src/glx/glxglvnd.c

   1 #include <string.h>
   2 #include <X11/Xlib.h>
   3
   4 #include "glvnd/libglxabi.h"
   5
   6 #include "glxglvnd.h"
   7
   8
   9 static Bool __glXGLVNDIsScreenSupported(Display *dpy, int screen)
  10 {
  11     /* TODO: Think of a better heuristic... */
  12     return True;
  13 }
  14
  15 static void *__glXGLVNDGetProcAddress(const GLubyte *procName)
  16 {
  17     return glXGetProcAddressARB(procName);
  18 }
  19
  20 static int FindGLXFunction(const GLubyte *name)
  21 {
  22     int i;
  23
  24     for (i = 0; i < DI_FUNCTION_COUNT; i++) {
  25         if (strcmp((const char *) name, __glXDispatchTableStrings[i]) == 0)
  26             return i;
  27     }
  28     return -1;
  29 }
  30
  31 static void *__glXGLVNDGetDispatchAddress(const GLubyte *procName)
  32 {
  33     int internalIndex = FindGLXFunction(procName);
  34
  35     if (internalIndex >= 0) {
  36         return __glXDispatchFunctions[internalIndex];
  37     }
  38
  39     return NULL;
  40 }
  41
  42 static void __glXGLVNDSetDispatchIndex(const GLubyte *procName, int index)
  43 {
  44     int internalIndex = FindGLXFunction(procName);
  45
  46     if (internalIndex >= 0)
  47         __glXDispatchTableIndices[internalIndex] = index;
  48 }
  49
  50 _X_EXPORT Bool __glx_Main(uint32_t version, const __GLXapiExports *exports,
  51                           __GLXvendorInfo *vendor, __GLXapiImports *imports)
  52 {
  53     static Bool initDone = False;
  54
  55     if (GLX_VENDOR_ABI_GET_MAJOR_VERSION(version) !=
  56         GLX_VENDOR_ABI_MAJOR_VERSION ||
  57         GLX_VENDOR_ABI_GET_MINOR_VERSION(version) <
  58         GLX_VENDOR_ABI_MINOR_VERSION)
  59         return False;
  60
  61     if (!initDone) {
  62         initDone = True;
  63         __glXGLVNDAPIExports = exports;
  64
  65         imports->isScreenSupported = __glXGLVNDIsScreenSupported;
  66         imports->getProcAddress = __glXGLVNDGetProcAddress;
  67         imports->getDispatchAddress = __glXGLVNDGetDispatchAddress;
  68         imports->setDispatchIndex = __glXGLVNDSetDispatchIndex;
  69         imports->notifyError = NULL;
  70         imports->isPatchSupported = NULL;
  71         imports->initiatePatch = NULL;
  72     }
  73
  74     return True;
  75 }