Revert "Revert of Move copy-surface-as-draw fallback to GrGLGpu. (patchset #12 id:220001 of https:/…

src/gpu/gl/GrGLCaps.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef GrGLCaps_DEFINED
 #define GrGLCaps_DEFINED
 
 #include "GrCaps.h"
+#include "GrGLSL.h"
 #include "GrGLStencilAttachment.h"
 #include "SkChecksum.h"
 #include "SkTHash.h"
 #include "SkTArray.h"
 
 class GrGLContextInfo;
 class GrGLSLCaps;
 
 /**
  * Stores some capabilities of a GL context. Most are determined by the GL
@@ skipping 336 matching lines @@
             return fFormat    == rhs.fFormat
                 && fType      == rhs.fType
                 && fFboFormat == rhs.fFboFormat;
         }
     };
     mutable SkTHashMap<ReadPixelsSupportedFormat, bool> fReadPixelsSupportedCache;
 
     typedef GrCaps INHERITED;
 };
 
-
 class GrGLSLCaps : public GrShaderCaps {
 public:
     SK_DECLARE_INST_COUNT(GrGLSLCaps)
 
     /**
     * Indicates how GLSL must interact with advanced blend equations. The KHR extension requires
     * special layout qualifiers in the fragment shader.
     */
     enum AdvBlendEqInteraction {
         kNotSupported_AdvBlendEqInteraction,     //<! No _blend_equation_advanced extension
@@ skipping 28 matching lines @@
 
     AdvBlendEqInteraction advBlendEqInteraction() const { return fAdvBlendEqInteraction; }
 
     bool mustEnableAdvBlendEqs() const {
         return fAdvBlendEqInteraction >= kGeneralEnable_AdvBlendEqInteraction;
     }
 
     bool mustEnableSpecificAdvBlendEqs() const {
         return fAdvBlendEqInteraction == kSpecificEnables_AdvBlendEqInteraction;
     }
+    
+    bool mustDeclareFragmentShaderOutput() const {
+        return fGLSLGeneration > k110_GrGLSLGeneration;
+    }
+
+    GrGLSLGeneration generation() const { return fGLSLGeneration; }
 
     /**
     * Returns a string containing the caps info.
     */
     SkString dump() const override;
 
 private:
     void init(const GrGLContextInfo&, const GrGLInterface*, const GrGLCaps&);
 
     // Must be called after fGeometryShaderSupport is initialized.
     void initShaderPrecisionTable(const GrGLContextInfo&, const GrGLInterface*);
 
+    GrGLSLGeneration fGLSLGeneration;
+    
     bool fDropsTileOnZeroDivide : 1;
     bool fFBFetchSupport : 1;
     bool fFBFetchNeedsCustomOutput : 1;
 
     const char* fFBFetchColorName;
     const char* fFBFetchExtensionString;
 
     AdvBlendEqInteraction fAdvBlendEqInteraction;
 
     typedef GrShaderCaps INHERITED;
 };
 
 
 #endif