diff options
Diffstat (limited to 'src/glut/os2/glut_vidresize.cpp')
| -rw-r--r-- | src/glut/os2/glut_vidresize.cpp | 464 |
1 files changed, 232 insertions, 232 deletions
diff --git a/src/glut/os2/glut_vidresize.cpp b/src/glut/os2/glut_vidresize.cpp index f9d345dcf5..9f9b6eef58 100644 --- a/src/glut/os2/glut_vidresize.cpp +++ b/src/glut/os2/glut_vidresize.cpp @@ -1,232 +1,232 @@ -
-/* Copyright (c) Mark J. Kilgard, 1996. */
-
-/* This program is freely distributable without licensing fees
- and is provided without guarantee or warrantee expressed or
- implied. This program is -not- in the public domain. */
-
-#include <stdlib.h>
-
-#ifdef __sgi
-#include <dlfcn.h>
-#endif
-
-#include "glutint.h"
-
-/* Grumble. The IRIX 6.3 and early IRIX 6.4 OpenGL headers
- support the video resize extension, but failed to define
- GLX_SGIX_video_resize. */
-#if 0
-#ifdef GLX_SYNC_FRAME_SGIX
-#define GLX_SGIX_video_resize 1
-#endif
-#endif
-
-#if defined(GLX_VERSION_1_1) && defined(GLX_SGIX_video_resize)
-static int canVideoResize = -1;
-static int videoResizeChannel;
-#else
-static int canVideoResize = 0;
-#endif
-static int videoResizeInUse = 0;
-static int dx = -1, dy = -1, dw = -1, dh = -1;
-
-/* XXX Note that IRIX 6.2, 6.3, and some 6.4 versions have a
- bug where programs seg-fault when they attempt video
- resizing from an indirect OpenGL context (either local or
- over a network). */
-
-#if defined(GLX_VERSION_1_1) && defined(GLX_SGIX_video_resize)
-
-static volatile int errorCaught;
-
-/* ARGSUSED */
-static int
-catchXSGIvcErrors(Display * dpy, XErrorEvent * event)
-{
- errorCaught = 1;
- return 0;
-}
-#endif
-
-/* CENTRY */
-
-int GLUTAPIENTRY
-glutVideoResizeGet(GLenum param)
-{
-#if defined(GLX_VERSION_1_1) && defined(GLX_SGIX_video_resize)
- if (canVideoResize < 0) {
- canVideoResize = __glutIsSupportedByGLX("GLX_SGIX_video_resize");
- if (canVideoResize) {
-#if defined(__sgi) && __sgi
- /* This is a hack because IRIX 6.2, 6.3, and some 6.4
- versions were released with GLX_SGIX_video_resize
- being advertised by the X server though the video
- resize extension is not actually supported. We try to
- determine if the libGL.so we are using actually has a
- video resize entrypoint before we try to use the
- feature. */
- void (*func) (void);
- void *glxDso = dlopen("libGL.so", RTLD_LAZY);
-
- func = (void (*)(void)) dlsym(glxDso, "glXQueryChannelDeltasSGIX");
- if (!func) {
- canVideoResize = 0;
- } else
-#endif
- {
- char *channelString;
- int (*handler) (Display *, XErrorEvent *);
-
- channelString = getenv("GLUT_VIDEO_RESIZE_CHANNEL");
- videoResizeChannel = channelString ? atoi(channelString) : 0;
-
- /* Work around another annoying problem with SGI's
- GLX_SGIX_video_resize implementation. Early IRIX
- 6.4 OpenGL's advertise the extension and have the
- video resize API, but an XSGIvc X protocol errors
- result trying to use the API. Set up an error
- handler to intercept what would otherwise be a fatal
- error. If an error was recieved, do not report that
- video resize is possible. */
- handler = XSetErrorHandler(catchXSGIvcErrors);
-
- errorCaught = 0;
-
-#if defined(GLX_GLXEXT_PROTOTYPES)
-#endif
-
- __glut_glXQueryChannelDeltasSGIX(__glutDisplay, __glutScreen,
- videoResizeChannel, &dx, &dy, &dw, &dh);
-
- /* glXQueryChannelDeltasSGIX is an inherent X server
- round-trip so we know we will have gotten either the
- correct reply or and error by this time. */
- XSetErrorHandler(handler);
-
- /* Still yet another work around. In IRIX 6.4 betas,
- glXQueryChannelDeltasSGIX will return as if it
- succeeded, but the values are filled with junk.
- Watch to make sure the delta variables really make
- sense. */
- if (errorCaught ||
- dx < 0 || dy < 0 || dw < 0 || dh < 0 ||
- dx > 2048 || dy > 2048 || dw > 2048 || dh > 2048) {
- canVideoResize = 0;
- }
- }
- }
- }
-#endif /* GLX_SGIX_video_resize */
-
- switch (param) {
- case GLUT_VIDEO_RESIZE_POSSIBLE:
- return canVideoResize;
- case GLUT_VIDEO_RESIZE_IN_USE:
- return videoResizeInUse;
- case GLUT_VIDEO_RESIZE_X_DELTA:
- return dx;
- case GLUT_VIDEO_RESIZE_Y_DELTA:
- return dy;
- case GLUT_VIDEO_RESIZE_WIDTH_DELTA:
- return dw;
- case GLUT_VIDEO_RESIZE_HEIGHT_DELTA:
- return dh;
- case GLUT_VIDEO_RESIZE_X:
- case GLUT_VIDEO_RESIZE_Y:
- case GLUT_VIDEO_RESIZE_WIDTH:
- case GLUT_VIDEO_RESIZE_HEIGHT:
-#if defined(GLX_VERSION_1_1) && defined(GLX_SGIX_video_resize)
- if (videoResizeInUse) {
- int x, y, width, height;
-
- __glut_glXQueryChannelRectSGIX(__glutDisplay, __glutScreen,
- videoResizeChannel, &x, &y, &width, &height);
- switch (param) {
- case GLUT_VIDEO_RESIZE_X:
- return x;
- case GLUT_VIDEO_RESIZE_Y:
- return y;
- case GLUT_VIDEO_RESIZE_WIDTH:
- return width;
- case GLUT_VIDEO_RESIZE_HEIGHT:
- return height;
- }
- }
-#endif
- return -1;
- default:
- __glutWarning("invalid glutVideoResizeGet parameter: %d", param);
- return -1;
- }
-}
-
-void GLUTAPIENTRY
-glutSetupVideoResizing(void)
-{
-#if defined(GLX_VERSION_1_1) && defined(GLX_SGIX_video_resize)
- if (glutVideoResizeGet(GLUT_VIDEO_RESIZE_POSSIBLE)) {
- __glut_glXBindChannelToWindowSGIX(__glutDisplay, __glutScreen,
- videoResizeChannel, __glutCurrentWindow->win);
- videoResizeInUse = 1;
- } else
-#endif
- __glutFatalError("glutEstablishVideoResizing: video resizing not possible.\n");
-}
-
-void GLUTAPIENTRY
-glutStopVideoResizing(void)
-{
-#if defined(GLX_VERSION_1_1) && defined(GLX_SGIX_video_resize)
- if (glutVideoResizeGet(GLUT_VIDEO_RESIZE_POSSIBLE)) {
- if (videoResizeInUse) {
- __glut_glXBindChannelToWindowSGIX(__glutDisplay, __glutScreen,
- videoResizeChannel, None);
- videoResizeInUse = 0;
- }
- }
-#endif
-}
-
-/* ARGSUSED */
-void GLUTAPIENTRY
-glutVideoResize(int x, int y, int width, int height)
-{
-#if defined(GLX_VERSION_1_1) && defined(GLX_SGIX_video_resize)
- if (videoResizeInUse) {
-#ifdef GLX_SYNC_SWAP_SGIX
- /* glXChannelRectSyncSGIX introduced in a patch to IRIX
- 6.2; the original unpatched IRIX 6.2 behavior is always
- GLX_SYNC_SWAP_SGIX. */
- __glut_glXChannelRectSyncSGIX(__glutDisplay, __glutScreen,
- videoResizeChannel, GLX_SYNC_SWAP_SGIX);
-#endif
- __glut_glXChannelRectSGIX(__glutDisplay, __glutScreen,
- videoResizeChannel, x, y, width, height);
- }
-#endif
-}
-
-/* ARGSUSED */
-void GLUTAPIENTRY
-glutVideoPan(int x, int y, int width, int height)
-{
-#if defined(GLX_VERSION_1_1) && defined(GLX_SGIX_video_resize)
- if (videoResizeInUse) {
-#ifdef GLX_SYNC_FRAME_SGIX
- /* glXChannelRectSyncSGIX introduced in a patch to IRIX
- 6.2; the original unpatched IRIX 6.2 behavior is always
- GLX_SYNC_SWAP_SGIX. We just ignore that we cannot
- accomplish GLX_SYNC_FRAME_SGIX on IRIX unpatched 6.2;
- this means you'd need a glutSwapBuffers to actually
- realize the video resize. */
- __glut_glXChannelRectSyncSGIX(__glutDisplay, __glutScreen,
- videoResizeChannel, GLX_SYNC_FRAME_SGIX);
-#endif
- __glut_glXChannelRectSGIX(__glutDisplay, __glutScreen,
- videoResizeChannel, x, y, width, height);
- }
-#endif
-}
-
-/* ENDCENTRY */
+ +/* Copyright (c) Mark J. Kilgard, 1996. */ + +/* This program is freely distributable without licensing fees + and is provided without guarantee or warrantee expressed or + implied. This program is -not- in the public domain. */ + +#include <stdlib.h> + +#ifdef __sgi +#include <dlfcn.h> +#endif + +#include "glutint.h" + +/* Grumble. The IRIX 6.3 and early IRIX 6.4 OpenGL headers + support the video resize extension, but failed to define + GLX_SGIX_video_resize. */ +#if 0 +#ifdef GLX_SYNC_FRAME_SGIX +#define GLX_SGIX_video_resize 1 +#endif +#endif + +#if defined(GLX_VERSION_1_1) && defined(GLX_SGIX_video_resize) +static int canVideoResize = -1; +static int videoResizeChannel; +#else +static int canVideoResize = 0; +#endif +static int videoResizeInUse = 0; +static int dx = -1, dy = -1, dw = -1, dh = -1; + +/* XXX Note that IRIX 6.2, 6.3, and some 6.4 versions have a + bug where programs seg-fault when they attempt video + resizing from an indirect OpenGL context (either local or + over a network). */ + +#if defined(GLX_VERSION_1_1) && defined(GLX_SGIX_video_resize) + +static volatile int errorCaught; + +/* ARGSUSED */ +static int +catchXSGIvcErrors(Display * dpy, XErrorEvent * event) +{ + errorCaught = 1; + return 0; +} +#endif + +/* CENTRY */ + +int GLUTAPIENTRY +glutVideoResizeGet(GLenum param) +{ +#if defined(GLX_VERSION_1_1) && defined(GLX_SGIX_video_resize) + if (canVideoResize < 0) { + canVideoResize = __glutIsSupportedByGLX("GLX_SGIX_video_resize"); + if (canVideoResize) { +#if defined(__sgi) && __sgi + /* This is a hack because IRIX 6.2, 6.3, and some 6.4 + versions were released with GLX_SGIX_video_resize + being advertised by the X server though the video + resize extension is not actually supported. We try to + determine if the libGL.so we are using actually has a + video resize entrypoint before we try to use the + feature. */ + void (*func) (void); + void *glxDso = dlopen("libGL.so", RTLD_LAZY); + + func = (void (*)(void)) dlsym(glxDso, "glXQueryChannelDeltasSGIX"); + if (!func) { + canVideoResize = 0; + } else +#endif + { + char *channelString; + int (*handler) (Display *, XErrorEvent *); + + channelString = getenv("GLUT_VIDEO_RESIZE_CHANNEL"); + videoResizeChannel = channelString ? atoi(channelString) : 0; + + /* Work around another annoying problem with SGI's + GLX_SGIX_video_resize implementation. Early IRIX + 6.4 OpenGL's advertise the extension and have the + video resize API, but an XSGIvc X protocol errors + result trying to use the API. Set up an error + handler to intercept what would otherwise be a fatal + error. If an error was recieved, do not report that + video resize is possible. */ + handler = XSetErrorHandler(catchXSGIvcErrors); + + errorCaught = 0; + +#if defined(GLX_GLXEXT_PROTOTYPES) +#endif + + __glut_glXQueryChannelDeltasSGIX(__glutDisplay, __glutScreen, + videoResizeChannel, &dx, &dy, &dw, &dh); + + /* glXQueryChannelDeltasSGIX is an inherent X server + round-trip so we know we will have gotten either the + correct reply or and error by this time. */ + XSetErrorHandler(handler); + + /* Still yet another work around. In IRIX 6.4 betas, + glXQueryChannelDeltasSGIX will return as if it + succeeded, but the values are filled with junk. + Watch to make sure the delta variables really make + sense. */ + if (errorCaught || + dx < 0 || dy < 0 || dw < 0 || dh < 0 || + dx > 2048 || dy > 2048 || dw > 2048 || dh > 2048) { + canVideoResize = 0; + } + } + } + } +#endif /* GLX_SGIX_video_resize */ + + switch (param) { + case GLUT_VIDEO_RESIZE_POSSIBLE: + return canVideoResize; + case GLUT_VIDEO_RESIZE_IN_USE: + return videoResizeInUse; + case GLUT_VIDEO_RESIZE_X_DELTA: + return dx; + case GLUT_VIDEO_RESIZE_Y_DELTA: + return dy; + case GLUT_VIDEO_RESIZE_WIDTH_DELTA: + return dw; + case GLUT_VIDEO_RESIZE_HEIGHT_DELTA: + return dh; + case GLUT_VIDEO_RESIZE_X: + case GLUT_VIDEO_RESIZE_Y: + case GLUT_VIDEO_RESIZE_WIDTH: + case GLUT_VIDEO_RESIZE_HEIGHT: +#if defined(GLX_VERSION_1_1) && defined(GLX_SGIX_video_resize) + if (videoResizeInUse) { + int x, y, width, height; + + __glut_glXQueryChannelRectSGIX(__glutDisplay, __glutScreen, + videoResizeChannel, &x, &y, &width, &height); + switch (param) { + case GLUT_VIDEO_RESIZE_X: + return x; + case GLUT_VIDEO_RESIZE_Y: + return y; + case GLUT_VIDEO_RESIZE_WIDTH: + return width; + case GLUT_VIDEO_RESIZE_HEIGHT: + return height; + } + } +#endif + return -1; + default: + __glutWarning("invalid glutVideoResizeGet parameter: %d", param); + return -1; + } +} + +void GLUTAPIENTRY +glutSetupVideoResizing(void) +{ +#if defined(GLX_VERSION_1_1) && defined(GLX_SGIX_video_resize) + if (glutVideoResizeGet(GLUT_VIDEO_RESIZE_POSSIBLE)) { + __glut_glXBindChannelToWindowSGIX(__glutDisplay, __glutScreen, + videoResizeChannel, __glutCurrentWindow->win); + videoResizeInUse = 1; + } else +#endif + __glutFatalError("glutEstablishVideoResizing: video resizing not possible.\n"); +} + +void GLUTAPIENTRY +glutStopVideoResizing(void) +{ +#if defined(GLX_VERSION_1_1) && defined(GLX_SGIX_video_resize) + if (glutVideoResizeGet(GLUT_VIDEO_RESIZE_POSSIBLE)) { + if (videoResizeInUse) { + __glut_glXBindChannelToWindowSGIX(__glutDisplay, __glutScreen, + videoResizeChannel, None); + videoResizeInUse = 0; + } + } +#endif +} + +/* ARGSUSED */ +void GLUTAPIENTRY +glutVideoResize(int x, int y, int width, int height) +{ +#if defined(GLX_VERSION_1_1) && defined(GLX_SGIX_video_resize) + if (videoResizeInUse) { +#ifdef GLX_SYNC_SWAP_SGIX + /* glXChannelRectSyncSGIX introduced in a patch to IRIX + 6.2; the original unpatched IRIX 6.2 behavior is always + GLX_SYNC_SWAP_SGIX. */ + __glut_glXChannelRectSyncSGIX(__glutDisplay, __glutScreen, + videoResizeChannel, GLX_SYNC_SWAP_SGIX); +#endif + __glut_glXChannelRectSGIX(__glutDisplay, __glutScreen, + videoResizeChannel, x, y, width, height); + } +#endif +} + +/* ARGSUSED */ +void GLUTAPIENTRY +glutVideoPan(int x, int y, int width, int height) +{ +#if defined(GLX_VERSION_1_1) && defined(GLX_SGIX_video_resize) + if (videoResizeInUse) { +#ifdef GLX_SYNC_FRAME_SGIX + /* glXChannelRectSyncSGIX introduced in a patch to IRIX + 6.2; the original unpatched IRIX 6.2 behavior is always + GLX_SYNC_SWAP_SGIX. We just ignore that we cannot + accomplish GLX_SYNC_FRAME_SGIX on IRIX unpatched 6.2; + this means you'd need a glutSwapBuffers to actually + realize the video resize. */ + __glut_glXChannelRectSyncSGIX(__glutDisplay, __glutScreen, + videoResizeChannel, GLX_SYNC_FRAME_SGIX); +#endif + __glut_glXChannelRectSGIX(__glutDisplay, __glutScreen, + videoResizeChannel, x, y, width, height); + } +#endif +} + +/* ENDCENTRY */ |