Refactor to separate backend object lifecycle and GpuResource budget decision

src/gpu/gl/GrGLRenderTarget.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrGLRenderTarget.h"
 
-#include "GrRenderTargetPriv.h"
 #include "GrGLGpu.h"
 #include "GrGLUtil.h"
+#include "GrGpuResourcePriv.h"
+#include "GrRenderTargetPriv.h"
 #include "SkTraceMemoryDump.h"
 
 #define GPUGL static_cast<GrGLGpu*>(this->getGpu())
 #define GL_CALL(X) GR_GL_CALL(GPUGL->glInterface(), X)
 
 // Because this class is virtually derived from GrSurface we must explicitly call its constructor.
+// Constructor for wrapped render targets.
 GrGLRenderTarget::GrGLRenderTarget(GrGLGpu* gpu,
                                    const GrSurfaceDesc& desc,
                                    const IDDesc& idDesc,
                                    GrGLStencilAttachment* stencil)
-    : GrSurface(gpu, idDesc.fLifeCycle, desc)
-    , INHERITED(gpu, idDesc.fLifeCycle, desc, idDesc.fSampleConfig, stencil) {
+    : GrSurface(gpu, desc)
+    , INHERITED(gpu, desc, idDesc.fSampleConfig, stencil) {
     this->init(desc, idDesc);
-    this->registerWithCache();
+    this->registerWithCacheWrapped();
 }
 
-GrGLRenderTarget::GrGLRenderTarget(GrGLGpu* gpu, const GrSurfaceDesc& desc, const IDDesc& idDesc,
-                                   Derived)
-    : GrSurface(gpu, idDesc.fLifeCycle, desc)
-    , INHERITED(gpu, idDesc.fLifeCycle, desc, idDesc.fSampleConfig) {
+GrGLRenderTarget::GrGLRenderTarget(GrGLGpu* gpu, const GrSurfaceDesc& desc,
+                                   const IDDesc& idDesc)
+    : GrSurface(gpu, desc)
+    , INHERITED(gpu, desc, idDesc.fSampleConfig) {
     this->init(desc, idDesc);
 }
 
 void GrGLRenderTarget::init(const GrSurfaceDesc& desc, const IDDesc& idDesc) {
     fRTFBOID                = idDesc.fRTFBOID;
     fTexFBOID               = idDesc.fTexFBOID;
     fMSColorRenderbufferID  = idDesc.fMSColorRenderbufferID;
-    fRTLifecycle            = idDesc.fLifeCycle;
+    fRTFBOOwnership         = idDesc.fRTFBOOwnership;
 
     fViewport.fLeft   = 0;
     fViewport.fBottom = 0;
     fViewport.fWidth  = desc.fWidth;
     fViewport.fHeight = desc.fHeight;
 
     fGpuMemorySize = this->totalSamples() * this->totalBytesPerSample();
 
     SkASSERT(fGpuMemorySize <= WorseCaseSize(desc));
 }
@@ skipping 61 matching lines @@
 #ifdef SK_DEBUG
         GrGLenum status;
         GR_GL_CALL_RET(interface, status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER));
         SkASSERT(GR_GL_FRAMEBUFFER_COMPLETE == status);
 #endif
         return true;
     }
 }
 
 void GrGLRenderTarget::onRelease() {
-    if (kBorrowed_LifeCycle != fRTLifecycle) {
+    if (GrBackendObjectOwnership::kBorrowed != fRTFBOOwnership) {
         if (fTexFBOID) {
             GL_CALL(DeleteFramebuffers(1, &fTexFBOID));
         }
         if (fRTFBOID && fRTFBOID != fTexFBOID) {
             GL_CALL(DeleteFramebuffers(1, &fRTFBOID));
         }
         if (fMSColorRenderbufferID) {
             GL_CALL(DeleteRenderbuffers(1, &fMSColorRenderbufferID));
         }
     }
     fRTFBOID                = 0;
     fTexFBOID               = 0;
     fMSColorRenderbufferID  = 0;
     INHERITED::onRelease();
 }
 
 void GrGLRenderTarget::onAbandon() {
     fRTFBOID                = 0;
     fTexFBOID               = 0;
     fMSColorRenderbufferID  = 0;
     INHERITED::onAbandon();
 }
 
 GrGLGpu* GrGLRenderTarget::getGLGpu() const {
     SkASSERT(!this->wasDestroyed());
     return static_cast<GrGLGpu*>(this->getGpu());
 }
 
+bool GrGLRenderTarget::canAttemptStencilAttachment() const {
+    // When we have not created the FBO ID we do not attempt to modify its attachments.
+    return this->resourcePriv().refsWrappedObjects();
+}
+
 void GrGLRenderTarget::dumpMemoryStatistics(SkTraceMemoryDump* traceMemoryDump) const {
     // Don't log the backing texture's contribution to the memory size. This will be handled by the
     // texture object.
 
     // Log any renderbuffer's contribution to memory. We only do this if we own the renderbuffer
     // (have a fMSColorRenderbufferID).
     if (fMSColorRenderbufferID) {
         size_t size = this->msaaSamples() * this->totalBytesPerSample();
 
         // Due to this resource having both a texture and a renderbuffer component, dump as
@@ skipping 39 matching lines @@
 int GrGLRenderTarget::totalSamples() const {
   int total_samples = this->msaaSamples();
 
   if (fTexFBOID != kUnresolvableFBOID) {
       // If we own the resolve buffer then that is one more sample per pixel.
       total_samples += 1;
   }
 
   return total_samples;
 }