Add support for creating texture backed images where Skia will delete the texture.

tests/ResourceCacheTest.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 // Include here to ensure SK_SUPPORT_GPU is set correctly before it is examined.
 #include "SkTypes.h"
 
 #if SK_SUPPORT_GPU
 
 #include "GrContext.h"
 #include "GrContextFactory.h"
+#include "gl/GrGLInterface.h"
 #include "GrGpu.h"
 #include "GrGpuResourceCacheAccess.h"
 #include "GrGpuResourcePriv.h"
 #include "GrRenderTarget.h"
 #include "GrRenderTargetPriv.h"
 #include "GrResourceCache.h"
+#include "GrTest.h"
 #include "SkCanvas.h"
 #include "SkGr.h"
 #include "SkMessageBus.h"
 #include "SkSurface.h"
 #include "Test.h"
+#include "../src/gpu/gl/GrGLDefines.h"
+#include "../src/gpu/gl/GrGLUtil.h"
 
 static const int gWidth = 640;
 static const int gHeight = 480;
 
 ////////////////////////////////////////////////////////////////////////////////
 static void test_cache(skiatest::Reporter* reporter, GrContext* context, SkCanvas* canvas) {
     const SkIRect size = SkIRect::MakeWH(gWidth, gHeight);
 
     SkBitmap src;
     src.allocN32Pixels(size.width(), size.height());
@@ skipping 130 matching lines @@
             REPORTER_ASSERT(reporter,
                         smallMSAART0 && smallMSAART1 &&
                         smallMSAART0->asRenderTarget() &&
                         smallMSAART1->asRenderTarget() &&
                         smallMSAART0->asRenderTarget()->renderTargetPriv().getStencilAttachment() !=
                         smallMSAART1->asRenderTarget()->renderTargetPriv().getStencilAttachment());
         }
     }
 }
 
+static void test_wrapped_resources(skiatest::Reporter* reporter, GrContext* context) {
+    GrTestTarget tt;
+    context->getTestTarget(&tt);
+
+    const GrGLInterface* gl = tt.glInterface();
+    if (!gl) {
+        return;
+    }
+
+    GrGLuint texIDs[2];
+    static const int kW = 100;
+    static const int kH = 100;
+    GR_GL_CALL(gl, GenTextures(2, texIDs));
+    GR_GL_CALL(gl, ActiveTexture(GR_GL_TEXTURE0));
+    GR_GL_CALL(gl, PixelStorei(GR_GL_UNPACK_ALIGNMENT, 1));
+    GR_GL_CALL(gl, BindTexture(GR_GL_TEXTURE_2D, texIDs[0]));
+    GR_GL_CALL(gl, TexImage2D(GR_GL_TEXTURE_2D, 0, GR_GL_RGBA, kW, kH, 0, GR_GL_RGBA,
+                              GR_GL_UNSIGNED_BYTE, NULL));
+    GR_GL_CALL(gl, BindTexture(GR_GL_TEXTURE_2D, texIDs[1]));
+    GR_GL_CALL(gl, TexImage2D(GR_GL_TEXTURE_2D, 0, GR_GL_RGBA, kW, kH, 0, GR_GL_RGBA,
+                              GR_GL_UNSIGNED_BYTE, NULL));
+    context->resetContext();
+
+    GrBackendTextureDesc desc;
+    desc.fConfig = kBGRA_8888_GrPixelConfig;
+    desc.fWidth = kW;
+    desc.fHeight = kH;
+
+    desc.fTextureHandle = texIDs[0];
+    SkAutoTUnref<GrTexture> borrowed(context->textureProvider()->wrapBackendTexture(
+        desc, kBorrow_GrWrapOwnership));
+
+    desc.fTextureHandle = texIDs[1];
+    SkAutoTUnref<GrTexture> adopted(context->textureProvider()->wrapBackendTexture(
+        desc, kAdopt_GrWrapOwnership));
+
+    REPORTER_ASSERT(reporter, SkToBool(borrowed) && SkToBool(adopted));
+    if (!SkToBool(borrowed) || !SkToBool(adopted)) {
+        return;
+    }
+
+    borrowed.reset(NULL);
+    adopted.reset(NULL);
+
+    context->flush();
+
+    GrGLboolean borrowedIsAlive;
+    GrGLboolean adoptedIsAlive;
+    GR_GL_CALL_RET(gl, borrowedIsAlive, IsTexture(texIDs[0]));
+    GR_GL_CALL_RET(gl, adoptedIsAlive, IsTexture(texIDs[1]));
+
+    REPORTER_ASSERT(reporter, borrowedIsAlive);
+    REPORTER_ASSERT(reporter, !adoptedIsAlive);
+
+    GR_GL_CALL(gl, GenTextures(1, &texIDs[0]));
+
+    context->resetContext();
+}
+
 class TestResource : public GrGpuResource {
     static const size_t kDefaultSize = 100;
     enum ScratchConstructor { kScratchConstructor };
 public:
     SK_DECLARE_INST_COUNT(TestResource);
     /** Property that distinctly categorizes the resource.
      * For example, textures have width, height, ... */
     enum SimulatedProperty { kA_SimulatedProperty, kB_SimulatedProperty };
 
     TestResource(GrGpu* gpu, size_t size, GrGpuResource::LifeCycle lifeCycle)
@@ skipping 164 matching lines @@
     make_unique_key<0>(&uniqueKey, 0);
 
     // Create a scratch, a unique, and a wrapped resource
     TestResource* scratch =
             TestResource::CreateScratch(context->getGpu(), TestResource::kB_SimulatedProperty);
     scratch->setSize(10);
     TestResource* unique = SkNEW_ARGS(TestResource, (context->getGpu()));
     unique->setSize(11);
     unique->resourcePriv().setUniqueKey(uniqueKey);
     TestResource* wrapped = SkNEW_ARGS(TestResource,
-                                       (context->getGpu(), GrGpuResource::kWrapped_LifeCycle));
+                                       (context->getGpu(), GrGpuResource::kBorrowed_LifeCycle));
     wrapped->setSize(12);
     TestResource* unbudgeted = SkNEW_ARGS(TestResource,
                                           (context->getGpu(), GrGpuResource::kUncached_LifeCycle));
     unbudgeted->setSize(13);
 
     // Make sure we can't add a unique key to the wrapped resource
     GrUniqueKey uniqueKey2;
     make_unique_key<0>(&uniqueKey2, 1);
     wrapped->resourcePriv().setUniqueKey(uniqueKey2);
     REPORTER_ASSERT(reporter, NULL == cache->findAndRefUniqueResource(uniqueKey2));
@@ skipping 17 matching lines @@
     REPORTER_ASSERT(reporter, scratch->gpuMemorySize() + unique->gpuMemorySize() ==
                               cache->getBudgetedResourceBytes());
 
     // Unreffing the wrapped resource should free it right away.
     wrapped->unref();
     REPORTER_ASSERT(reporter, 3 == cache->getResourceCount());
     REPORTER_ASSERT(reporter, scratch->gpuMemorySize() + unique->gpuMemorySize() +
                               unbudgeted->gpuMemorySize() == cache->getResourceBytes());
 
     // Now try freeing the budgeted resources first
-    wrapped = SkNEW_ARGS(TestResource, (context->getGpu(), GrGpuResource::kWrapped_LifeCycle));
+    wrapped = SkNEW_ARGS(TestResource, (context->getGpu(), GrGpuResource::kBorrowed_LifeCycle));
     scratch->setSize(12);
     unique->unref();
     cache->purgeAllUnlocked();
     REPORTER_ASSERT(reporter, 3 == cache->getResourceCount());
     REPORTER_ASSERT(reporter, scratch->gpuMemorySize() + wrapped->gpuMemorySize() +
                               unbudgeted->gpuMemorySize() == cache->getResourceBytes());
     REPORTER_ASSERT(reporter, 1 == cache->getBudgetedResourceCount());
     REPORTER_ASSERT(reporter, scratch->gpuMemorySize() == cache->getBudgetedResourceBytes());
 
     scratch->unref();
@@ skipping 56 matching lines @@
     REPORTER_ASSERT(reporter, 2 == cache->getBudgetedResourceCount());
     REPORTER_ASSERT(reporter, 21 == cache->getBudgetedResourceBytes());
 
     unbudgeted->unref();
     REPORTER_ASSERT(reporter, 2 == cache->getResourceCount());
     REPORTER_ASSERT(reporter, 21 == cache->getResourceBytes());
     REPORTER_ASSERT(reporter, 2 == cache->getBudgetedResourceCount());
     REPORTER_ASSERT(reporter, 21 == cache->getBudgetedResourceBytes());
 
     wrapped = SkNEW_ARGS(TestResource,
-                         (context->getGpu(), large, GrGpuResource::kWrapped_LifeCycle));
+                         (context->getGpu(), large, GrGpuResource::kBorrowed_LifeCycle));
     REPORTER_ASSERT(reporter, 3 == cache->getResourceCount());
     REPORTER_ASSERT(reporter, 21 + large == cache->getResourceBytes());
     REPORTER_ASSERT(reporter, 2 == cache->getBudgetedResourceCount());
     REPORTER_ASSERT(reporter, 21 == cache->getBudgetedResourceBytes());
 
     wrapped->unref();
     REPORTER_ASSERT(reporter, 2 == cache->getResourceCount());
     REPORTER_ASSERT(reporter, 21 == cache->getResourceBytes());
     REPORTER_ASSERT(reporter, 2 == cache->getBudgetedResourceCount());
     REPORTER_ASSERT(reporter, 21 == cache->getBudgetedResourceBytes());
@@ skipping 700 matching lines @@
         GrSurfaceDesc desc;
         desc.fConfig = kSkia8888_GrPixelConfig;
         desc.fFlags = kRenderTarget_GrSurfaceFlag;
         desc.fWidth = gWidth;
         desc.fHeight = gHeight;
         SkImageInfo info = SkImageInfo::MakeN32Premul(gWidth, gHeight);
         SkAutoTUnref<SkSurface> surface(SkSurface::NewRenderTarget(context,
                                                                    SkSurface::kNo_Budgeted, info));
         test_cache(reporter, context, surface->getCanvas());
         test_stencil_buffers(reporter, context);
+        test_wrapped_resources(reporter, context);
     }
 
     // The below tests create their own mock contexts.
     test_no_key(reporter);
     test_budgeting(reporter);
     test_unbudgeted(reporter);
     test_unbudgeted_to_scratch(reporter);
     test_duplicate_unique_key(reporter);
     test_duplicate_scratch_key(reporter);
     test_remove_scratch_key(reporter);
     test_scratch_key_consistency(reporter);
     test_purge_invalidated(reporter);
     test_cache_chained_purge(reporter);
     test_resource_size_changed(reporter);
     test_timestamp_wrap(reporter);
     test_flush(reporter);
     test_large_resource_count(reporter);
 }
 
 #endif