skia2/include/gpu/GrContextThreadSafeProxy.h
Robert Phillips b25e0650dd Convert more tests to GrDirectContext/GrRecordingContext pair
TBR=bsalomon@google.com
Change-Id: I5bb78f4e36c4037669e7907cbe818da743480ef4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/305009
Reviewed-by: Adlai Holler <adlai@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
2020-07-23 12:49:06 +00:00

123 lines
5.8 KiB
C++

/*
* Copyright 2019 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrContextThreadSafeProxy_DEFINED
#define GrContextThreadSafeProxy_DEFINED
#include "include/core/SkImageInfo.h"
#include "include/core/SkRefCnt.h"
#include "include/gpu/GrContextOptions.h"
#include "include/gpu/GrTypes.h"
#include <atomic>
class GrBackendFormat;
class GrCaps;
class GrContextThreadSafeProxyPriv;
class GrTextBlobCache;
class SkSurfaceCharacterization;
class SkSurfaceProps;
/**
* Can be used to perform actions related to the generating GrContext in a thread safe manner. The
* proxy does not access the 3D API (e.g. OpenGL) that backs the generating GrContext.
*/
class SK_API GrContextThreadSafeProxy final : public SkNVRefCnt<GrContextThreadSafeProxy> {
public:
~GrContextThreadSafeProxy();
/**
* Create a surface characterization for a DDL that will be replayed into the GrContext
* that created this proxy. On failure the resulting characterization will be invalid (i.e.,
* "!c.isValid()").
*
* @param cacheMaxResourceBytes The max resource bytes limit that will be in effect when the
* DDL created with this characterization is replayed.
* Note: the contract here is that the DDL will be created as
* if it had a full 'cacheMaxResourceBytes' to use. If replayed
* into a GrContext that already has locked GPU memory, the
* replay can exceed the budget. To rephrase, all resource
* allocation decisions are made at record time and at playback
* time the budget limits will be ignored.
* @param ii The image info specifying properties of the SkSurface that
* the DDL created with this characterization will be replayed
* into.
* Note: Ganesh doesn't make use of the SkImageInfo's alphaType
* @param backendFormat Information about the format of the GPU surface that will
* back the SkSurface upon replay
* @param sampleCount The sample count of the SkSurface that the DDL created with
* this characterization will be replayed into
* @param origin The origin of the SkSurface that the DDL created with this
* characterization will be replayed into
* @param surfaceProps The surface properties of the SkSurface that the DDL created
* with this characterization will be replayed into
* @param isMipMapped Will the surface the DDL will be replayed into have space
* allocated for mipmaps?
* @param willUseGLFBO0 Will the surface the DDL will be replayed into be backed by GL
* FBO 0. This flag is only valid if using an GL backend.
* @param isTextureable Will the surface be able to act as a texture?
* @param isProtected Will the (Vulkan) surface be DRM protected?
*/
SkSurfaceCharacterization createCharacterization(
size_t cacheMaxResourceBytes,
const SkImageInfo& ii,
const GrBackendFormat& backendFormat,
int sampleCount,
GrSurfaceOrigin origin,
const SkSurfaceProps& surfaceProps,
bool isMipMapped,
bool willUseGLFBO0 = false,
bool isTextureable = true,
GrProtected isProtected = GrProtected::kNo);
/*
* Retrieve the default GrBackendFormat for a given SkColorType and renderability.
* It is guaranteed that this backend format will be the one used by the following
* SkColorType and SkSurfaceCharacterization-based createBackendTexture methods.
*
* The caller should check that the returned format is valid.
*/
GrBackendFormat defaultBackendFormat(SkColorType ct, GrRenderable renderable) const;
bool isValid() const { return nullptr != fCaps; }
bool operator==(const GrContextThreadSafeProxy& that) const {
// Each GrContext should only ever have a single thread-safe proxy.
SkASSERT((this == &that) == (this->fContextID == that.fContextID));
return this == &that;
}
bool operator!=(const GrContextThreadSafeProxy& that) const { return !(*this == that); }
// Provides access to functions that aren't part of the public API.
GrContextThreadSafeProxyPriv priv();
const GrContextThreadSafeProxyPriv priv() const;
private:
friend class GrContextThreadSafeProxyPriv; // for ctor and hidden methods
// DDL TODO: need to add unit tests for backend & maybe options
GrContextThreadSafeProxy(GrBackendApi, const GrContextOptions&);
void abandonContext();
bool abandoned() const;
// TODO: This should be part of the constructor but right now we have a chicken-and-egg problem
// with GrContext where we get the caps by creating a GPU which requires a context (see the
// `init` method on GrContext_Base).
void init(sk_sp<const GrCaps>);
const GrBackendApi fBackend;
const GrContextOptions fOptions;
const uint32_t fContextID;
sk_sp<const GrCaps> fCaps;
std::unique_ptr<GrTextBlobCache> fTextBlobCache;
std::atomic<bool> fAbandoned{false};
};
#endif