blob: 6a41ed9164dfc7476a630306e8d91b98ebebfc3b [file] [log] [blame]
* Copyright 2013 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef GrGLExtensions_DEFINED
#define GrGLExtensions_DEFINED
#include "../../private/SkTArray.h"
#include "GrGLFunctions.h"
#include "SkString.h"
#include <utility>
struct GrGLInterface;
class SkJSONWriter;
* This helper queries the current GL context for its extensions, remembers them, and can be
* queried. It supports both glGetString- and glGetStringi-style extension string APIs and will
* use the latter if it is available. It also will query for EGL extensions if a eglQueryString
* implementation is provided.
class SK_API GrGLExtensions {
GrGLExtensions() {}
GrGLExtensions(const GrGLExtensions&);
GrGLExtensions& operator=(const GrGLExtensions&);
void swap(GrGLExtensions* that) {
using std::swap;
swap(fStrings, that->fStrings);
swap(fInitialized, that->fInitialized);
* We sometimes need to use this class without having yet created a GrGLInterface. This version
* of init expects that getString is always non-NULL while getIntegerv and getStringi are non-
* NULL if on desktop GL with version 3.0 or higher. Otherwise it will fail.
bool init(GrGLStandard standard,
GrGLFunction<GrGLGetStringFn> getString,
GrGLFunction<GrGLGetStringiFn> getStringi,
GrGLFunction<GrGLGetIntegervFn> getIntegerv,
GrGLFunction<GrEGLQueryStringFn> queryString = nullptr,
GrEGLDisplay eglDisplay = nullptr);
bool isInitialized() const { return fInitialized; }
* Queries whether an extension is present. This will fail if init() has not been called.
bool has(const char[]) const;
* Removes an extension if present. Returns true if the extension was present before the call.
bool remove(const char[]);
* Adds an extension to list
void add(const char[]);
void reset() { fStrings.reset(); }
void dumpJSON(SkJSONWriter*) const;
bool fInitialized = false;
SkTArray<SkString> fStrings;