1 // 2 // Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved. 3 // Use of this source code is governed by a BSD-style license that can be 4 // found in the LICENSE file. 5 // 6 7 // Config.h: Defines the egl::Config class, describing the format, type 8 // and size for an egl::Surface. Implements EGLConfig and related functionality. 9 // [EGL 1.4] section 3.4 page 15. 10 11 #ifndef INCLUDE_CONFIG_H_ 12 #define INCLUDE_CONFIG_H_ 13 14 #include <EGL/egl.h> 15 16 #include <set> 17 18 #include "libGLESv2/renderer/Renderer.h" 19 #include "common/angleutils.h" 20 21 namespace egl 22 { 23 class Display; 24 25 class Config 26 { 27 public: 28 Config(rx::ConfigDesc desc, EGLint minSwapInterval, EGLint maxSwapInterval, EGLint texWidth, EGLint texHeight); 29 30 EGLConfig getHandle() const; 31 32 const GLenum mRenderTargetFormat; 33 const GLenum mDepthStencilFormat; 34 const GLint mMultiSample; 35 36 EGLint mBufferSize; // Depth of the color buffer 37 EGLint mRedSize; // Bits of Red in the color buffer 38 EGLint mGreenSize; // Bits of Green in the color buffer 39 EGLint mBlueSize; // Bits of Blue in the color buffer 40 EGLint mLuminanceSize; // Bits of Luminance in the color buffer 41 EGLint mAlphaSize; // Bits of Alpha in the color buffer 42 EGLint mAlphaMaskSize; // Bits of Alpha Mask in the mask buffer 43 EGLBoolean mBindToTextureRGB; // True if bindable to RGB textures. 44 EGLBoolean mBindToTextureRGBA; // True if bindable to RGBA textures. 45 EGLenum mColorBufferType; // Color buffer type 46 EGLenum mConfigCaveat; // Any caveats for the configuration 47 EGLint mConfigID; // Unique EGLConfig identifier 48 EGLint mConformant; // Whether contexts created with this config are conformant 49 EGLint mDepthSize; // Bits of Z in the depth buffer 50 EGLint mLevel; // Frame buffer level 51 EGLBoolean mMatchNativePixmap; // Match the native pixmap format 52 EGLint mMaxPBufferWidth; // Maximum width of pbuffer 53 EGLint mMaxPBufferHeight; // Maximum height of pbuffer 54 EGLint mMaxPBufferPixels; // Maximum size of pbuffer 55 EGLint mMaxSwapInterval; // Maximum swap interval 56 EGLint mMinSwapInterval; // Minimum swap interval 57 EGLBoolean mNativeRenderable; // EGL_TRUE if native rendering APIs can render to surface 58 EGLint mNativeVisualID; // Handle of corresponding native visual 59 EGLint mNativeVisualType; // Native visual type of the associated visual 60 EGLint mRenderableType; // Which client rendering APIs are supported. 61 EGLint mSampleBuffers; // Number of multisample buffers 62 EGLint mSamples; // Number of samples per pixel 63 EGLint mStencilSize; // Bits of Stencil in the stencil buffer 64 EGLint mSurfaceType; // Which types of EGL surfaces are supported. 65 EGLenum mTransparentType; // Type of transparency supported 66 EGLint mTransparentRedValue; // Transparent red value 67 EGLint mTransparentGreenValue; // Transparent green value 68 EGLint mTransparentBlueValue; // Transparent blue value 69 }; 70 71 // Function object used by STL sorting routines for ordering Configs according to [EGL] section 3.4.1 page 24. 72 class SortConfig 73 { 74 public: 75 explicit SortConfig(const EGLint *attribList); 76 77 bool operator()(const Config *x, const Config *y) const; 78 bool operator()(const Config &x, const Config &y) const; 79 80 private: 81 void scanForWantedComponents(const EGLint *attribList); 82 EGLint wantedComponentsSize(const Config &config) const; 83 84 bool mWantRed; 85 bool mWantGreen; 86 bool mWantBlue; 87 bool mWantAlpha; 88 bool mWantLuminance; 89 }; 90 91 class ConfigSet 92 { 93 friend Display; 94 95 public: 96 ConfigSet(); 97 98 void add(rx::ConfigDesc desc, EGLint minSwapInterval, EGLint maxSwapInterval, EGLint texWidth, EGLint texHeight); 99 size_t size() const; 100 bool getConfigs(EGLConfig *configs, const EGLint *attribList, EGLint configSize, EGLint *numConfig); 101 const egl::Config *get(EGLConfig configHandle); 102 103 private: 104 DISALLOW_COPY_AND_ASSIGN(ConfigSet); 105 106 typedef std::set<Config, SortConfig> Set; 107 typedef Set::iterator Iterator; 108 Set mSet; 109 110 static const EGLint mSortAttribs[]; 111 }; 112 } 113 114 #endif // INCLUDE_CONFIG_H_ 115
