brw_vs.c revision 4176025d463e7733dac19788b45b6472b65d62d4 
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#include "../glsl/ralloc.h"
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   void *mem_ctx;
51   int aux_size;
52   int i;
53
54   memset(&c, 0, sizeof(c));
55   memcpy(&c.key, key, sizeof(*key));
56
57   mem_ctx = ralloc_context(NULL);
58
59   brw_init_compile(brw, &c.func, mem_ctx);
60   c.vp = vp;
61
62   c.prog_data.outputs_written = vp->program.Base.OutputsWritten;
63   c.prog_data.inputs_read = vp->program.Base.InputsRead;
64
65   if (c.key.copy_edgeflag) {
66      c.prog_data.outputs_written |= BITFIELD64_BIT(VERT_RESULT_EDGE);
67      c.prog_data.inputs_read |= 1<<VERT_ATTRIB_EDGEFLAG;
68   }
69
70   /* Put dummy slots into the VUE for the SF to put the replaced
71    * point sprite coords in.  We shouldn't need these dummy slots,
72    * which take up precious URB space, but it would mean that the SF
73    * doesn't get nice aligned pairs of input coords into output
74    * coords, which would be a pain to handle.
75    */
76   for (i = 0; i < 8; i++) {
77      if (c.key.point_coord_replace & (1 << i))
78	 c.prog_data.outputs_written |= BITFIELD64_BIT(VERT_RESULT_TEX0 + i);
79   }
80
81   if (0) {
82      _mesa_fprint_program_opt(stdout, &c.vp->program.Base, PROG_PRINT_DEBUG,
83			       GL_TRUE);
84   }
85
86   /* Emit GEN4 code.
87    */
88   brw_vs_emit(&c);
89
90   /* get the program
91    */
92   program = brw_get_program(&c.func, &program_size);
93
94   /* We upload from &c.prog_data including the constant_map assuming
95    * they're packed together.  It would be nice to have a
96    * compile-time assert macro here.
97    */
98   assert(c.constant_map == (int8_t *)&c.prog_data +
99	  sizeof(c.prog_data));
100   assert(ctx->Const.VertexProgram.MaxNativeParameters ==
101	  ARRAY_SIZE(c.constant_map));
102   (void) ctx;
103
104   aux_size = sizeof(c.prog_data);
105   /* constant_map */
106   aux_size += c.vp->program.Base.Parameters->NumParameters;
107
108   drm_intel_bo_unreference(brw->vs.prog_bo);
109   brw->vs.prog_bo = brw_upload_cache(&brw->cache, BRW_VS_PROG,
110				      &c.key, sizeof(c.key),
111				      program, program_size,
112				      &c.prog_data, aux_size,
113				      &brw->vs.prog_data);
114   ralloc_free(mem_ctx);
115}
116
117
118static void brw_upload_vs_prog(struct brw_context *brw)
119{
120   struct gl_context *ctx = &brw->intel.ctx;
121   struct brw_vs_prog_key key;
122   struct brw_vertex_program *vp =
123      (struct brw_vertex_program *)brw->vertex_program;
124   int i;
125
126   memset(&key, 0, sizeof(key));
127
128   /* Just upload the program verbatim for now.  Always send it all
129    * the inputs it asks for, whether they are varying or not.
130    */
131   key.program_string_id = vp->id;
132   key.nr_userclip = brw_count_bits(ctx->Transform.ClipPlanesEnabled);
133   key.copy_edgeflag = (ctx->Polygon.FrontMode != GL_FILL ||
134			ctx->Polygon.BackMode != GL_FILL);
135   key.two_side_color = (ctx->Light.Enabled && ctx->Light.Model.TwoSide);
136
137   /* _NEW_LIGHT | _NEW_BUFFERS */
138   key.clamp_vertex_color = ctx->Light._ClampVertexColor;
139
140   /* _NEW_POINT */
141   if (ctx->Point.PointSprite) {
142      for (i = 0; i < 8; i++) {
143	 if (ctx->Point.CoordReplace[i])
144	    key.point_coord_replace |= (1 << i);
145      }
146   }
147
148   /* BRW_NEW_VERTICES */
149   for (i = 0; i < VERT_ATTRIB_MAX; i++) {
150      if (vp->program.Base.InputsRead & (1 << i) &&
151	  brw->vb.inputs[i].glarray->Type == GL_FIXED) {
152	 key.gl_fixed_input_size[i] = brw->vb.inputs[i].glarray->Size;
153      }
154   }
155
156   /* Make an early check for the key.
157    */
158   drm_intel_bo_unreference(brw->vs.prog_bo);
159   brw->vs.prog_bo = brw_search_cache(&brw->cache, BRW_VS_PROG,
160				      &key, sizeof(key),
161				      &brw->vs.prog_data);
162   if (brw->vs.prog_bo == NULL)
163      do_vs_prog(brw, vp, &key);
164   brw->vs.constant_map = ((int8_t *)brw->vs.prog_data +
165			   sizeof(*brw->vs.prog_data));
166}
167
168
169/* See brw_vs.c:
170 */
171const struct brw_tracked_state brw_vs_prog = {
172   .dirty = {
173      .mesa  = (_NEW_TRANSFORM | _NEW_POLYGON | _NEW_POINT | _NEW_LIGHT |
174		_NEW_BUFFERS),
175      .brw   = (BRW_NEW_VERTEX_PROGRAM |
176		BRW_NEW_VERTICES),
177      .cache = 0
178   },
179   .prepare = brw_upload_vs_prog
180};
181