i915_state_immediate.c revision bc88c95990f871a206a8fe93e7541f1f41841f7e 
1/**************************************************************************
2 *
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * 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, sub license, 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 portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * 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 "i915_state_inlines.h"
33#include "i915_context.h"
34#include "i915_state.h"
35#include "i915_reg.h"
36#include "util/u_memory.h"
37
38
39/* All state expressable with the LOAD_STATE_IMMEDIATE_1 packet.
40 * Would like to opportunistically recombine all these fragments into
41 * a single packet containing only what has changed, but for now emit
42 * as multiple packets.
43 */
44
45
46
47
48/***********************************************************************
49 * S0,S1: Vertex buffer state.
50 */
51static void upload_S0S1(struct i915_context *i915)
52{
53   unsigned LIS0, LIS1;
54
55   /* I915_NEW_VBO */
56   /* TODO: re-use vertex buffers here? */
57   LIS0 = i915->vbo_offset;
58
59   /* I915_NEW_VERTEX_SIZE -- do this where the vertex size is calculated!
60    */
61   {
62      unsigned vertex_size = i915->current.vertex_info.size;
63
64      LIS1 = ((vertex_size << 24) |
65	      (vertex_size << 16));
66   }
67
68   /* I915_NEW_VBO */
69   /* TODO: use a vertex generation number to track vbo changes */
70   if (1 ||
71       i915->current.immediate[I915_IMMEDIATE_S0] != LIS0 ||
72       i915->current.immediate[I915_IMMEDIATE_S1] != LIS1)
73   {
74      i915->current.immediate[I915_IMMEDIATE_S0] = LIS0;
75      i915->current.immediate[I915_IMMEDIATE_S1] = LIS1;
76      i915->hardware_dirty |= I915_HW_IMMEDIATE;
77   }
78}
79
80const struct i915_tracked_state i915_upload_S0S1 = {
81   I915_NEW_VBO | I915_NEW_VERTEX_FORMAT,
82   upload_S0S1
83};
84
85
86
87
88/***********************************************************************
89 * S4: Vertex format, rasterization state
90 */
91static void upload_S2S4(struct i915_context *i915)
92{
93   unsigned LIS2, LIS4;
94
95   /* I915_NEW_VERTEX_FORMAT */
96   {
97      LIS2 = i915->current.vertex_info.hwfmt[1];
98      LIS4 = i915->current.vertex_info.hwfmt[0];
99      /*
100      debug_printf("LIS2: 0x%x  LIS4: 0x%x\n", LIS2, LIS4);
101      */
102      assert(LIS4); /* should never be zero? */
103   }
104
105   LIS4 |= i915->rasterizer->LIS4;
106
107   if (LIS2 != i915->current.immediate[I915_IMMEDIATE_S2] ||
108       LIS4 != i915->current.immediate[I915_IMMEDIATE_S4]) {
109
110      i915->current.immediate[I915_IMMEDIATE_S2] = LIS2;
111      i915->current.immediate[I915_IMMEDIATE_S4] = LIS4;
112      i915->hardware_dirty |= I915_HW_IMMEDIATE;
113   }
114}
115
116
117const struct i915_tracked_state i915_upload_S2S4 = {
118   I915_NEW_RASTERIZER | I915_NEW_VERTEX_FORMAT,
119   upload_S2S4
120};
121
122
123
124/***********************************************************************
125 *
126 */
127static void upload_S5( struct i915_context *i915 )
128{
129   unsigned LIS5 = 0;
130
131   LIS5 |= i915->depth_stencil->stencil_LIS5;
132   /* hope it's safe to set stencil ref value even if stencil test is disabled? */
133   LIS5 |= i915->stencil_ref.ref_value[0] << S5_STENCIL_REF_SHIFT;
134
135   LIS5 |= i915->blend->LIS5;
136
137#if 0
138   /* I915_NEW_RASTERIZER */
139   if (i915->state.Polygon->OffsetFill) {
140      LIS5 |= S5_GLOBAL_DEPTH_OFFSET_ENABLE;
141   }
142#endif
143
144
145   if (LIS5 != i915->current.immediate[I915_IMMEDIATE_S5]) {
146      i915->current.immediate[I915_IMMEDIATE_S5] = LIS5;
147      i915->hardware_dirty |= I915_HW_IMMEDIATE;
148   }
149}
150
151const struct i915_tracked_state i915_upload_S5 = {
152   (I915_NEW_DEPTH_STENCIL | I915_NEW_BLEND | I915_NEW_RASTERIZER),
153   upload_S5
154};
155
156
157/***********************************************************************
158 */
159static void upload_S6( struct i915_context *i915 )
160{
161   unsigned LIS6 = (2 << S6_TRISTRIP_PV_SHIFT);
162
163   /* I915_NEW_FRAMEBUFFER
164    */
165   if (i915->framebuffer.cbufs[0])
166      LIS6 |= S6_COLOR_WRITE_ENABLE;
167
168   /* I915_NEW_BLEND
169    */
170   LIS6 |= i915->blend->LIS6;
171
172   /* I915_NEW_DEPTH
173    */
174   LIS6 |= i915->depth_stencil->depth_LIS6;
175
176   if (LIS6 != i915->current.immediate[I915_IMMEDIATE_S6]) {
177      i915->current.immediate[I915_IMMEDIATE_S6] = LIS6;
178      i915->hardware_dirty |= I915_HW_IMMEDIATE;
179   }
180}
181
182const struct i915_tracked_state i915_upload_S6 = {
183   I915_NEW_BLEND | I915_NEW_DEPTH_STENCIL | I915_NEW_FRAMEBUFFER,
184   upload_S6
185};
186
187
188/***********************************************************************
189 */
190static void upload_S7( struct i915_context *i915 )
191{
192   unsigned LIS7;
193
194   /* I915_NEW_RASTERIZER
195    */
196   LIS7 = i915->rasterizer->LIS7;
197
198   if (LIS7 != i915->current.immediate[I915_IMMEDIATE_S7]) {
199      i915->current.immediate[I915_IMMEDIATE_S7] = LIS7;
200      i915->hardware_dirty |= I915_HW_IMMEDIATE;
201   }
202}
203
204const struct i915_tracked_state i915_upload_S7 = {
205   I915_NEW_RASTERIZER,
206   upload_S7
207};
208
209
210static const struct i915_tracked_state *atoms[] = {
211   &i915_upload_S0S1,
212   &i915_upload_S2S4,
213   &i915_upload_S5,
214   &i915_upload_S6,
215   &i915_upload_S7
216};
217
218/*
219 */
220void i915_update_immediate( struct i915_context *i915 )
221{
222   int i;
223
224   for (i = 0; i < Elements(atoms); i++)
225      if (i915->dirty & atoms[i]->dirty)
226	 atoms[i]->update( i915 );
227}
228