The Tor Browser: gfx/skia/trunk/src/gpu/gl/GrGLContext.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /*

     2  * Copyright 2013 Google Inc.

     3  *

     4  * Use of this source code is governed by a BSD-style license that can be

     5  * found in the LICENSE file.

     6  */

     9 #ifndef GrGLContext_DEFINED

    10 #define GrGLContext_DEFINED

    12 #include "gl/GrGLExtensions.h"

    13 #include "gl/GrGLInterface.h"

    14 #include "GrGLCaps.h"

    15 #include "GrGLSL.h"

    16 #include "GrGLUtil.h"

    18 #include "SkString.h"

    20 /**

    21  * Encapsulates information about an OpenGL context including the OpenGL

    22  * version, the GrGLStandard type of the context, and GLSL version.

    23  */

    24 class GrGLContextInfo {

    25 public:

    26     /**

    27      * Default constructor

    28      */

    29     GrGLContextInfo() {

    30         fGLCaps.reset(SkNEW(GrGLCaps));

    31         this->reset();

    32     }

    34     GrGLContextInfo(const GrGLContextInfo& that) {

    35         fGLCaps.reset(SkNEW(GrGLCaps));

    36         *this = that;

    37     }

    39     GrGLContextInfo& operator= (const GrGLContextInfo&);

    41     /**

    42      * Initializes a GrGLContextInfo from a GrGLInterface and the currently

    43      * bound OpenGL context accessible by the GrGLInterface.

    44      */

    45     bool initialize(const GrGLInterface* interface);

    46     bool isInitialized() const;

    48     GrGLStandard standard() const { return fInterface->fStandard; }

    49     GrGLVersion version() const { return fGLVersion; }

    50     GrGLSLGeneration glslGeneration() const { return fGLSLGeneration; }

    51     GrGLVendor vendor() const { return fVendor; }

    52     GrGLRenderer renderer() const { return fRenderer; }

    53     /** Is this a mesa-based driver. Does not mean it is the osmesa software rasterizer. */

    54     bool isMesa() const { return fIsMesa; }

    55     /** Are we running inside Chromium (using the command buffer)? We make some different tradeoffs

    56         about what errors to check for because queries are synchronous. We should probably expose

    57         this as an option for clients other than Chromium. */

    58     bool isChromium() const { return fIsChromium; }

    59     const GrGLCaps* caps() const { return fGLCaps.get(); }

    60     GrGLCaps* caps() { return fGLCaps; }

    61     bool hasExtension(const char* ext) const {

    62         if (!this->isInitialized()) {

    63             return false;

    64         }

    65         return fInterface->hasExtension(ext);

    66     }

    68     /**

    69      * Reset the information

    70      */

    71     void reset();

    73 protected:

    74     SkAutoTUnref<const GrGLInterface>   fInterface;

    75     GrGLVersion                         fGLVersion;

    76     GrGLSLGeneration                    fGLSLGeneration;

    77     GrGLVendor                          fVendor;

    78     GrGLRenderer                        fRenderer;

    79     bool                                fIsMesa;

    80     bool                                fIsChromium;

    81     SkAutoTUnref<GrGLCaps>              fGLCaps;

    82 };

    84 /**

    85  * Extension of GrGLContextInfo that also provides access to GrGLInterface.

    86  */

    87 class GrGLContext : public GrGLContextInfo {

    88 public:

    89     /**

    90      * Creates a GrGLContext from a GrGLInterface and the currently

    91      * bound OpenGL context accessible by the GrGLInterface.

    92      */

    93     explicit GrGLContext(const GrGLInterface* interface) {

    94         this->initialize(interface);

    95     }

    97     GrGLContext(const GrGLContext& that) : INHERITED(that) {}

    99     GrGLContext& operator= (const GrGLContext& that) {

   100         this->INHERITED::operator=(that);

   101         return *this;

   102     }

   104     const GrGLInterface* interface() const { return fInterface.get(); }

   106 private:

   107     typedef GrGLContextInfo INHERITED;

   108 };

   110 #endif

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