brw_vs_surface_state.c revision 5bffbd7ba2ba2ff21469b2a69a0ed67f0802fec7 
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#include "main/mtypes.h"
33#include "program/prog_parameter.h"
34
35#include "brw_context.h"
36#include "brw_state.h"
37
38/* Creates a new VS constant buffer reflecting the current VS program's
39 * constants, if needed by the VS program.
40 *
41 * Otherwise, constants go through the CURBEs using the brw_constant_buffer
42 * state atom.
43 */
44static void
45brw_upload_vs_pull_constants(struct brw_context *brw)
46{
47   struct gl_context *ctx = &brw->intel.ctx;
48   struct intel_context *intel = &brw->intel;
49   /* BRW_NEW_VERTEX_PROGRAM */
50   struct brw_vertex_program *vp =
51      (struct brw_vertex_program *) brw->vertex_program;
52   const struct gl_program_parameter_list *params = vp->program.Base.Parameters;
53   int i;
54
55   if (vp->program.IsNVProgram)
56      _mesa_load_tracked_matrices(ctx);
57
58   /* Updates the ParamaterValues[i] pointers for all parameters of the
59    * basic type of PROGRAM_STATE_VAR.
60    */
61   _mesa_load_state_parameters(&brw->intel.ctx, vp->program.Base.Parameters);
62
63   /* CACHE_NEW_VS_PROG */
64   if (!brw->vs.prog_data->nr_pull_params) {
65      if (brw->vs.const_bo) {
66	 drm_intel_bo_unreference(brw->vs.const_bo);
67	 brw->vs.const_bo = NULL;
68	 brw->vs.surf_offset[SURF_INDEX_VERT_CONST_BUFFER] = 0;
69	 brw->state.dirty.brw |= BRW_NEW_VS_CONSTBUF;
70      }
71      return;
72   }
73
74   /* _NEW_PROGRAM_CONSTANTS */
75   drm_intel_bo_unreference(brw->vs.const_bo);
76   brw->vs.const_bo = drm_intel_bo_alloc(intel->bufmgr, "vp_const_buffer",
77					 brw->vs.prog_data->nr_pull_params * 4,
78					 64);
79
80   drm_intel_gem_bo_map_gtt(brw->vs.const_bo);
81   for (i = 0; i < brw->vs.prog_data->nr_pull_params; i++) {
82      memcpy(brw->vs.const_bo->virtual + i * 4,
83	     brw->vs.prog_data->pull_param[i],
84	     4);
85   }
86
87   if (0) {
88      for (i = 0; i < params->NumParameters; i++) {
89	 float *row = (float *)brw->vs.const_bo->virtual + i * 4;
90	 printf("vs const surface %3d: %4.3f %4.3f %4.3f %4.3f\n",
91		i, row[0], row[1], row[2], row[3]);
92      }
93   }
94
95   drm_intel_gem_bo_unmap_gtt(brw->vs.const_bo);
96
97   const int surf = SURF_INDEX_VERT_CONST_BUFFER;
98   intel->vtbl.create_constant_surface(brw, brw->vs.const_bo, 0,
99				       params->NumParameters,
100				       &brw->vs.surf_offset[surf]);
101
102   brw->state.dirty.brw |= BRW_NEW_VS_CONSTBUF;
103}
104
105const struct brw_tracked_state brw_vs_pull_constants = {
106   .dirty = {
107      .mesa = (_NEW_PROGRAM_CONSTANTS),
108      .brw = (BRW_NEW_BATCH | BRW_NEW_VERTEX_PROGRAM),
109      .cache = CACHE_NEW_VS_PROG,
110   },
111   .emit = brw_upload_vs_pull_constants,
112};
113
114/**
115 * Constructs the binding table for the WM surface state, which maps unit
116 * numbers to surface state objects.
117 */
118static void
119brw_vs_upload_binding_table(struct brw_context *brw)
120{
121   uint32_t *bind;
122   int i;
123
124   /* CACHE_NEW_VS_PROG: Skip making a binding table if we don't use textures or
125    * pull constants.
126    */
127   if (brw->vs.prog_data->num_surfaces == 0) {
128      if (brw->vs.bind_bo_offset != 0) {
129	 brw->state.dirty.brw |= BRW_NEW_VS_BINDING_TABLE;
130	 brw->vs.bind_bo_offset = 0;
131      }
132      return;
133   }
134
135   /* Might want to calculate nr_surfaces first, to avoid taking up so much
136    * space for the binding table.
137    */
138   bind = brw_state_batch(brw, AUB_TRACE_BINDING_TABLE,
139			  sizeof(uint32_t) * BRW_MAX_VS_SURFACES,
140			  32, &brw->vs.bind_bo_offset);
141
142   /* BRW_NEW_SURFACES and BRW_NEW_VS_CONSTBUF */
143   for (i = 0; i < BRW_MAX_VS_SURFACES; i++) {
144      bind[i] = brw->vs.surf_offset[i];
145   }
146
147   brw->state.dirty.brw |= BRW_NEW_VS_BINDING_TABLE;
148}
149
150const struct brw_tracked_state brw_vs_binding_table = {
151   .dirty = {
152      .mesa = 0,
153      .brw = (BRW_NEW_BATCH |
154	      BRW_NEW_VS_CONSTBUF |
155	      BRW_NEW_SURFACES),
156      .cache = CACHE_NEW_VS_PROG
157   },
158   .emit = brw_vs_upload_binding_table,
159};
160