kc3-lang/angle/src/libANGLE/renderer/gl/glx/FunctionsGLX.h

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• Hash : 4e6f6545
  Author :
  Date : 2020-04-16T16:31:24
  

  GLX: Support X11 pixmaps
  
  Add support for creating EGL pixmaps from X11 pixmaps using GLX.
  Pixmaps are needed for various external APIs such as VAAPI.
  
  Add support for EGL_NOK_texture_from_pixmap to allow binding
  pixmaps to textures.
  
  BUG=angleproject:4560
  
  Change-Id: I4a6d3ad7e87151ff5317bbdaaf093ac1b46daf5f
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2153805
  Commit-Queue: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
  Reviewed-by: Tim Van Patten <timvp@google.com>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/libANGLE/renderer/gl/glx/FunctionsGLX.h

• //
  // Copyright 2015 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  // FunctionsGLX.h: Defines the FunctionsGLX class to load functions and data from GLX
  
  #ifndef LIBANGLE_RENDERER_GL_GLX_FUNCTIONSGLX_H_
  #define LIBANGLE_RENDERER_GL_GLX_FUNCTIONSGLX_H_
  
  #include <string>
  #include <vector>
  
  #include "libANGLE/renderer/gl/glx/platform_glx.h"
  
  namespace rx
  {
  
  class FunctionsGLX
  {
    public:
      FunctionsGLX();
      ~FunctionsGLX();
  
      // Load data from GLX, can be called multiple times
      bool initialize(Display *xDisplay, int screen, std::string *errorString);
      void terminate();
  
      bool hasExtension(const char *extension) const;
      int majorVersion;
      int minorVersion;
  
      Display *getDisplay() const;
      int getScreen() const;
  
      PFNGETPROCPROC getProc;
  
      // GLX 1.0
      glx::Context createContext(XVisualInfo *visual, glx::Context share, bool direct) const;
      void destroyContext(glx::Context context) const;
      Bool makeCurrent(glx::Drawable drawable, glx::Context context) const;
      void swapBuffers(glx::Drawable drawable) const;
      Bool queryExtension(int *errorBase, int *event) const;
      Bool queryVersion(int *major, int *minor) const;
      glx::Context getCurrentContext() const;
      glx::Drawable getCurrentDrawable() const;
      void waitX() const;
      void waitGL() const;
  
      // GLX 1.1
      const char *getClientString(int name) const;
      const char *queryExtensionsString() const;
  
      // GLX 1.3
      glx::FBConfig *getFBConfigs(int *nElements) const;
      glx::FBConfig *chooseFBConfig(const int *attribList, int *nElements) const;
      int getFBConfigAttrib(glx::FBConfig config, int attribute, int *value) const;
      XVisualInfo *getVisualFromFBConfig(glx::FBConfig config) const;
      glx::Window createWindow(glx::FBConfig config, Window window, const int *attribList) const;
      void destroyWindow(glx::Window window) const;
      glx::Pbuffer createPbuffer(glx::FBConfig config, const int *attribList) const;
      void destroyPbuffer(glx::Pbuffer pbuffer) const;
      void queryDrawable(glx::Drawable drawable, int attribute, unsigned int *value) const;
      glx::Pixmap createPixmap(glx::FBConfig config, Pixmap pixmap, const int *attribList) const;
      void destroyPixmap(Pixmap pixmap) const;
  
      // GLX_ARB_create_context
      glx::Context createContextAttribsARB(glx::FBConfig config,
                                           glx::Context shareContext,
                                           Bool direct,
                                           const int *attribList) const;
  
      // GLX_EXT_swap_control
      void swapIntervalEXT(glx::Drawable drawable, int interval) const;
  
      // GLX_MESA_swap_control
      int swapIntervalMESA(int interval) const;
  
      // GLX_SGI_swap_control
      int swapIntervalSGI(int interval) const;
  
      // GLX_OML_sync_control
      bool getSyncValuesOML(glx::Drawable drawable, int64_t *ust, int64_t *msc, int64_t *sbc) const;
      bool getMscRateOML(glx::Drawable drawable, int32_t *numerator, int32_t *denominator) const;
  
      // GLX_EXT_texture_from_pixmap
      void bindTexImageEXT(glx::Drawable drawable, int buffer, const int *attribList) const;
      void releaseTexImageEXT(glx::Drawable drawable, int buffer) const;
  
    private:
      // So as to isolate GLX from angle we do not include angleutils.h and cannot
      // use angle::NonCopyable so we replicated it here instead.
      FunctionsGLX(const FunctionsGLX &) = delete;
      void operator=(const FunctionsGLX &) = delete;
  
      struct GLXFunctionTable;
  
      static void *sLibHandle;
      Display *mXDisplay;
      int mXScreen;
  
      GLXFunctionTable *mFnPtrs;
      std::vector<std::string> mExtensions;
  };
  
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_GL_GLX_FUNCTIONSGLX_H_
  

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