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[Impeller] playground upload to device private on macOS #41001

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Apr 10, 2023
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[Impeller] playground upload to device private on macOS #41001

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6108dd8
[Impeller] playground upload to device private on macOS
Apr 7, 2023
bced3ef
Fix enable_mipmapping
Apr 7, 2023
831d921
Merge branch 'main' into fix_load_texture_for_desktop_mac
Apr 10, 2023
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49 changes: 49 additions & 0 deletions impeller/playground/playground.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -400,6 +400,54 @@ std::shared_ptr<Texture> CreateTextureForDecompressedImage(
const std::shared_ptr<Context>& context,
DecompressedImage& decompressed_image,
bool enable_mipmapping) {
// TODO(https://github.com/flutter/flutter/issues/123468): copying buffers to
// textures is not implemented for GLES/Vulkan.
Comment on lines +403 to +404
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@gaaclarke gaaclarke Apr 7, 2023

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The comment doesn't seem to align with the #if. The if blocks a platform, the comment talks about backends.

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@jonahwilliams jonahwilliams Apr 7, 2023

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we don't have an ifdef for metal as far as I know. Technically macOS is only metal, except that we can run vulkan locally so this change breaks that without a modification to this code.

We can also fix this by finishing the blit pass implementation and removing the check altogether.

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@jonahwilliams jonahwilliams Apr 7, 2023

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Looks like this did break something, but hard to tell from CI logs.

#if FML_OS_MACOSX
impeller::TextureDescriptor texture_descriptor;
texture_descriptor.storage_mode = impeller::StorageMode::kDevicePrivate;
texture_descriptor.format = PixelFormat::kR8G8B8A8UNormInt;
texture_descriptor.size = decompressed_image.GetSize();
texture_descriptor.mip_count =
enable_mipmapping ? decompressed_image.GetSize().MipCount() : 1u;

auto dest_texture =
context->GetResourceAllocator()->CreateTexture(texture_descriptor);
if (!dest_texture) {
FML_DLOG(ERROR) << "Could not create Impeller texture.";
return nullptr;
}

auto buffer = context->GetResourceAllocator()->CreateBufferWithCopy(
*decompressed_image.GetAllocation().get());

dest_texture->SetLabel(
impeller::SPrintF("ui.Image(%p)", dest_texture.get()).c_str());

auto command_buffer = context->CreateCommandBuffer();
if (!command_buffer) {
FML_DLOG(ERROR) << "Could not create command buffer for mipmap generation.";
return nullptr;
}
command_buffer->SetLabel("Mipmap Command Buffer");

auto blit_pass = command_buffer->CreateBlitPass();
if (!blit_pass) {
FML_DLOG(ERROR) << "Could not create blit pass for mipmap generation.";
return nullptr;
}
blit_pass->SetLabel("Mipmap Blit Pass");
blit_pass->AddCopy(buffer->AsBufferView(), dest_texture);
if (enable_mipmapping) {
blit_pass->GenerateMipmap(dest_texture);
}

blit_pass->EncodeCommands(context->GetResourceAllocator());
if (!command_buffer->SubmitCommands()) {
FML_DLOG(ERROR) << "Failed to submit blit pass command buffer.";
return nullptr;
}
return dest_texture;
#else
auto texture_descriptor = TextureDescriptor{};
texture_descriptor.storage_mode = StorageMode::kHostVisible;
texture_descriptor.format = PixelFormat::kR8G8B8A8UNormInt;
Expand All @@ -420,6 +468,7 @@ std::shared_ptr<Texture> CreateTextureForDecompressedImage(
return nullptr;
}
return texture;
#endif // FML_OS_MACOS
}
} // namespace

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