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//
// Copyright (c) 2002-2012 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.
//
// main.cpp: DLL entry point and management of thread-local data.
#include "libEGL/main.h"
#include "common/debug.h"
#include "common/tls.h"
static TLSIndex currentTLS = TLS_OUT_OF_INDEXES;
namespace egl
{
Current *AllocateCurrent()
{
ASSERT(currentTLS != TLS_OUT_OF_INDEXES);
if (currentTLS == TLS_OUT_OF_INDEXES)
{
return NULL;
}
Current *current = new Current();
current->error = EGL_SUCCESS;
current->API = EGL_OPENGL_ES_API;
current->display = EGL_NO_DISPLAY;
current->drawSurface = EGL_NO_SURFACE;
current->readSurface = EGL_NO_SURFACE;
if (!SetTLSValue(currentTLS, current))
{
ERR("Could not set thread local storage.");
return NULL;
}
return current;
}
void DeallocateCurrent()
{
Current *current = reinterpret_cast<Current*>(GetTLSValue(currentTLS));
SafeDelete(current);
SetTLSValue(currentTLS, NULL);
}
}
#ifndef QT_OPENGL_ES_2_ANGLE_STATIC
extern "C" BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, LPVOID reserved)
{
switch (reason)
{
case DLL_PROCESS_ATTACH:
{
#if defined(ANGLE_ENABLE_DEBUG_TRACE)
FILE *debug = fopen(TRACE_OUTPUT_FILE, "rt");
if (debug)
{
fclose(debug);
debug = fopen(TRACE_OUTPUT_FILE, "wt"); // Erase
if (debug)
{
fclose(debug);
}
}
#endif
currentTLS = CreateTLSIndex();
if (currentTLS == TLS_OUT_OF_INDEXES)
{
return FALSE;
}
#ifdef ANGLE_ENABLE_DEBUG_ANNOTATIONS
gl::InitializeDebugAnnotations();
#endif
}
// Fall through to initialize index
case DLL_THREAD_ATTACH:
{
egl::AllocateCurrent();
}
break;
case DLL_THREAD_DETACH:
{
egl::DeallocateCurrent();
}
break;
case DLL_PROCESS_DETACH:
{
egl::DeallocateCurrent();
DestroyTLSIndex(currentTLS);
#ifdef ANGLE_ENABLE_DEBUG_ANNOTATIONS
gl::UninitializeDebugAnnotations();
#endif
}
break;
default:
break;
}
return TRUE;
}
#endif // !QT_OPENGL_ES_2_ANGLE_STATIC
namespace egl
{
Current *GetCurrentData()
{
#ifndef QT_OPENGL_ES_2_ANGLE_STATIC
Current *current = reinterpret_cast<Current*>(GetTLSValue(currentTLS));
// ANGLE issue 488: when the dll is loaded after thread initialization,
// thread local storage (current) might not exist yet.
return (current ? current : AllocateCurrent());
#else
// No precautions for thread safety taken as ANGLE is used single-threaded in Qt.
static Current current = { EGL_SUCCESS, EGL_OPENGL_ES_API, EGL_NO_DISPLAY, EGL_NO_SURFACE, EGL_NO_SURFACE };
return ¤t;
#endif
}
void recordError(const Error &error)
{
Current *current = GetCurrentData();
current->error = error.getCode();
}
EGLint getCurrentError()
{
Current *current = GetCurrentData();
return current->error;
}
void setCurrentAPI(EGLenum API)
{
Current *current = GetCurrentData();
current->API = API;
}
EGLenum getCurrentAPI()
{
Current *current = GetCurrentData();
return current->API;
}
void setCurrentDisplay(EGLDisplay dpy)
{
Current *current = GetCurrentData();
current->display = dpy;
}
EGLDisplay getCurrentDisplay()
{
Current *current = GetCurrentData();
return current->display;
}
void setCurrentDrawSurface(EGLSurface surface)
{
Current *current = GetCurrentData();
current->drawSurface = surface;
}
EGLSurface getCurrentDrawSurface()
{
Current *current = GetCurrentData();
return current->drawSurface;
}
void setCurrentReadSurface(EGLSurface surface)
{
Current *current = GetCurrentData();
current->readSurface = surface;
}
EGLSurface getCurrentReadSurface()
{
Current *current = GetCurrentData();
return current->readSurface;
}
}
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