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
114static void
115brw_upload_vs_ubo_surfaces(struct brw_context *brw)
116{
117   struct gl_context *ctx = &brw->intel.ctx;
118   /* _NEW_PROGRAM */
119   struct gl_shader_program *prog = ctx->Shader.CurrentVertexProgram;
120
121   if (!prog)
122      return;
123
124   brw_upload_ubo_surfaces(brw, prog->_LinkedShaders[MESA_SHADER_VERTEX],
125			   &brw->vs.surf_offset[SURF_INDEX_VS_UBO(0)]);
126}
127
128const struct brw_tracked_state brw_vs_ubo_surfaces = {
129   .dirty = {
130      .mesa = (_NEW_PROGRAM |
131	       _NEW_BUFFER_OBJECT),
132      .brw = BRW_NEW_BATCH,
133      .cache = 0,
134   },
135   .emit = brw_upload_vs_ubo_surfaces,
136};
137
138/**
139 * Constructs the binding table for the WM surface state, which maps unit
140 * numbers to surface state objects.
141 */
142static void
143brw_vs_upload_binding_table(struct brw_context *brw)
144{
145   uint32_t *bind;
146   int i;
147
148   /* CACHE_NEW_VS_PROG: Skip making a binding table if we don't use textures or
149    * pull constants.
150    */
151   if (brw->vs.prog_data->num_surfaces == 0) {
152      if (brw->vs.bind_bo_offset != 0) {
153	 brw->state.dirty.brw |= BRW_NEW_VS_BINDING_TABLE;
154	 brw->vs.bind_bo_offset = 0;
155      }
156      return;
157   }
158
159   /* Might want to calculate nr_surfaces first, to avoid taking up so much
160    * space for the binding table.
161    */
162   bind = brw_state_batch(brw, AUB_TRACE_BINDING_TABLE,
163			  sizeof(uint32_t) * BRW_MAX_VS_SURFACES,
164			  32, &brw->vs.bind_bo_offset);
165
166   /* BRW_NEW_SURFACES and BRW_NEW_VS_CONSTBUF */
167   for (i = 0; i < BRW_MAX_VS_SURFACES; i++) {
168      bind[i] = brw->vs.surf_offset[i];
169   }
170
171   brw->state.dirty.brw |= BRW_NEW_VS_BINDING_TABLE;
172}
173
174const struct brw_tracked_state brw_vs_binding_table = {
175   .dirty = {
176      .mesa = 0,
177      .brw = (BRW_NEW_BATCH |
178	      BRW_NEW_VS_CONSTBUF |
179	      BRW_NEW_SURFACES),
180      .cache = CACHE_NEW_VS_PROG
181   },
182   .emit = brw_vs_upload_binding_table,
183};
184