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pass_bindings_cache_mtl.h
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1 // Copyright 2013 The Flutter Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef FLUTTER_IMPELLER_RENDERER_BACKEND_METAL_PASS_BINDINGS_CACHE_MTL_H_
6 #define FLUTTER_IMPELLER_RENDERER_BACKEND_METAL_PASS_BINDINGS_CACHE_MTL_H_
7
8 #include <Metal/Metal.h>
9
10 #include "impeller/renderer/render_pass.h"
11 #include "impeller/renderer/render_target.h"
12
13 namespace impeller {
14
15 //-----------------------------------------------------------------------------
16 /// @brief Ensures that bindings on the pass are not redundantly set or
17 /// updated. Avoids making the driver do additional checks and makes
18 /// the frame insights during profiling and instrumentation not
19 /// complain about the same.
20 ///
21 /// There should be no change to rendering if this caching was
22 /// absent.
23 ///
24 struct PassBindingsCacheMTL {
25 explicit PassBindingsCacheMTL() {}
26
27 ~PassBindingsCacheMTL() = default;
28
29 PassBindingsCacheMTL(const PassBindingsCacheMTL&) = delete;
30
31 PassBindingsCacheMTL(PassBindingsCacheMTL&&) = delete;
32
33 void SetEncoder(id<MTLRenderCommandEncoder> encoder);
34
35 void SetRenderPipelineState(id<MTLRenderPipelineState> pipeline);
36
37 void SetDepthStencilState(id<MTLDepthStencilState> depth_stencil);
38
39 bool SetBuffer(ShaderStage stage,
40 uint64_t index,
41 uint64_t offset,
42 id<MTLBuffer> buffer);
43
44 bool SetTexture(ShaderStage stage, uint64_t index, id<MTLTexture> texture);
45
46 bool SetSampler(ShaderStage stage,
47 uint64_t index,
48 id<MTLSamplerState> sampler);
49
50 void SetViewport(const Viewport& viewport);
51
52 void SetScissor(const IRect& scissor);
53
54 private:
55 struct BufferOffsetPair {
56 id<MTLBuffer> buffer = nullptr;
57 size_t offset = 0u;
58 };
59 using BufferMap = std::map<uint64_t, BufferOffsetPair>;
60 using TextureMap = std::map<uint64_t, id<MTLTexture>>;
61 using SamplerMap = std::map<uint64_t, id<MTLSamplerState>>;
62
63 id<MTLRenderCommandEncoder> encoder_;
64 id<MTLRenderPipelineState> pipeline_ = nullptr;
65 id<MTLDepthStencilState> depth_stencil_ = nullptr;
66 std::map<ShaderStage, BufferMap> buffers_;
67 std::map<ShaderStage, TextureMap> textures_;
68 std::map<ShaderStage, SamplerMap> samplers_;
69 std::optional<Viewport> viewport_;
70 std::optional<IRect> scissor_;
71 };
72
73 } // namespace impeller
74
75 #endif // FLUTTER_IMPELLER_RENDERER_BACKEND_METAL_PASS_BINDINGS_CACHE_MTL_H_
impeller
Definition: allocation.cc:12
impeller::ShaderStage
ShaderStage
Definition: shader_types.h:22
render_pass.h
render_target.h
offset
SeparatedVector2 offset
Definition: stroke_path_geometry.cc:319
impeller::PassBindingsCacheMTL
Ensures that bindings on the pass are not redundantly set or updated. Avoids making the driver do add...
Definition: pass_bindings_cache_mtl.h:24
impeller::PassBindingsCacheMTL::PassBindingsCacheMTL
PassBindingsCacheMTL(const PassBindingsCacheMTL &)=delete
impeller::PassBindingsCacheMTL::SetScissor
void SetScissor(const IRect &scissor)
Definition: pass_bindings_cache_mtl.mm:138
impeller::PassBindingsCacheMTL::~PassBindingsCacheMTL
~PassBindingsCacheMTL()=default
impeller::PassBindingsCacheMTL::SetRenderPipelineState
void SetRenderPipelineState(id< MTLRenderPipelineState > pipeline)
Definition: pass_bindings_cache_mtl.mm:13
impeller::PassBindingsCacheMTL::SetSampler
bool SetSampler(ShaderStage stage, uint64_t index, id< MTLSamplerState > sampler)
Definition: pass_bindings_cache_mtl.mm:99
impeller::PassBindingsCacheMTL::SetBuffer
bool SetBuffer(ShaderStage stage, uint64_t index, uint64_t offset, id< MTLBuffer > buffer)
Definition: pass_bindings_cache_mtl.mm:31
impeller::PassBindingsCacheMTL::SetViewport
void SetViewport(const Viewport &viewport)
Definition: pass_bindings_cache_mtl.mm:123
impeller::PassBindingsCacheMTL::SetDepthStencilState
void SetDepthStencilState(id< MTLDepthStencilState > depth_stencil)
Definition: pass_bindings_cache_mtl.mm:22
impeller::PassBindingsCacheMTL::SetEncoder
void SetEncoder(id< MTLRenderCommandEncoder > encoder)
Definition: pass_bindings_cache_mtl.mm:9
impeller::PassBindingsCacheMTL::SetTexture
bool SetTexture(ShaderStage stage, uint64_t index, id< MTLTexture > texture)
Definition: pass_bindings_cache_mtl.mm:75
impeller::PassBindingsCacheMTL::PassBindingsCacheMTL
PassBindingsCacheMTL(PassBindingsCacheMTL &&)=delete
impeller::PassBindingsCacheMTL::PassBindingsCacheMTL
PassBindingsCacheMTL()
Definition: pass_bindings_cache_mtl.h:25
impeller::TRect
Definition: rect.h:122
impeller::Viewport
Definition: formats.h:403