Add idle texture callback mechanism.
A proc can be registered with a GrTexture. The proc will be called when
it is safe to delete the texture is "idle." Idle means it referred to
outside of GrResourceCache and that the I/O operations on the GPU are
completed (this latter part applieas to Vulkan only).
The intended use case for this is to call promise image texture release
procs once we start caching GrTextures for deinstantiated promise
images.
Bug= skia:8613
Change-Id: Idce9a4292fef7b15370a053060d8878a9d6828fa
Reviewed-on: https://skia-review.googlesource.com/c/178937
Reviewed-by: Greg Daniel <egdaniel@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
diff --git a/include/gpu/GrTexture.h b/include/gpu/GrTexture.h
index df2f542..286b7ce 100644
--- a/include/gpu/GrTexture.h
+++ b/include/gpu/GrTexture.h
@@ -60,6 +60,17 @@
this->setRelease(std::move(helper));
}
+ /**
+ * Installs a proc on this texture. It will be called when the texture becomes "idle". Idle is
+ * defined to mean that the texture has no refs or pending IOs and that GPU I/O operations on
+ * the texture are completed if the backend API disallows deletion of a texture before such
+ * operations occur (e.g. Vulkan). After the idle proc is called it is removed. The idle proc
+ * will always be called before the texture is destroyed, even in unusual shutdown scenarios
+ * (e.g. GrContext::abandonContext()).
+ */
+ using IdleProc = void(void*);
+ virtual void setIdleProc(IdleProc, void* context) = 0;
+
/** Access methods that are only to be used within Skia code. */
inline GrTexturePriv texturePriv();
inline const GrTexturePriv texturePriv() const;