| Flutter Impeller |

surface_gles.cc
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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 #include "impeller/renderer/backend/gles/surface_gles.h"
6
7 #include "flutter/fml/trace_event.h"
8 #include "impeller/base/config.h"
9 #include "impeller/renderer/backend/gles/context_gles.h"
10 #include "impeller/renderer/backend/gles/texture_gles.h"
11
12 namespace impeller {
13
14 std::unique_ptr<Surface> SurfaceGLES::WrapFBO(
15 const std::shared_ptr<Context>& context,
16 SwapCallback swap_callback,
17 GLuint fbo,
18 PixelFormat color_format,
19 ISize fbo_size) {
20 TRACE_EVENT0("impeller", "SurfaceGLES::WrapOnScreenFBO");
21
22 if (context == nullptr || !context->IsValid() || !swap_callback) {
23 return nullptr;
24 }
25
26 const auto& gl_context = ContextGLES::Cast(*context);
27
28 TextureDescriptor color0_tex;
29 color0_tex.type = TextureType::kTexture2D;
30 color0_tex.format = color_format;
31 color0_tex.size = fbo_size;
32 color0_tex.usage = static_cast<TextureUsageMask>(TextureUsage::kRenderTarget);
33 color0_tex.sample_count = SampleCount::kCount1;
34 color0_tex.storage_mode = StorageMode::kDevicePrivate;
35
36 ColorAttachment color0;
37 color0.texture = std::make_shared<TextureGLES>(
38 gl_context.GetReactor(), color0_tex, TextureGLES::IsWrapped::kWrapped);
39 color0.clear_color = Color::DarkSlateGray();
40 color0.load_action = LoadAction::kClear;
41 color0.store_action = StoreAction::kStore;
42
43 TextureDescriptor stencil0_tex;
44 stencil0_tex.type = TextureType::kTexture2D;
45 stencil0_tex.format = color_format;
46 stencil0_tex.size = fbo_size;
47 stencil0_tex.usage =
48 static_cast<TextureUsageMask>(TextureUsage::kRenderTarget);
49 stencil0_tex.sample_count = SampleCount::kCount1;
50
51 StencilAttachment stencil0;
52 stencil0.clear_stencil = 0;
53 stencil0.texture = std::make_shared<TextureGLES>(
54 gl_context.GetReactor(), stencil0_tex, TextureGLES::IsWrapped::kWrapped);
55 stencil0.load_action = LoadAction::kClear;
56 stencil0.store_action = StoreAction::kDontCare;
57
58 RenderTarget render_target_desc;
59
60 render_target_desc.SetColorAttachment(color0, 0u);
61 render_target_desc.SetStencilAttachment(stencil0);
62
63 return std::unique_ptr<SurfaceGLES>(
64 new SurfaceGLES(std::move(swap_callback), render_target_desc));
65 }
66
67 SurfaceGLES::SurfaceGLES(SwapCallback swap_callback,
68 const RenderTarget& target_desc)
69 : Surface(target_desc), swap_callback_(std::move(swap_callback)) {}
70
71 // |Surface|
72 SurfaceGLES::~SurfaceGLES() = default;
73
74 // |Surface|
75 bool SurfaceGLES::Present() const {
76 return swap_callback_ ? swap_callback_() : false;
77 }
78
79 } // namespace impeller
impeller::TextureUsageMask
uint64_t TextureUsageMask
Definition: formats.h:274
impeller::Attachment::store_action
StoreAction store_action
Definition: formats.h:594
impeller::ColorAttachment
Definition: formats.h:599
impeller::TextureDescriptor::format
PixelFormat format
Definition: texture_descriptor.h:42
impeller::RenderTarget::SetColorAttachment
RenderTarget & SetColorAttachment(const ColorAttachment &attachment, size_t index)
Definition: render_target.cc:180
texture_gles.h
context_gles.h
impeller::SampleCount::kCount1
@ kCount1
impeller::TextureUsage::kRenderTarget
@ kRenderTarget
impeller::StoreAction::kDontCare
@ kDontCare
impeller::TextureDescriptor::sample_count
SampleCount sample_count
Definition: texture_descriptor.h:47
impeller::TextureDescriptor::usage
TextureUsageMask usage
Definition: texture_descriptor.h:45
surface_gles.h
impeller::Surface
Definition: surface.h:17
impeller::TextureDescriptor::type
TextureType type
Definition: texture_descriptor.h:41
impeller::StencilAttachment
Definition: formats.h:607
impeller::Color::DarkSlateGray
static constexpr Color DarkSlateGray()
Definition: color.h:408
impeller::TSize< int64_t >
impeller::LoadAction::kClear
@ kClear
impeller::ColorAttachment::clear_color
Color clear_color
Definition: formats.h:600
impeller::Attachment::texture
std::shared_ptr< Texture > texture
Definition: formats.h:591
impeller::StorageMode::kDevicePrivate
@ kDevicePrivate
impeller::RenderTarget
Definition: render_target.h:48
impeller::StoreAction::kStore
@ kStore
impeller::StencilAttachment::clear_stencil
uint32_t clear_stencil
Definition: formats.h:608
impeller::TextureType::kTexture2D
@ kTexture2D
impeller::TextureDescriptor::size
ISize size
Definition: texture_descriptor.h:43
impeller::RenderTarget::SetStencilAttachment
RenderTarget & SetStencilAttachment(std::optional< StencilAttachment > attachment)
Definition: render_target.cc:199
std
Definition: comparable.h:98
impeller::SurfaceGLES::SwapCallback
std::function< bool(void)> SwapCallback
Definition: surface_gles.h:19
impeller::BackendCast< ContextGLES, Context >::Cast
static ContextGLES & Cast(Context &base)
Definition: backend_cast.h:14
impeller::Attachment::load_action
LoadAction load_action
Definition: formats.h:593
impeller::SurfaceGLES
Definition: surface_gles.h:17
impeller::TextureGLES::IsWrapped::kWrapped
@ kWrapped
impeller::TextureDescriptor::storage_mode
StorageMode storage_mode
Definition: texture_descriptor.h:40
impeller::SurfaceGLES::WrapFBO
static std::unique_ptr< Surface > WrapFBO(const std::shared_ptr< Context > &context, SwapCallback swap_callback, GLuint fbo, PixelFormat color_format, ISize fbo_size)
Definition: surface_gles.cc:14
impeller::TextureDescriptor
A lightweight object that describes the attributes of a texture that can then used an allocator to cr...
Definition: texture_descriptor.h:39
impeller::PixelFormat
PixelFormat
The Pixel formats supported by Impeller. The naming convention denotes the usage of the component,...
Definition: formats.h:94
impeller::SurfaceGLES::~SurfaceGLES
~SurfaceGLES() override
config.h
impeller
Definition: aiks_context.cc:10