Flutter Impeller
impeller::BlitCopyBufferToTextureCommandGLES Struct Reference

#include <blit_command_gles.h>

Inheritance diagram for impeller::BlitCopyBufferToTextureCommandGLES:
impeller::BlitEncodeGLES impeller::BlitCopyBufferToTextureCommand impeller::BackendCast< BlitEncodeGLES, BlitCommand > impeller::BlitCommand

Public Member Functions

 ~BlitCopyBufferToTextureCommandGLES () 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 BlitEncodeGLESCast (BlitCommand &base)
 
static const BlitEncodeGLESCast (const BlitCommand &base)
 
static BlitEncodeGLESCast (BlitCommand *base)
 
static const BlitEncodeGLESCast (const BlitCommand *base)
 
- Public Attributes inherited from impeller::BlitCopyBufferToTextureCommand
BufferView source
 
std::shared_ptr< Texturedestination
 
IRect destination_region
 
uint32_t mip_level = 0
 
uint32_t slice = 0
 
- Public Attributes inherited from impeller::BlitCommand
std::string label
 

Detailed Description

Definition at line 23 of file blit_command_gles.h.

Constructor & Destructor Documentation

◆ ~BlitCopyBufferToTextureCommandGLES()

impeller::BlitCopyBufferToTextureCommandGLES::~BlitCopyBufferToTextureCommandGLES ( )
overridedefault

Member Function Documentation

◆ Encode()

bool impeller::BlitCopyBufferToTextureCommandGLES::Encode ( const ReactorGLES reactor) const
overridevirtual

Implements impeller::BlitEncodeGLES.

Definition at line 225 of file blit_command_gles.cc.

226  {
227  TextureGLES& texture_gles = TextureGLES::Cast(*destination);
228 
229  if (texture_gles.GetType() != TextureGLES::Type::kTexture) {
230  VALIDATION_LOG << "Incorrect texture usage flags for setting contents on "
231  "this texture object.";
232  return false;
233  }
234 
235  if (texture_gles.IsWrapped()) {
236  VALIDATION_LOG << "Cannot set the contents of a wrapped texture.";
237  return false;
238  }
239 
240  const auto& tex_descriptor = texture_gles.GetTextureDescriptor();
241 
242  if (tex_descriptor.size.IsEmpty()) {
243  return true;
244  }
245 
246  if (!tex_descriptor.IsValid() ||
247  source.GetRange().length !=
248  BytesPerPixelForPixelFormat(tex_descriptor.format) *
250  return false;
251  }
252 
254 
255  GLenum texture_type;
256  GLenum texture_target;
257  switch (tex_descriptor.type) {
259  texture_type = GL_TEXTURE_2D;
260  texture_target = GL_TEXTURE_2D;
261  break;
263  VALIDATION_LOG << "Multisample texture uploading is not supported for "
264  "the OpenGLES backend.";
265  return false;
267  texture_type = GL_TEXTURE_CUBE_MAP;
268  texture_target = GL_TEXTURE_CUBE_MAP_POSITIVE_X + slice;
269  break;
271  texture_type = GL_TEXTURE_EXTERNAL_OES;
272  texture_target = GL_TEXTURE_EXTERNAL_OES;
273  break;
274  }
275 
276  TexImage2DData data = TexImage2DData(tex_descriptor.format, source);
277  if (!data.IsValid()) {
278  VALIDATION_LOG << "Invalid texture format.";
279  return false;
280  }
281 
282  auto gl_handle = texture_gles.GetGLHandle();
283  if (!gl_handle.has_value()) {
285  << "Texture was collected before it could be uploaded to the GPU.";
286  return false;
287  }
288  const auto& gl = reactor.GetProcTable();
289  gl.BindTexture(texture_type, gl_handle.value());
290  const GLvoid* tex_data = data.buffer_view.GetBuffer()->OnGetContents() +
291  data.buffer_view.GetRange().offset;
292 
293  // GL_INVALID_OPERATION if the texture array has not been
294  // defined by a previous glTexImage2D operation.
295  if (!texture_gles.IsSliceInitialized(slice)) {
296  gl.TexImage2D(texture_target, // target
297  mip_level, // LOD level
298  data.internal_format, // internal format
299  tex_descriptor.size.width, // width
300  tex_descriptor.size.height, // height
301  0u, // border
302  data.external_format, // external format
303  data.type, // type
304  nullptr // data
305  );
306  texture_gles.MarkSliceInitialized(slice);
307  }
308 
309  {
310  gl.PixelStorei(GL_UNPACK_ALIGNMENT, 1);
311  gl.TexSubImage2D(texture_target, // target
312  mip_level, // LOD level
313  destination_region.GetX(), // xoffset
314  destination_region.GetY(), // yoffset
315  destination_region.GetWidth(), // width
316  destination_region.GetHeight(), // height
317  data.external_format, // external format
318  data.type, // type
319  tex_data // data
320 
321  );
322  }
323  return true;
324 }
static TextureGLES & Cast(Texture &base)
Definition: backend_cast.h:13
constexpr size_t BytesPerPixelForPixelFormat(PixelFormat format)
Definition: formats.h:466
std::shared_ptr< Texture > destination
Definition: blit_command.h:40
Range GetRange() const
Definition: buffer_view.h:27
size_t length
Definition: range.h:15
constexpr Type GetY() const
Returns the Y coordinate of the upper left corner, equivalent to |GetOrigin().y|.
Definition: rect.h:341
constexpr Type GetHeight() const
Returns the height of the rectangle, equivalent to |GetSize().height|.
Definition: rect.h:351
constexpr T Area() const
Get the area of the rectangle, equivalent to |GetSize().Area()|.
Definition: rect.h:380
constexpr Type GetX() const
Returns the X coordinate of the upper left corner, equivalent to |GetOrigin().x|.
Definition: rect.h:337
constexpr Type GetWidth() const
Returns the width of the rectangle, equivalent to |GetSize().width|.
Definition: rect.h:345
std::shared_ptr< const fml::Mapping > data
Definition: texture_gles.cc:68
#define VALIDATION_LOG
Definition: validation.h:91

References impeller::TRect< T >::Area(), impeller::BytesPerPixelForPixelFormat(), impeller::BackendCast< TextureGLES, Texture >::Cast(), data, impeller::BlitCopyBufferToTextureCommand::destination, impeller::BlitCopyBufferToTextureCommand::destination_region, impeller::TextureGLES::GetGLHandle(), impeller::TRect< T >::GetHeight(), impeller::ReactorGLES::GetProcTable(), impeller::BufferView::GetRange(), impeller::Texture::GetTextureDescriptor(), impeller::TextureGLES::GetType(), impeller::TRect< T >::GetWidth(), impeller::TRect< T >::GetX(), impeller::TRect< T >::GetY(), impeller::TextureGLES::IsSliceInitialized(), impeller::TextureGLES::IsWrapped(), impeller::TextureGLES::kTexture, impeller::kTexture2D, impeller::kTexture2DMultisample, impeller::kTextureCube, impeller::kTextureExternalOES, impeller::kUploadFromHost, impeller::Range::length, impeller::TextureGLES::MarkSliceInitialized(), impeller::BlitCopyBufferToTextureCommand::mip_level, impeller::BlitCopyBufferToTextureCommand::slice, impeller::BlitCopyBufferToTextureCommand::source, and VALIDATION_LOG.

◆ GetLabel()

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

Implements impeller::BlitEncodeGLES.

Definition at line 221 of file blit_command_gles.cc.

221  {
222  return label;
223 }

References impeller::BlitCommand::label.


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