a3baf3be0e
BUG=skia: R=bsalomon@google.com Author: egdaniel@google.com Review URL: https://codereview.chromium.org/174123003 git-svn-id: http://skia.googlecode.com/svn/trunk@13538 2bbb7eff-a529-9590-31e7-b0007b416f81
72 lines
2.0 KiB
C++
72 lines
2.0 KiB
C++
/*
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* Copyright 2013 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef GrGLExtensions_DEFINED
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#define GrGLExtensions_DEFINED
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#include "GrGLFunctions.h"
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#include "SkString.h"
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#include "SkTArray.h"
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struct GrGLInterface;
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/**
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* This helper queries the current GL context for its extensions, remembers them, and can be
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* queried. It supports both glGetString- and glGetStringi-style extension string APIs and will
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* use the latter if it is available.
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*/
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class GrGLExtensions {
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public:
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GrGLExtensions() : fInitialized(false), fStrings(SkNEW(SkTArray<SkString>)) {}
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GrGLExtensions(const GrGLExtensions&);
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GrGLExtensions& operator=(const GrGLExtensions&);
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void swap(GrGLExtensions* that) {
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fStrings.swap(&that->fStrings);
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SkTSwap(fInitialized, that->fInitialized);
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}
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/**
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* We sometimes need to use this class without having yet created a GrGLInterface. This version
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* of init expects that getString is always non-NULL while getIntegerv and getStringi are non-
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* NULL if on desktop GL with version 3.0 or higher. Otherwise it will fail.
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*/
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bool init(GrGLStandard standard,
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GrGLGetStringProc getString,
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GrGLGetStringiProc getStringi,
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GrGLGetIntegervProc getIntegerv);
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bool isInitialized() const { return fInitialized; }
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/**
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* Queries whether an extension is present. This will fail if init() has not been called.
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*/
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bool has(const char[]) const;
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/**
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* Removes an extension if present. Returns true if the extension was present before the call.
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*/
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bool remove(const char[]);
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/**
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* Adds an extension to list
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*/
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void add(const char[]);
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void reset() { fStrings->reset(); }
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void print(const char* sep = "\n") const;
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private:
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bool fInitialized;
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SkAutoTDelete<SkTArray<SkString> > fStrings;
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};
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#endif
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