ladybird/Libraries/LibGfx/MetalContext.mm

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/*
* Copyright (c) 2024, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/OwnPtr.h>
#include <LibGfx/MetalContext.h>
#import <Metal/Metal.h>
namespace Gfx {
class MetalTextureImpl final : public MetalTexture {
public:
MetalTextureImpl(id<MTLTexture> texture)
: m_texture(texture)
{
}
void const* texture() const override { return m_texture; }
size_t width() const override { return m_texture.width; }
size_t height() const override { return m_texture.height; }
virtual ~MetalTextureImpl()
{
[m_texture release];
}
private:
id<MTLTexture> m_texture;
};
class MetalContextImpl final : public MetalContext {
public:
MetalContextImpl(id<MTLDevice> device, id<MTLCommandQueue> queue)
: m_device(device)
, m_queue(queue)
{
}
void const* device() const override { return m_device; }
void const* queue() const override { return m_queue; }
OwnPtr<MetalTexture> create_texture_from_iosurface(Core::IOSurfaceHandle const& iosurface) override
{
auto* const descriptor = [[MTLTextureDescriptor alloc] init];
descriptor.pixelFormat = MTLPixelFormatBGRA8Unorm;
descriptor.width = iosurface.width();
descriptor.height = iosurface.height();
descriptor.storageMode = MTLStorageModeShared;
descriptor.usage = MTLTextureUsageRenderTarget | MTLTextureUsageShaderRead;
id<MTLTexture> texture = [m_device newTextureWithDescriptor:descriptor iosurface:(IOSurfaceRef)iosurface.core_foundation_pointer() plane:0];
[descriptor release];
return make<MetalTextureImpl>(texture);
}
virtual ~MetalContextImpl() override
{
[m_queue release];
[m_device release];
}
private:
id<MTLDevice> m_device;
id<MTLCommandQueue> m_queue;
};
OwnPtr<MetalContext> get_metal_context()
{
auto device = MTLCreateSystemDefaultDevice();
if (!device) {
dbgln("Failed to create Metal device");
return {};
}
auto queue = [device newCommandQueue];
if (!queue) {
dbgln("Failed to create Metal command queue");
[device release];
return {};
}
return make<MetalContextImpl>(device, queue);
}
}