egl: add support for EGL_ANDROID_blob_cache

v2: cleanup, move callbacks to _egl_display struct (Emil Velikov)
    adapt to earlier ctx->screen changes

v3: remove useless checking, add _eglSetFuncName (Emil Velikov)

Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> (v2)
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

src/egl/drivers/dri2/egl_dri2.c

@@ -458,6 +458,7 @@ static const struct dri2_extension_match optional_core_extensions[] = {
    { __DRI2_INTEROP, 1, offsetof(struct dri2_egl_display, interop) },
    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
    { __DRI2_FLUSH_CONTROL, 1, offsetof(struct dri2_egl_display, flush_control) },
+   { __DRI2_BLOB, 1, offsetof(struct dri2_egl_display, blob) },
    { NULL, 0, 0 }
 };
 
@@ -727,6 +728,9 @@ dri2_setup_screen(_EGLDisplay *disp)
       }
    }
 
+   if (dri2_dpy->blob)
+      disp->Extensions.ANDROID_blob_cache = EGL_TRUE;
+
    disp->Extensions.KHR_reusable_sync = EGL_TRUE;
 
    if (dri2_dpy->image) {
@@ -3016,6 +3020,17 @@ dri2_dup_native_fence_fd(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
    return dup(sync->SyncFd);
 }
 
+static void
+dri2_set_blob_cache_funcs(_EGLDriver *drv, _EGLDisplay *dpy,
+                          EGLSetBlobFuncANDROID set,
+                          EGLGetBlobFuncANDROID get)
+{
+   struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
+   dri2_dpy->blob->set_cache_funcs(dri2_dpy->dri_screen,
+                                   dpy->BlobCacheSet,
+                                   dpy->BlobCacheGet);
+}
+
 static EGLint
 dri2_client_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
                       EGLint flags, EGLTime timeout)
@@ -3234,6 +3249,7 @@ _eglBuiltInDriver(void)
    dri2_drv->API.GLInteropQueryDeviceInfo = dri2_interop_query_device_info;
    dri2_drv->API.GLInteropExportObject = dri2_interop_export_object;
    dri2_drv->API.DupNativeFenceFDANDROID = dri2_dup_native_fence_fd;
+   dri2_drv->API.SetBlobCacheFuncsANDROID = dri2_set_blob_cache_funcs;
 
    dri2_drv->Name = "DRI2";
 

src/egl/drivers/dri2/egl_dri2.h

@@ -171,6 +171,7 @@ struct dri2_egl_display
    const __DRInoErrorExtension    *no_error;
    const __DRI2configQueryExtension *config;
    const __DRI2fenceExtension *fence;
+   const __DRI2blobExtension *blob;
    const __DRI2rendererQueryExtension *rendererQuery;
    const __DRI2interopExtension *interop;
    int                       fd;

src/egl/main/eglapi.c

@@ -476,6 +476,7 @@ _eglCreateExtensionsString(_EGLDisplay *dpy)
    char *exts = dpy->ExtensionsString;
 
    /* Please keep these sorted alphabetically. */
+   _EGL_CHECK_EXTENSION(ANDROID_blob_cache);
    _EGL_CHECK_EXTENSION(ANDROID_framebuffer_target);
    _EGL_CHECK_EXTENSION(ANDROID_image_native_buffer);
    _EGL_CHECK_EXTENSION(ANDROID_native_fence_sync);
@@ -2522,6 +2523,49 @@ eglQueryDmaBufModifiersEXT(EGLDisplay dpy, EGLint format, EGLint max_modifiers,
    RETURN_EGL_EVAL(disp, ret);
 }
 
+static void EGLAPIENTRY
+eglSetBlobCacheFuncsANDROID(EGLDisplay *dpy, EGLSetBlobFuncANDROID set,
+                            EGLGetBlobFuncANDROID get)
+{
+   /* This function does not return anything so we cannot
+    * utilize the helper macros _EGL_FUNC_START or _EGL_CHECK_DISPLAY.
+    */
+   _EGLDisplay *disp = _eglLockDisplay(dpy);
+   if (!_eglSetFuncName(__func__, disp, EGL_OBJECT_DISPLAY_KHR, NULL)) {
+      if (disp)
+         _eglUnlockDisplay(disp);
+      return;
+   }
+
+   _EGLDriver *drv = _eglCheckDisplay(disp, __func__);
+   if (!drv) {
+      if (disp)
+         _eglUnlockDisplay(disp);
+      return;
+   }
+
+   if (!set || !get) {
+      _eglError(EGL_BAD_PARAMETER,
+                "eglSetBlobCacheFuncsANDROID: NULL handler given");
+      _eglUnlockDisplay(disp);
+      return;
+   }
+
+   if (disp->BlobCacheSet) {
+      _eglError(EGL_BAD_PARAMETER,
+                "eglSetBlobCacheFuncsANDROID: functions already set");
+      _eglUnlockDisplay(disp);
+      return;
+   }
+
+   disp->BlobCacheSet = set;
+   disp->BlobCacheGet = get;
+
+   drv->API.SetBlobCacheFuncsANDROID(drv, disp, set, get);
+
+   _eglUnlockDisplay(disp);
+}
+
 __eglMustCastToProperFunctionPointerType EGLAPIENTRY
 eglGetProcAddress(const char *procname)
 {

src/egl/main/eglapi.h

@@ -209,6 +209,10 @@ struct _egl_api
                                           EGLuint64KHR *modifiers,
                                           EGLBoolean *external_only,
                                           EGLint *num_modifiers);
+
+   void (*SetBlobCacheFuncsANDROID) (_EGLDriver *drv, _EGLDisplay *dpy,
+                                     EGLSetBlobFuncANDROID set,
+                                     EGLGetBlobFuncANDROID get);
 };
 
 #ifdef __cplusplus

src/egl/main/egldisplay.h

@@ -92,6 +92,7 @@ struct _egl_resource
 struct _egl_extensions
 {
    /* Please keep these sorted alphabetically. */
+   EGLBoolean ANDROID_blob_cache;
    EGLBoolean ANDROID_framebuffer_target;
    EGLBoolean ANDROID_image_native_buffer;
    EGLBoolean ANDROID_native_fence_sync;
@@ -181,6 +182,9 @@ struct _egl_display
    _EGLResource *ResourceLists[_EGL_NUM_RESOURCES];
 
    EGLLabelKHR Label;
+
+   EGLSetBlobFuncANDROID BlobCacheSet;
+   EGLGetBlobFuncANDROID BlobCacheGet;
 };
 
 

src/egl/main/eglentrypoint.h

@@ -63,6 +63,7 @@ EGL_ENTRYPOINT(eglQuerySurface)
 EGL_ENTRYPOINT(eglQueryWaylandBufferWL)
 EGL_ENTRYPOINT(eglReleaseTexImage)
 EGL_ENTRYPOINT(eglReleaseThread)
+EGL_ENTRYPOINT(eglSetBlobCacheFuncsANDROID)
 EGL_ENTRYPOINT(eglSetDamageRegionKHR)
 EGL_ENTRYPOINT(eglSignalSyncKHR)
 EGL_ENTRYPOINT(eglSurfaceAttrib)