i915_state_immediate.c revision e694f3fd4865f7e85cf1d4c9fe5789fad399dbc6 
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    */
57   LIS0 = i915->vbo_offset;
58
59   /* I915_NEW_VERTEX_SIZE
60    */
61   /* XXX do this where the vertex size is calculated! */
62   {
63      unsigned vertex_size = i915->current.vertex_info.size;
64
65      LIS1 = ((vertex_size << 24) |
66              (vertex_size << 16));
67   }
68
69   /* I915_NEW_VBO
70    */
71   if (1 ||
72       i915->current.immediate[I915_IMMEDIATE_S0] != LIS0 ||
73       i915->current.immediate[I915_IMMEDIATE_S1] != LIS1)
74   {
75      i915->current.immediate[I915_IMMEDIATE_S0] = LIS0;
76      i915->current.immediate[I915_IMMEDIATE_S1] = LIS1;
77      i915->hardware_dirty |= I915_HW_IMMEDIATE;
78   }
79}
80
81const struct i915_tracked_state i915_upload_S0S1 = {
82   "imm S0 S1",
83   upload_S0S1,
84   I915_NEW_VBO | I915_NEW_VERTEX_FORMAT
85};
86
87
88
89/***********************************************************************
90 * S4: Vertex format, rasterization state
91 */
92static void upload_S2S4(struct i915_context *i915)
93{
94   unsigned LIS2, LIS4;
95
96   /* I915_NEW_VERTEX_FORMAT
97    */
98   {
99      LIS2 = i915->current.vertex_info.hwfmt[1];
100      LIS4 = i915->current.vertex_info.hwfmt[0];
101      /*
102      debug_printf("LIS2: 0x%x  LIS4: 0x%x\n", LIS2, LIS4);
103      */
104      assert(LIS4); /* should never be zero? */
105   }
106
107   LIS4 |= i915->rasterizer->LIS4;
108
109   if (LIS2 != i915->current.immediate[I915_IMMEDIATE_S2] ||
110       LIS4 != i915->current.immediate[I915_IMMEDIATE_S4]) {
111
112      i915->current.immediate[I915_IMMEDIATE_S2] = LIS2;
113      i915->current.immediate[I915_IMMEDIATE_S4] = LIS4;
114      i915->hardware_dirty |= I915_HW_IMMEDIATE;
115   }
116}
117
118const struct i915_tracked_state i915_upload_S2S4 = {
119   "imm S2 S4",
120   upload_S2S4,
121   I915_NEW_RASTERIZER | I915_NEW_VERTEX_FORMAT
122};
123
124
125
126/***********************************************************************
127 */
128static void upload_S5(struct i915_context *i915)
129{
130   unsigned LIS5 = 0;
131
132   /* I915_NEW_DEPTH_STENCIL
133    */
134   LIS5 |= i915->depth_stencil->stencil_LIS5;
135   /* hope it's safe to set stencil ref value even if stencil test is disabled? */
136   LIS5 |= i915->stencil_ref.ref_value[0] << S5_STENCIL_REF_SHIFT;
137
138   /* I915_NEW_BLEND
139    */
140   LIS5 |= i915->blend->LIS5;
141
142#if 0
143   /* I915_NEW_RASTERIZER
144    */
145   if (i915->state.Polygon->OffsetFill) {
146      LIS5 |= S5_GLOBAL_DEPTH_OFFSET_ENABLE;
147   }
148#endif
149
150   if (LIS5 != i915->current.immediate[I915_IMMEDIATE_S5]) {
151      i915->current.immediate[I915_IMMEDIATE_S5] = LIS5;
152      i915->hardware_dirty |= I915_HW_IMMEDIATE;
153   }
154}
155
156const struct i915_tracked_state i915_upload_S5 = {
157   "imm S5",
158   upload_S5,
159   I915_NEW_DEPTH_STENCIL | I915_NEW_BLEND | I915_NEW_RASTERIZER
160};
161
162
163
164/***********************************************************************
165 */
166static void upload_S6(struct i915_context *i915)
167{
168   unsigned LIS6 = (2 << S6_TRISTRIP_PV_SHIFT);
169
170   /* I915_NEW_FRAMEBUFFER
171    */
172   if (i915->framebuffer.cbufs[0])
173      LIS6 |= S6_COLOR_WRITE_ENABLE;
174
175   /* I915_NEW_BLEND
176    */
177   LIS6 |= i915->blend->LIS6;
178
179   /* I915_NEW_DEPTH
180    */
181   LIS6 |= i915->depth_stencil->depth_LIS6;
182
183   if (LIS6 != i915->current.immediate[I915_IMMEDIATE_S6]) {
184      i915->current.immediate[I915_IMMEDIATE_S6] = LIS6;
185      i915->hardware_dirty |= I915_HW_IMMEDIATE;
186   }
187}
188
189const struct i915_tracked_state i915_upload_S6 = {
190   "imm s6",
191   upload_S6,
192   I915_NEW_BLEND | I915_NEW_DEPTH_STENCIL | I915_NEW_FRAMEBUFFER
193};
194
195
196
197/***********************************************************************
198 */
199static void upload_S7(struct i915_context *i915)
200{
201   unsigned LIS7;
202
203   /* I915_NEW_RASTERIZER
204    */
205   LIS7 = i915->rasterizer->LIS7;
206
207   if (LIS7 != i915->current.immediate[I915_IMMEDIATE_S7]) {
208      i915->current.immediate[I915_IMMEDIATE_S7] = LIS7;
209      i915->hardware_dirty |= I915_HW_IMMEDIATE;
210   }
211}
212
213const struct i915_tracked_state i915_upload_S7 = {
214   "imm S7",
215   upload_S7,
216   I915_NEW_RASTERIZER
217};
218
219
220
221/***********************************************************************
222 */
223static const struct i915_tracked_state *atoms[] = {
224   &i915_upload_S0S1,
225   &i915_upload_S2S4,
226   &i915_upload_S5,
227   &i915_upload_S6,
228   &i915_upload_S7
229};
230
231static void update_immediate(struct i915_context *i915)
232{
233   int i;
234
235   for (i = 0; i < Elements(atoms); i++)
236      if (i915->dirty & atoms[i]->dirty)
237         atoms[i]->update(i915);
238}
239
240struct i915_tracked_state i915_hw_immediate = {
241   "immediate",
242   update_immediate,
243   ~0 /* all state atoms, becuase we do internal checking */
244};
245