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Diffstat (limited to 'src/mesa/pipe/failover/fo_context.c')
-rw-r--r--src/mesa/pipe/failover/fo_context.c155
1 files changed, 155 insertions, 0 deletions
diff --git a/src/mesa/pipe/failover/fo_context.c b/src/mesa/pipe/failover/fo_context.c
new file mode 100644
index 0000000000..b88f1b466c
--- /dev/null
+++ b/src/mesa/pipe/failover/fo_context.c
@@ -0,0 +1,155 @@
+/**************************************************************************
+ *
+ * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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 TUNGSTEN GRAPHICS 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.
+ *
+ **************************************************************************/
+
+
+#include "pipe/p_defines.h"
+#include "pipe/p_winsys.h"
+#include "pipe/p_util.h"
+#include "pipe/p_context.h"
+
+#include "fo_context.h"
+#include "fo_winsys.h"
+
+
+
+static void failover_destroy( struct pipe_context *pipe )
+{
+ struct failover_context *failover = failover_context( pipe );
+
+ free( failover );
+}
+
+
+
+static boolean failover_draw_elements( struct pipe_context *pipe,
+ struct pipe_buffer_handle *indexBuffer,
+ unsigned indexSize,
+ unsigned prim, unsigned start, unsigned count)
+{
+ struct failover_context *failover = failover_context( pipe );
+
+ /* If there has been any statechange since last time, try hardware
+ * rendering again:
+ */
+ if (failover->dirty) {
+ failover->mode = FO_HW;
+ }
+
+ /* Try hardware:
+ */
+ if (failover->mode == FO_HW) {
+ if (!failover->hw->draw_elements( failover->hw,
+ indexBuffer,
+ indexSize,
+ prim,
+ start,
+ count )) {
+
+ failover->hw->flush( failover->hw, ~0 );
+ failover->mode = FO_SW;
+ }
+ }
+
+ /* Possibly try software:
+ */
+ if (failover->mode == FO_SW) {
+
+ if (failover->dirty)
+ failover_state_emit( failover );
+
+ failover->sw->draw_elements( failover->sw,
+ indexBuffer,
+ indexSize,
+ prim,
+ start,
+ count );
+
+ /* Be ready to switch back to hardware rendering without an
+ * intervening flush. Unlikely to be much performance impact to
+ * this:
+ */
+ failover->sw->flush( failover->sw, ~0 );
+ }
+
+ return TRUE;
+}
+
+
+static boolean failover_draw_arrays( struct pipe_context *pipe,
+ unsigned prim, unsigned start, unsigned count)
+{
+ return failover_draw_elements(pipe, NULL, 0, prim, start, count);
+}
+
+
+
+struct pipe_context *failover_create( struct pipe_context *hw,
+ struct pipe_context *sw )
+{
+ struct failover_context *failover = CALLOC_STRUCT(failover_context);
+ if (failover == NULL)
+ return NULL;
+
+ failover->pipe.winsys = hw->winsys;
+ failover->pipe.destroy = failover_destroy;
+ failover->pipe.supported_formats = hw->supported_formats;
+ failover->pipe.max_texture_size = hw->max_texture_size;
+ failover->pipe.get_name = hw->get_name;
+ failover->pipe.get_vendor = hw->get_vendor;
+
+ failover->pipe.draw_arrays = failover_draw_arrays;
+ failover->pipe.draw_elements = failover_draw_elements;
+ failover->pipe.clear = hw->clear;
+
+ /* No software occlusion fallback (or other optional functionality)
+ * at this point - if the hardware doesn't support it, don't
+ * advertise it to the application.
+ */
+ failover->pipe.reset_occlusion_counter = hw->reset_occlusion_counter;
+ failover->pipe.get_occlusion_counter = hw->get_occlusion_counter;
+
+ failover_init_state_functions( failover );
+
+ failover->pipe.surface_alloc = hw->surface_alloc;
+ failover->pipe.get_tex_surface = hw->get_tex_surface;
+
+ failover->pipe.region_alloc = hw->region_alloc;
+ failover->pipe.region_release = hw->region_release;
+ failover->pipe.region_idle = hw->region_idle;
+ failover->pipe.region_map = hw->region_map;
+ failover->pipe.region_unmap = hw->region_unmap;
+ failover->pipe.region_data = hw->region_data;
+ failover->pipe.region_copy = hw->region_copy;
+ failover->pipe.region_fill = hw->region_fill;
+ failover->pipe.mipmap_tree_layout = hw->mipmap_tree_layout;
+ failover->pipe.flush = hw->flush;
+
+ failover->dirty = 0;
+
+ return &failover->pipe;
+}
+