chromium/third_party/skia/src/gpu/ganesh/GrVertexChunkArray.h

/*
 * Copyright 2021 Google LLC.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef GrVertexChunkArray_DEFINED
#define GrVertexChunkArray_DEFINED

#include "include/core/SkRefCnt.h"
#include "include/core/SkTypes.h"
#include "include/private/base/SkDebug.h"
#include "include/private/base/SkNoncopyable.h"
#include "include/private/base/SkTArray.h"
#include "include/private/base/SkTypeTraits.h"
#include "src/gpu/BufferWriter.h"
#include "src/gpu/ganesh/GrBuffer.h"

#include <cstddef>
#include <type_traits>
#include <utility>

class GrMeshDrawTarget;

// Represents a chunk of vertex data. Use with GrVertexChunkArray and GrVertexChunkBuilder. We write
// the data out in chunks when we don't start out knowing exactly how many vertices (or instances)
// we will end up writing.
struct GrVertexChunk { … };

// Represents an array of GrVertexChunks.
//
// We only preallocate 1 chunk because if the array needs to grow, then we're also allocating a
// brand new GPU buffer anyway.
using GrVertexChunkArray = skia_private::STArray<1, GrVertexChunk>;

// Builds a GrVertexChunkArray. The provided Target must not be used externally throughout the
// entire lifetime of this object.
class GrVertexChunkBuilder : SkNoncopyable { … };

#endif