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- /*
- * 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/private/GrContext_Base.h"
- class GrBackendFormat;
- class GrContextThreadSafeProxyPriv;
- struct SkImageInfo;
- class SkSurfaceCharacterization;
- /**
- * 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 : public GrContext_Base {
- public:
- ~GrContextThreadSafeProxy() override;
- /**
- * 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);
- bool operator==(const GrContextThreadSafeProxy& that) const {
- // Each GrContext should only ever have a single thread-safe proxy.
- SkASSERT((this == &that) == (this->contextID() == that.contextID()));
- 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&, uint32_t contextID);
- bool init(sk_sp<const GrCaps>, sk_sp<GrSkSLFPFactoryCache>) override;
- typedef GrContext_Base INHERITED;
- };
- #endif
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