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render_pass_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_RENDER_PASS_MTL_H_
6 #define FLUTTER_IMPELLER_RENDERER_BACKEND_METAL_RENDER_PASS_MTL_H_
7
8 #include <Metal/Metal.h>
9
10 #include "impeller/renderer/backend/metal/pass_bindings_cache_mtl.h"
11 #include "impeller/renderer/render_pass.h"
12 #include "impeller/renderer/render_target.h"
13
14 namespace impeller {
15
16 class RenderPassMTL final : public RenderPass {
17 public:
18 // |RenderPass|
19 ~RenderPassMTL() override;
20
21 private:
22 friend class CommandBufferMTL;
23
24 id<MTLCommandBuffer> buffer_ = nil;
25 id<MTLRenderCommandEncoder> encoder_ = nil;
26 MTLRenderPassDescriptor* desc_ = nil;
27 std::string label_;
28 bool is_metal_trace_active_ = false;
29 bool is_valid_ = false;
30 // Many parts of the codebase will start writing to a render pass but
31 // never submit them. This boolean is used to track if a submit happened
32 // so that in the dtor we can always ensure the render pass is finished.
33 mutable bool did_finish_encoding_ = false;
34
35 PassBindingsCacheMTL pass_bindings_;
36
37 // Per-command state
38 size_t instance_count_ = 1u;
39 size_t base_vertex_ = 0u;
40 size_t vertex_count_ = 0u;
41 bool has_valid_pipeline_ = false;
42 bool has_label_ = false;
43 BufferView index_buffer_ = {};
44 PrimitiveType primitive_type_ = {};
45 MTLIndexType index_type_ = {};
46
47 RenderPassMTL(std::shared_ptr<const Context> context,
48 const RenderTarget& target,
49 id<MTLCommandBuffer> buffer);
50
51 // |RenderPass|
52 void ReserveCommands(size_t command_count) override {}
53
54 // |RenderPass|
55 bool IsValid() const override;
56
57 // |RenderPass|
58 void OnSetLabel(std::string label) override;
59
60 // |RenderPass|
61 bool OnEncodeCommands(const Context& context) const override;
62
63 // |RenderPass|
64 void SetPipeline(
65 const std::shared_ptr<Pipeline<PipelineDescriptor>>& pipeline) override;
66
67 // |RenderPass|
68 void SetCommandLabel(std::string_view label) override;
69
70 // |RenderPass|
71 void SetStencilReference(uint32_t value) override;
72
73 // |RenderPass|
74 void SetBaseVertex(uint64_t value) override;
75
76 // |RenderPass|
77 void SetViewport(Viewport viewport) override;
78
79 // |RenderPass|
80 void SetScissor(IRect scissor) override;
81
82 // |RenderPass|
83 void SetInstanceCount(size_t count) override;
84
85 // |RenderPass|
86 bool SetVertexBuffer(VertexBuffer buffer) override;
87
88 // |RenderPass|
89 fml::Status Draw() override;
90
91 // |RenderPass|
92 bool BindResource(ShaderStage stage,
93 DescriptorType type,
94 const ShaderUniformSlot& slot,
95 const ShaderMetadata& metadata,
96 BufferView view) override;
97
98 // |RenderPass|
99 bool BindResource(ShaderStage stage,
100 DescriptorType type,
101 const ShaderUniformSlot& slot,
102 const std::shared_ptr<const ShaderMetadata>& metadata,
103 BufferView view) override;
104
105 // |RenderPass|
106 bool BindResource(ShaderStage stage,
107 DescriptorType type,
108 const SampledImageSlot& slot,
109 const ShaderMetadata& metadata,
110 std::shared_ptr<const Texture> texture,
111 const std::unique_ptr<const Sampler>& sampler) override;
112
113 RenderPassMTL(const RenderPassMTL&) = delete;
114
115 RenderPassMTL& operator=(const RenderPassMTL&) = delete;
116 };
117
118 } // namespace impeller
119
120 #endif // FLUTTER_IMPELLER_RENDERER_BACKEND_METAL_RENDER_PASS_MTL_H_
impeller::ShaderStage
ShaderStage
Definition: shader_types.h:22
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::PrimitiveType
PrimitiveType
Decides how backend draws pixels based on input vertices.
Definition: formats.h:352
render_pass.h
impeller::RenderPassMTL::~RenderPassMTL
~RenderPassMTL() override
Definition: render_pass_mtl.mm:162
type
GLenum type
Definition: blit_command_gles.cc:127
pass_bindings_cache_mtl.h
impeller::CommandBufferMTL
Definition: command_buffer_mtl.h:15
impeller::RenderPass
Render passes encode render commands directed as one specific render target into an underlying comman...
Definition: render_pass.h:33
impeller::BufferView
Definition: buffer_view.h:15
impeller::IRect
IRect64 IRect
Definition: rect.h:779
render_target.h
impeller::RenderPassMTL
Definition: render_pass_mtl.h:16
impeller
Definition: allocation.cc:12
impeller::DescriptorType
DescriptorType
Definition: shader_types.h:156