Add a GL cap for instanced rendering to floating point

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
@@ skipping 289 matching lines @@
     /// commands cannot be used unless we have base instance support.
     bool drawIndirectSupport() const { return fDrawIndirectSupport; }
 
     /// Is there support for glMultiDraw*Indirect? Note that the baseInstance fields of indirect
     /// draw commands cannot be used unless we have base instance support.
     bool multiDrawIndirectSupport() const { return fMultiDrawIndirectSupport; }
 
     /// Are the baseInstance fields supported in indirect draw commands?
     bool baseInstanceSupport() const { return fBaseInstanceSupport; }
 
+    /// Does the platform have known issuses rendering to floating point when using glDraw*Indirect?
+    bool canDrawIndirectToFloat() const { return fCanDrawIndirectToFloat; }
+
     /// Use indices or vertices in CPU arrays rather than VBOs for dynamic content.
     bool useNonVBOVertexAndIndexDynamicData() const { return fUseNonVBOVertexAndIndexDynamicData; }
 
     /// Does ReadPixels support reading readConfig pixels from a FBO that is renderTargetConfig?
     bool readPixelsSupported(GrPixelConfig renderTargetConfig,
                              GrPixelConfig readConfig,
                              std::function<void (GrGLenum, GrGLint*)> getIntegerv,
                              std::function<bool ()> bindRenderTarget) const;
 
     bool isCoreProfile() const { return fIsCoreProfile; }
@@ skipping 71 matching lines @@
     bool fTextureUsageSupport : 1;
     bool fTextureRedSupport : 1;
     bool fImagingSupport  : 1;
     bool fVertexArrayObjectSupport : 1;
     bool fDirectStateAccessSupport : 1;
     bool fDebugSupport : 1;
     bool fES2CompatibilitySupport : 1;
     bool fDrawIndirectSupport : 1;
     bool fMultiDrawIndirectSupport : 1;
     bool fBaseInstanceSupport : 1;
+    bool fCanDrawIndirectToFloat : 1;
     bool fUseNonVBOVertexAndIndexDynamicData : 1;
     bool fIsCoreProfile : 1;
     bool fBindFragDataLocationSupport : 1;
     bool fRGBA8888PixelsOpsAreSlow : 1;
     bool fPartialFBOReadIsSlow : 1;
     bool fBindUniformLocationSupport : 1;
     bool fRectangleTextureSupport : 1;
     bool fTextureSwizzleSupport : 1;
     bool fMipMapLevelAndLodControlSupport : 1;
     bool fRGBAToBGRAReadbackConversionsAreSlow : 1;
@@ skipping 70 matching lines @@
 
         GrSwizzle fSwizzle;
     };
 
     ConfigInfo fConfigTable[kGrPixelConfigCnt];
 
     typedef GrCaps INHERITED;
 };
 
 #endif