diff options
Diffstat (limited to 'src/gallium/drivers/failover/fo_context.c')
| -rw-r--r-- | src/gallium/drivers/failover/fo_context.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/src/gallium/drivers/failover/fo_context.c b/src/gallium/drivers/failover/fo_context.c new file mode 100644 index 0000000000..10c4ffc209 --- /dev/null +++ b/src/gallium/drivers/failover/fo_context.c @@ -0,0 +1,159 @@ +/************************************************************************** + * + * 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 "util/u_memory.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 *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, NULL ); + 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, NULL ); + } + + 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->hw = hw; + failover->sw = sw; + failover->pipe.winsys = hw->winsys; + failover->pipe.screen = hw->screen; + failover->pipe.destroy = failover_destroy; +#if 0 + failover->pipe.is_format_supported = hw->is_format_supported; + failover->pipe.get_name = hw->get_name; + failover->pipe.get_vendor = hw->get_vendor; + failover->pipe.get_param = hw->get_param; + failover->pipe.get_paramf = hw->get_paramf; +#endif + + 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.begin_query = hw->begin_query; + failover->pipe.end_query = hw->end_query; + + failover_init_state_functions( failover ); + + failover->pipe.surface_copy = hw->surface_copy; + failover->pipe.surface_fill = hw->surface_fill; + +#if 0 + failover->pipe.texture_create = hw->texture_create; + failover->pipe.texture_release = hw->texture_release; + failover->pipe.get_tex_surface = hw->get_tex_surface; + failover->pipe.texture_update = hw->texture_update; +#endif + + failover->pipe.flush = hw->flush; + + failover->dirty = 0; + + return &failover->pipe; +} + |