diff options
Diffstat (limited to 'src/gallium/auxiliary/draw/draw_pt.c')
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_pt.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/draw/draw_pt.c b/src/gallium/auxiliary/draw/draw_pt.c new file mode 100644 index 0000000000..219b563422 --- /dev/null +++ b/src/gallium/auxiliary/draw/draw_pt.c @@ -0,0 +1,206 @@ +/************************************************************************** + * + * Copyright 2007 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. + * + **************************************************************************/ + + /* + * Authors: + * Keith Whitwell <keith@tungstengraphics.com> + */ + +#include "pipe/p_util.h" +#include "draw/draw_context.h" +#include "draw/draw_private.h" +#include "draw/draw_pt.h" + + +static boolean too_many_verts( struct draw_context *draw, + unsigned verts ) +{ + return verts < 1024; +} + +static boolean too_many_elts( struct draw_context *draw, + unsigned elts ) +{ + return elts < (16 * 1024); +} + + +boolean +draw_pt_arrays(struct draw_context *draw, + unsigned prim, + unsigned start, + unsigned count) +{ + const boolean pipeline = draw_need_pipeline(draw); + const boolean cliptest = !draw->rasterizer->bypass_clipping; + const boolean shading = !draw->rasterizer->bypass_vs; + struct draw_pt_front_end *frontend = NULL; + struct draw_pt_middle_end *middle = NULL; + + + /* Overall we do: + * - frontend -- prepare fetch_elts, draw_elts - eg vcache + * - middle -- fetch, shade, cliptest, viewport + * - pipeline -- the prim pipeline: clipping, wide lines, etc + * - backend -- the vbuf_render provided by the driver. + */ + + +#if 0 + if (!cliptest && !pipeline && !shading) { + /* This is the 'passthrough' path: + */ + /* Fetch user verts, emit hw verts: + */ + middle = draw->pt.middle.fetch_emit; + } + else if (!cliptest && !pipeline) { + /* Fetch user verts, run vertex shader, emit hw verts: + */ + middle = draw->pt.middle.fetch_shade_emit; + } + else if (!pipeline) { + /* Even though !pipeline, we have to run it to get clipping. We + * do know that the pipeline is just the clipping operation, but + * that probably doesn't help much. + * + * This is going to be the most important path for a lot of + * swtnl cards. + */ + /* Fetch user verts, + * run vertex shader, + * cliptest and viewport trasform + * if no clipped vertices, + * emit hw verts + * else + * run pipline + */ + middle = draw->pt.middle.fetch_shade_cliptest_pipeline_or_emit; + } + else if (!cliptest) { + /* Fetch user verts, run vertex shader, run pipeline: + */ + middle = draw->pt.middle.fetch_shade_pipeline; + } + else { + /* This is what we're currently always doing: + */ + /* Fetch user verts, run vertex shader, cliptest, run pipeline: + */ + middle = draw->pt.middle.fetch_shade_cliptest_pipeline; + } +#else + if (cliptest /*|| pipeline*/ || shading) + return FALSE; + + middle = draw->pt.middle.fetch_emit; +#endif + + + /* If !pipeline, need to make sure we respect the driver's limited + * capabilites to receive blocks of vertex data and elements. + */ +#if 0 + if (!pipeline) { + unsigned vertex_mode = passthrough; + unsigned nr_verts = count_vertices( draw, start, count ); + unsigned hw_prim = prim; + + if (is_elts(draw)) { + frontend = draw->pt.front.vcache; + hw_prim = reduced_prim(prim); + } + + if (too_many_verts(nr_verts)) { + /* if (is_verts(draw) && can_split(prim)) { + draw = draw_arrays_split; + } + else */ { + frontend = draw->pt.front.vcache; + hw_prim = reduced_prim(prim); + } + } + + if (too_many_elts(count)) { + + /* if (is_elts(draw) && can_split(prim)) { + draw = draw_elts_split; + } + else */ { + frontend = draw->pt.front.vcache; + hw_prim = reduced_prim(prim); + } + } + + if (!good_prim(hw_prim)) { + draw = draw->pt.front.vcache; + } + } +#else + frontend = draw->pt.front.vcache; +#endif + + frontend->prepare( frontend, middle ); + + frontend->run( frontend, + prim, + draw_pt_elt_func( draw ), + draw_pt_elt_ptr( draw, start ), + count ); + + frontend->finish( frontend ); + + return TRUE; +} + + +boolean draw_pt_init( struct draw_context *draw ) +{ + draw->pt.middle.fetch_emit = draw_pt_fetch_emit( draw ); + if (!draw->pt.middle.fetch_emit) + return FALSE; + + draw->pt.front.vcache = draw_pt_vcache(); + if (!draw->pt.front.vcache) + return FALSE; + + return TRUE; +} + + +void draw_pt_destroy( struct draw_context *draw ) +{ + if (draw->pt.middle.fetch_emit) { + draw->pt.middle.fetch_emit->destroy( draw->pt.middle.fetch_emit ); + draw->pt.middle.fetch_emit = NULL; + } + + if (draw->pt.front.vcache) { + draw->pt.front.vcache->destroy( draw->pt.front.vcache ); + draw->pt.front.vcache = NULL; + } +} |