This source file includes following definitions.
- MarshalClearDepthToClearDepthf
- MarshalDepthRangeToDepthRangef
- GetAllowedGLImplementations
- InitializeStaticGLBindings
- InitializeDynamicGLBindings
- InitializeDebugGLBindings
- ClearGLBindings
- GetGLWindowSystemBindingInfo
#include <vector>
#include "base/command_line.h"
#include "base/logging.h"
#include "base/threading/thread_restrictions.h"
#include "ui/gl/gl_bindings.h"
#include "ui/gl/gl_context_stub_with_extensions.h"
#include "ui/gl/gl_egl_api_implementation.h"
#include "ui/gl/gl_gl_api_implementation.h"
#include "ui/gl/gl_glx_api_implementation.h"
#include "ui/gl/gl_implementation.h"
#include "ui/gl/gl_implementation_osmesa.h"
#include "ui/gl/gl_osmesa_api_implementation.h"
#include "ui/gl/gl_switches.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));
}
#if defined(OS_OPENBSD)
const char kGLLibraryName[] = "libGL.so";
#else
const char kGLLibraryName[] = "libGL.so.1";
#endif
const char kGLESv2LibraryName[] = "libGLESv2.so.2";
const char kEGLLibraryName[] = "libEGL.so.1";
}
void GetAllowedGLImplementations(std::vector<GLImplementation>* impls) {
impls->push_back(kGLImplementationDesktopGL);
impls->push_back(kGLImplementationEGLGLES2);
impls->push_back(kGLImplementationOSMesaGL);
}
bool InitializeStaticGLBindings(GLImplementation implementation) {
DCHECK_EQ(kGLImplementationNone, GetGLImplementation());
base::ThreadRestrictions::ScopedAllowIO allow_io;
switch (implementation) {
case kGLImplementationOSMesaGL:
return InitializeStaticGLBindingsOSMesaGL();
case kGLImplementationDesktopGL: {
base::NativeLibrary library = NULL;
const CommandLine* command_line = CommandLine::ForCurrentProcess();
if (command_line->HasSwitch(switches::kTestGLLib))
library = LoadLibrary(command_line->GetSwitchValueASCII(
switches::kTestGLLib).c_str());
if (!library) {
library = LoadLibrary(kGLLibraryName);
}
if (!library) {
LOG(ERROR) << "Failed to load " << kGLLibraryName << ".";
return false;
}
GLGetProcAddressProc get_proc_address =
reinterpret_cast<GLGetProcAddressProc>(
base::GetFunctionPointerFromNativeLibrary(
library, "glXGetProcAddress"));
if (!get_proc_address) {
LOG(ERROR) << "glxGetProcAddress not found.";
base::UnloadNativeLibrary(library);
return false;
}
SetGLGetProcAddressProc(get_proc_address);
AddGLNativeLibrary(library);
SetGLImplementation(kGLImplementationDesktopGL);
InitializeStaticGLBindingsGL();
InitializeStaticGLBindingsGLX();
break;
}
case kGLImplementationEGLGLES2: {
base::NativeLibrary gles_library = LoadLibrary(kGLESv2LibraryName);
if (!gles_library) {
LOG(ERROR) << "Failed to load " << kGLESv2LibraryName << ".";
return false;
}
base::NativeLibrary egl_library = LoadLibrary(kEGLLibraryName);
if (!egl_library) {
LOG(ERROR) << "Failed to load " << kEGLLibraryName << ".";
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);
InitializeStaticGLBindingsGL();
InitializeStaticGLBindingsEGL();
::gfx::g_driver_gl.fn.glClearDepthFn = MarshalClearDepthToClearDepthf;
::gfx::g_driver_gl.fn.glDepthRangeFn = MarshalDepthRangeToDepthRangef;
break;
}
case kGLImplementationMockGL: {
SetGLImplementation(kGLImplementationMockGL);
InitializeStaticGLBindingsGL();
break;
}
default:
return false;
}
return true;
}
bool InitializeDynamicGLBindings(GLImplementation implementation,
GLContext* context) {
switch (implementation) {
case kGLImplementationOSMesaGL:
InitializeDynamicGLBindingsGL(context);
InitializeDynamicGLBindingsOSMESA(context);
break;
case kGLImplementationDesktopGL:
InitializeDynamicGLBindingsGL(context);
InitializeDynamicGLBindingsGLX(context);
break;
case kGLImplementationEGLGLES2:
InitializeDynamicGLBindingsGL(context);
InitializeDynamicGLBindingsEGL(context);
break;
case kGLImplementationMockGL:
if (!context) {
scoped_refptr<GLContextStubWithExtensions> mock_context(
new GLContextStubWithExtensions());
mock_context->SetGLVersionString("3.0");
InitializeDynamicGLBindingsGL(mock_context.get());
} else
InitializeDynamicGLBindingsGL(context);
break;
default:
return false;
}
return true;
}
void InitializeDebugGLBindings() {
InitializeDebugGLBindingsEGL();
InitializeDebugGLBindingsGL();
InitializeDebugGLBindingsGLX();
InitializeDebugGLBindingsOSMESA();
}
void ClearGLBindings() {
ClearGLBindingsEGL();
ClearGLBindingsGL();
ClearGLBindingsGLX();
ClearGLBindingsOSMESA();
SetGLImplementation(kGLImplementationNone);
UnloadGLNativeLibraries();
}
bool GetGLWindowSystemBindingInfo(GLWindowSystemBindingInfo* info) {
switch (GetGLImplementation()) {
case kGLImplementationDesktopGL:
return GetGLWindowSystemBindingInfoGLX(info);
case kGLImplementationEGLGLES2:
return GetGLWindowSystemBindingInfoEGL(info);
default:
return false;
}
return false;
}
}