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Merge pull request #1733 from degasus/glx 

GLX: try to get an OpenGL 3.3 core context
This commit is contained in:
Markus Wick 2014-12-26 13:31:41 +01:00
parent a86865d1c4 e6137407ba
commit 7764a5ed9d
2 changed files with 87 additions and 55 deletions
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141
Source/Core/VideoBackends/OGL/GLInterface/GLX.cpp
View File

@ -9,9 +9,22 @@
#include "VideoCommon/RenderBase.h"
#include "VideoCommon/VideoConfig.h"
#define GLX_CONTEXT_MAJOR_VERSION_ARB 0x2091
#define GLX_CONTEXT_MINOR_VERSION_ARB 0x2092
typedef GLXContext (*PFNGLXCREATECONTEXTATTRIBSPROC)(Display*, GLXFBConfig, GLXContext, Bool, const int*);
typedef int ( * PFNGLXSWAPINTERVALSGIPROC) (int interval);
static PFNGLXCREATECONTEXTATTRIBSPROC glXCreateContextAttribs = nullptr;
static PFNGLXSWAPINTERVALSGIPROC glXSwapIntervalSGI = nullptr;
static bool s_glxError;
static int ctxErrorHandler(Display *dpy, XErrorEvent *ev)
{
s_glxError = true;
return 0;
}
void cInterfaceGLX::SwapInterval(int Interval)
{
if (glXSwapIntervalSGI)
@ -33,69 +46,87 @@ void cInterfaceGLX::Swap()
// Call browser: Core.cpp:EmuThread() > main.cpp:Video_Initialize()
bool cInterfaceGLX::Create(void *window_handle)
{
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 };
dpy = XOpenDisplay(nullptr);
int screen = DefaultScreen(dpy);
// checking glx version
int glxMajorVersion, glxMinorVersion;
glXQueryVersion(dpy, &glxMajorVersion, &glxMinorVersion);
NOTICE_LOG(VIDEO, "glX-Version %d.%d", glxMajorVersion, glxMinorVersion);
// Get an appropriate visual
vi = glXChooseVisual(dpy, screen, attrListDbl);
if (vi == nullptr)
if (glxMajorVersion < 1 || (glxMajorVersion == 1 && glxMinorVersion < 4))
{
vi = glXChooseVisual(dpy, screen, attrListSgl);
if (vi != nullptr)
{
ERROR_LOG(VIDEO, "Only single buffered visual!");
}
else
{
vi = glXChooseVisual(dpy, screen, attrListDefault);
if (vi == nullptr)
{
ERROR_LOG(VIDEO, "Could not choose visual (glXChooseVisual)");
return false;
}
}
}
else
{
NOTICE_LOG(VIDEO, "Got double buffered visual!");
}
// Create a GLX context.
ctx = glXCreateContext(dpy, vi, nullptr, GL_TRUE);
if (!ctx)
{
PanicAlert("Unable to create GLX context.");
ERROR_LOG(VIDEO, "glX-Version %d.%d detected, but need at least 1.4",
glxMajorVersion, glxMinorVersion);
return false;
}
// loading core context creation function
glXCreateContextAttribs = (PFNGLXCREATECONTEXTATTRIBSPROC)GetFuncAddress("glXCreateContextAttribsARB");
if (!glXCreateContextAttribs)
{
ERROR_LOG(VIDEO, "glXCreateContextAttribsARB not found, do you support GLX_ARB_create_context?");
return false;
}
// choosing framebuffer
int visual_attribs[] =
{
GLX_X_RENDERABLE , True,
GLX_DRAWABLE_TYPE , GLX_WINDOW_BIT,
GLX_X_VISUAL_TYPE , GLX_TRUE_COLOR,
GLX_RED_SIZE , 8,
GLX_GREEN_SIZE , 8,
GLX_BLUE_SIZE , 8,
GLX_DEPTH_SIZE , 0,
GLX_STENCIL_SIZE , 0,
GLX_DOUBLEBUFFER , True,
None
};
int fbcount = 0;
GLXFBConfig* fbc = glXChooseFBConfig(dpy, screen, visual_attribs, &fbcount);
if (!fbc || !fbcount)
{
ERROR_LOG(VIDEO, "Failed to retrieve a framebuffer config");
return false;
}
fbconfig = *fbc;
XFree(fbc);
// Get an appropriate visual
vi = glXGetVisualFromFBConfig(dpy, fbconfig);
// Create a GLX context.
// We try to get a 3.3 core profile, else we try it with anything we get.
int context_attribs[] =
{
GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
GLX_CONTEXT_MINOR_VERSION_ARB, 3,
GLX_CONTEXT_PROFILE_MASK_ARB, GLX_CONTEXT_CORE_PROFILE_BIT_ARB,
GLX_CONTEXT_FLAGS_ARB, GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB,
None
};
s_glxError = false;
XErrorHandler oldHandler = XSetErrorHandler(&ctxErrorHandler);
ctx = glXCreateContextAttribs(dpy, fbconfig, 0, True, context_attribs);
XSync(dpy, False);
if (!ctx || s_glxError)
{
int context_attribs_legacy[] =
{
GLX_CONTEXT_MAJOR_VERSION_ARB, 1,
GLX_CONTEXT_MINOR_VERSION_ARB, 0,
None
};
s_glxError = false;
ctx = glXCreateContextAttribs(dpy, fbconfig, 0, True, context_attribs_legacy);
XSync(dpy, False);
if (!ctx || s_glxError)
{
ERROR_LOG(VIDEO, "Unable to create GL context.");
return false;
}
}
XSetErrorHandler(oldHandler);
XWindow.Initialize(dpy);
Window parent = (Window)window_handle;

1
Source/Core/VideoBackends/OGL/GLInterface/GLX.h
View File

@ -18,6 +18,7 @@ private:
Window win;
GLXContext ctx;
XVisualInfo *vi;
GLXFBConfig fbconfig;
public:
friend class cX11Window;
void SwapInterval(int Interval) override;