/************************************************************************** * * 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" /* 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; 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.test_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 = GETENV("DRAW_FSE") != NULL; 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; if (draw->pt.test_fse) { 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; }