1/**************************************************************************
2 *
3 * Copyright 2003 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#include "i915_batch.h"
29#include "i915_state_inlines.h"
30#include "i915_context.h"
31#include "i915_reg.h"
32#include "i915_state.h"
33
34#include "util/u_memory.h"
35#include "util/u_pack_color.h"
36
37
38/* State that we have chosen to store in the DYNAMIC segment of the
39 * i915 indirect state mechanism.
40 *
41 * Can't cache these in the way we do the static state, as there is no
42 * start/size in the command packet, instead an 'end' value that gets
43 * incremented.
44 *
45 * Additionally, there seems to be a requirement to re-issue the full
46 * (active) state every time a 4kb boundary is crossed.
47 */
48
49static INLINE void set_dynamic(struct i915_context *i915,
50                               unsigned offset,
51                               const unsigned state)
52{
53   if (i915->current.dynamic[offset] == state)
54      return;
55
56   i915->current.dynamic[offset] = state;
57   i915->dynamic_dirty |= 1 << offset;
58   i915->hardware_dirty |= I915_HW_DYNAMIC;
59}
60
61
62
63static INLINE void set_dynamic_array(struct i915_context *i915,
64                                     unsigned offset,
65                                     const unsigned *src,
66                                     unsigned dwords)
67{
68   unsigned i;
69
70   if (!memcmp(src, &i915->current.dynamic[offset], dwords * 4))
71      return;
72
73   for (i = 0; i < dwords; i++) {
74      i915->current.dynamic[offset + i] = src[i];
75      i915->dynamic_dirty |= 1 << (offset + i);
76   }
77
78   i915->hardware_dirty |= I915_HW_DYNAMIC;
79}
80
81
82
83/***********************************************************************
84 * Modes4: stencil masks and logicop
85 */
86static void upload_MODES4(struct i915_context *i915)
87{
88   unsigned modes4 = 0;
89
90   /* I915_NEW_STENCIL
91    */
92   modes4 |= i915->depth_stencil->stencil_modes4;
93
94   /* I915_NEW_BLEND
95     */
96   modes4 |= i915->blend->modes4;
97
98   set_dynamic(i915, I915_DYNAMIC_MODES4, modes4);
99}
100
101const struct i915_tracked_state i915_upload_MODES4 = {
102   "MODES4",
103   upload_MODES4,
104   I915_NEW_BLEND | I915_NEW_DEPTH_STENCIL
105};
106
107
108
109/***********************************************************************
110 */
111static void upload_BFO(struct i915_context *i915)
112{
113   unsigned bfo[2];
114   bfo[0] = i915->depth_stencil->bfo[0];
115   bfo[1] = i915->depth_stencil->bfo[1];
116   /* I don't get it only allowed to set a ref mask when the enable bit is set? */
117   if (bfo[0] & BFO_ENABLE_STENCIL_REF) {
118      bfo[0] |= i915->stencil_ref.ref_value[1] << BFO_STENCIL_REF_SHIFT;
119   }
120
121   set_dynamic_array(i915, I915_DYNAMIC_BFO_0, bfo, 2);
122}
123
124const struct i915_tracked_state i915_upload_BFO = {
125   "BFO",
126   upload_BFO,
127   I915_NEW_DEPTH_STENCIL
128};
129
130
131
132/***********************************************************************
133 */
134static void upload_BLENDCOLOR(struct i915_context *i915)
135{
136   unsigned bc[2];
137
138   memset(bc, 0, sizeof(bc));
139
140   /* I915_NEW_BLEND
141    */
142   {
143      const float *color = i915->blend_color.color;
144
145      bc[0] = _3DSTATE_CONST_BLEND_COLOR_CMD;
146      bc[1] = pack_ui32_float4(color[0],
147                               color[1],
148                               color[2],
149                               color[3]);
150   }
151
152   set_dynamic_array(i915, I915_DYNAMIC_BC_0, bc, 2);
153}
154
155const struct i915_tracked_state i915_upload_BLENDCOLOR = {
156   "BLENDCOLOR",
157   upload_BLENDCOLOR,
158   I915_NEW_BLEND
159};
160
161
162
163/***********************************************************************
164 */
165static void upload_IAB(struct i915_context *i915)
166{
167   unsigned iab = i915->blend->iab;
168
169   set_dynamic(i915, I915_DYNAMIC_IAB, iab);
170}
171
172const struct i915_tracked_state i915_upload_IAB = {
173   "IAB",
174   upload_IAB,
175   I915_NEW_BLEND
176};
177
178
179
180/***********************************************************************
181 */
182static void upload_DEPTHSCALE(struct i915_context *i915)
183{
184   set_dynamic_array(i915, I915_DYNAMIC_DEPTHSCALE_0,
185                     &i915->rasterizer->ds[0].u, 2);
186}
187
188const struct i915_tracked_state i915_upload_DEPTHSCALE = {
189   "DEPTHSCALE",
190   upload_DEPTHSCALE,
191   I915_NEW_RASTERIZER
192};
193
194
195
196/***********************************************************************
197 * Polygon stipple
198 *
199 * The i915 supports a 4x4 stipple natively, GL wants 32x32.
200 * Fortunately stipple is usually a repeating pattern.
201 *
202 * XXX: does stipple pattern need to be adjusted according to
203 * the window position?
204 *
205 * XXX: possibly need workaround for conform paths test.
206 */
207static void upload_STIPPLE(struct i915_context *i915)
208{
209   unsigned st[2];
210
211   st[0] = _3DSTATE_STIPPLE;
212   st[1] = 0;
213
214   /* I915_NEW_RASTERIZER
215    */
216   st[1] |= i915->rasterizer->st;
217
218   /* I915_NEW_STIPPLE
219    */
220   {
221      const ubyte *mask = (const ubyte *)i915->poly_stipple.stipple;
222      ubyte p[4];
223
224      p[0] = mask[12] & 0xf;
225      p[1] = mask[8] & 0xf;
226      p[2] = mask[4] & 0xf;
227      p[3] = mask[0] & 0xf;
228
229      /* Not sure what to do about fallbacks, so for now just dont:
230       */
231      st[1] |= ((p[0] << 0) |
232                (p[1] << 4) |
233                (p[2] << 8) |
234                (p[3] << 12));
235   }
236
237   set_dynamic_array(i915, I915_DYNAMIC_STP_0, st, 2);
238}
239
240const struct i915_tracked_state i915_upload_STIPPLE = {
241   "STIPPLE",
242   upload_STIPPLE,
243   I915_NEW_RASTERIZER | I915_NEW_STIPPLE
244};
245
246
247
248/***********************************************************************
249 * Scissor enable
250 */
251static void upload_SCISSOR_ENABLE( struct i915_context *i915 )
252{
253   set_dynamic(i915, I915_DYNAMIC_SC_ENA_0, i915->rasterizer->sc[0]);
254}
255
256const struct i915_tracked_state i915_upload_SCISSOR_ENABLE = {
257   "SCISSOR ENABLE",
258   upload_SCISSOR_ENABLE,
259   I915_NEW_RASTERIZER
260};
261
262
263
264/***********************************************************************
265 * Scissor rect
266 */
267static void upload_SCISSOR_RECT(struct i915_context *i915)
268{
269   unsigned x1 = i915->scissor.minx;
270   unsigned y1 = i915->scissor.miny;
271   unsigned x2 = i915->scissor.maxx - 1;
272   unsigned y2 = i915->scissor.maxy - 1;
273   unsigned sc[3];
274
275   sc[0] = _3DSTATE_SCISSOR_RECT_0_CMD;
276   sc[1] = (y1 << 16) | (x1 & 0xffff);
277   sc[2] = (y2 << 16) | (x2 & 0xffff);
278
279   set_dynamic_array(i915, I915_DYNAMIC_SC_RECT_0, sc, 3);
280}
281
282const struct i915_tracked_state i915_upload_SCISSOR_RECT = {
283   "SCISSOR RECT",
284   upload_SCISSOR_RECT,
285   I915_NEW_SCISSOR
286};
287
288
289
290/***********************************************************************
291 */
292static const struct i915_tracked_state *atoms[] = {
293   &i915_upload_MODES4,
294   &i915_upload_BFO,
295   &i915_upload_BLENDCOLOR,
296   &i915_upload_IAB,
297   &i915_upload_DEPTHSCALE,
298   &i915_upload_STIPPLE,
299   &i915_upload_SCISSOR_ENABLE,
300   &i915_upload_SCISSOR_RECT
301};
302
303/* These will be dynamic indirect state commands, but for now just end
304 * up on the batch buffer with everything else.
305 */
306static void update_dynamic(struct i915_context *i915)
307{
308   int i;
309
310   for (i = 0; i < Elements(atoms); i++)
311      if (i915->dirty & atoms[i]->dirty)
312         atoms[i]->update(i915);
313}
314
315struct i915_tracked_state i915_hw_dynamic = {
316   "dynamic",
317   update_dynamic,
318   ~0 /* all state atoms, becuase we do internal checking */
319};
320