i965: Move clip program compilation to the compiler
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
This commit is contained in:
Jason Ekstrand
163
src/intel/compiler/brw_clip.h
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163
src/intel/compiler/brw_clip.h
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/*
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Copyright (C) Intel Corp. 2006. All Rights Reserved.
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Intel funded Tungsten Graphics to
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develop this 3D driver.
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice (including the
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next paragraph) shall be included in all copies or substantial
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portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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**********************************************************************/
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/*
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* Authors:
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* Keith Whitwell <keithw@vmware.com>
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*/
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#ifndef BRW_CLIP_H
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#define BRW_CLIP_H
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#include "brw_compiler.h"
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#include "brw_eu.h"
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/* Initial 3 verts, plus at most 6 additional verts from intersections
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* with fixed planes, plus at most 8 additional verts from intersections
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* with user clip planes
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*/
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#define MAX_VERTS (3+6+8)
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#define PRIM_MASK (0x1f)
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struct brw_clip_compile {
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struct brw_codegen func;
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struct brw_clip_prog_key key;
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struct brw_clip_prog_data prog_data;
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struct {
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struct brw_reg R0;
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struct brw_reg vertex[MAX_VERTS];
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struct brw_reg t;
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struct brw_reg t0, t1;
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struct brw_reg dp0, dp1;
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struct brw_reg dpPrev;
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struct brw_reg dp;
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struct brw_reg loopcount;
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struct brw_reg nr_verts;
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struct brw_reg planemask;
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struct brw_reg inlist;
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struct brw_reg outlist;
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struct brw_reg freelist;
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struct brw_reg dir;
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struct brw_reg tmp0, tmp1;
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struct brw_reg offset;
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struct brw_reg fixed_planes;
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struct brw_reg plane_equation;
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struct brw_reg ff_sync;
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/* Bitmask indicating which coordinate attribute should be used for
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* comparison to each clipping plane. A 0 indicates that VARYING_SLOT_POS
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* should be used, because it's one of the fixed +/- x/y/z planes that
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* constitute the bounds of the view volume. A 1 indicates that
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* VARYING_SLOT_CLIP_VERTEX should be used (if available) since it's a user-
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* defined clipping plane.
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*/
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struct brw_reg vertex_src_mask;
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/* Offset into the vertex of the current plane's clipdistance value */
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struct brw_reg clipdistance_offset;
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} reg;
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/* Number of registers storing VUE data */
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GLuint nr_regs;
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GLuint first_tmp;
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GLuint last_tmp;
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bool need_direction;
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struct brw_vue_map vue_map;
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};
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/**
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* True if the given varying is one of the outputs of the vertex shader.
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*/
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static inline bool brw_clip_have_varying(struct brw_clip_compile *c,
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GLuint varying)
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{
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return (c->key.attrs & BITFIELD64_BIT(varying)) ? 1 : 0;
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}
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/* Points are only culled, so no need for a clip routine, however it
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* works out easier to have a dummy one.
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*/
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void brw_emit_unfilled_clip( struct brw_clip_compile *c );
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void brw_emit_tri_clip( struct brw_clip_compile *c );
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void brw_emit_line_clip( struct brw_clip_compile *c );
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void brw_emit_point_clip( struct brw_clip_compile *c );
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/* brw_clip_tri.c, for use by the unfilled clip routine:
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*/
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void brw_clip_tri_init_vertices( struct brw_clip_compile *c );
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void brw_clip_tri_flat_shade( struct brw_clip_compile *c );
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void brw_clip_tri( struct brw_clip_compile *c );
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void brw_clip_tri_emit_polygon( struct brw_clip_compile *c );
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void brw_clip_tri_alloc_regs( struct brw_clip_compile *c,
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GLuint nr_verts );
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/* Utils:
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*/
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void brw_clip_interp_vertex( struct brw_clip_compile *c,
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struct brw_indirect dest_ptr,
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struct brw_indirect v0_ptr, /* from */
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struct brw_indirect v1_ptr, /* to */
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struct brw_reg t0,
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bool force_edgeflag );
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void brw_clip_init_planes( struct brw_clip_compile *c );
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void brw_clip_emit_vue(struct brw_clip_compile *c,
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struct brw_indirect vert,
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enum brw_urb_write_flags flags,
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GLuint header);
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void brw_clip_kill_thread(struct brw_clip_compile *c);
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struct brw_reg brw_clip_plane_stride( struct brw_clip_compile *c );
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struct brw_reg brw_clip_plane0_address( struct brw_clip_compile *c );
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void brw_clip_copy_flatshaded_attributes( struct brw_clip_compile *c,
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GLuint to, GLuint from );
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void brw_clip_init_clipmask( struct brw_clip_compile *c );
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struct brw_reg get_tmp( struct brw_clip_compile *c );
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void brw_clip_project_position(struct brw_clip_compile *c,
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struct brw_reg pos );
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void brw_clip_ff_sync(struct brw_clip_compile *c);
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void brw_clip_init_ff_sync(struct brw_clip_compile *c);
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#endif
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