1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/gpu/gl/GrGLContext.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,110 @@
1.4 +/*
1.5 + * Copyright 2013 Google Inc.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license that can be
1.8 + * found in the LICENSE file.
1.9 + */
1.10 +
1.11 +
1.12 +#ifndef GrGLContext_DEFINED
1.13 +#define GrGLContext_DEFINED
1.14 +
1.15 +#include "gl/GrGLExtensions.h"
1.16 +#include "gl/GrGLInterface.h"
1.17 +#include "GrGLCaps.h"
1.18 +#include "GrGLSL.h"
1.19 +#include "GrGLUtil.h"
1.20 +
1.21 +#include "SkString.h"
1.22 +
1.23 +/**
1.24 + * Encapsulates information about an OpenGL context including the OpenGL
1.25 + * version, the GrGLStandard type of the context, and GLSL version.
1.26 + */
1.27 +class GrGLContextInfo {
1.28 +public:
1.29 + /**
1.30 + * Default constructor
1.31 + */
1.32 + GrGLContextInfo() {
1.33 + fGLCaps.reset(SkNEW(GrGLCaps));
1.34 + this->reset();
1.35 + }
1.36 +
1.37 + GrGLContextInfo(const GrGLContextInfo& that) {
1.38 + fGLCaps.reset(SkNEW(GrGLCaps));
1.39 + *this = that;
1.40 + }
1.41 +
1.42 + GrGLContextInfo& operator= (const GrGLContextInfo&);
1.43 +
1.44 + /**
1.45 + * Initializes a GrGLContextInfo from a GrGLInterface and the currently
1.46 + * bound OpenGL context accessible by the GrGLInterface.
1.47 + */
1.48 + bool initialize(const GrGLInterface* interface);
1.49 + bool isInitialized() const;
1.50 +
1.51 + GrGLStandard standard() const { return fInterface->fStandard; }
1.52 + GrGLVersion version() const { return fGLVersion; }
1.53 + GrGLSLGeneration glslGeneration() const { return fGLSLGeneration; }
1.54 + GrGLVendor vendor() const { return fVendor; }
1.55 + GrGLRenderer renderer() const { return fRenderer; }
1.56 + /** Is this a mesa-based driver. Does not mean it is the osmesa software rasterizer. */
1.57 + bool isMesa() const { return fIsMesa; }
1.58 + /** Are we running inside Chromium (using the command buffer)? We make some different tradeoffs
1.59 + about what errors to check for because queries are synchronous. We should probably expose
1.60 + this as an option for clients other than Chromium. */
1.61 + bool isChromium() const { return fIsChromium; }
1.62 + const GrGLCaps* caps() const { return fGLCaps.get(); }
1.63 + GrGLCaps* caps() { return fGLCaps; }
1.64 + bool hasExtension(const char* ext) const {
1.65 + if (!this->isInitialized()) {
1.66 + return false;
1.67 + }
1.68 + return fInterface->hasExtension(ext);
1.69 + }
1.70 +
1.71 + /**
1.72 + * Reset the information
1.73 + */
1.74 + void reset();
1.75 +
1.76 +protected:
1.77 + SkAutoTUnref<const GrGLInterface> fInterface;
1.78 + GrGLVersion fGLVersion;
1.79 + GrGLSLGeneration fGLSLGeneration;
1.80 + GrGLVendor fVendor;
1.81 + GrGLRenderer fRenderer;
1.82 + bool fIsMesa;
1.83 + bool fIsChromium;
1.84 + SkAutoTUnref<GrGLCaps> fGLCaps;
1.85 +};
1.86 +
1.87 +/**
1.88 + * Extension of GrGLContextInfo that also provides access to GrGLInterface.
1.89 + */
1.90 +class GrGLContext : public GrGLContextInfo {
1.91 +public:
1.92 + /**
1.93 + * Creates a GrGLContext from a GrGLInterface and the currently
1.94 + * bound OpenGL context accessible by the GrGLInterface.
1.95 + */
1.96 + explicit GrGLContext(const GrGLInterface* interface) {
1.97 + this->initialize(interface);
1.98 + }
1.99 +
1.100 + GrGLContext(const GrGLContext& that) : INHERITED(that) {}
1.101 +
1.102 + GrGLContext& operator= (const GrGLContext& that) {
1.103 + this->INHERITED::operator=(that);
1.104 + return *this;
1.105 + }
1.106 +
1.107 + const GrGLInterface* interface() const { return fInterface.get(); }
1.108 +
1.109 +private:
1.110 + typedef GrGLContextInfo INHERITED;
1.111 +};
1.112 +
1.113 +#endif
