| Flutter Impeller |

Public Member Functions | List of all members
impeller::BlitCopyTextureToTextureCommandGLES Struct Reference

`#include <blit_command_gles.h>`

Inheritance diagram for impeller::BlitCopyTextureToTextureCommandGLES:

## Public Member Functions
| ~BlitCopyTextureToTextureCommandGLES () override
std::string | GetLabel () const override
bool | Encode (const ReactorGLES &reactor) const override
Public Member Functions inherited from impeller::BlitEncodeGLES
virtual | ~BlitEncodeGLES ()

## Additional Inherited Members
Static Public Member Functions inherited from impeller::BackendCast< BlitEncodeGLES, BlitCommand >
static BlitEncodeGLES & | Cast (BlitCommand &base)
static const BlitEncodeGLES & | Cast (const BlitCommand &base)
static BlitEncodeGLES * | Cast (BlitCommand *base)
static const BlitEncodeGLES * | Cast (const BlitCommand *base)
Public Attributes inherited from impeller::BlitCopyTextureToTextureCommand
std::shared_ptr< Texture > | source
std::shared_ptr< Texture > | destination
IRect | source_region
IPoint | destination_origin
Public Attributes inherited from impeller::BlitCommand
std::string | label

## Detailed Description

Definition at line 33 of file blit_command_gles.h.

## Constructor & Destructor Documentation

## ◆ ~BlitCopyTextureToTextureCommandGLES()

impeller::BlitCopyTextureToTextureCommandGLES::~BlitCopyTextureToTextureCommandGLES | ( |  | ) |
| override default

## Member Function Documentation

## ◆ Encode()

bool impeller::BlitCopyTextureToTextureCommandGLES::Encode | ( | const ReactorGLES & | reactor | ) | const
| override virtual

Implements impeller::BlitEncodeGLES.

Definition at line 95 of file blit_command_gles.cc.

96 {
97 const auto& gl = reactor.GetProcTable();
98
99 // glBlitFramebuffer is a GLES3 proc. Since we target GLES2, we need to
100 // emulate the blit when it's not available in the driver.
101 if (!gl.BlitFramebuffer.IsAvailable()) {
102 // TODO(157064): Emulate the blit using a raster draw call here.
103 VALIDATION_LOG << "Texture blit fallback not implemented yet for GLES2.";
104 return false;
105 }
106
107 GLuint read_fbo = GL_NONE;
108 GLuint draw_fbo = GL_NONE;
109 fml::ScopedCleanupClosure delete_fbos([&gl, &read_fbo, &draw_fbo]() {
110 DeleteFBO(gl, read_fbo, GL_READ_FRAMEBUFFER);
111 DeleteFBO(gl, draw_fbo, GL_DRAW_FRAMEBUFFER);
112 });
113
114 {
115 auto read = ConfigureFBO(gl, source, GL_READ_FRAMEBUFFER);
116 if (!read.has_value()) {
117 return false;
118 }
119 read_fbo = read.value();
120 }
121
122 {
123 auto draw = ConfigureFBO(gl, destination, GL_DRAW_FRAMEBUFFER);
124 if (!draw.has_value()) {
125 return false;
126 }
127 draw_fbo = draw.value();
128 }
129
130 gl.Disable(GL_SCISSOR_TEST);
131 gl.Disable(GL_DEPTH_TEST);
132 gl.Disable(GL_STENCIL_TEST);
133
134 gl.BlitFramebuffer(source_region.GetX(), // srcX0
135 source_region.GetY(), // srcY0
136 source_region.GetWidth(), // srcX1
137 source_region.GetHeight(), // srcY1
138 destination_origin.x, // dstX0
139 destination_origin.y, // dstY0
140 source_region.GetWidth(), // dstX1
141 source_region.GetHeight(), // dstY1
142 GL_COLOR_BUFFER_BIT, // mask
143 GL_NEAREST // filter
144 );
145
146 return true;
147 };
impeller::ConfigureFBO
static std::optional< GLuint > ConfigureFBO(const ProcTableGLES &gl, const std::shared_ptr< Texture > &texture, GLenum fbo_type)
Definition: blit_command_gles.cc:50
impeller::DeleteFBO
static void DeleteFBO(const ProcTableGLES &gl, GLuint fbo, GLenum type)
Definition: blit_command_gles.cc:43
impeller::BlitCopyTextureToTextureCommand::destination_origin
IPoint destination_origin
Definition: blit_command.h:23
impeller::BlitCopyTextureToTextureCommand::destination
std::shared_ptr< Texture > destination
Definition: blit_command.h:21
impeller::BlitCopyTextureToTextureCommand::source_region
IRect source_region
Definition: blit_command.h:22
impeller::BlitCopyTextureToTextureCommand::source
std::shared_ptr< Texture > source
Definition: blit_command.h:20
impeller::TPoint::y
Type y
Definition: point.h:31
impeller::TPoint::x
Type x
Definition: point.h:30
impeller::TRect::GetY
constexpr Type GetY() const
Returns the Y coordinate of the upper left corner, equivalent to |GetOrigin().y|.
Definition: rect.h:341
impeller::TRect::GetHeight
constexpr Type GetHeight() const
Returns the height of the rectangle, equivalent to |GetSize().height|.
Definition: rect.h:351
impeller::TRect::GetX
constexpr Type GetX() const
Returns the X coordinate of the upper left corner, equivalent to |GetOrigin().x|.
Definition: rect.h:337
impeller::TRect::GetWidth
constexpr Type GetWidth() const
Returns the width of the rectangle, equivalent to |GetSize().width|.
Definition: rect.h:345
VALIDATION_LOG
#define VALIDATION_LOG
Definition: validation.h:91

References impeller::ConfigureFBO(), impeller::DeleteFBO(), impeller::BlitCopyTextureToTextureCommand::destination, impeller::BlitCopyTextureToTextureCommand::destination_origin, impeller::TRect< T >::GetHeight(), impeller::ReactorGLES::GetProcTable(), impeller::TRect< T >::GetWidth(), impeller::TRect< T >::GetX(), impeller::TRect< T >::GetY(), impeller::BlitCopyTextureToTextureCommand::source, impeller::BlitCopyTextureToTextureCommand::source_region, VALIDATION_LOG, impeller::TPoint< T >::x, and impeller::TPoint< T >::y.

## ◆ GetLabel()

std::string impeller::BlitCopyTextureToTextureCommandGLES::GetLabel | ( |  | ) | const
| override virtual

Implements impeller::BlitEncodeGLES.

Definition at line 91 of file blit_command_gles.cc.

91 {
92 return label;
93 }
impeller::BlitCommand::label
std::string label
Definition: blit_command.h:16

References impeller::BlitCommand::label.

The documentation for this struct was generated from the following files:

- impeller/renderer/backend/gles/blit_command_gles.h
- impeller/renderer/backend/gles/blit_command_gles.cc