Add support to dump font cache texture for debug purposes

src/gpu/GrTextStrike.cpp

Index: src/gpu/GrTextStrike.cpp
diff --git a/src/gpu/GrTextStrike.cpp b/src/gpu/GrTextStrike.cpp
index e399c91f6c5b9bdfc5416f0585628eb073894870..c55d8ab4b5f3b2a85bc6d449fc9c436c6fcfdf1c 100644
--- a/src/gpu/GrTextStrike.cpp
+++ b/src/gpu/GrTextStrike.cpp
@@ -10,6 +10,7 @@
 #include "GrRectanizer.h"
 #include "GrTextStrike.h"
 #include "GrTextStrike_impl.h"
+#include "SkString.h"
 
 SK_DEFINE_INST_COUNT(GrFontScaler)
 SK_DEFINE_INST_COUNT(GrKey)
@@ -170,6 +171,21 @@ void GrFontCache::validate() const {
 }
 #endif
 

[robertphillips, 2013/10/02 15:07:28]

SK_DEBUG? DEV?

+void GrFontCache::dump() const {

[robertphillips, 2013/10/02 15:07:28]

I feel this needs some fancy naming: gDumpCount, sDumpCount?

+    static int dumpCount = 0;
+    for (int i = 0; i < kMaskFormatCount; ++i) {

[robertphillips, 2013/10/02 15:07:28]

NULL !=

+        if (fAtlasMgr[i]) {
+            GrTexture* texture = fAtlasMgr[i]->getTexture();

[robertphillips, 2013/10/02 15:07:28]

NULL !=

+            if (texture) {
+                SkString filename;

[robertphillips, 2013/10/02 15:07:28]

Would it be more helpful to convert the mask format to a short text string?

+                filename.printf("fontcache_%d%d.png", dumpCount, i);
+                texture->savePixels(filename.c_str());
+            }
+        }
+    }
+    ++dumpCount;
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 
 #ifdef SK_DEBUG