nvizlib: conditional references to x11 and aqua added (TODO: wgl)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@32043 15284696-431f-4ddb-bdfa-cd5b030d7da7

include/nviz.h

@@ -1,9 +1,6 @@
 #ifndef GRASS_NVIZ_H
 #define GRASS_NVIZ_H
 
-#include <grass/gsurf.h>
-#include <grass/gstypes.h>
-
 /*** Windows headers ***/
 #if defined(OPENGL_WINDOWS)
 #  define WIN32_LEAN_AND_MEAN
@@ -34,6 +31,9 @@
 #  error Unsupported platform, or confused platform defines...
 #endif
 
+#include <grass/gsurf.h>
+#include <grass/gstypes.h>
+
 #define MAP_OBJ_UNDEFINED 0
 #define MAP_OBJ_SURF 1
 #define MAP_OBJ_VOL 2
@@ -109,10 +109,19 @@ typedef struct {
 } nv_clientdata;
 
 struct render_window {
+#if defined(OPENGL_X11)
     Display *displayId;   /* display connection */
     GLXContext contextId; /* GLX rendering context */
-    Pixmap pixmap;
     GLXPixmap windowId;
+    Pixmap pixmap;
+#elif defined(OPENGL_AQUA)
+    AGLPixelFmtID displayId;
+    AGLContext contextId;
+    AGLPixmap windowId;
+    GWorldPtr pixmap;
+#elif defined(OPENGL_WGL)
+    /* TODO */
+#endif
 };
 
 /* change_view.c */

lib/nviz/render.c

@@ -9,7 +9,7 @@
   License (>=v2). Read the file COPYING that comes with GRASS
   for details.
 
-  Based on visualization/nviz/src/togl.c etc.
+  Based on visualization/nviz/src/togl.c
 
   \author Updated/modified by Martin Landa <landa.martin gmail.com> (Google SoC 2008)
 
@@ -57,8 +57,17 @@ void Nviz_init_render_window(struct render_window *rwin)
 */
 void Nviz_destroy_render_window(struct render_window *rwin)
 {
+#if defined(OPENGL_X11)
     glXDestroyContext(rwin->displayId, rwin->contextId);
+    glXDestroyGLXPixmap(rwin->displayId, rwin->windowId); 
     XFreePixmap(rwin->displayId, rwin->pixmap);
+#elif defined(OPENGL_AQUA)
+    aglDestroyContext(rwin->contextId);
+    aglDestroyAGLPixmap(rwin->windowId); 
+    /* TODO FreePixMap */
+#elif defined(OPENGL_WGL)
+    /* TODO: wglDeleteContext( HRC hrc ) */
+#endif
 
     G_free ((void *) rwin);
 
@@ -78,29 +87,54 @@ void Nviz_destroy_render_window(struct render_window *rwin)
 int Nviz_create_render_window(struct render_window *rwin, void *display,
 			      int width, int height)
 {
+#if defined(OPENGL_X11)
     XVisualInfo  *v;
+#elif defined(OPENGL_AQUA)
+    AGLPixelFmtID v;
+#elif defined(OPENGL_WGL)
+    int v;
+#endif
 
     int attributeList[] = { GLX_RGBA, GLX_RED_SIZE, 1,
 			    GLX_GREEN_SIZE, 1, GLX_BLUE_SIZE, 1,
 			    GLX_DEPTH_SIZE, 1, None };
 
     /* get the default display connection */
+#if defined(OPENGL_X11)
     rwin->displayId = XOpenDisplay((char *) display);
+#elif defined(OPENGL_AQUA)
+    /* TODO */
+#elif defined(OPENGL_WGL)
+    /* TODO */
+#endif
+
     if (!rwin->displayId) {
-	G_fatal_error (_("Bad X server connection"));
+	G_fatal_error (_("Bad server connection"));
     }
 
     /* get visual info and set up pixmap buffer */
+#if defined(OPENGL_X11)
     v = glXChooseVisual(rwin->displayId,
 			DefaultScreen(rwin->displayId),
 			attributeList);
 
     rwin->contextId = glXCreateContext(rwin->displayId,
-				      v, NULL, GL_FALSE);
+				       v, NULL, GL_FALSE);
+#elif defined(OPENGL_AQUA)
+    /* TODO */
+    rwin->displayId = aglChoosePixelFmt(GDHandle *dev, int ndev, attributeList);
+    
+    rwin->contextId = aglCreateContext(rwin->display, NULL); 
+#elif defined(OPENGL_WGL)
+    /* TODO int ChoosePixelFormat( HDC hdc, PIXELFORMATDESCRIPTOR *pfd ) */
+#endif
+
     if (!rwin->contextId) {
-	G_fatal_error (_("Unable to create GLX rendering context"));
+	G_fatal_error (_("Unable to create rendering context"));
     }
 
+
+#if defined(OPENGL_X11)
     /* create win pixmap to render to (same depth as RootWindow) */
     rwin->pixmap = XCreatePixmap(rwin->displayId,
 				RootWindow(rwin->displayId, v->screen),
@@ -111,6 +145,15 @@ int Nviz_create_render_window(struct render_window *rwin, void *display,
     /* create an off-screen GLX rendering area */
     rwin->windowId = glXCreateGLXPixmap(rwin->displayId,
 					v, rwin->pixmap);
+#elif defined(OPENGL_AQUA)
+    /* create win pixmap to render to (same depth as RootWindow) */
+    rwin->pixmap = NULL; /* TODO */
+    /* create an off-screen AGL rendering area */
+    rwin->windowId = aglCreateAGLPixmap(rwin->displayId,
+					rwin->pixmap); 
+#elif defined(OPENGL_WGL)
+    /* TODO */
+#endif
 
     if (v) {
 	XFree(v);
@@ -132,13 +175,20 @@ int Nviz_make_current_render_window(const struct render_window *rwin)
     if (!rwin->displayId || !rwin->contextId)
 	return 0;
 
+#if defined(OPENGL_X11)
     if (rwin->contextId == glXGetCurrentContext())
 	return 1;
 
     glXMakeCurrent(rwin->displayId, rwin->windowId,
 		   rwin->contextId);
+#elif defined(OPENGL_AQUA)
+    if (rwin->contextId == aglGetCurrentContext())
+	return 1;
 
-    /* TODO: AQUA */
+    aglMakeCurrent(rwin->windowId, rwin->contextId);
+#elif defined(OPENGL_WGL)
+    /* TODO wglMakeCurrent( HDC hdc, HGLRC hrc ) */
+#endif
 
     return 1;
 }