src/egl/main/eglsync.c

   1 #include <string.h>
   2
   3 #include "eglsync.h"
   4 #include "eglcurrent.h"
   5 #include "egllog.h"
   6
   7
   8 #ifdef EGL_KHR_reusable_sync
   9
  10
  11 /**
  12  * Parse the list of sync attributes and return the proper error code.
  13  */
  14 static EGLint
  15 _eglParseSyncAttribList(_EGLSync *sync, const EGLint *attrib_list)
  16 {
  17    EGLint i, err = EGL_SUCCESS;
  18
  19    if (!attrib_list)
  20       return EGL_SUCCESS;
  21
  22    for (i = 0; attrib_list[i] != EGL_NONE; i++) {
  23       EGLint attr = attrib_list[i++];
  24       EGLint val = attrib_list[i];
  25
  26       switch (attr) {
  27       default:
  28          (void) val;
  29          err = EGL_BAD_ATTRIBUTE;
  30          break;
  31       }
  32
  33       if (err != EGL_SUCCESS) {
  34          _eglLog(_EGL_DEBUG, "bad sync attribute 0x%04x", attr);
  35          break;
  36       }
  37    }
  38
  39    return err;
  40 }
  41
  42
  43 EGLBoolean
  44 _eglInitSync(_EGLSync *sync, _EGLDisplay *dpy, EGLenum type,
  45              const EGLint *attrib_list)
  46 {
  47    EGLint err;
  48
  49    if (!(type == EGL_SYNC_REUSABLE_KHR && dpy->Extensions.KHR_reusable_sync) &&
  50        !(type == EGL_SYNC_FENCE_KHR && dpy->Extensions.KHR_fence_sync))
  51       return _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
  52
  53    memset(sync, 0, sizeof(*sync));
  54
  55    sync->Resource.Display = dpy;
  56
  57    sync->Type = type;
  58    sync->SyncStatus = EGL_UNSIGNALED_KHR;
  59    sync->SyncCondition = EGL_SYNC_PRIOR_COMMANDS_COMPLETE_KHR;
  60
  61    err = _eglParseSyncAttribList(sync, attrib_list);
  62    if (err != EGL_SUCCESS)
  63       return _eglError(err, "eglCreateSyncKHR");
  64
  65    return EGL_TRUE;
  66 }
  67
  68
  69 EGLBoolean
  70 _eglGetSyncAttribKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
  71                      EGLint attribute, EGLint *value)
  72 {
  73    if (!value)
  74       return _eglError(EGL_BAD_PARAMETER, "eglGetConfigs");
  75
  76    switch (attribute) {
  77    case EGL_SYNC_TYPE_KHR:
  78       *value = sync->Type;
  79       break;
  80    case EGL_SYNC_STATUS_KHR:
  81       *value = sync->SyncStatus;
  82       break;
  83    case EGL_SYNC_CONDITION_KHR:
  84       if (sync->Type != EGL_SYNC_FENCE_KHR)
  85          return _eglError(EGL_BAD_ATTRIBUTE, "eglGetSyncAttribKHR");
  86       *value = sync->SyncCondition;
  87       break;
  88    default:
  89       return _eglError(EGL_BAD_ATTRIBUTE, "eglGetSyncAttribKHR");
  90       break;
  91    }
  92
  93    return EGL_TRUE;
  94 }
  95
  96
  97 #endif /* EGL_KHR_reusable_sync */