Combine the vsync setting functions into one common extension function. Also...

Combine the vsync setting functions into one common extension function. Also added support for more swap_interval methods on X11 systems.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@3638 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/COpenGLDriver.cpp

@@ -440,14 +440,7 @@ bool COpenGLDriver::initDriver(irr::SIrrlichtCreationParameters params, CIrrDevi
 
 	genericDriverInit(params.WindowSize, params.Stencilbuffer);
 
-#ifdef WGL_EXT_swap_control
-	PFNWGLSWAPINTERVALEXTPROC wglSwapIntervalEXT;
-	// vsync extension
-	wglSwapIntervalEXT = (PFNWGLSWAPINTERVALEXTPROC)wglGetProcAddress("wglSwapIntervalEXT");
-	// set vsync
-	if (wglSwapIntervalEXT)
-		wglSwapIntervalEXT(params.Vsync ? 1 : 0);
-#endif
+	extGlSwapInterval(params.Vsync ? 1 : 0);
 	return true;
 }
 
@@ -542,16 +535,7 @@ bool COpenGLDriver::initDriver(irr::SIrrlichtCreationParameters params, CIrrDevi
 	genericDriverInit(params.WindowSize, params.Stencilbuffer);
 
 	// set vsync
-	//TODO: Check GLX_EXT_swap_control and GLX_MESA_swap_control
-#ifdef GLX_SGI_swap_control
-#ifdef _IRR_OPENGL_USE_EXTPOINTER_
-	if (params.Vsync && glxSwapIntervalSGI)
-		glxSwapIntervalSGI(1);
-#else
-	if (params.Vsync)
-		glXSwapIntervalSGI(1);
-#endif
-#endif
+	extGlSwapInterval(params.Vsync ? 1 : 0);
 	return true;
 }
 

source/Irrlicht/COpenGLExtensionHandler.cpp

@@ -51,7 +51,16 @@ COpenGLExtensionHandler::COpenGLExtensionHandler() :
 	pGlStencilFuncSeparateATI(0), pGlStencilOpSeparateATI(0),
 	pGlCompressedTexImage2D(0),
 #if defined(GLX_SGI_swap_control)
-	glxSwapIntervalSGI(0),
+	pGlxSwapIntervalSGI(0),
+#endif
+#if defined(GLX_EXT_swap_control)
+	pGlxSwapIntervalEXT(0),
+#endif
+#if defined(GLX_MESA_swap_control)
+	pGlxSwapIntervalMESA(0),
+#endif
+#if defined(WGL_EXT_swap_control)
+	pWglSwapIntervalEXT(0),
 #endif
 	pGlBindFramebufferEXT(0), pGlDeleteFramebuffersEXT(0), pGlGenFramebuffersEXT(0),
 	pGlCheckFramebufferStatusEXT(0), pGlFramebufferTexture2DEXT(0),
@@ -258,6 +267,10 @@ void COpenGLExtensionHandler::initExtensions(bool stencilBuffer)
 	pGlEndOcclusionQueryNV = (PFNGLENDOCCLUSIONQUERYNVPROC) wglGetProcAddress("glEndOcclusionQueryNV");
 	pGlGetOcclusionQueryivNV = (PFNGLGETOCCLUSIONQUERYIVNVPROC) wglGetProcAddress("glGetOcclusionQueryivNV");
 	pGlGetOcclusionQueryuivNV = (PFNGLGETOCCLUSIONQUERYUIVNVPROC) wglGetProcAddress("glGetOcclusionQueryuivNV");
+	#if defined(WGL_EXT_swap_control) && !defined(_IRR_COMPILE_WITH_SDL_DEVICE_)
+		// get vsync extension
+		pWglSwapIntervalEXT = (PFNWGLSWAPINTERVALEXTPROC) wglGetProcAddress("wglSwapIntervalEXT");
+	#endif
 
 #elif defined(_IRR_COMPILE_WITH_X11_DEVICE_) || defined (_IRR_COMPILE_WITH_SDL_DEVICE_)
 	#ifdef _IRR_OPENGL_USE_EXTPOINTER_
@@ -458,9 +471,15 @@ void COpenGLExtensionHandler::initExtensions(bool stencilBuffer)
 	pGlCompressedTexImage2D = (PFNGLCOMPRESSEDTEXIMAGE2DPROC)
 		IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glCompressedTexImage2D"));
 
+	// get vsync extension
 	#if defined(GLX_SGI_swap_control) && !defined(_IRR_COMPILE_WITH_SDL_DEVICE_)
-		// get vsync extension
-		glxSwapIntervalSGI = (PFNGLXSWAPINTERVALSGIPROC)IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glXSwapIntervalSGI"));
+		pGlxSwapIntervalSGI = (PFNGLXSWAPINTERVALSGIPROC)IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glXSwapIntervalSGI"));
+	#endif
+	#if defined(GLX_EXT_swap_control) && !defined(_IRR_COMPILE_WITH_SDL_DEVICE_)
+		pGlxSwapIntervalEXT = (PFNGLXSWAPINTERVALEXTPROC)IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glXSwapIntervalEXT"));
+	#endif
+	#if defined(GLX_MESA_swap_control) && !defined(_IRR_COMPILE_WITH_SDL_DEVICE_)
+		pGlxSwapIntervalMESA = (PFNGLXSWAPINTERVALMESAPROC)IRR_OGL_LOAD_EXTENSION(reinterpret_cast<const GLubyte*>("glXSwapIntervalMESA"));
 	#endif
 
 	// FrameBufferObjects

source/Irrlicht/COpenGLExtensionHandler.h

@@ -1046,6 +1046,9 @@ class COpenGLExtensionHandler
 	void extGlGetQueryObjectiv(GLuint id, GLenum pname, GLint *params);
 	void extGlGetQueryObjectuiv(GLuint id, GLenum pname, GLuint *params);
 
+	// generic vsync setting method for several extensions
+	void extGlSwapInterval(int interval);
+
 	// the global feature array
 	bool FeatureAvailable[IRR_OpenGL_Feature_Count];
 
@@ -1106,9 +1109,6 @@ class COpenGLExtensionHandler
 		PFNGLSTENCILFUNCSEPARATEATIPROC pGlStencilFuncSeparateATI;
 		PFNGLSTENCILOPSEPARATEATIPROC pGlStencilOpSeparateATI;
 		PFNGLCOMPRESSEDTEXIMAGE2DPROC pGlCompressedTexImage2D;
-		#if defined(_IRR_LINUX_PLATFORM_) && defined(GLX_SGI_swap_control)
-		PFNGLXSWAPINTERVALSGIPROC glxSwapIntervalSGI;
-		#endif
 		PFNGLBINDFRAMEBUFFEREXTPROC pGlBindFramebufferEXT;
 		PFNGLDELETEFRAMEBUFFERSEXTPROC pGlDeleteFramebuffersEXT;
 		PFNGLGENFRAMEBUFFERSEXTPROC pGlGenFramebuffersEXT;
@@ -1157,6 +1157,18 @@ class COpenGLExtensionHandler
 		PFNGLENDOCCLUSIONQUERYNVPROC pGlEndOcclusionQueryNV;
 		PFNGLGETOCCLUSIONQUERYIVNVPROC pGlGetOcclusionQueryivNV;
 		PFNGLGETOCCLUSIONQUERYUIVNVPROC pGlGetOcclusionQueryuivNV;
+		#if defined(WGL_EXT_swap_control)
+		PFNWGLSWAPINTERVALEXTPROC pWglSwapIntervalEXT;
+		#endif
+		#if defined(GLX_SGI_swap_control)
+		PFNGLXSWAPINTERVALSGIPROC pGlxSwapIntervalSGI;
+		#endif
+		#if defined(GLX_EXT_swap_control)
+		PFNGLXSWAPINTERVALEXTPROC pGlxSwapIntervalEXT;
+		#endif
+		#if defined(GLX_MESA_swap_control)
+		PFNGLXSWAPINTERVALMESAPROC pGlxSwapIntervalMESA;
+		#endif
 	#endif
 };
 
@@ -2302,6 +2314,47 @@ inline void COpenGLExtensionHandler::extGlGetQueryObjectuiv(GLuint id, GLenum pn
 #endif
 }
 
+inline void COpenGLExtensionHandler::extGlSwapInterval(int interval)
+{
+	// we have wglext, so try to use that
+#if defined(_IRR_WINDOWS_API_) && defined(_IRR_COMPILE_WITH_WINDOWS_DEVICE_)
+#ifdef WGL_EXT_swap_control
+	if (pWglSwapIntervalEXT)
+		pWglSwapIntervalEXT(interval);
+#endif
+#endif
+#ifdef _IRR_COMPILE_WITH_X11_DEVICE_
+	//TODO: Check GLX_EXT_swap_control and GLX_MESA_swap_control
+#ifdef GLX_SGI_swap_control
+	// does not work with interval==0
+#ifdef _IRR_OPENGL_USE_EXTPOINTER_
+	if (interval && pGlxSwapIntervalSGI)
+		pGlxSwapIntervalSGI(interval);
+#else
+	if (interval)
+		glXSwapIntervalSGI(interval);
+#endif
+#elif defined(GLX_EXT_swap_control)
+#ifdef _IRR_OPENGL_USE_EXTPOINTER_
+	Display *dpy = glXGetCurrentDisplay();
+	GLXDrawable drawable = glXGetCurrentDrawable();
+
+	if (pGlxSwapIntervalEXT)
+		pGlxSwapIntervalEXT(dpy, drawable, interval);
+#else
+	pGlXSwapIntervalEXT(dpy, drawable, interval);
+#endif
+#elif defined(GLX_MESA_swap_control)
+#ifdef _IRR_OPENGL_USE_EXTPOINTER_
+	if (pGlxSwapIntervalMESA)
+		pGlxSwapIntervalMESA(interval);
+#else
+	pGlXSwapIntervalMESA(interval);
+#endif
+#endif
+#endif
+}
+
 
 }
 }