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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "Texture.h"
#include "ipc/WebGPUChild.h"
#include "mozilla/webgpu/ffi/wgpu.h"
#include "mozilla/webgpu/CanvasContext.h"
#include "mozilla/dom/WebGPUBinding.h"
#include "mozilla/webgpu/WebGPUTypes.h"
#include "TextureView.h"
#include "Utility.h"
namespace mozilla::webgpu {
GPU_IMPL_CYCLE_COLLECTION(Texture, mParent)
GPU_IMPL_JS_WRAP(Texture)
static Maybe<uint8_t> GetBytesPerBlockSingleAspect(
dom::GPUTextureFormat aFormat) {
auto format = ConvertTextureFormat(aFormat);
uint32_t bytes = ffi::wgpu_texture_format_block_size_single_aspect(format);
if (bytes == 0) {
// The above function returns zero if the texture has multiple aspects like
// depth and stencil.
return Nothing();
}
return Some((uint8_t)bytes);
}
Texture::Texture(Device* const aParent, RawId aId,
const dom::GPUTextureDescriptor& aDesc)
: ChildOf(aParent),
mId(aId),
mFormat(aDesc.mFormat),
mBytesPerBlock(GetBytesPerBlockSingleAspect(aDesc.mFormat)),
mSize(ConvertExtent(aDesc.mSize)),
mMipLevelCount(aDesc.mMipLevelCount),
mSampleCount(aDesc.mSampleCount),
mDimension(aDesc.mDimension),
mUsage(aDesc.mUsage) {
MOZ_RELEASE_ASSERT(aId);
}
void Texture::Cleanup() {
if (!mParent) {
return;
}
auto bridge = mParent->GetBridge();
if (bridge && bridge->IsOpen()) {
bridge->SendTextureDrop(mId);
}
// After cleanup is called, no other method should ever be called on the
// object so we don't have to null-check mParent in other places.
// This serves the purpose of preventing SendTextureDrop from happening
// twice. TODO: Does it matter for breaking cycles too? Cleanup is called
// by the macros that deal with cycle colleciton.
mParent = nullptr;
}
Texture::~Texture() { Cleanup(); }
already_AddRefed<TextureView> Texture::CreateView(
const dom::GPUTextureViewDescriptor& aDesc) {
auto bridge = mParent->GetBridge();
ffi::WGPUTextureViewDescriptor desc = {};
webgpu::StringHelper label(aDesc.mLabel);
desc.label = label.Get();
ffi::WGPUTextureFormat format = {ffi::WGPUTextureFormat_Sentinel};
if (aDesc.mFormat.WasPassed()) {
format = ConvertTextureFormat(aDesc.mFormat.Value());
desc.format = &format;
}
ffi::WGPUTextureViewDimension dimension =
ffi::WGPUTextureViewDimension_Sentinel;
if (aDesc.mDimension.WasPassed()) {
dimension = ffi::WGPUTextureViewDimension(aDesc.mDimension.Value());
desc.dimension = &dimension;
}
// Ideally we'd just do something like "aDesc.mMipLevelCount.ptrOr(nullptr)"
// but dom::Optional does not seem to have very many nice things.
uint32_t mipCount =
aDesc.mMipLevelCount.WasPassed() ? aDesc.mMipLevelCount.Value() : 0;
uint32_t layerCount =
aDesc.mArrayLayerCount.WasPassed() ? aDesc.mArrayLayerCount.Value() : 0;
desc.aspect = ffi::WGPUTextureAspect(aDesc.mAspect);
desc.base_mip_level = aDesc.mBaseMipLevel;
desc.mip_level_count = aDesc.mMipLevelCount.WasPassed() ? &mipCount : nullptr;
desc.base_array_layer = aDesc.mBaseArrayLayer;
desc.array_layer_count =
aDesc.mArrayLayerCount.WasPassed() ? &layerCount : nullptr;
ipc::ByteBuf bb;
RawId id = ffi::wgpu_client_create_texture_view(bridge->GetClient(), mId,
&desc, ToFFI(&bb));
if (bridge->CanSend()) {
bridge->SendTextureAction(mId, mParent->mId, std::move(bb));
}
RefPtr<TextureView> view = new TextureView(this, id);
return view.forget();
}
void Texture::Destroy() {
auto bridge = mParent->GetBridge();
if (bridge && bridge->IsOpen()) {
bridge->SendTextureDestroy(mId, mParent->GetId());
}
}
} // namespace mozilla::webgpu
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