apple: Initial import of libGL for OSX from AppleSGLX svn repository.

Signed-off-by: Jeremy Huddleston <jeremyhu@apple.com>

1 files changed, 184 insertions, 12 deletions

diff --git a/src/glx/glx_pbuffer.c b/src/glx/glx_pbuffer.c
index 52e067165c..143cf87766 100644
--- a/src/glx/glx_pbuffer.c
+++ b/src/glx/glx_pbuffer.c
@@ -37,6 +37,12 @@
 #include <string.h>
 #include "glxextensions.h"
 
+#ifdef GLX_USE_APPLEGL
+#include <pthread.h>
+#include "apple_glx_drawable.h"
+#include "glx_error.h"
+#endif
+
 #define WARN_ONCE_GLX_1_3(a, b) {		\
 		static int warned=1;		\
 		if(warned) {			\
@@ -49,19 +55,19 @@
  * Emit a warning when clients use GLX 1.3 functions on pre-1.3 systems.
  */
 static void
-warn_GLX_1_3(Display *dpy, const char *function_name)
+warn_GLX_1_3(Display * dpy, const char *function_name)
 {
    __GLXdisplayPrivate *priv = __glXInitialize(dpy);
 
    if (priv->minorVersion < 3) {
-      fprintf(stderr, 
-	      "WARNING: Application calling GLX 1.3 function \"%s\" "
-	      "when GLX 1.3 is not supported!  This is an application bug!\n",
-	      function_name);
+      fprintf(stderr,
+              "WARNING: Application calling GLX 1.3 function \"%s\" "
+              "when GLX 1.3 is not supported!  This is an application bug!\n",
+              function_name);
    }
 }
 
-
+#ifndef GLX_USE_APPLEGL
 /**
  * Change a drawable's attribute.
  *
@@ -552,7 +558,6 @@ CreatePbuffer(Display * dpy, const __GLcontextModes * fbconfig,
    return id;
 }
 
-
 /**
  * Create a new pbuffer.
  */
@@ -566,6 +571,7 @@ glXCreateGLXPbufferSGIX(Display * dpy, GLXFBConfigSGIX config,
                                          attrib_list, GL_FALSE);
 }
 
+#endif /* GLX_USE_APPLEGL */
 
 /**
  * Create a new pbuffer.
@@ -574,12 +580,57 @@ PUBLIC GLXPbuffer
 glXCreatePbuffer(Display * dpy, GLXFBConfig config, const int *attrib_list)
 {
    int i, width, height;
+#ifdef GLX_USE_APPLEGL
+   GLXPbuffer result;
+   int errorcode;
+#endif
 
    width = 0;
    height = 0;
 
    WARN_ONCE_GLX_1_3(dpy, __func__);
 
+#ifdef GLX_USE_APPLEGL
+   for (i = 0; attrib_list[i]; ++i) {
+      switch (attrib_list[i]) {
+      case GLX_PBUFFER_WIDTH:
+         width = attrib_list[i + 1];
+         ++i;
+         break;
+
+      case GLX_PBUFFER_HEIGHT:
+         height = attrib_list[i + 1];
+         ++i;
+         break;
+
+      case GLX_LARGEST_PBUFFER:
+         /* This is a hint we should probably handle, but how? */
+         ++i;
+         break;
+
+      case GLX_PRESERVED_CONTENTS:
+         /* The contents are always preserved with AppleSGLX with CGL. */
+         ++i;
+         break;
+
+      default:
+         return None;
+      }
+   }
+
+   if (apple_glx_pbuffer_create(dpy, config, width, height, &errorcode,
+                                &result)) {
+      /* 
+       * apple_glx_pbuffer_create only sets the errorcode to core X11
+       * errors. 
+       */
+      __glXSendError(dpy, errorcode, 0, X_GLXCreatePbuffer, true);
+
+      return None;
+   }
+
+   return result;
+#else
    for (i = 0; attrib_list[i * 2]; i++) {
       switch (attrib_list[i * 2]) {
       case GLX_PBUFFER_WIDTH:
@@ -593,6 +644,7 @@ glXCreatePbuffer(Display * dpy, GLXFBConfig config, const int *attrib_list)
 
    return (GLXPbuffer) CreatePbuffer(dpy, (__GLcontextModes *) config,
                                      width, height, attrib_list, GL_TRUE);
+#endif
 }
 
 
@@ -602,7 +654,13 @@ glXCreatePbuffer(Display * dpy, GLXFBConfig config, const int *attrib_list)
 PUBLIC void
 glXDestroyPbuffer(Display * dpy, GLXPbuffer pbuf)
 {
+#ifdef GLX_USE_APPLEGL
+   if (apple_glx_pbuffer_destroy(dpy, pbuf)) {
+      __glXSendError(dpy, GLXBadPbuffer, pbuf, X_GLXDestroyPbuffer, false);
+   }
+#else
    DestroyPbuffer(dpy, pbuf);
+#endif
 }
 
 
@@ -614,10 +672,47 @@ glXQueryDrawable(Display * dpy, GLXDrawable drawable,
                  int attribute, unsigned int *value)
 {
    WARN_ONCE_GLX_1_3(dpy, __func__);
+#ifdef GLX_USE_APPLEGL
+   Window root;
+   int x, y;
+   unsigned int width, height, bd, depth;
+
+   if (apple_glx_pixmap_query(drawable, attribute, value))
+      return;                   /*done */
+
+   if (apple_glx_pbuffer_query(drawable, attribute, value))
+      return;                   /*done */
+
+   /*
+    * The OpenGL spec states that we should report GLXBadDrawable if
+    * the drawable is invalid, however doing so would require that we
+    * use XSetErrorHandler(), which is known to not be thread safe.
+    * If we use a round-trip call to validate the drawable, there could
+    * be a race, so instead we just opt in favor of letting the
+    * XGetGeometry request fail with a GetGeometry request X error 
+    * rather than GLXBadDrawable, in what is hoped to be a rare
+    * case of an invalid drawable.  In practice most and possibly all
+    * X11 apps using GLX shouldn't notice a difference.
+    */
+   if (XGetGeometry
+       (dpy, drawable, &root, &x, &y, &width, &height, &bd, &depth)) {
+      switch (attribute) {
+      case GLX_WIDTH:
+         *value = width;
+         break;
+
+      case GLX_HEIGHT:
+         *value = height;
+         break;
+      }
+   }
+#else
    GetDrawableAttribute(dpy, drawable, attribute, value);
+#endif
 }
 
 
+#ifndef GLX_USE_APPLEGL
 /**
  * Query an attribute of a pbuffer.
  */
@@ -627,7 +722,7 @@ glXQueryGLXPbufferSGIX(Display * dpy, GLXPbufferSGIX drawable,
 {
    return GetDrawableAttribute(dpy, drawable, attribute, value);
 }
-
+#endif
 
 /**
  * Select the event mask for a drawable.
@@ -635,12 +730,30 @@ glXQueryGLXPbufferSGIX(Display * dpy, GLXPbufferSGIX drawable,
 PUBLIC void
 glXSelectEvent(Display * dpy, GLXDrawable drawable, unsigned long mask)
 {
+#ifdef GLX_USE_APPLEGL
+   XWindowAttributes xwattr;
+
+   if (apple_glx_pbuffer_set_event_mask(drawable, mask))
+      return;                   /*done */
+
+   /* 
+    * The spec allows a window, but currently there are no valid
+    * events for a window, so do nothing.
+    */
+   if (XGetWindowAttributes(dpy, drawable, &xwattr))
+      return;                   /*done */
+   /* The drawable seems to be invalid.  Report an error. */
+
+   __glXSendError(dpy, GLXBadDrawable, drawable,
+                  X_GLXChangeDrawableAttributes, false);
+#else
    CARD32 attribs[2];
 
    attribs[0] = (CARD32) GLX_EVENT_MASK;
    attribs[1] = (CARD32) mask;
 
    ChangeDrawableAttribute(dpy, drawable, attribs, 1);
+#endif
 }
 
 
@@ -650,6 +763,26 @@ glXSelectEvent(Display * dpy, GLXDrawable drawable, unsigned long mask)
 PUBLIC void
 glXGetSelectedEvent(Display * dpy, GLXDrawable drawable, unsigned long *mask)
 {
+#ifdef GLX_USE_APPLEGL
+   XWindowAttributes xwattr;
+
+   if (apple_glx_pbuffer_get_event_mask(drawable, mask))
+      return;                   /*done */
+
+   /* 
+    * The spec allows a window, but currently there are no valid
+    * events for a window, so do nothing, but set the mask to 0.
+    */
+   if (XGetWindowAttributes(dpy, drawable, &xwattr)) {
+      /* The window is valid, so set the mask to 0. */
+      *mask = 0;
+      return;                   /*done */
+   }
+   /* The drawable seems to be invalid.  Report an error. */
+
+   __glXSendError(dpy, GLXBadDrawable, drawable, X_GLXGetDrawableAttributes,
+                  true);
+#else
    unsigned int value;
 
 
@@ -660,6 +793,7 @@ glXGetSelectedEvent(Display * dpy, GLXDrawable drawable, unsigned long *mask)
 
    GetDrawableAttribute(dpy, drawable, GLX_EVENT_MASK_SGIX, &value);
    *mask = value;
+#endif
 }
 
 
@@ -669,8 +803,17 @@ glXCreatePixmap(Display * dpy, GLXFBConfig config, Pixmap pixmap,
 {
    WARN_ONCE_GLX_1_3(dpy, __func__);
 
+#ifdef GLX_USE_APPLEGL
+   const __GLcontextModes *modes = (const __GLcontextModes *) config;
+
+   if (apple_glx_pixmap_create(dpy, modes->screen, pixmap, modes))
+      return None;
+
+   return pixmap;
+#else
    return CreateDrawable(dpy, (__GLcontextModes *) config,
                          (Drawable) pixmap, attrib_list, X_GLXCreatePixmap);
+#endif
 }
 
 
@@ -679,9 +822,33 @@ glXCreateWindow(Display * dpy, GLXFBConfig config, Window win,
                 const int *attrib_list)
 {
    WARN_ONCE_GLX_1_3(dpy, __func__);
+#ifdef GLX_USE_APPLEGL
+   XWindowAttributes xwattr;
+   XVisualInfo *visinfo;
+
+   (void) attrib_list;          /*unused according to GLX 1.4 */
+
+   XGetWindowAttributes(dpy, win, &xwattr);
 
+   visinfo = glXGetVisualFromFBConfig(dpy, config);
+
+   if (NULL == visinfo) {
+      __glXSendError(dpy, GLXBadFBConfig, 0, X_GLXCreateWindow, false);
+      return None;
+   }
+
+   if (visinfo->visualid != XVisualIDFromVisual(xwattr.visual)) {
+      __glXSendError(dpy, BadMatch, 0, X_GLXCreateWindow, true);
+      return None;
+   }
+
+   XFree(visinfo);
+
+   return win;
+#else
    return CreateDrawable(dpy, (__GLcontextModes *) config,
                          (Drawable) win, attrib_list, X_GLXCreateWindow);
+#endif
 }
 
 
@@ -689,8 +856,12 @@ PUBLIC void
 glXDestroyPixmap(Display * dpy, GLXPixmap pixmap)
 {
    WARN_ONCE_GLX_1_3(dpy, __func__);
-
+#ifdef GLX_USE_APPLEGL
+   if (apple_glx_pixmap_destroy(dpy, pixmap))
+      __glXSendError(dpy, GLXBadPixmap, pixmap, X_GLXDestroyPixmap, false);
+#else
    DestroyDrawable(dpy, (GLXDrawable) pixmap, X_GLXDestroyPixmap);
+#endif
 }
 
 
@@ -698,11 +869,12 @@ PUBLIC void
 glXDestroyWindow(Display * dpy, GLXWindow win)
 {
    WARN_ONCE_GLX_1_3(dpy, __func__);
-
+#ifndef GLX_USE_APPLEGL
    DestroyDrawable(dpy, (GLXDrawable) win, X_GLXDestroyWindow);
+#endif
 }
 
-
+#ifndef GLX_USE_APPLEGL
 PUBLIC
 GLX_ALIAS_VOID(glXDestroyGLXPbufferSGIX,
                (Display * dpy, GLXPbufferSGIX pbuf),
@@ -718,4 +890,4 @@ GLX_ALIAS_VOID(glXGetSelectedEventSGIX,
                (Display * dpy, GLXDrawable drawable,
                 unsigned long *mask), (dpy, drawable, mask),
                glXGetSelectedEvent)
-
+#endif