shader_library.h File Reference

#include <memory>
#include <string>
#include <unordered_map>
#include "flutter/lib/gpu/export.h"
#include "flutter/lib/gpu/shader.h"
#include "flutter/lib/ui/dart_wrapper.h"
#include "fml/memory/ref_ptr.h"

Go to the source code of this file.

Classes
class	flutter::gpu::ShaderLibrary
	An immutable collection of shaders loaded from a shader bundle asset. More...

Namespaces
namespace	flutter
namespace	flutter::gpu

Functions
FLUTTER_GPU_EXPORT Dart_Handle	InternalFlutterGpu_ShaderLibrary_InitializeWithAsset (Dart_Handle wrapper, Dart_Handle asset_name)
FLUTTER_GPU_EXPORT Dart_Handle	InternalFlutterGpu_ShaderLibrary_GetShader (flutter::gpu::ShaderLibrary *wrapper, Dart_Handle shader_name, Dart_Handle shader_wrapper)

Function Documentation

InternalFlutterGpu_ShaderLibrary_GetShader()

FLUTTER_GPU_EXPORT Dart_Handle InternalFlutterGpu_ShaderLibrary_GetShader ( flutter::gpu::ShaderLibrary *  wrapper, Dart_Handle  shader_name, Dart_Handle  shader_wrapper  )

extern

Definition at line 376 of file shader_library.cc.

                                {
  FML_DCHECK(Dart_IsString(shader_name));
  auto shader =
      wrapper->GetShader(tonic::StdStringFromDart(shader_name), shader_wrapper);
  if (!shader) {
    return Dart_Null();
  }
  return tonic::ToDart(shader.get());
}

References FML_DCHECK, flutter::gpu::ShaderLibrary::GetShader(), tonic::StdStringFromDart(), and tonic::ToDart().

InternalFlutterGpu_ShaderLibrary_InitializeWithAsset()

FLUTTER_GPU_EXPORT Dart_Handle InternalFlutterGpu_ShaderLibrary_InitializeWithAsset ( Dart_Handle  wrapper, Dart_Handle  asset_name  )

extern

Exports

Definition at line 352 of file shader_library.cc.

                            {
  if (!Dart_IsString(asset_name)) {
    return tonic::ToDart("Asset name must be a string");
  }
 
  std::optional<std::string> out_error;
  auto impeller_context = flutter::gpu::Context::GetDefaultContext(out_error);
  if (out_error.has_value()) {
    return tonic::ToDart(out_error.value());
  }
 
  std::string error;
  auto res = flutter::gpu::ShaderLibrary::MakeFromAsset(
      impeller_context->GetBackendType(), tonic::StdStringFromDart(asset_name),
      error);
  if (!res) {
    return tonic::ToDart(error);
  }
  res->AssociateWithDartWrapper(wrapper);
  return Dart_Null();
}

References error, flutter::gpu::Context::GetDefaultContext(), flutter::gpu::ShaderLibrary::MakeFromAsset(), tonic::StdStringFromDart(), and tonic::ToDart().