Flutter Impeller
impeller::BlitCopyTextureToTextureCommandVK Struct Reference

#include <blit_command_vk.h>

Inheritance diagram for impeller::BlitCopyTextureToTextureCommandVK:
impeller::BlitCopyTextureToTextureCommand impeller::BlitEncodeVK impeller::BlitCommand impeller::BackendCast< BlitEncodeVK, BlitCommand >

Public Member Functions

 ~BlitCopyTextureToTextureCommandVK () override
 
std::string GetLabel () const override
 
bool Encode (CommandEncoderVK &encoder) const override
 
- Public Member Functions inherited from impeller::BlitEncodeVK
virtual ~BlitEncodeVK ()
 

Additional Inherited Members

- Static Public Member Functions inherited from impeller::BackendCast< BlitEncodeVK, BlitCommand >
static BlitEncodeVKCast (BlitCommand &base)
 
static const BlitEncodeVKCast (const BlitCommand &base)
 
static BlitEncodeVKCast (BlitCommand *base)
 
static const BlitEncodeVKCast (const BlitCommand *base)
 
- Public Attributes inherited from impeller::BlitCopyTextureToTextureCommand
std::shared_ptr< Texturesource
 
std::shared_ptr< Texturedestination
 
IRect source_region
 
IPoint destination_origin
 
- Public Attributes inherited from impeller::BlitCommand
std::string label
 

Detailed Description

Definition at line 28 of file blit_command_vk.h.

Constructor & Destructor Documentation

◆ ~BlitCopyTextureToTextureCommandVK()

impeller::BlitCopyTextureToTextureCommandVK::~BlitCopyTextureToTextureCommandVK ( )
overridedefault

Member Function Documentation

◆ Encode()

bool impeller::BlitCopyTextureToTextureCommandVK::Encode ( CommandEncoderVK encoder) const
overridevirtual

Implements impeller::BlitEncodeVK.

Definition at line 27 of file blit_command_vk.cc.

28  {
29  const auto& cmd_buffer = encoder.GetCommandBuffer();
30 
31  const auto& src = TextureVK::Cast(*source);
32  const auto& dst = TextureVK::Cast(*destination);
33 
34  if (!encoder.Track(source) || !encoder.Track(destination)) {
35  return false;
36  }
37 
38  BarrierVK src_barrier;
39  src_barrier.cmd_buffer = cmd_buffer;
40  src_barrier.new_layout = vk::ImageLayout::eTransferSrcOptimal;
41  src_barrier.src_access = vk::AccessFlagBits::eTransferWrite |
42  vk::AccessFlagBits::eShaderWrite |
43  vk::AccessFlagBits::eColorAttachmentWrite;
44  src_barrier.src_stage = vk::PipelineStageFlagBits::eTransfer |
45  vk::PipelineStageFlagBits::eFragmentShader |
46  vk::PipelineStageFlagBits::eColorAttachmentOutput;
47  src_barrier.dst_access = vk::AccessFlagBits::eTransferRead;
48  src_barrier.dst_stage = vk::PipelineStageFlagBits::eTransfer;
49 
50  BarrierVK dst_barrier;
51  dst_barrier.cmd_buffer = cmd_buffer;
52  dst_barrier.new_layout = vk::ImageLayout::eTransferDstOptimal;
53  dst_barrier.src_access = {};
54  dst_barrier.src_stage = vk::PipelineStageFlagBits::eTopOfPipe;
55  dst_barrier.dst_access =
56  vk::AccessFlagBits::eShaderRead | vk::AccessFlagBits::eTransferWrite;
57  dst_barrier.dst_stage = vk::PipelineStageFlagBits::eFragmentShader |
58  vk::PipelineStageFlagBits::eTransfer;
59 
60  if (!src.SetLayout(src_barrier) || !dst.SetLayout(dst_barrier)) {
61  VALIDATION_LOG << "Could not complete layout transitions.";
62  return false;
63  }
64 
65  vk::ImageCopy image_copy;
66 
67  image_copy.setSrcSubresource(
68  vk::ImageSubresourceLayers(vk::ImageAspectFlagBits::eColor, 0, 0, 1));
69  image_copy.setDstSubresource(
70  vk::ImageSubresourceLayers(vk::ImageAspectFlagBits::eColor, 0, 0, 1));
71 
72  image_copy.srcOffset =
73  vk::Offset3D(source_region.GetX(), source_region.GetY(), 0);
74  image_copy.dstOffset =
75  vk::Offset3D(destination_origin.x, destination_origin.y, 0);
76  image_copy.extent =
77  vk::Extent3D(source_region.GetWidth(), source_region.GetHeight(), 1);
78 
79  // Issue the copy command now that the images are already in the right
80  // layouts.
81  cmd_buffer.copyImage(src.GetImage(), //
82  src_barrier.new_layout, //
83  dst.GetImage(), //
84  dst_barrier.new_layout, //
85  image_copy //
86  );
87 
88  // If this is an onscreen texture, do not transition the layout
89  // back to shader read.
90  if (dst.IsSwapchainImage()) {
91  return true;
92  }
93 
94  BarrierVK barrier;
95  barrier.cmd_buffer = cmd_buffer;
96  barrier.new_layout = vk::ImageLayout::eShaderReadOnlyOptimal;
97  barrier.src_access = {};
98  barrier.src_stage = vk::PipelineStageFlagBits::eTopOfPipe;
99  barrier.dst_access = vk::AccessFlagBits::eShaderRead;
100  barrier.dst_stage = vk::PipelineStageFlagBits::eFragmentShader;
101 
102  return dst.SetLayout(barrier);
103 }

References impeller::BackendCast< TextureVK, Texture >::Cast(), impeller::BarrierVK::cmd_buffer, impeller::BlitCopyTextureToTextureCommand::destination, impeller::BlitCopyTextureToTextureCommand::destination_origin, impeller::BarrierVK::dst_access, impeller::BarrierVK::dst_stage, impeller::CommandEncoderVK::GetCommandBuffer(), impeller::TRect< T >::GetHeight(), impeller::TRect< T >::GetWidth(), impeller::TRect< T >::GetX(), impeller::TRect< T >::GetY(), impeller::BarrierVK::new_layout, impeller::BlitCopyTextureToTextureCommand::source, impeller::BlitCopyTextureToTextureCommand::source_region, impeller::BarrierVK::src_access, impeller::BarrierVK::src_stage, impeller::CommandEncoderVK::Track(), VALIDATION_LOG, impeller::TPoint< T >::x, and impeller::TPoint< T >::y.

Referenced by impeller::testing::TEST().

◆ GetLabel()

std::string impeller::BlitCopyTextureToTextureCommandVK::GetLabel ( ) const
overridevirtual

Implements impeller::BlitEncodeVK.

Definition at line 23 of file blit_command_vk.cc.

23  {
24  return label;
25 }

References impeller::BlitCommand::label.


The documentation for this struct was generated from the following files:
impeller::TPoint::y
Type y
Definition: point.h:31
impeller::BlitCopyTextureToTextureCommand::destination
std::shared_ptr< Texture > destination
Definition: blit_command.h:20
impeller::TRect::GetX
constexpr Type GetX() const
Returns the X coordinate of the upper left corner, equivalent to |GetOrigin().x|.
Definition: rect.h:300
impeller::TRect::GetHeight
constexpr Type GetHeight() const
Returns the height of the rectangle, equivalent to |GetSize().height|.
Definition: rect.h:314
impeller::BlitCopyTextureToTextureCommand::destination_origin
IPoint destination_origin
Definition: blit_command.h:22
impeller::BlitCommand::label
std::string label
Definition: blit_command.h:15
impeller::TRect::GetWidth
constexpr Type GetWidth() const
Returns the width of the rectangle, equivalent to |GetSize().width|.
Definition: rect.h:308
impeller::BlitCopyTextureToTextureCommand::source
std::shared_ptr< Texture > source
Definition: blit_command.h:19
impeller::TPoint::x
Type x
Definition: point.h:30
VALIDATION_LOG
#define VALIDATION_LOG
Definition: validation.h:73
impeller::BackendCast< TextureVK, Texture >::Cast
static TextureVK & Cast(Texture &base)
Definition: backend_cast.h:13
impeller::BlitCopyTextureToTextureCommand::source_region
IRect source_region
Definition: blit_command.h:21
impeller::TRect::GetY
constexpr Type GetY() const
Returns the Y coordinate of the upper left corner, equivalent to |GetOrigin().y|.
Definition: rect.h:304