| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "flutter/testing/test_metal_surface_impl.h" |
| |
| #include <Metal/Metal.h> |
| |
| #include "flutter/fml/logging.h" |
| #include "flutter/fml/platform/darwin/scoped_nsobject.h" |
| #include "flutter/testing/test_metal_context.h" |
| #include "third_party/skia/include/core/SkCanvas.h" |
| #include "third_party/skia/include/core/SkSurface.h" |
| |
| namespace flutter { |
| |
| void TestMetalSurfaceImpl::Init(const TestMetalContext::TextureInfo& texture_info, |
| const SkISize& surface_size) { |
| auto texture_descriptor = fml::scoped_nsobject{ |
| [[MTLTextureDescriptor texture2DDescriptorWithPixelFormat:MTLPixelFormatBGRA8Unorm |
| width:surface_size.width() |
| height:surface_size.height() |
| mipmapped:NO] retain]}; |
| |
| // The most pessimistic option and disables all optimizations but allows tests |
| // the most flexible access to the surface. They may read and write to the |
| // surface from shaders or use as a pixel view. |
| texture_descriptor.get().usage = MTLTextureUsageUnknown; |
| |
| if (!texture_descriptor) { |
| FML_LOG(ERROR) << "Invalid texture descriptor."; |
| return; |
| } |
| |
| id<MTLTexture> texture = (__bridge id<MTLTexture>)texture_info.texture; |
| |
| GrMtlTextureInfo skia_texture_info; |
| skia_texture_info.fTexture.reset([texture retain]); |
| GrBackendTexture backend_texture(surface_size.width(), surface_size.height(), GrMipmapped::kNo, |
| skia_texture_info); |
| |
| sk_sp<SkSurface> surface = SkSurface::MakeFromBackendTexture( |
| test_metal_context_.GetSkiaContext().get(), backend_texture, kTopLeft_GrSurfaceOrigin, 1, |
| kBGRA_8888_SkColorType, nullptr, nullptr); |
| |
| if (!surface) { |
| FML_LOG(ERROR) << "Could not create Skia surface from a Metal texture."; |
| return; |
| } |
| |
| surface_ = std::move(surface); |
| texture_info_ = std::move(texture_info); |
| is_valid_ = true; |
| } |
| |
| TestMetalSurfaceImpl::TestMetalSurfaceImpl(const TestMetalContext& test_metal_context, |
| int64_t texture_id, |
| const SkISize& surface_size) |
| : test_metal_context_(test_metal_context) { |
| TestMetalContext::TextureInfo texture_info = |
| const_cast<TestMetalContext&>(test_metal_context_).GetTextureInfo(texture_id); |
| Init(texture_info, surface_size); |
| } |
| |
| TestMetalSurfaceImpl::TestMetalSurfaceImpl(const TestMetalContext& test_metal_context, |
| const SkISize& surface_size) |
| : test_metal_context_(test_metal_context) { |
| if (surface_size.isEmpty()) { |
| FML_LOG(ERROR) << "Size of test Metal surface was empty."; |
| return; |
| } |
| TestMetalContext::TextureInfo texture_info = |
| const_cast<TestMetalContext&>(test_metal_context_).CreateMetalTexture(surface_size); |
| Init(texture_info, surface_size); |
| } |
| |
| sk_sp<SkImage> TestMetalSurfaceImpl::GetRasterSurfaceSnapshot() { |
| if (!IsValid()) { |
| return nullptr; |
| } |
| |
| if (!surface_) { |
| FML_LOG(ERROR) << "Aborting snapshot because of on-screen surface " |
| "acquisition failure."; |
| return nullptr; |
| } |
| |
| auto device_snapshot = surface_->makeImageSnapshot(); |
| |
| if (!device_snapshot) { |
| FML_LOG(ERROR) << "Could not create the device snapshot while attempting " |
| "to snapshot the Metal surface."; |
| return nullptr; |
| } |
| |
| auto host_snapshot = device_snapshot->makeRasterImage(); |
| |
| if (!host_snapshot) { |
| FML_LOG(ERROR) << "Could not create the host snapshot while attempting to " |
| "snapshot the Metal surface."; |
| return nullptr; |
| } |
| |
| return host_snapshot; |
| } |
| |
| // |TestMetalSurface| |
| TestMetalSurfaceImpl::~TestMetalSurfaceImpl() = default; |
| |
| // |TestMetalSurface| |
| bool TestMetalSurfaceImpl::IsValid() const { |
| return is_valid_; |
| } |
| |
| // |TestMetalSurface| |
| sk_sp<GrDirectContext> TestMetalSurfaceImpl::GetGrContext() const { |
| return IsValid() ? test_metal_context_.GetSkiaContext() : nullptr; |
| } |
| |
| // |TestMetalSurface| |
| sk_sp<SkSurface> TestMetalSurfaceImpl::GetSurface() const { |
| return IsValid() ? surface_ : nullptr; |
| } |
| |
| // |TestMetalSurface| |
| TestMetalContext::TextureInfo TestMetalSurfaceImpl::GetTextureInfo() { |
| return IsValid() ? texture_info_ : TestMetalContext::TextureInfo(); |
| } |
| |
| } // namespace flutter |