1 files changed, 129 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/dri/common/dri1_helper.c b/src/gallium/state_trackers/dri/common/dri1_helper.c
new file mode 100644
index 0000000000..7eeb868d42
--- /dev/null
+++ b/src/gallium/state_trackers/dri/common/dri1_helper.c
@@ -0,0 +1,129 @@
+/**************************************************************************
+ *
+ * Copyright 2009, VMware, Inc.
+ * 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 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 VMWARE AND/OR ITS 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.
+ *
+ **************************************************************************/
+/*
+ * Management of pipe objects (surface / pipe / fences) used by DRI1 and DRISW.
+ *
+ * Author: Keith Whitwell <keithw@vmware.com>
+ * Author: Jakob Bornecrantz <wallbraker@gmail.com>
+ */
+
+#include "util/u_inlines.h"
+#include "pipe/p_context.h"
+
+#include "dri_screen.h"
+#include "dri_context.h"
+#include "dri_drawable.h"
+#include "dri1_helper.h"
+
+struct pipe_fence_handle *
+dri1_swap_fences_pop_front(struct dri_drawable *draw)
+{
+   struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
+   struct pipe_fence_handle *fence = NULL;
+
+   if (draw->cur_fences >= draw->desired_fences) {
+      screen->fence_reference(screen, &fence, draw->swap_fences[draw->tail]);
+      screen->fence_reference(screen, &draw->swap_fences[draw->tail++], NULL);
+      --draw->cur_fences;
+      draw->tail &= DRI_SWAP_FENCES_MASK;
+   }
+   return fence;
+}
+
+void
+dri1_swap_fences_push_back(struct dri_drawable *draw,
+                           struct pipe_fence_handle *fence)
+{
+   struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
+
+   if (!fence)
+      return;
+
+   if (draw->cur_fences < DRI_SWAP_FENCES_MAX) {
+      draw->cur_fences++;
+      screen->fence_reference(screen, &draw->swap_fences[draw->head++],
+			      fence);
+      draw->head &= DRI_SWAP_FENCES_MASK;
+   }
+}
+
+void
+dri1_swap_fences_clear(struct dri_drawable *drawable)
+{
+   struct pipe_screen *screen = dri_screen(drawable->sPriv)->pipe_screen;
+   struct pipe_fence_handle *fence;
+
+   while (drawable->cur_fences) {
+      fence = dri1_swap_fences_pop_front(drawable);
+      screen->fence_reference(screen, &fence, NULL);
+   }
+}
+
+struct pipe_surface *
+dri1_get_pipe_surface(struct dri_drawable *drawable, struct pipe_texture *ptex)
+{
+   struct pipe_screen *pipe_screen = dri_screen(drawable->sPriv)->pipe_screen;
+   struct pipe_surface *psurf = drawable->dri1_surface;
+
+   if (!psurf || psurf->texture != ptex) {
+      pipe_surface_reference(&drawable->dri1_surface, NULL);
+
+      drawable->dri1_surface = pipe_screen->get_tex_surface(pipe_screen,
+            ptex, 0, 0, 0, PIPE_BUFFER_USAGE_GPU_READ);
+
+      psurf = drawable->dri1_surface;
+   }
+
+   return psurf;
+}
+
+void
+dri1_destroy_pipe_surface(struct dri_drawable *drawable)
+{
+   pipe_surface_reference(&drawable->dri1_surface, NULL);
+}
+
+struct pipe_context *
+dri1_get_pipe_context(struct dri_screen *screen)
+{
+   struct pipe_context *pipe = screen->dri1_pipe;
+
+   if (!pipe) {
+      screen->dri1_pipe =
+         screen->pipe_screen->context_create(screen->pipe_screen, NULL);
+      pipe = screen->dri1_pipe;
+   }
+
+   return pipe;
+}
+
+void
+dri1_destroy_pipe_context(struct dri_screen *screen)
+{
+   if (screen->dri1_pipe)
+      screen->dri1_pipe->destroy(screen->dri1_pipe);
+}