brw_vs.c revision d22e2ebe35ef9d33ec5f7a67f903f36bcd9fbc91 
1/*
2 Copyright (C) Intel Corp.  2006.  All Rights Reserved.
3 Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
4 develop this 3D driver.
5
6 Permission is hereby granted, free of charge, to any person obtaining
7 a copy of this software and associated documentation files (the
8 "Software"), to deal in the Software without restriction, including
9 without limitation the rights to use, copy, modify, merge, publish,
10 distribute, sublicense, and/or sell copies of the Software, and to
11 permit persons to whom the Software is furnished to do so, subject to
12 the following conditions:
13
14 The above copyright notice and this permission notice (including the
15 next paragraph) shall be included in all copies or substantial
16 portions of the Software.
17
18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
22 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25
26 **********************************************************************/
27 /*
28  * Authors:
29  *   Keith Whitwell <keith@tungstengraphics.com>
30  */
31
32
33#include "brw_context.h"
34#include "brw_vs.h"
35#include "brw_util.h"
36#include "brw_state.h"
37#include "program/prog_print.h"
38#include "program/prog_parameter.h"
39
40
41
42static void do_vs_prog( struct brw_context *brw,
43			struct brw_vertex_program *vp,
44			struct brw_vs_prog_key *key )
45{
46   struct gl_context *ctx = &brw->intel.ctx;
47   GLuint program_size;
48   const GLuint *program;
49   struct brw_vs_compile c;
50   int aux_size;
51   int i;
52
53   memset(&c, 0, sizeof(c));
54   memcpy(&c.key, key, sizeof(*key));
55
56   brw_init_compile(brw, &c.func);
57   c.vp = vp;
58
59   c.prog_data.outputs_written = vp->program.Base.OutputsWritten;
60   c.prog_data.inputs_read = vp->program.Base.InputsRead;
61
62   if (c.key.copy_edgeflag) {
63      c.prog_data.outputs_written |= BITFIELD64_BIT(VERT_RESULT_EDGE);
64      c.prog_data.inputs_read |= 1<<VERT_ATTRIB_EDGEFLAG;
65   }
66
67   /* Put dummy slots into the VUE for the SF to put the replaced
68    * point sprite coords in.  We shouldn't need these dummy slots,
69    * which take up precious URB space, but it would mean that the SF
70    * doesn't get nice aligned pairs of input coords into output
71    * coords, which would be a pain to handle.
72    */
73   for (i = 0; i < 8; i++) {
74      if (c.key.point_coord_replace & (1 << i))
75	 c.prog_data.outputs_written |= BITFIELD64_BIT(VERT_RESULT_TEX0 + i);
76   }
77
78   if (0) {
79      _mesa_fprint_program_opt(stdout, &c.vp->program.Base, PROG_PRINT_DEBUG,
80			       GL_TRUE);
81   }
82
83   /* Emit GEN4 code.
84    */
85   brw_vs_emit(&c);
86
87   /* get the program
88    */
89   program = brw_get_program(&c.func, &program_size);
90
91   /* We upload from &c.prog_data including the constant_map assuming
92    * they're packed together.  It would be nice to have a
93    * compile-time assert macro here.
94    */
95   assert(c.constant_map == (int8_t *)&c.prog_data +
96	  sizeof(c.prog_data));
97   assert(ctx->Const.VertexProgram.MaxNativeParameters ==
98	  ARRAY_SIZE(c.constant_map));
99   (void) ctx;
100
101   aux_size = sizeof(c.prog_data);
102   /* constant_map */
103   aux_size += c.vp->program.Base.Parameters->NumParameters;
104
105   drm_intel_bo_unreference(brw->vs.prog_bo);
106   brw->vs.prog_bo = brw_upload_cache_with_auxdata(&brw->cache, BRW_VS_PROG,
107						   &c.key, sizeof(c.key),
108						   NULL, 0,
109						   program, program_size,
110						   &c.prog_data,
111						   aux_size,
112						   &brw->vs.prog_data);
113}
114
115
116static void brw_upload_vs_prog(struct brw_context *brw)
117{
118   struct gl_context *ctx = &brw->intel.ctx;
119   struct brw_vs_prog_key key;
120   struct brw_vertex_program *vp =
121      (struct brw_vertex_program *)brw->vertex_program;
122   int i;
123
124   memset(&key, 0, sizeof(key));
125
126   /* Just upload the program verbatim for now.  Always send it all
127    * the inputs it asks for, whether they are varying or not.
128    */
129   key.program_string_id = vp->id;
130   key.nr_userclip = brw_count_bits(ctx->Transform.ClipPlanesEnabled);
131   key.copy_edgeflag = (ctx->Polygon.FrontMode != GL_FILL ||
132			ctx->Polygon.BackMode != GL_FILL);
133   key.two_side_color = (ctx->Light.Enabled && ctx->Light.Model.TwoSide);
134
135   /* _NEW_LIGHT | _NEW_BUFFERS */
136   key.clamp_vertex_color = ctx->Light._ClampVertexColor;
137
138   /* _NEW_POINT */
139   if (ctx->Point.PointSprite) {
140      for (i = 0; i < 8; i++) {
141	 if (ctx->Point.CoordReplace[i])
142	    key.point_coord_replace |= (1 << i);
143      }
144   }
145
146   /* Make an early check for the key.
147    */
148   drm_intel_bo_unreference(brw->vs.prog_bo);
149   brw->vs.prog_bo = brw_search_cache(&brw->cache, BRW_VS_PROG,
150				      &key, sizeof(key),
151				      NULL, 0,
152				      &brw->vs.prog_data);
153   if (brw->vs.prog_bo == NULL)
154      do_vs_prog(brw, vp, &key);
155   brw->vs.constant_map = ((int8_t *)brw->vs.prog_data +
156			   sizeof(*brw->vs.prog_data));
157}
158
159
160/* See brw_vs.c:
161 */
162const struct brw_tracked_state brw_vs_prog = {
163   .dirty = {
164      .mesa  = (_NEW_TRANSFORM | _NEW_POLYGON | _NEW_POINT | _NEW_LIGHT |
165		_NEW_BUFFERS),
166      .brw   = BRW_NEW_VERTEX_PROGRAM,
167      .cache = 0
168   },
169   .prepare = brw_upload_vs_prog
170};
171