diff options
Diffstat (limited to 'src/gallium/auxiliary/draw/draw_pt.c')
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_pt.c | 209 |
1 files changed, 209 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..87ec6ae20c --- /dev/null +++ b/src/gallium/auxiliary/draw/draw_pt.c @@ -0,0 +1,209 @@ +/************************************************************************** + * + * 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 "draw/draw_context.h" +#include "draw/draw_private.h" +#include "draw/draw_pt.h" + +static unsigned trim( unsigned count, unsigned first, unsigned incr ) +{ + if (count < first) + return 0; + return count - (count - first) % incr; +} + + + +/* Overall we split things into: + * - 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. + */ +static boolean +draw_pt_arrays(struct draw_context *draw, + unsigned prim, + unsigned start, + unsigned count) +{ + struct draw_pt_front_end *frontend = NULL; + struct draw_pt_middle_end *middle = NULL; + unsigned opt = 0; + + /* Sanitize primitive length: + */ + { + unsigned first, incr; + draw_pt_split_prim(prim, &first, &incr); + count = trim(count, first, incr); + if (count < first) + return TRUE; + } + + if (!draw->force_passthrough) { + if (!draw->render) { + opt |= PT_PIPELINE; + } + + if (draw_need_pipeline(draw, + draw->rasterizer, + prim)) { + opt |= PT_PIPELINE; + } + + if (!draw->bypass_clipping && !draw->pt.test_fse) { + opt |= PT_CLIPTEST; + } + + if (!draw->rasterizer->bypass_vs) { + opt |= PT_SHADE; + } + } + + if (opt == 0) + middle = draw->pt.middle.fetch_emit; + else if (opt == PT_SHADE && !draw->pt.no_fse) + middle = draw->pt.middle.fetch_shade_emit; + else + middle = draw->pt.middle.general; + + + /* Pick the right frontend + */ + if (draw->pt.user.elts || (opt & PT_PIPELINE)) { + frontend = draw->pt.front.vcache; + } else { + frontend = draw->pt.front.varray; + } + + frontend->prepare( frontend, prim, middle, opt ); + + frontend->run(frontend, + 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.test_fse = debug_get_bool_option("DRAW_FSE", FALSE); + draw->pt.no_fse = debug_get_bool_option("DRAW_NO_FSE", FALSE); + + draw->pt.front.vcache = draw_pt_vcache( draw ); + if (!draw->pt.front.vcache) + return FALSE; + + draw->pt.front.varray = draw_pt_varray(draw); + if (!draw->pt.front.varray) + return FALSE; + + draw->pt.middle.fetch_emit = draw_pt_fetch_emit( draw ); + if (!draw->pt.middle.fetch_emit) + return FALSE; + + draw->pt.middle.fetch_shade_emit = draw_pt_middle_fse( draw ); + if (!draw->pt.middle.fetch_shade_emit) + return FALSE; + + draw->pt.middle.general = draw_pt_fetch_pipeline_or_emit( draw ); + if (!draw->pt.middle.general) + return FALSE; + + return TRUE; +} + + +void draw_pt_destroy( struct draw_context *draw ) +{ + if (draw->pt.middle.general) { + draw->pt.middle.general->destroy( draw->pt.middle.general ); + draw->pt.middle.general = NULL; + } + + 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.middle.fetch_shade_emit) { + draw->pt.middle.fetch_shade_emit->destroy( draw->pt.middle.fetch_shade_emit ); + draw->pt.middle.fetch_shade_emit = NULL; + } + + if (draw->pt.front.vcache) { + draw->pt.front.vcache->destroy( draw->pt.front.vcache ); + draw->pt.front.vcache = NULL; + } + + if (draw->pt.front.varray) { + draw->pt.front.varray->destroy( draw->pt.front.varray ); + draw->pt.front.varray = NULL; + } +} + + + + +/** + * Draw vertex arrays + * This is the main entrypoint into the drawing module. + * \param prim one of PIPE_PRIM_x + * \param start index of first vertex to draw + * \param count number of vertices to draw + */ +void +draw_arrays(struct draw_context *draw, unsigned prim, + unsigned start, unsigned count) +{ + unsigned reduced_prim = draw_pt_reduced_prim(prim); + if (reduced_prim != draw->reduced_prim) { + draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE ); + draw->reduced_prim = reduced_prim; + } + + /* drawing done here: */ + draw_pt_arrays(draw, prim, start, count); +} + +boolean draw_pt_get_edgeflag( struct draw_context *draw, + unsigned idx ) +{ + if (draw->pt.user.edgeflag) + return (draw->pt.user.edgeflag[idx/32] & (1 << (idx%32))) != 0; + else + return 1; +} |