From a6163888f3c56123b1db313743c6147ba498732c Mon Sep 17 00:00:00 2001 From: Yuval Adam Date: Fri, 8 Aug 2014 14:42:07 +0300 Subject: Add third_party libs --- third_party/windows/fltk-1.1.10/src/gl_start.cxx | 134 +++++++++++++++++++++++ 1 file changed, 134 insertions(+) create mode 100644 third_party/windows/fltk-1.1.10/src/gl_start.cxx (limited to 'third_party/windows/fltk-1.1.10/src/gl_start.cxx') diff --git a/third_party/windows/fltk-1.1.10/src/gl_start.cxx b/third_party/windows/fltk-1.1.10/src/gl_start.cxx new file mode 100644 index 0000000..37d4b6c --- /dev/null +++ b/third_party/windows/fltk-1.1.10/src/gl_start.cxx @@ -0,0 +1,134 @@ +// +// "$Id: gl_start.cxx 5190 2006-06-09 16:16:34Z mike $" +// +// OpenGL context routines for the Fast Light Tool Kit (FLTK). +// +// Copyright 1998-2005 by Bill Spitzak and others. +// +// This library is free software; you can redistribute it and/or +// modify it under the terms of the GNU Library General Public +// License as published by the Free Software Foundation; either +// version 2 of the License, or (at your option) any later version. +// +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// Library General Public License for more details. +// +// You should have received a copy of the GNU Library General Public +// License along with this library; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 +// USA. +// +// Please report all bugs and problems on the following page: +// +// http://www.fltk.org/str.php +// + +// You MUST use gl_visual() to select the default visual before doing +// show() of any windows. Mesa will crash if you try to use a visual +// not returned by glxChooseVisual. + +// This does not work with Fl_Double_Window's! It will try to draw +// into the front buffer. Depending on the system this will either +// crash or do nothing (when pixmaps are being used as back buffer +// and GL is being done by hardware), work correctly (when GL is done +// with software, such as Mesa), or draw into the front buffer and +// be erased when the buffers are swapped (when double buffer hardware +// is being used) + +#include +#if HAVE_GL + +#include +#include +#include +#include +#include "Fl_Gl_Choice.H" + +extern int fl_clip_state_number; // in fl_rect.cxx + +static GLContext context; +static int clip_state_number=-1; +static int pw, ph; + +#ifdef WIN32 +static Fl_Gl_Choice* gl_choice; +#endif + +#ifdef __APPLE__ +static Fl_Gl_Choice* gl_choice; +#endif + +Fl_Region XRectangleRegion(int x, int y, int w, int h); // in fl_rect.cxx + +void gl_start() { + if (!context) { +#ifdef WIN32 + if (!gl_choice) Fl::gl_visual(0); + context = fl_create_gl_context(Fl_Window::current(), gl_choice); +#elif defined(__APPLE_QD__) + // \todo Mac : We need to check the code and verify it with Apple Sample code. The 'shiny'-test should at least work with the software OpenGL emulator + context = fl_create_gl_context(Fl_Window::current(), gl_choice); +#elif defined(__APPLE_QUARTZ__) + // warning: the Quartz version should probably use Core GL (CGL) instead of AGL + context = fl_create_gl_context(Fl_Window::current(), gl_choice); +#else + context = fl_create_gl_context(fl_visual); +#endif + } + fl_set_gl_context(Fl_Window::current(), context); +#if !defined(WIN32) && !defined(__APPLE__) + glXWaitX(); +#endif + if (pw != Fl_Window::current()->w() || ph != Fl_Window::current()->h()) { + pw = Fl_Window::current()->w(); + ph = Fl_Window::current()->h(); + glLoadIdentity(); + glViewport(0, 0, pw, ph); + glOrtho(0, pw, 0, ph, -1, 1); + glDrawBuffer(GL_FRONT); + } + if (clip_state_number != fl_clip_state_number) { + clip_state_number = fl_clip_state_number; + int x, y, w, h; + if (fl_clip_box(0, 0, Fl_Window::current()->w(), Fl_Window::current()->h(), + x, y, w, h)) { + fl_clip_region(XRectangleRegion(x,y,w,h)); + glScissor(x, Fl_Window::current()->h()-(y+h), w, h); + glEnable(GL_SCISSOR_TEST); + } else { + glDisable(GL_SCISSOR_TEST); + } + } +} + +void gl_finish() { + glFlush(); +#if !defined(WIN32) && !defined(__APPLE__) + glXWaitGL(); +#endif +} + +int Fl::gl_visual(int mode, int *alist) { + Fl_Gl_Choice *c = Fl_Gl_Choice::find(mode,alist); + if (!c) return 0; +#ifdef WIN32 + gl_choice = c; +#elif defined(__APPLE_QD__) + gl_choice = c; +#elif defined(__APPLE_QUARTZ__) + // warning: the Quartz version should probably use Core GL (CGL) instead of AGL + gl_choice = c; +#else + fl_visual = c->vis; + fl_colormap = c->colormap; +#endif + return 1; +} + +#endif + +// +// End of "$Id: gl_start.cxx 5190 2006-06-09 16:16:34Z mike $". +// -- cgit v1.3.1