Stretch small textures up to 16 pixels on PowerVR 54x

src/gpu/gl/GrGLCaps.cpp

Index: src/gpu/gl/GrGLCaps.cpp
diff --git a/src/gpu/gl/GrGLCaps.cpp b/src/gpu/gl/GrGLCaps.cpp
index 13ce5070a6047a9ada81f5a7cfdf7d59bcdeacb2..fd58026f0dbdfeaab3e2dfa0d698653d2fb807aa 100644
--- a/src/gpu/gl/GrGLCaps.cpp
+++ b/src/gpu/gl/GrGLCaps.cpp
@@ -294,6 +294,10 @@ void GrGLCaps::init(const GrGLContextInfo& ctxInfo, const GrGLInterface* gli) {
     // attachment, hence this min:
     fMaxRenderTargetSize = SkTMin(fMaxTextureSize, fMaxRenderTargetSize);
 

[reed1, 2015/06/01 13:17:20]

// see bug ### -- by experiment there seems to be a min for this device

+    if (kPowerVR54x_GrGLRenderer == ctxInfo.renderer()) {
+        fMinTextureSize = 16;
+    }
+
     fGpuTracingSupport = ctxInfo.hasExtension("GL_EXT_debug_marker");
 
     // Disable scratch texture reuse on Mali and Adreno devices