<commit_before>// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "base/base_paths.h"
#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/logging.h"
#include "base/native_library.h"
#include "base/path_service.h"
#include "ui/gl/gl_bindings.h"
#include "ui/gl/gl_egl_api_implementation.h"
#include "ui/gl/gl_gl_api_implementation.h"
#include "ui/gl/gl_implementation.h"
#include "ui/gl/gl_osmesa_api_implementation.h"

namespace gfx {

namespace {

void GL_BINDING_CALL MarshalClearDepthToClearDepthf(GLclampd depth) {
  glClearDepthf(static_cast<GLclampf>(depth));
}

void GL_BINDING_CALL MarshalDepthRangeToDepthRangef(GLclampd z_near,
                                                    GLclampd z_far) {
  glDepthRangef(static_cast<GLclampf>(z_near), static_cast<GLclampf>(z_far));
}

base::NativeLibrary LoadLibrary(const base::FilePath& filename) {
  std::string error;
  base::NativeLibrary library = base::LoadNativeLibrary(filename, &error);
  if (!library) {
    DVLOG(1) << "Failed to load " << filename.MaybeAsASCII() << ": " << error;
    return NULL;
  }
  return library;
}

base::NativeLibrary LoadLibrary(const char* filename) {
  return LoadLibrary(base::FilePath(filename));
}

}  // namespace

void GetAllowedGLImplementations(std::vector<GLImplementation>* impls) {
  impls->push_back(kGLImplementationEGLGLES2);
}

bool InitializeGLBindings(GLImplementation implementation) {
  // Prevent reinitialization with a different implementation. Once the gpu
  // unit tests have initialized with kGLImplementationMock, we don't want to
  // later switch to another GL implementation.
  if (GetGLImplementation() != kGLImplementationNone)
    return true;

  switch (implementation) {
    case kGLImplementationEGLGLES2: {
      base::NativeLibrary gles_library = LoadLibrary("libGLESv2.so");
      if (!gles_library)
        return false;
      base::NativeLibrary egl_library = LoadLibrary("libEGL.so");
      if (!egl_library) {
        base::UnloadNativeLibrary(gles_library);
        return false;
      }

      GLGetProcAddressProc get_proc_address =
          reinterpret_cast<GLGetProcAddressProc>(
              base::GetFunctionPointerFromNativeLibrary(
                  egl_library, "eglGetProcAddress"));
      if (!get_proc_address) {
        LOG(ERROR) << "eglGetProcAddress not found.";
        base::UnloadNativeLibrary(egl_library);
        base::UnloadNativeLibrary(gles_library);
        return false;
      }

      SetGLGetProcAddressProc(get_proc_address);
      AddGLNativeLibrary(egl_library);
      AddGLNativeLibrary(gles_library);
      SetGLImplementation(kGLImplementationEGLGLES2);

      InitializeGLBindingsGL();
      InitializeGLBindingsEGL();

      // These two functions take single precision float rather than double
      // precision float parameters in GLES.
      ::gfx::g_driver_gl.fn.glClearDepthFn = MarshalClearDepthToClearDepthf;
      ::gfx::g_driver_gl.fn.glDepthRangeFn = MarshalDepthRangeToDepthRangef;
      break;
    }
    case kGLImplementationMockGL: {
      SetGLGetProcAddressProc(GetMockGLProcAddress);
      SetGLImplementation(kGLImplementationMockGL);
      InitializeGLBindingsGL();
      break;
    }
    default:
      NOTIMPLEMENTED() << "InitializeGLBindings on Android";
      return false;
  }

  return true;
}

bool InitializeGLExtensionBindings(GLImplementation implementation,
                                   GLContext* context) {
  switch (implementation) {
    case kGLImplementationEGLGLES2:
      InitializeGLExtensionBindingsGL(context);
      InitializeGLExtensionBindingsEGL(context);
      break;
    case kGLImplementationMockGL:
      InitializeGLExtensionBindingsGL(context);
      break;
    default:
      return false;
  }

  return true;
}

void InitializeDebugGLBindings() {
}

void ClearGLBindings() {
  ClearGLBindingsEGL();
  ClearGLBindingsGL();
  SetGLImplementation(kGLImplementationNone);

  UnloadGLNativeLibraries();
}

bool GetGLWindowSystemBindingInfo(GLWindowSystemBindingInfo* info) {
  switch (GetGLImplementation()) {
    case kGLImplementationEGLGLES2:
      return GetGLWindowSystemBindingInfoEGL(info);
    default:
      return false;
  }
  return false;
}<commit_msg>Add initialization of debug GL bindings on Android<commit_after>// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "base/base_paths.h"
#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/logging.h"
#include "base/native_library.h"
#include "base/path_service.h"
#include "ui/gl/gl_bindings.h"
#include "ui/gl/gl_egl_api_implementation.h"
#include "ui/gl/gl_gl_api_implementation.h"
#include "ui/gl/gl_implementation.h"
#include "ui/gl/gl_osmesa_api_implementation.h"

namespace gfx {

namespace {

void GL_BINDING_CALL MarshalClearDepthToClearDepthf(GLclampd depth) {
  glClearDepthf(static_cast<GLclampf>(depth));
}

void GL_BINDING_CALL MarshalDepthRangeToDepthRangef(GLclampd z_near,
                                                    GLclampd z_far) {
  glDepthRangef(static_cast<GLclampf>(z_near), static_cast<GLclampf>(z_far));
}

base::NativeLibrary LoadLibrary(const base::FilePath& filename) {
  std::string error;
  base::NativeLibrary library = base::LoadNativeLibrary(filename, &error);
  if (!library) {
    DVLOG(1) << "Failed to load " << filename.MaybeAsASCII() << ": " << error;
    return NULL;
  }
  return library;
}

base::NativeLibrary LoadLibrary(const char* filename) {
  return LoadLibrary(base::FilePath(filename));
}

}  // namespace

void GetAllowedGLImplementations(std::vector<GLImplementation>* impls) {
  impls->push_back(kGLImplementationEGLGLES2);
}

bool InitializeGLBindings(GLImplementation implementation) {
  // Prevent reinitialization with a different implementation. Once the gpu
  // unit tests have initialized with kGLImplementationMock, we don't want to
  // later switch to another GL implementation.
  if (GetGLImplementation() != kGLImplementationNone)
    return true;

  switch (implementation) {
    case kGLImplementationEGLGLES2: {
      base::NativeLibrary gles_library = LoadLibrary("libGLESv2.so");
      if (!gles_library)
        return false;
      base::NativeLibrary egl_library = LoadLibrary("libEGL.so");
      if (!egl_library) {
        base::UnloadNativeLibrary(gles_library);
        return false;
      }

      GLGetProcAddressProc get_proc_address =
          reinterpret_cast<GLGetProcAddressProc>(
              base::GetFunctionPointerFromNativeLibrary(
                  egl_library, "eglGetProcAddress"));
      if (!get_proc_address) {
        LOG(ERROR) << "eglGetProcAddress not found.";
        base::UnloadNativeLibrary(egl_library);
        base::UnloadNativeLibrary(gles_library);
        return false;
      }

      SetGLGetProcAddressProc(get_proc_address);
      AddGLNativeLibrary(egl_library);
      AddGLNativeLibrary(gles_library);
      SetGLImplementation(kGLImplementationEGLGLES2);

      InitializeGLBindingsGL();
      InitializeGLBindingsEGL();

      // These two functions take single precision float rather than double
      // precision float parameters in GLES.
      ::gfx::g_driver_gl.fn.glClearDepthFn = MarshalClearDepthToClearDepthf;
      ::gfx::g_driver_gl.fn.glDepthRangeFn = MarshalDepthRangeToDepthRangef;
      break;
    }
    case kGLImplementationMockGL: {
      SetGLGetProcAddressProc(GetMockGLProcAddress);
      SetGLImplementation(kGLImplementationMockGL);
      InitializeGLBindingsGL();
      break;
    }
    default:
      NOTIMPLEMENTED() << "InitializeGLBindings on Android";
      return false;
  }

  return true;
}

bool InitializeGLExtensionBindings(GLImplementation implementation,
                                   GLContext* context) {
  switch (implementation) {
    case kGLImplementationEGLGLES2:
      InitializeGLExtensionBindingsGL(context);
      InitializeGLExtensionBindingsEGL(context);
      break;
    case kGLImplementationMockGL:
      InitializeGLExtensionBindingsGL(context);
      break;
    default:
      return false;
  }

  return true;
}

void InitializeDebugGLBindings() {
  InitializeDebugGLBindingsEGL();
  InitializeDebugGLBindingsGL();
}

void ClearGLBindings() {
  ClearGLBindingsEGL();
  ClearGLBindingsGL();
  SetGLImplementation(kGLImplementationNone);

  UnloadGLNativeLibraries();
}

bool GetGLWindowSystemBindingInfo(GLWindowSystemBindingInfo* info) {
  switch (GetGLImplementation()) {
    case kGLImplementationEGLGLES2:
      return GetGLWindowSystemBindingInfoEGL(info);
    default:
      return false;
  }
  return false;
}
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