skia2/include/gpu/GrExternalTextureData.h
Brian Osman 2c2bc11aea Add GrExternalTextureData and SkCrossContextImageData
GrExternalTextureData is an API for exporting the backend-specific
information about a texture in a type-safe way, and without pointing
into the GrTexture. The new detachBackendTexture API lets us release
ownership of a texture to the client.

SkCrossContextImageData is the public API that lets clients upload
textures on one thread/GrContext, then safely transfer ownership to
another thread and GrContext for rendering.

Only GL is implemented/supported right now. Vulkan support requires
that we add thread-safe memory pools, or otherwise transfer the
actual memory block containing the texture to the new context.

Re-land of https://skia-review.googlesource.com/c/8529/

BUG=skia:

Change-Id: I48ebd57d1ea0cfd3a1db10c475f2903afb821966
Reviewed-on: https://skia-review.googlesource.com/8960
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
2017-02-28 20:59:57 +00:00

31 lines
670 B
C++

/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrExternalTextureData_DEFINED
#define GrExternalTextureData_DEFINED
#include "GrTypes.h"
#include "GrTypesPriv.h"
class SK_API GrExternalTextureData : SkNoncopyable {
public:
GrExternalTextureData(GrFence fence) : fFence(fence) {}
virtual ~GrExternalTextureData() {}
virtual GrBackend getBackend() const = 0;
GrFence getFence() const { return fFence; }
protected:
virtual GrBackendObject getBackendObject() const = 0;
GrFence fFence;
friend class SkCrossContextImageData;
};
#endif