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#include "precompiled.h"
//
// 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 "libGLESv2/main.h"
#include "libGLESv2/Context.h"
#ifndef QT_OPENGL_ES_2_ANGLE_STATIC
#if !defined(ANGLE_OS_WINRT)
static DWORD currentTLS = TLS_OUT_OF_INDEXES;
#else
static __declspec(thread) void *currentTLS = 0;
#endif
namespace gl { Current *getCurrent(); }
extern "C" BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, LPVOID reserved)
{
switch (reason)
{
case DLL_PROCESS_ATTACH:
{
#if !defined(ANGLE_OS_WINRT)
currentTLS = TlsAlloc();
if (currentTLS == TLS_OUT_OF_INDEXES)
{
return FALSE;
}
#endif
}
// Fall throught to initialize index
case DLL_THREAD_ATTACH:
{
gl::Current *current = gl::getCurrent();
if (current)
{
#if !defined(ANGLE_OS_WINRT)
TlsSetValue(currentTLS, current);
#endif
current->context = NULL;
current->display = NULL;
}
}
break;
case DLL_THREAD_DETACH:
{
gl::Current *current = gl::getCurrent();
if (current)
{
#if !defined(ANGLE_OS_WINRT)
LocalFree((HLOCAL)current);
#else
HeapFree(GetProcessHeap(), HEAP_GENERATE_EXCEPTIONS, current);
currentTLS = 0;
#endif
}
}
break;
case DLL_PROCESS_DETACH:
{
gl::Current *current = gl::getCurrent();
if (current)
{
#if !defined(ANGLE_OS_WINRT)
LocalFree((HLOCAL)current);
}
TlsFree(currentTLS);
#else
HeapFree(GetProcessHeap(), HEAP_GENERATE_EXCEPTIONS, current);
currentTLS = 0;
}
#endif
}
break;
default:
break;
}
return TRUE;
}
#endif // !QT_OPENGL_ES_2_ANGLE_STATIC
namespace gl
{
Current *getCurrent()
{
#ifndef QT_OPENGL_ES_2_ANGLE_STATIC
#if !defined(ANGLE_OS_WINRT)
Current *current = (Current*)TlsGetValue(currentTLS);
if (!current)
current = (Current*)LocalAlloc(LPTR, sizeof(Current));
return current;
#else
if (!currentTLS)
currentTLS = HeapAlloc(GetProcessHeap(), HEAP_GENERATE_EXCEPTIONS|HEAP_ZERO_MEMORY, sizeof(Current));
return (Current*)currentTLS;
#endif
#else
// No precautions for thread safety taken as ANGLE is used single-threaded in Qt.
static gl::Current curr = { 0, 0 };
return &curr;
#endif
}
void makeCurrent(Context *context, egl::Display *display, egl::Surface *surface)
{
Current *current = getCurrent();
current->context = context;
current->display = display;
if (context && display && surface)
{
context->makeCurrent(surface);
}
}
Context *getContext()
{
Current *current = getCurrent();
return current->context;
}
Context *getNonLostContext()
{
Context *context = getContext();
if (context)
{
if (context->isContextLost())
{
gl::error(GL_OUT_OF_MEMORY);
return NULL;
}
else
{
return context;
}
}
return NULL;
}
egl::Display *getDisplay()
{
Current *current = getCurrent();
return current->display;
}
// Records an error code
void error(GLenum errorCode)
{
gl::Context *context = glGetCurrentContext();
if (context)
{
switch (errorCode)
{
case GL_INVALID_ENUM:
context->recordInvalidEnum();
TRACE("\t! Error generated: invalid enum\n");
break;
case GL_INVALID_VALUE:
context->recordInvalidValue();
TRACE("\t! Error generated: invalid value\n");
break;
case GL_INVALID_OPERATION:
context->recordInvalidOperation();
TRACE("\t! Error generated: invalid operation\n");
break;
case GL_OUT_OF_MEMORY:
context->recordOutOfMemory();
TRACE("\t! Error generated: out of memory\n");
break;
case GL_INVALID_FRAMEBUFFER_OPERATION:
context->recordInvalidFramebufferOperation();
TRACE("\t! Error generated: invalid framebuffer operation\n");
break;
default: UNREACHABLE();
}
}
}
}
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