workbench/libs/gallium/gallium_func.c

   1 /*
   2     Copyright 2010-2016, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include "gallium_intern.h"
   7 #include <proto/oop.h>
   8 #include <aros/debug.h>
   9
  10 #undef HiddGalliumAttrBase
  11 #define HiddGalliumAttrBase GB(GalliumBase)->galliumAttrBase
  12
  13 BOOL IsVersionMatching(ULONG version, OOP_Object * driver, struct Library * GalliumBase)
  14 {
  15     IPTR galliuminterfaceversion = 0;
  16
  17     if ((!driver) || (!GalliumBase))
  18         return FALSE;
  19
  20     OOP_GetAttr(driver, aHidd_Gallium_GalliumInterfaceVersion, &galliuminterfaceversion);
  21
  22     return (version == (ULONG)galliuminterfaceversion);
  23 }
  24
  25 OOP_Object * SelectGalliumDriver(ULONG requestedinterfaceversion, struct Library * GalliumBase)
  26 {
  27     OOP_Object * driver = NULL;
  28
  29     /* 1. Let's see if we can create hidd.gallium.nouveau object. This will
  30         only work if the nouveau.hidd is actually loaded and used */
  31     driver = OOP_NewObject(NULL, "hidd.gallium.nouveau", NULL);
  32     if (driver)
  33     {
  34         if (IsVersionMatching(requestedinterfaceversion, driver, GalliumBase))
  35             return driver;
  36         else
  37         {
  38             /* Failed version check */
  39             OOP_DisposeObject(driver);
  40             driver = NULL;
  41         }
  42     }
  43
  44     /* 2. Nouveau fails, try the next best... */
  45     driver = OOP_NewObject(NULL, "hidd.gallium.intelgma", NULL);
  46     if (driver)
  47     {
  48         if (IsVersionMatching(requestedinterfaceversion, driver, GalliumBase)){
  49             return driver;
  50         }
  51         else
  52         {
  53             /* Failed version check */
  54             OOP_DisposeObject(driver);
  55             driver = NULL;
  56         }
  57     }
  58
  59     /* 3. Everything else failed. Let's try loading softpipe */
  60     if (!GB(GalliumBase)->drivermodule)
  61         GB(GalliumBase)->drivermodule = OpenLibrary("softpipe.hidd", 9);
  62
  63     if (GB(GalliumBase)->drivermodule)
  64     {
  65         driver = OOP_NewObject(NULL, "hidd.gallium.softpipe", NULL);
  66         if (driver)
  67         {
  68             if (IsVersionMatching(requestedinterfaceversion, driver, GalliumBase))
  69                 return driver;
  70             else
  71             {
  72                 /* Failed version check */
  73                 OOP_DisposeObject(driver);
  74                 driver = NULL;
  75             }
  76         }
  77
  78         /* Failed. Close library */
  79         CloseLibrary(GB(GalliumBase)->drivermodule);
  80         GB(GalliumBase)->drivermodule = NULL;
  81     }
  82
  83     return NULL;
  84 }