impeller::SurfaceGLES Class Reference

#include <surface_gles.h>

Inheritance diagram for impeller::SurfaceGLES:

Public Types
using	SwapCallback = std::function< bool(void)>

Public Member Functions
	~SurfaceGLES () override
Public Member Functions inherited from impeller::Surface
	Surface ()
	Surface (const RenderTarget &target_desc)
virtual	~Surface ()
const ISize &	GetSize () const
bool	IsValid () const
const RenderTarget &	GetTargetRenderPassDescriptor () const

Static Public Member Functions
static std::unique_ptr< Surface >	WrapFBO (const std::shared_ptr< Context > &context, SwapCallback swap_callback, GLuint fbo, PixelFormat color_format, ISize fbo_size)

Detailed Description

Definition at line 17 of file surface_gles.h.

Member Typedef Documentation

SwapCallback

using impeller::SurfaceGLES::SwapCallback = std::function<bool(void)>

Definition at line 19 of file surface_gles.h.

Constructor & Destructor Documentation

~SurfaceGLES()

impeller::SurfaceGLES::~SurfaceGLES ( )

overridedefault

Member Function Documentation

WrapFBO()

std::unique_ptr< Surface > impeller::SurfaceGLES::WrapFBO ( const std::shared_ptr< Context > &  context, SwapCallback  swap_callback, GLuint  fbo, PixelFormat  color_format, ISize  fbo_size  )

static

Definition at line 14 of file surface_gles.cc.

                    {
  TRACE_EVENT0("impeller", "SurfaceGLES::WrapOnScreenFBO");
 
  if (context == nullptr || !context->IsValid() || !swap_callback) {
    return nullptr;
  }
 
  const auto& gl_context = ContextGLES::Cast(*context);
 
  TextureDescriptor color0_tex;
  color0_tex.type = TextureType::kTexture2D;
  color0_tex.format = color_format;
  color0_tex.size = fbo_size;
  color0_tex.usage = static_cast<TextureUsageMask>(TextureUsage::kRenderTarget);
  color0_tex.sample_count = SampleCount::kCount1;
  color0_tex.storage_mode = StorageMode::kDevicePrivate;
 
  ColorAttachment color0;
  color0.texture = std::make_shared<TextureGLES>(
      gl_context.GetReactor(), color0_tex, TextureGLES::IsWrapped::kWrapped);
  color0.clear_color = Color::DarkSlateGray();
  color0.load_action = LoadAction::kClear;
  color0.store_action = StoreAction::kStore;
 
  TextureDescriptor stencil0_tex;
  stencil0_tex.type = TextureType::kTexture2D;
  stencil0_tex.format = color_format;
  stencil0_tex.size = fbo_size;
  stencil0_tex.usage =
      static_cast<TextureUsageMask>(TextureUsage::kRenderTarget);
  stencil0_tex.sample_count = SampleCount::kCount1;
 
  StencilAttachment stencil0;
  stencil0.clear_stencil = 0;
  stencil0.texture = std::make_shared<TextureGLES>(
      gl_context.GetReactor(), stencil0_tex, TextureGLES::IsWrapped::kWrapped);
  stencil0.load_action = LoadAction::kClear;
  stencil0.store_action = StoreAction::kDontCare;
 
  RenderTarget render_target_desc;
 
  render_target_desc.SetColorAttachment(color0, 0u);
  render_target_desc.SetStencilAttachment(stencil0);
 
  return std::unique_ptr<SurfaceGLES>(
      new SurfaceGLES(std::move(swap_callback), render_target_desc));
}

References impeller::BackendCast< ContextGLES, Context >::Cast(), impeller::ColorAttachment::clear_color, impeller::StencilAttachment::clear_stencil, impeller::Color::DarkSlateGray(), impeller::TextureDescriptor::format, impeller::kClear, impeller::kCount1, impeller::kDevicePrivate, impeller::kDontCare, impeller::kRenderTarget, impeller::kStore, impeller::kTexture2D, impeller::TextureGLES::kWrapped, impeller::Attachment::load_action, impeller::TextureDescriptor::sample_count, impeller::RenderTarget::SetColorAttachment(), impeller::RenderTarget::SetStencilAttachment(), impeller::TextureDescriptor::size, impeller::TextureDescriptor::storage_mode, impeller::Attachment::store_action, impeller::Attachment::texture, impeller::TextureDescriptor::type, and impeller::TextureDescriptor::usage.

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

• impeller/renderer/backend/gles/surface_gles.h
• impeller/renderer/backend/gles/surface_gles.cc