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/*
* Copyright 2023 Google LLC
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "src/gpu/ganesh/GrMeshBuffers.h"
#include "include/core/SkData.h"
#include "include/core/SkMesh.h"
#include "include/gpu/GrDirectContext.h"
#include "include/gpu/ganesh/SkMeshGanesh.h"
#include "include/private/base/SkAssert.h"
#include "include/private/gpu/ganesh/GrTypesPriv.h"
#include "src/core/SkMeshPriv.h"
#include "src/gpu/ganesh/GrCaps.h"
#include "src/gpu/ganesh/GrDirectContextPriv.h"
#include "src/gpu/ganesh/GrDrawingManager.h"
#include "src/gpu/ganesh/GrGpu.h"
#include "src/gpu/ganesh/GrGpuBuffer.h"
#include "src/gpu/ganesh/GrResourceCache.h"
#include "src/gpu/ganesh/GrResourceProvider.h"
#include "src/gpu/ganesh/GrStagingBufferManager.h"
#include <cstring>
#include <utility>
template <typename Base, GrGpuBufferType Type> GrMeshBuffer<Base, Type>::~GrMeshBuffer() {
GrResourceCache::ReturnResourceFromThread(std::move(fBuffer), fContextID);
}
template <typename Base, GrGpuBufferType Type>
sk_sp<Base> GrMeshBuffer<Base, Type>::Make(GrDirectContext* dc, const void* data, size_t size) {
SkASSERT(dc);
sk_sp<GrGpuBuffer> buffer = dc->priv().resourceProvider()->createBuffer(
size,
Type,
kStatic_GrAccessPattern,
data ? GrResourceProvider::ZeroInit::kNo : GrResourceProvider::ZeroInit::kYes);
if (!buffer) {
return nullptr;
}
if (data && !buffer->updateData(data, 0, size, /*preserve=*/false)) {
return nullptr;
}
auto result = new GrMeshBuffer;
result->fBuffer = std::move(buffer);
result->fContextID = dc->directContextID();
return sk_sp<Base>(result);
}
template <typename Base, GrGpuBufferType Type>
bool GrMeshBuffer<Base, Type>::onUpdate(GrDirectContext* dc,
const void* data,
size_t offset,
size_t size) {
if (!dc || dc != fBuffer->getContext()) {
return false;
}
SkASSERT(!dc->abandoned()); // If dc is abandoned then fBuffer->getContext() should be null.
if (!dc->priv().caps()->transferFromBufferToBufferSupport()) {
auto ownedData = SkData::MakeWithCopy(data, size);
dc->priv().drawingManager()->newBufferUpdateTask(
std::move(ownedData), fBuffer, offset);
return true;
}
sk_sp<GrGpuBuffer> tempBuffer;
size_t tempOffset = 0;
if (auto* sbm = dc->priv().getGpu()->stagingBufferManager()) {
auto alignment = dc->priv().caps()->transferFromBufferToBufferAlignment();
auto [sliceBuffer, sliceOffset, ptr] = sbm->allocateStagingBufferSlice(size, alignment);
if (sliceBuffer) {
std::memcpy(ptr, data, size);
tempBuffer.reset(SkRef(sliceBuffer));
tempOffset = sliceOffset;
}
}
if (!tempBuffer) {
tempBuffer = dc->priv().resourceProvider()->createBuffer(size,
GrGpuBufferType::kXferCpuToGpu,
kDynamic_GrAccessPattern,
GrResourceProvider::ZeroInit::kNo);
if (!tempBuffer) {
return false;
}
if (!tempBuffer->updateData(data, 0, size, /*preserve=*/false)) {
return false;
}
}
dc->priv().drawingManager()->newBufferTransferTask(
std::move(tempBuffer), tempOffset, fBuffer, offset, size);
return true;
}
namespace SkMeshes {
sk_sp<SkMesh::IndexBuffer> MakeIndexBuffer(GrDirectContext* dc, const void* data, size_t size) {
if (!dc) {
// Fallback to a CPU buffer.
return MakeIndexBuffer(data, size);
}
return SkMeshPriv::GaneshIndexBuffer::Make(dc, data, size);
}
sk_sp<SkMesh::IndexBuffer> CopyIndexBuffer(GrDirectContext* dc, sk_sp<SkMesh::IndexBuffer> src) {
if (!src) {
return nullptr;
}
auto* ib = static_cast<SkMeshPriv::IB*>(src.get());
const void* data = ib->peek();
if (!data) {
return nullptr;
}
if (!dc) {
return MakeIndexBuffer(data, ib->size());
}
return MakeIndexBuffer(dc, data, ib->size());
}
sk_sp<SkMesh::VertexBuffer> MakeVertexBuffer(GrDirectContext* dc, const void* data, size_t size) {
if (!dc) {
return MakeVertexBuffer(data, size);
}
return SkMeshPriv::GaneshVertexBuffer::Make(dc, data, size);
}
sk_sp<SkMesh::VertexBuffer> CopyVertexBuffer(GrDirectContext* dc, sk_sp<SkMesh::VertexBuffer> src) {
if (!src) {
return nullptr;
}
auto* vb = static_cast<SkMeshPriv::VB*>(src.get());
const void* data = vb->peek();
if (!data) {
return nullptr;
}
if (!dc) {
return MakeVertexBuffer(data, vb->size());
}
return MakeVertexBuffer(dc, data, vb->size());
}
} // namespace SkMeshes
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