Retire miniglx and move the actual glx code up to src/glx

1 files changed, 724 insertions, 0 deletions

diff --git a/src/glx/glx_pbuffer.c b/src/glx/glx_pbuffer.c
new file mode 100644
index 0000000000..a0a02238b0
--- /dev/null
+++ b/src/glx/glx_pbuffer.c
@@ -0,0 +1,724 @@
+/*
+ * (C) Copyright IBM Corporation 2004
+ * 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"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file glx_pbuffer.c
+ * Implementation of pbuffer related functions.
+ *
+ * \author Ian Romanick <idr@us.ibm.com>
+ */
+
+#include <inttypes.h>
+#include "glxclient.h"
+#include <X11/extensions/extutil.h>
+#include <X11/extensions/Xext.h>
+#include <assert.h>
+#include <string.h>
+#include "glxextensions.h"
+
+#define WARN_ONCE_GLX_1_3(a, b) {		\
+		static int warned=1;		\
+		if(warned) {			\
+			warn_GLX_1_3((a), b );	\
+			warned=0;		\
+		}				\
+	}
+
+/**
+ * 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)
+{
+   __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);
+   }
+}
+
+
+/**
+ * Change a drawable's attribute.
+ *
+ * This function is used to implement \c glXSelectEvent and
+ * \c glXSelectEventSGIX.
+ *
+ * \note
+ * This function dynamically determines whether to use the SGIX_pbuffer
+ * version of the protocol or the GLX 1.3 version of the protocol.
+ *
+ * \todo
+ * This function needs to be modified to work with direct-rendering drivers.
+ */
+static void
+ChangeDrawableAttribute(Display * dpy, GLXDrawable drawable,
+                        const CARD32 * attribs, size_t num_attribs)
+{
+   __GLXdisplayPrivate *priv = __glXInitialize(dpy);
+   CARD32 *output;
+   CARD8 opcode;
+
+   if ((dpy == NULL) || (drawable == 0)) {
+      return;
+   }
+
+   opcode = __glXSetupForCommand(dpy);
+   if (!opcode)
+      return;
+
+   LockDisplay(dpy);
+
+   if ((priv->majorVersion > 1) || (priv->minorVersion >= 3)) {
+      xGLXChangeDrawableAttributesReq *req;
+
+      GetReqExtra(GLXChangeDrawableAttributes, 8 + (8 * num_attribs), req);
+      output = (CARD32 *) (req + 1);
+
+      req->reqType = opcode;
+      req->glxCode = X_GLXChangeDrawableAttributes;
+      req->drawable = drawable;
+      req->numAttribs = (CARD32) num_attribs;
+   }
+   else {
+      xGLXVendorPrivateWithReplyReq *vpreq;
+
+      GetReqExtra(GLXVendorPrivateWithReply, 4 + (8 * num_attribs), vpreq);
+      output = (CARD32 *) (vpreq + 1);
+
+      vpreq->reqType = opcode;
+      vpreq->glxCode = X_GLXVendorPrivateWithReply;
+      vpreq->vendorCode = X_GLXvop_ChangeDrawableAttributesSGIX;
+
+      output[0] = (CARD32) drawable;
+      output++;
+   }
+
+   (void) memcpy(output, attribs, sizeof(CARD32) * 2 * num_attribs);
+
+   UnlockDisplay(dpy);
+   SyncHandle();
+
+   return;
+}
+
+
+/**
+ * Destroy a pbuffer.
+ *
+ * This function is used to implement \c glXDestroyPbuffer and
+ * \c glXDestroyGLXPbufferSGIX.
+ *
+ * \note
+ * This function dynamically determines whether to use the SGIX_pbuffer
+ * version of the protocol or the GLX 1.3 version of the protocol.
+ *
+ * \todo
+ * This function needs to be modified to work with direct-rendering drivers.
+ */
+static void
+DestroyPbuffer(Display * dpy, GLXDrawable drawable)
+{
+   __GLXdisplayPrivate *priv = __glXInitialize(dpy);
+   CARD8 opcode;
+
+   if ((dpy == NULL) || (drawable == 0)) {
+      return;
+   }
+
+   opcode = __glXSetupForCommand(dpy);
+   if (!opcode)
+      return;
+
+   LockDisplay(dpy);
+
+   if ((priv->majorVersion > 1) || (priv->minorVersion >= 3)) {
+      xGLXDestroyPbufferReq *req;
+
+      GetReq(GLXDestroyPbuffer, req);
+      req->reqType = opcode;
+      req->glxCode = X_GLXDestroyPbuffer;
+      req->pbuffer = (GLXPbuffer) drawable;
+   }
+   else {
+      xGLXVendorPrivateWithReplyReq *vpreq;
+      CARD32 *data;
+
+      GetReqExtra(GLXVendorPrivateWithReply, 4, vpreq);
+      data = (CARD32 *) (vpreq + 1);
+
+      data[0] = (CARD32) drawable;
+
+      vpreq->reqType = opcode;
+      vpreq->glxCode = X_GLXVendorPrivateWithReply;
+      vpreq->vendorCode = X_GLXvop_DestroyGLXPbufferSGIX;
+   }
+
+   UnlockDisplay(dpy);
+   SyncHandle();
+
+   return;
+}
+
+
+#ifdef GLX_DIRECT_RENDERING
+extern __GLXDRIdrawable *GetGLXDRIDrawable(Display * dpy,
+                                           GLXDrawable drawable,
+                                           int *const scrn_num);
+
+static GLenum
+determineTextureTarget(const int *attribs, int numAttribs)
+{
+   GLenum target = 0;
+   int i;
+
+   for (i = 0; i < numAttribs; i++) {
+      if (attribs[2 * i] == GLX_TEXTURE_TARGET_EXT) {
+         switch (attribs[2 * i + 1]) {
+         case GLX_TEXTURE_2D_EXT:
+            target = GL_TEXTURE_2D;
+            break;
+         case GLX_TEXTURE_RECTANGLE_EXT:
+            target = GL_TEXTURE_RECTANGLE_ARB;
+            break;
+         }
+      }
+   }
+
+   return target;
+}
+
+
+static GLenum
+determineTextureFormat(const int *attribs, int numAttribs)
+{
+   int i;
+
+   for (i = 0; i < numAttribs; i++) {
+      if (attribs[2 * i] == GLX_TEXTURE_FORMAT_EXT)
+         return attribs[2 * i + 1];
+   }
+
+   return 0;
+}
+#endif
+
+/**
+ * Get a drawable's attribute.
+ *
+ * This function is used to implement \c glXGetSelectedEvent and
+ * \c glXGetSelectedEventSGIX.
+ *
+ * \note
+ * This function dynamically determines whether to use the SGIX_pbuffer
+ * version of the protocol or the GLX 1.3 version of the protocol.
+ *
+ * \todo
+ * The number of attributes returned is likely to be small, probably less than
+ * 10.  Given that, this routine should try to use an array on the stack to
+ * capture the reply rather than always calling Xmalloc.
+ *
+ * \todo
+ * This function needs to be modified to work with direct-rendering drivers.
+ */
+static int
+GetDrawableAttribute(Display * dpy, GLXDrawable drawable,
+                     int attribute, unsigned int *value)
+{
+   __GLXdisplayPrivate *priv;
+   xGLXGetDrawableAttributesReply reply;
+   CARD32 *data;
+   CARD8 opcode;
+   unsigned int length;
+   unsigned int i;
+   unsigned int num_attributes;
+   GLboolean use_glx_1_3;
+
+   if ((dpy == NULL) || (drawable == 0)) {
+      return 0;
+   }
+
+   priv = __glXInitialize(dpy);
+   use_glx_1_3 = ((priv->majorVersion > 1) || (priv->minorVersion >= 3));
+
+   *value = 0;
+
+
+   opcode = __glXSetupForCommand(dpy);
+   if (!opcode)
+      return 0;
+
+   LockDisplay(dpy);
+
+   if (use_glx_1_3) {
+      xGLXGetDrawableAttributesReq *req;
+
+      GetReqExtra(GLXGetDrawableAttributes, 4, req);
+      req->reqType = opcode;
+      req->glxCode = X_GLXGetDrawableAttributes;
+      req->drawable = drawable;
+   }
+   else {
+      xGLXVendorPrivateWithReplyReq *vpreq;
+
+      GetReqExtra(GLXVendorPrivateWithReply, 4, vpreq);
+      data = (CARD32 *) (vpreq + 1);
+      data[0] = (CARD32) drawable;
+
+      vpreq->reqType = opcode;
+      vpreq->glxCode = X_GLXVendorPrivateWithReply;
+      vpreq->vendorCode = X_GLXvop_GetDrawableAttributesSGIX;
+   }
+
+   _XReply(dpy, (xReply *) & reply, 0, False);
+
+   if (reply.type == X_Error) {
+      UnlockDisplay(dpy);
+      SyncHandle();
+      return 0;
+   }
+
+   length = reply.length;
+   if (length) {
+      num_attributes = (use_glx_1_3) ? reply.numAttribs : length / 2;
+      data = (CARD32 *) Xmalloc(length * sizeof(CARD32));
+      if (data == NULL) {
+         /* Throw data on the floor */
+         _XEatData(dpy, length);
+      }
+      else {
+         _XRead(dpy, (char *) data, length * sizeof(CARD32));
+
+         /* Search the set of returned attributes for the attribute requested by
+          * the caller.
+          */
+         for (i = 0; i < num_attributes; i++) {
+            if (data[i * 2] == attribute) {
+               *value = data[(i * 2) + 1];
+               break;
+            }
+         }
+
+#ifdef GLX_DIRECT_RENDERING
+         {
+            __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, NULL);
+
+            if (pdraw != NULL && !pdraw->textureTarget)
+               pdraw->textureTarget =
+                  determineTextureTarget((const int *) data, num_attributes);
+            if (pdraw != NULL && !pdraw->textureFormat)
+               pdraw->textureFormat =
+                  determineTextureFormat((const int *) data, num_attributes);
+         }
+#endif
+
+         Xfree(data);
+      }
+   }
+
+   UnlockDisplay(dpy);
+   SyncHandle();
+
+   return 0;
+}
+
+/**
+ * Create a non-pbuffer GLX drawable.
+ *
+ * \todo
+ * This function needs to be modified to work with direct-rendering drivers.
+ */
+static GLXDrawable
+CreateDrawable(Display * dpy, const __GLcontextModes * fbconfig,
+               Drawable drawable, const int *attrib_list, CARD8 glxCode)
+{
+   xGLXCreateWindowReq *req;
+   CARD32 *data;
+   unsigned int i;
+   CARD8 opcode;
+
+   i = 0;
+   if (attrib_list) {
+      while (attrib_list[i * 2] != None)
+         i++;
+   }
+
+   opcode = __glXSetupForCommand(dpy);
+   if (!opcode)
+      return None;
+
+   LockDisplay(dpy);
+   GetReqExtra(GLXCreateWindow, 8 * i, req);
+   data = (CARD32 *) (req + 1);
+
+   req->reqType = opcode;
+   req->glxCode = glxCode;
+   req->screen = (CARD32) fbconfig->screen;
+   req->fbconfig = fbconfig->fbconfigID;
+   req->window = (CARD32) drawable;
+   req->glxwindow = (GLXWindow) XAllocID(dpy);
+   req->numAttribs = (CARD32) i;
+
+   memcpy(data, attrib_list, 8 * i);
+
+   UnlockDisplay(dpy);
+   SyncHandle();
+
+#ifdef GLX_DIRECT_RENDERING
+   do {
+      /* FIXME: Maybe delay __DRIdrawable creation until the drawable
+       * is actually bound to a context... */
+
+      __GLXdisplayPrivate *const priv = __glXInitialize(dpy);
+      __GLXDRIdrawable *pdraw;
+      __GLXscreenConfigs *psc;
+
+      psc = &priv->screenConfigs[fbconfig->screen];
+      if (psc->driScreen == NULL)
+         break;
+      pdraw = psc->driScreen->createDrawable(psc, drawable,
+                                             req->glxwindow, fbconfig);
+      if (pdraw == NULL) {
+         fprintf(stderr, "failed to create drawable\n");
+         break;
+      }
+
+      if (__glxHashInsert(psc->drawHash, req->glxwindow, pdraw)) {
+         (*pdraw->destroyDrawable) (pdraw);
+         return None;           /* FIXME: Check what we're supposed to do here... */
+      }
+
+      pdraw->textureTarget = determineTextureTarget(attrib_list, i);
+      pdraw->textureFormat = determineTextureFormat(attrib_list, i);
+   } while (0);
+#endif
+
+   return (GLXDrawable) req->glxwindow;
+}
+
+
+/**
+ * Destroy a non-pbuffer GLX drawable.
+ *
+ * \todo
+ * This function needs to be modified to work with direct-rendering drivers.
+ */
+static void
+DestroyDrawable(Display * dpy, GLXDrawable drawable, CARD32 glxCode)
+{
+   xGLXDestroyPbufferReq *req;
+   CARD8 opcode;
+
+   if ((dpy == NULL) || (drawable == 0)) {
+      return;
+   }
+
+
+   opcode = __glXSetupForCommand(dpy);
+   if (!opcode)
+      return;
+
+   LockDisplay(dpy);
+
+   GetReqExtra(GLXDestroyPbuffer, 4, req);
+   req->reqType = opcode;
+   req->glxCode = glxCode;
+   req->pbuffer = (GLXPbuffer) drawable;
+
+   UnlockDisplay(dpy);
+   SyncHandle();
+
+#ifdef GLX_DIRECT_RENDERING
+   {
+      int screen;
+      __GLXdisplayPrivate *const priv = __glXInitialize(dpy);
+      __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen);
+      __GLXscreenConfigs *psc = &priv->screenConfigs[screen];
+
+      if (pdraw != NULL) {
+         (*pdraw->destroyDrawable) (pdraw);
+         __glxHashDelete(psc->drawHash, drawable);
+      }
+   }
+#endif
+
+   return;
+}
+
+
+/**
+ * Create a pbuffer.
+ *
+ * This function is used to implement \c glXCreatePbuffer and
+ * \c glXCreateGLXPbufferSGIX.
+ *
+ * \note
+ * This function dynamically determines whether to use the SGIX_pbuffer
+ * version of the protocol or the GLX 1.3 version of the protocol.
+ *
+ * \todo
+ * This function needs to be modified to work with direct-rendering drivers.
+ */
+static GLXDrawable
+CreatePbuffer(Display * dpy, const __GLcontextModes * fbconfig,
+              unsigned int width, unsigned int height,
+              const int *attrib_list, GLboolean size_in_attribs)
+{
+   __GLXdisplayPrivate *priv = __glXInitialize(dpy);
+   GLXDrawable id = 0;
+   CARD32 *data;
+   CARD8 opcode;
+   unsigned int i;
+
+   i = 0;
+   if (attrib_list) {
+      while (attrib_list[i * 2])
+         i++;
+   }
+
+   opcode = __glXSetupForCommand(dpy);
+   if (!opcode)
+      return None;
+
+   LockDisplay(dpy);
+   id = XAllocID(dpy);
+
+   if ((priv->majorVersion > 1) || (priv->minorVersion >= 3)) {
+      xGLXCreatePbufferReq *req;
+      unsigned int extra = (size_in_attribs) ? 0 : 2;
+
+      GetReqExtra(GLXCreatePbuffer, (8 * (i + extra)), req);
+      data = (CARD32 *) (req + 1);
+
+      req->reqType = opcode;
+      req->glxCode = X_GLXCreatePbuffer;
+      req->screen = (CARD32) fbconfig->screen;
+      req->fbconfig = fbconfig->fbconfigID;
+      req->pbuffer = (GLXPbuffer) id;
+      req->numAttribs = (CARD32) (i + extra);
+
+      if (!size_in_attribs) {
+         data[(2 * i) + 0] = GLX_PBUFFER_WIDTH;
+         data[(2 * i) + 1] = width;
+         data[(2 * i) + 2] = GLX_PBUFFER_HEIGHT;
+         data[(2 * i) + 3] = height;
+         data += 4;
+      }
+   }
+   else {
+      xGLXVendorPrivateReq *vpreq;
+
+      GetReqExtra(GLXVendorPrivate, 20 + (8 * i), vpreq);
+      data = (CARD32 *) (vpreq + 1);
+
+      vpreq->reqType = opcode;
+      vpreq->glxCode = X_GLXVendorPrivate;
+      vpreq->vendorCode = X_GLXvop_CreateGLXPbufferSGIX;
+
+      data[0] = (CARD32) fbconfig->screen;
+      data[1] = (CARD32) fbconfig->fbconfigID;
+      data[2] = (CARD32) id;
+      data[3] = (CARD32) width;
+      data[4] = (CARD32) height;
+      data += 5;
+   }
+
+   (void) memcpy(data, attrib_list, sizeof(CARD32) * 2 * i);
+
+   UnlockDisplay(dpy);
+   SyncHandle();
+
+   return id;
+}
+
+
+/**
+ * Create a new pbuffer.
+ */
+PUBLIC GLXPbufferSGIX
+glXCreateGLXPbufferSGIX(Display * dpy, GLXFBConfigSGIX config,
+                        unsigned int width, unsigned int height,
+                        int *attrib_list)
+{
+   return (GLXPbufferSGIX) CreatePbuffer(dpy, (__GLcontextModes *) config,
+                                         width, height,
+                                         attrib_list, GL_FALSE);
+}
+
+
+/**
+ * Create a new pbuffer.
+ */
+PUBLIC GLXPbuffer
+glXCreatePbuffer(Display * dpy, GLXFBConfig config, const int *attrib_list)
+{
+   int i, width, height;
+
+   width = 0;
+   height = 0;
+
+   WARN_ONCE_GLX_1_3(dpy, __func__);
+
+   for (i = 0; attrib_list[i * 2]; i++) {
+      switch (attrib_list[i * 2]) {
+      case GLX_PBUFFER_WIDTH:
+         width = attrib_list[i * 2 + 1];
+         break;
+      case GLX_PBUFFER_HEIGHT:
+         height = attrib_list[i * 2 + 1];
+         break;
+      }
+   }
+
+   return (GLXPbuffer) CreatePbuffer(dpy, (__GLcontextModes *) config,
+                                     width, height, attrib_list, GL_TRUE);
+}
+
+
+/**
+ * Destroy an existing pbuffer.
+ */
+PUBLIC void
+glXDestroyPbuffer(Display * dpy, GLXPbuffer pbuf)
+{
+   DestroyPbuffer(dpy, pbuf);
+}
+
+
+/**
+ * Query an attribute of a drawable.
+ */
+PUBLIC void
+glXQueryDrawable(Display * dpy, GLXDrawable drawable,
+                 int attribute, unsigned int *value)
+{
+   WARN_ONCE_GLX_1_3(dpy, __func__);
+   GetDrawableAttribute(dpy, drawable, attribute, value);
+}
+
+
+/**
+ * Query an attribute of a pbuffer.
+ */
+PUBLIC int
+glXQueryGLXPbufferSGIX(Display * dpy, GLXPbufferSGIX drawable,
+                       int attribute, unsigned int *value)
+{
+   return GetDrawableAttribute(dpy, drawable, attribute, value);
+}
+
+
+/**
+ * Select the event mask for a drawable.
+ */
+PUBLIC void
+glXSelectEvent(Display * dpy, GLXDrawable drawable, unsigned long mask)
+{
+   CARD32 attribs[2];
+
+   attribs[0] = (CARD32) GLX_EVENT_MASK;
+   attribs[1] = (CARD32) mask;
+
+   ChangeDrawableAttribute(dpy, drawable, attribs, 1);
+}
+
+
+/**
+ * Get the selected event mask for a drawable.
+ */
+PUBLIC void
+glXGetSelectedEvent(Display * dpy, GLXDrawable drawable, unsigned long *mask)
+{
+   unsigned int value;
+
+
+   /* The non-sense with value is required because on LP64 platforms
+    * sizeof(unsigned int) != sizeof(unsigned long).  On little-endian
+    * we could just type-cast the pointer, but why?
+    */
+
+   GetDrawableAttribute(dpy, drawable, GLX_EVENT_MASK_SGIX, &value);
+   *mask = value;
+}
+
+
+PUBLIC GLXPixmap
+glXCreatePixmap(Display * dpy, GLXFBConfig config, Pixmap pixmap,
+                const int *attrib_list)
+{
+   WARN_ONCE_GLX_1_3(dpy, __func__);
+
+   return CreateDrawable(dpy, (__GLcontextModes *) config,
+                         (Drawable) pixmap, attrib_list, X_GLXCreatePixmap);
+}
+
+
+PUBLIC GLXWindow
+glXCreateWindow(Display * dpy, GLXFBConfig config, Window win,
+                const int *attrib_list)
+{
+   WARN_ONCE_GLX_1_3(dpy, __func__);
+
+   return CreateDrawable(dpy, (__GLcontextModes *) config,
+                         (Drawable) win, attrib_list, X_GLXCreateWindow);
+}
+
+
+PUBLIC void
+glXDestroyPixmap(Display * dpy, GLXPixmap pixmap)
+{
+   WARN_ONCE_GLX_1_3(dpy, __func__);
+
+   DestroyDrawable(dpy, (GLXDrawable) pixmap, X_GLXDestroyPixmap);
+}
+
+
+PUBLIC void
+glXDestroyWindow(Display * dpy, GLXWindow win)
+{
+   WARN_ONCE_GLX_1_3(dpy, __func__);
+
+   DestroyDrawable(dpy, (GLXDrawable) win, X_GLXDestroyWindow);
+}
+
+
+PUBLIC
+GLX_ALIAS_VOID(glXDestroyGLXPbufferSGIX,
+               (Display * dpy, GLXPbufferSGIX pbuf),
+               (dpy, pbuf), glXDestroyPbuffer)
+
+PUBLIC
+GLX_ALIAS_VOID(glXSelectEventSGIX,
+               (Display * dpy, GLXDrawable drawable,
+                unsigned long mask), (dpy, drawable, mask), glXSelectEvent)
+
+PUBLIC
+GLX_ALIAS_VOID(glXGetSelectedEventSGIX,
+               (Display * dpy, GLXDrawable drawable,
+                unsigned long *mask), (dpy, drawable, mask),
+               glXGetSelectedEvent)
+