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

#include <blit_command_gles.h>

Inheritance diagram for impeller::BlitCopyTextureToTextureCommandGLES:
impeller::BlitEncodeGLES impeller::BlitCopyTextureToTextureCommand impeller::BackendCast< BlitEncodeGLES, BlitCommand > impeller::BlitCommand

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 ( )
overridedefault

Member Function Documentation

◆ Encode()

bool impeller::BlitCopyTextureToTextureCommandGLES::Encode ( const ReactorGLES &  reactor) const
overridevirtual

Implements impeller::BlitEncodeGLES.

Definition at line 97 of file blit_command_gles.cc.

98 {
99 const auto& gl = reactor.GetProcTable();
100
101 // glBlitFramebuffer is a GLES3 proc. Since we target GLES2, we need to
102 // emulate the blit when it's not available in the driver.
103 if (!gl.BlitFramebuffer.IsAvailable()) {
104 // TODO(157064): Emulate the blit using a raster draw call here.
105 VALIDATION_LOG << "Texture blit fallback not implemented yet for GLES2.";
106 return false;
107 }
108
109 GLuint read_fbo = GL_NONE;
110 GLuint draw_fbo = GL_NONE;
111 fml::ScopedCleanupClosure delete_fbos([&gl, &read_fbo, &draw_fbo]() {
112 DeleteFBO(gl, read_fbo, GL_READ_FRAMEBUFFER);
113 DeleteFBO(gl, draw_fbo, GL_DRAW_FRAMEBUFFER);
114 });
115
116 {
117 auto read = ConfigureFBO(gl, source, GL_READ_FRAMEBUFFER);
118 if (!read.has_value()) {
119 return false;
120 }
121 read_fbo = read.value();
122 }
123
124 {
125 auto draw = ConfigureFBO(gl, destination, GL_DRAW_FRAMEBUFFER);
126 if (!draw.has_value()) {
127 return false;
128 }
129 draw_fbo = draw.value();
130 }
131
132 gl.Disable(GL_SCISSOR_TEST);
133 gl.Disable(GL_DEPTH_TEST);
134 gl.Disable(GL_STENCIL_TEST);
135
136 gl.BlitFramebuffer(source_region.GetX(), // srcX0
137 source_region.GetY(), // srcY0
138 source_region.GetWidth(), // srcX1
139 source_region.GetHeight(), // srcY1
140 destination_origin.x, // dstX0
141 destination_origin.y, // dstY0
142 source_region.GetWidth(), // dstX1
143 source_region.GetHeight(), // dstY1
144 GL_COLOR_BUFFER_BIT, // mask
145 GL_NEAREST // filter
146 );
147
148 return true;
149};
fml::ScopedCleanupClosure
Wraps a closure that is invoked in the destructor unless released by the caller.
Definition closure.h:32
impeller::ConfigureFBO
static std::optional< GLuint > ConfigureFBO(const ProcTableGLES &gl, const std::shared_ptr< Texture > &texture, GLenum fbo_type)
Definition blit_command_gles.cc:52
impeller::DeleteFBO
static void DeleteFBO(const ProcTableGLES &gl, GLuint fbo, GLenum type)
Definition blit_command_gles.cc:45
impeller::BlitCopyTextureToTextureCommand::destination
std::shared_ptr< Texture > destination
Definition blit_command.h:21
impeller::BlitCopyTextureToTextureCommand::source
std::shared_ptr< Texture > source
Definition blit_command.h:20
impeller::TRect::GetY
constexpr Type GetY() const
Returns the Y coordinate of the upper left corner, equivalent to |GetOrigin().y|.
Definition rect.h:371
impeller::TRect::GetHeight
constexpr Type GetHeight() const
Returns the height of the rectangle, equivalent to |GetSize().height|.
Definition rect.h:381
impeller::TRect::GetX
constexpr Type GetX() const
Returns the X coordinate of the upper left corner, equivalent to |GetOrigin().x|.
Definition rect.h:367
impeller::TRect::GetWidth
constexpr Type GetWidth() const
Returns the width of the rectangle, equivalent to |GetSize().width|.
Definition rect.h:375
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
overridevirtual

Implements impeller::BlitEncodeGLES.

Definition at line 93 of file blit_command_gles.cc.

93 {
94 return label;
95}

References impeller::BlitCommand::label.

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