diff options
Diffstat (limited to 'progs')
| -rw-r--r-- | progs/xdemos/wincopy.c | 48 |
1 files changed, 41 insertions, 7 deletions
diff --git a/progs/xdemos/wincopy.c b/progs/xdemos/wincopy.c index 39d471a5e54..3093553d5de 100644 --- a/progs/xdemos/wincopy.c +++ b/progs/xdemos/wincopy.c @@ -1,9 +1,8 @@ - /* * Mesa 3-D graphics library - * Version: 3.3 + * Version: 5.1 * - * Copyright (C) 1999 Brian Paul All Rights Reserved. + * Copyright (C) 1999-2003 Brian Paul All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), @@ -36,6 +35,7 @@ #include <GL/gl.h> #include <GL/glx.h> +#include <X11/keysym.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> @@ -52,6 +52,8 @@ static GLint Width[2], Height[2]; static GLfloat Angle = 0.0; +static GLboolean DrawFront = GL_FALSE; + static Window @@ -104,6 +106,15 @@ Redraw(void) Angle += 1.0; + if (DrawFront) { + glDrawBuffer(GL_FRONT); + glReadBuffer(GL_FRONT); + } + else { + glDrawBuffer(GL_BACK); + glReadBuffer(GL_BACK); + } + glViewport(0, 0, Width[0], Height[0]); glMatrixMode(GL_PROJECTION); glLoadIdentity(); @@ -126,7 +137,10 @@ Redraw(void) glEnd(); glPopMatrix(); - glXSwapBuffers(Dpy, Win[0]); + if (DrawFront) + glFinish(); + else + glXSwapBuffers(Dpy, Win[0]); /* copy image from window 0 to window 1 */ @@ -146,13 +160,16 @@ Redraw(void) glRasterPos2f(-1, -1); /* copy the image between windows */ - glDrawBuffer(GL_FRONT); glCopyPixels(0, 0, Width[0], Height[0], GL_COLOR); - glDrawBuffer(GL_BACK); glPopMatrix(); glMatrixMode(GL_MODELVIEW); glPopMatrix(); + + if (DrawFront) + glFinish(); + else + glXSwapBuffers(Dpy, Win[1]); } @@ -192,7 +209,22 @@ EventLoop(void) Resize(event.xany.window, event.xconfigure.width, event.xconfigure.height); break; case KeyPress: - return; + { + char buf[100]; + KeySym keySym; + XComposeStatus stat; + XLookupString(&event.xkey, buf, sizeof(buf), &keySym, &stat); + if (keySym == XK_Escape) { + /* exit */ + return; + } + else if (buf[0] == 'f') { + DrawFront = !DrawFront; + printf("Drawing to %s buffer\n", + DrawFront ? "GL_FRONT" : "GL_BACK"); + } + } + break; default: /*no-op*/ ; } @@ -243,6 +275,8 @@ Init(void) Win[1] = CreateWindow(Dpy, ScrNum, visinfo, 350, 0, 300, 300, "dest window"); + printf("Press Esc to exit\n"); + printf("Press 'f' to toggle front/back buffer drawing\n"); } |