Added --deepColor option to SampleApp, triggers creation of a ten-bit/channel buffer on Windows.

src/utils/win/SkWGL.h

 /*
  * 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 "SkRefCnt.h"
 
 #ifndef SkWGL_DEFINED
@@ skipping 19 matching lines @@
 #if defined(SK_LOCAL_LEAN_AND_MEAN)
     #undef WIN32_LEAN_AND_MEAN
     #undef SK_LOCAL_LEAN_AND_MEAN
 #endif
 
 #define SK_WGL_DRAW_TO_WINDOW                       0x2001
 #define SK_WGL_ACCELERATION                         0x2003
 #define SK_WGL_SUPPORT_OPENGL                       0x2010
 #define SK_WGL_DOUBLE_BUFFER                        0x2011
 #define SK_WGL_COLOR_BITS                           0x2014
+#define SK_WGL_RED_BITS                             0x2015
+#define SK_WGL_GREEN_BITS                           0x2017
+#define SK_WGL_BLUE_BITS                            0x2019
 #define SK_WGL_ALPHA_BITS                           0x201B
 #define SK_WGL_STENCIL_BITS                         0x2023
 #define SK_WGL_FULL_ACCELERATION                    0x2027
 #define SK_WGL_SAMPLE_BUFFERS                       0x2041
 #define SK_WGL_SAMPLES                              0x2042
 #define SK_WGL_CONTEXT_MAJOR_VERSION                0x2091
 #define SK_WGL_CONTEXT_MINOR_VERSION                0x2092
 #define SK_WGL_CONTEXT_LAYER_PLANE                  0x2093
 #define SK_WGL_CONTEXT_FLAGS                        0x2094
 #define SK_WGL_CONTEXT_PROFILE_MASK                 0x9126
@@ skipping 81 matching lines @@
     kGLPreferCompatibilityProfile_SkWGLContextRequest,
     /** Requests to create GL ES profile context. */
     kGLES_SkWGLContextRequest
 };
 /**
  * Helper to create an OpenGL context for a DC using WGL. Configs with a sample count >= to
  * msaaSampleCount are preferred but if none is available then a context with a lower sample count
  * (including non-MSAA) will be created. If preferCoreProfile is true but a core profile cannot be
  * created then a compatible profile context will be created.
  */
-HGLRC SkCreateWGLContext(HDC dc, int msaaSampleCount, SkWGLContextRequest context);
+HGLRC SkCreateWGLContext(HDC dc, int msaaSampleCount, bool deepColor, SkWGLContextRequest context);
 
 /**
  * Helper class for creating a pbuffer context and deleting all the handles when finished. This
  * requires that a device context has been created. However, the pbuffer gets its own device
  * context. The original device context can be released once the pbuffer context is created.
  */
 class SkWGLPbufferContext : public SkRefCnt {
 public:
     static SkWGLPbufferContext* Create(HDC parentDC, int msaaSampleCount,
                                        SkWGLContextRequest contextType);
 
     virtual ~SkWGLPbufferContext();
 
     HDC getDC() const { return fDC; }
     HGLRC getGLRC() const { return fGLRC; }
 
 private:
     SkWGLPbufferContext(HPBUFFER pbuffer, HDC dc, HGLRC glrc);
 
     HPBUFFER        fPbuffer;
     HDC             fDC;
     HGLRC           fGLRC;
     SkWGLExtensions fExtensions;
 };
 
 #endif