accept(startIndex * 4 + 2);
indexWriter.accept(startIndex * 4 + 3);
indexWriter.accept(startIndex * 4 + 0);
}
return target.build();
}
private IntConsumer indexWriter(long pointer, VertexFormat.IndexType indexType) {
MutableLong nextIndex = new MutableLong(pointer);
return switch (indexType) {
case SHORT -> value -> MemoryUtil.memPutShort(nextIndex.getAndAdd(2L), (short)value);
case INT -> value -> MemoryUtil.memPutInt(nextIndex.getAndAdd(4L), value);
};
}
}
}引用的其他类
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参数/字段
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构造调用/返回值 - 关联成员:
CompactVectorArray()
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参数
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参数
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