blob: ba10415eafd4d39943a079942f481d401aa046d7 [file] [log] [blame]
* Copyright 2022 Google LLC.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef skgpu_piet_Renderer_DEFINED
#define skgpu_piet_Renderer_DEFINED
#include "src/gpu/piet/PietTypes.h"
#include <memory>
#if defined(SK_METAL) && defined(__OBJC__)
#import <Metal/Metal.h>
* Renderer provides the piet library interface for encoding compute dispatches to render a
* skgpu::piet::Scene to a target texture. The Renderer template is meant to be specialized to
* directly depend on graphics backend types and acts as the glue between a GPU backend and the
* pgpu-render library.
* For instance, the `MtlRenderer` specialization operates directly on Metal framework types and
* this header file can be included directly in an Obj-C++ program.
namespace skgpu::piet {
class Scene;
class RendererBase : public Object<PgpuRenderer, pgpu_renderer_destroy> {
RendererBase(void* device, void* queue);
~RendererBase() override = default;
void render(const Scene& scene, void* target, void* cmdBuffer) const;
RendererBase(const RendererBase&) = delete;
RendererBase(RendererBase&&) = delete;
template <typename BackendTraits> class Renderer final : public RendererBase {
using Device = typename BackendTraits::Device;
using CommandQueue = typename BackendTraits::CommandQueue;
using CommandBuffer = typename BackendTraits::CommandBuffer;
using Texture = typename BackendTraits::Texture;
Renderer(Device device, CommandQueue queue)
: RendererBase(static_cast<void*>(device), static_cast<void*>(queue)) {}
~Renderer() override = default;
void render(const Scene& scene, Texture target, CommandBuffer cmdBuffer) const {
RendererBase::render(scene, static_cast<void*>(target), static_cast<void*>(cmdBuffer));
#if defined(SK_METAL) && defined(__OBJC__)
// The MtlRenderer is inteded to be accessed by Obj-C code as it has a direct dependency on Metal
// framework objects.
struct MtlBackendTraits {
using Device = id<MTLDevice>;
using CommandQueue = id<MTLCommandQueue>;
using CommandBuffer = id<MTLCommandBuffer>;
using Texture = id<MTLTexture>;
using MtlRenderer = Renderer<MtlBackendTraits>;
#endif // defined(SK_METAL) && defined(__OBJC__)
} // namespace skgpu::piet
#endif // skgpu_piet_Renderer_DEFINED