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// Copyright 2014 Dolphin Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include <string>
#include "Core/Host.h"
#include "DolphinWX/GLInterface/GLInterface.h"
#include "VideoCommon/RenderBase.h"
#include "VideoCommon/VideoConfig.h"
typedef int ( * PFNGLXSWAPINTERVALSGIPROC) (int interval);
PFNGLXSWAPINTERVALSGIPROC glXSwapIntervalSGI = nullptr;
// Show the current FPS
void cInterfaceGLX::UpdateFPSDisplay(const std::string& text)
{
XStoreName(GLWin.evdpy, GLWin.win, text.c_str());
}
void cInterfaceGLX::SwapInterval(int Interval)
{
if (glXSwapIntervalSGI)
glXSwapIntervalSGI(Interval);
else
ERROR_LOG(VIDEO, "No support for SwapInterval (framerate clamped to monitor refresh rate).");
}
void* cInterfaceGLX::GetFuncAddress(const std::string& name)
{
return (void*)glXGetProcAddress((const GLubyte*)name.c_str());
}
void cInterfaceGLX::Swap()
{
glXSwapBuffers(GLWin.dpy, GLWin.win);
}
// Create rendering window.
// Call browser: Core.cpp:EmuThread() > main.cpp:Video_Initialize()
bool cInterfaceGLX::Create(void *&window_handle)
{
int _tx, _ty, _twidth, _theight;
Host_GetRenderWindowSize(_tx, _ty, _twidth, _theight);
// Control window size and picture scaling
s_backbuffer_width = _twidth;
s_backbuffer_height = _theight;
int glxMajorVersion, glxMinorVersion;
// attributes for a single buffered visual in RGBA format with at least
// 8 bits per color
int attrListSgl[] = {GLX_RGBA, GLX_RED_SIZE, 8,
GLX_GREEN_SIZE, 8,
GLX_BLUE_SIZE, 8,
None};
// attributes for a double buffered visual in RGBA format with at least
// 8 bits per color
int attrListDbl[] = {GLX_RGBA, GLX_DOUBLEBUFFER,
GLX_RED_SIZE, 8,
GLX_GREEN_SIZE, 8,
GLX_BLUE_SIZE, 8,
None };
int attrListDefault[] = {
GLX_RGBA,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_DOUBLEBUFFER,
None };
GLWin.dpy = XOpenDisplay(nullptr);
GLWin.evdpy = XOpenDisplay(nullptr);
GLWin.parent = (Window)window_handle;
GLWin.screen = DefaultScreen(GLWin.dpy);
if (GLWin.parent == 0)
GLWin.parent = RootWindow(GLWin.dpy, GLWin.screen);
glXQueryVersion(GLWin.dpy, &glxMajorVersion, &glxMinorVersion);
NOTICE_LOG(VIDEO, "glX-Version %d.%d", glxMajorVersion, glxMinorVersion);
// Get an appropriate visual
GLWin.vi = glXChooseVisual(GLWin.dpy, GLWin.screen, attrListDbl);
if (GLWin.vi == nullptr)
{
GLWin.vi = glXChooseVisual(GLWin.dpy, GLWin.screen, attrListSgl);
if (GLWin.vi != nullptr)
{
ERROR_LOG(VIDEO, "Only single buffered visual!");
}
else
{
GLWin.vi = glXChooseVisual(GLWin.dpy, GLWin.screen, attrListDefault);
if (GLWin.vi == nullptr)
{
ERROR_LOG(VIDEO, "Could not choose visual (glXChooseVisual)");
return false;
}
}
}
else
NOTICE_LOG(VIDEO, "Got double buffered visual!");
// Create a GLX context.
GLWin.ctx = glXCreateContext(GLWin.dpy, GLWin.vi, nullptr, GL_TRUE);
if (!GLWin.ctx)
{
PanicAlert("Unable to create GLX context.");
return false;
}
GLWin.x = _tx;
GLWin.y = _ty;
GLWin.width = _twidth;
GLWin.height = _theight;
XWindow.CreateXWindow();
window_handle = (void *)GLWin.win;
return true;
}
bool cInterfaceGLX::MakeCurrent()
{
// connect the glx-context to the window
#if defined(HAVE_WX) && (HAVE_WX)
Host_GetRenderWindowSize(GLWin.x, GLWin.y,
(int&)GLWin.width, (int&)GLWin.height);
XMoveResizeWindow(GLWin.evdpy, GLWin.win, GLWin.x, GLWin.y,
GLWin.width, GLWin.height);
#endif
bool success = glXMakeCurrent(GLWin.dpy, GLWin.win, GLWin.ctx);
if (success)
{
// load this function based on the current bound context
glXSwapIntervalSGI = (PFNGLXSWAPINTERVALSGIPROC)GLInterface->GetFuncAddress("glXSwapIntervalSGI");
}
return success;
}
bool cInterfaceGLX::ClearCurrent()
{
return glXMakeCurrent(GLWin.dpy, None, nullptr);
}
// Close backend
void cInterfaceGLX::Shutdown()
{
XWindow.DestroyXWindow();
if (GLWin.ctx)
{
glXDestroyContext(GLWin.dpy, GLWin.ctx);
XCloseDisplay(GLWin.dpy);
XCloseDisplay(GLWin.evdpy);
GLWin.ctx = nullptr;
}
}
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