Adds read pixels to GrTexture and GrRenderTarget

Adds SkGrRenderTargetPixelRef for SkBitmaps that are backed by RTs that aren't textures.
Adds onReadPixels implementations for SkGr pixel ref types



git-svn-id: http://skia.googlecode.com/svn/trunk@1056 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 3 insertions, 8 deletions

diff --git a/samplecode/SampleApp.cpp b/samplecode/SampleApp.cpp
index c525a5de92..e58fa26b08 100644
--- a/samplecode/SampleApp.cpp
+++ b/samplecode/SampleApp.cpp
@@ -766,17 +766,12 @@ void SampleWindow::afterChildren(SkCanvas* orig) {
 
         SkCanvas* canvas = fGpuCanvas ? fGpuCanvas : orig;
         SkDevice* device = canvas->getDevice();
-        SkBitmap bitmap;
-        SkIRect bounds = {
-            0, 0,
-            SkScalarRound(this->width()),
-            SkScalarRound(this->height())
-        };
-        if (device->readPixels(bounds, &bitmap)) {
+        SkBitmap bmp;
+        if (device->accessBitmap(false).copyTo(&bmp, SkBitmap::kARGB_8888_Config)) {
             static int gSampleGrabCounter;
             SkString name;
             name.printf("sample_grab_%d", gSampleGrabCounter++);
-            SkImageEncoder::EncodeFile(name.c_str(), bitmap,
+            SkImageEncoder::EncodeFile(name.c_str(), bmp,
                                        SkImageEncoder::kPNG_Type, 100);
         }
     }