1 /**************************************************************************
2 *
3 * Copyright 2003 VMware, Inc.
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 VMWARE 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_context.h"
30 #include "i915_reg.h"
31 #include "i915_state.h"
32 #include "i915_state_inlines.h"
33
34 #include "util/u_memory.h"
35 #include "util/u_pack_color.h"
36
37 /* State that we have chosen to store in the DYNAMIC segment of the
38 * i915 indirect state mechanism.
39 *
40 * Can't cache these in the way we do the static state, as there is no
41 * start/size in the command packet, instead an 'end' value that gets
42 * incremented.
43 *
44 * Additionally, there seems to be a requirement to re-issue the full
45 * (active) state every time a 4kb boundary is crossed.
46 */
47
48 static inline void
set_dynamic(struct i915_context * i915,unsigned offset,const unsigned state)49 set_dynamic(struct i915_context *i915, unsigned offset, const unsigned state)
50 {
51 if (i915->current.dynamic[offset] == state)
52 return;
53
54 i915->current.dynamic[offset] = state;
55 i915->dynamic_dirty |= 1 << offset;
56 i915->hardware_dirty |= I915_HW_DYNAMIC;
57 }
58
59 static inline void
set_dynamic_array(struct i915_context * i915,unsigned offset,const unsigned * src,unsigned dwords)60 set_dynamic_array(struct i915_context *i915, unsigned offset,
61 const unsigned *src, unsigned dwords)
62 {
63 unsigned i;
64
65 if (!memcmp(src, &i915->current.dynamic[offset], dwords * 4))
66 return;
67
68 for (i = 0; i < dwords; i++) {
69 i915->current.dynamic[offset + i] = src[i];
70 i915->dynamic_dirty |= 1 << (offset + i);
71 }
72
73 i915->hardware_dirty |= I915_HW_DYNAMIC;
74 }
75
76 /***********************************************************************
77 * Modes4: stencil masks and logicop
78 */
79 static void
upload_MODES4(struct i915_context * i915)80 upload_MODES4(struct i915_context *i915)
81 {
82 bool stencil_ccw = i915_stencil_ccw(i915);
83
84 unsigned modes4 = 0;
85
86 /* I915_NEW_STENCIL
87 */
88 if (stencil_ccw)
89 modes4 |= i915->depth_stencil->stencil_modes4_ccw;
90 else
91 modes4 |= i915->depth_stencil->stencil_modes4_cw;
92
93 /* I915_NEW_BLEND
94 */
95 modes4 |= i915->blend->modes4;
96
97 set_dynamic(i915, I915_DYNAMIC_MODES4, modes4);
98 }
99
100 const struct i915_tracked_state i915_upload_MODES4 = {
101 "MODES4", upload_MODES4,
102 I915_NEW_BLEND | I915_NEW_DEPTH_STENCIL | I915_NEW_RASTERIZER};
103
104 /***********************************************************************
105 */
106 static void
upload_BFO(struct i915_context * i915)107 upload_BFO(struct i915_context *i915)
108 {
109 bool stencil_ccw = i915_stencil_ccw(i915);
110
111 unsigned bfo[2];
112 if (stencil_ccw) {
113 bfo[0] = i915->depth_stencil->bfo_ccw[0];
114 bfo[1] = i915->depth_stencil->bfo_ccw[1];
115 } else {
116 bfo[0] = i915->depth_stencil->bfo_cw[0];
117 bfo[1] = i915->depth_stencil->bfo_cw[1];
118 }
119 /* I don't get it only allowed to set a ref mask when the enable bit is set?
120 */
121 if (bfo[0] & BFO_ENABLE_STENCIL_REF) {
122 bfo[0] |= i915->stencil_ref.ref_value[!stencil_ccw]
123 << BFO_STENCIL_REF_SHIFT;
124 }
125
126 set_dynamic_array(i915, I915_DYNAMIC_BFO_0, bfo, 2);
127 }
128
129 const struct i915_tracked_state i915_upload_BFO = {
130 "BFO", upload_BFO, I915_NEW_DEPTH_STENCIL | I915_NEW_RASTERIZER};
131
132 /***********************************************************************
133 */
134 static void
upload_BLENDCOLOR(struct i915_context * i915)135 upload_BLENDCOLOR(struct i915_context *i915)
136 {
137 unsigned bc[2];
138
139 memset(bc, 0, sizeof(bc));
140
141 /* I915_NEW_BLEND
142 */
143 {
144 const float *color = i915->blend_color.color;
145
146 bc[0] = _3DSTATE_CONST_BLEND_COLOR_CMD;
147 bc[1] = pack_ui32_float4(color[i915->current.color_swizzle[2]],
148 color[i915->current.color_swizzle[1]],
149 color[i915->current.color_swizzle[0]],
150 color[i915->current.color_swizzle[3]]);
151 }
152
153 set_dynamic_array(i915, I915_DYNAMIC_BC_0, bc, 2);
154 }
155
156 const struct i915_tracked_state i915_upload_BLENDCOLOR = {
157 "BLENDCOLOR", upload_BLENDCOLOR, I915_NEW_BLEND | I915_NEW_COLOR_SWIZZLE};
158
159 /***********************************************************************
160 */
161 static void
upload_IAB(struct i915_context * i915)162 upload_IAB(struct i915_context *i915)
163 {
164 unsigned iab = 0;
165
166 if (i915->blend) {
167 struct i915_surface *cbuf = i915_surface(i915->framebuffer.cbufs[0]);
168 if (cbuf && cbuf->alpha_in_g)
169 iab |= i915->blend->iab_alpha_in_g;
170 else if (cbuf && cbuf->alpha_is_x)
171 iab |= i915->blend->iab_alpha_is_x;
172 else
173 iab |= i915->blend->iab;
174 }
175
176 set_dynamic(i915, I915_DYNAMIC_IAB, iab);
177 }
178
179 const struct i915_tracked_state i915_upload_IAB = {
180 "IAB", upload_IAB, I915_NEW_BLEND | I915_NEW_FRAMEBUFFER};
181
182 /***********************************************************************
183 */
184 static void
upload_DEPTHSCALE(struct i915_context * i915)185 upload_DEPTHSCALE(struct i915_context *i915)
186 {
187 set_dynamic_array(i915, I915_DYNAMIC_DEPTHSCALE_0,
188 &i915->rasterizer->ds[0].u, 2);
189 }
190
191 const struct i915_tracked_state i915_upload_DEPTHSCALE = {
192 "DEPTHSCALE", upload_DEPTHSCALE, I915_NEW_RASTERIZER};
193
194 /***********************************************************************
195 * Polygon stipple
196 *
197 * The i915 supports a 4x4 stipple natively, GL wants 32x32.
198 * Fortunately stipple is usually a repeating pattern.
199 *
200 * XXX: does stipple pattern need to be adjusted according to
201 * the window position?
202 *
203 * XXX: possibly need workaround for conform paths test.
204 */
205 static void
upload_STIPPLE(struct i915_context * i915)206 upload_STIPPLE(struct i915_context *i915)
207 {
208 unsigned st[2];
209
210 st[0] = _3DSTATE_STIPPLE;
211 st[1] = 0;
212
213 /* I915_NEW_RASTERIZER
214 */
215 if (i915->rasterizer)
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) | (p[1] << 4) | (p[2] << 8) | (p[3] << 12));
232 }
233
234 set_dynamic_array(i915, I915_DYNAMIC_STP_0, st, 2);
235 }
236
237 const struct i915_tracked_state i915_upload_STIPPLE = {
238 "STIPPLE", upload_STIPPLE, I915_NEW_RASTERIZER | I915_NEW_STIPPLE};
239
240 /***********************************************************************
241 * Scissor enable
242 */
243 static void
upload_SCISSOR_ENABLE(struct i915_context * i915)244 upload_SCISSOR_ENABLE(struct i915_context *i915)
245 {
246 set_dynamic(i915, I915_DYNAMIC_SC_ENA_0, i915->rasterizer->sc[0]);
247 }
248
249 const struct i915_tracked_state i915_upload_SCISSOR_ENABLE = {
250 "SCISSOR ENABLE", upload_SCISSOR_ENABLE, I915_NEW_RASTERIZER};
251
252 /***********************************************************************
253 * Scissor rect
254 */
255 static void
upload_SCISSOR_RECT(struct i915_context * i915)256 upload_SCISSOR_RECT(struct i915_context *i915)
257 {
258 unsigned x1 = i915->scissor.minx;
259 unsigned y1 = i915->scissor.miny;
260 unsigned x2 = i915->scissor.maxx - 1;
261 unsigned y2 = i915->scissor.maxy - 1;
262 unsigned sc[3];
263
264 sc[0] = _3DSTATE_SCISSOR_RECT_0_CMD;
265 sc[1] = (y1 << 16) | (x1 & 0xffff);
266 sc[2] = (y2 << 16) | (x2 & 0xffff);
267
268 set_dynamic_array(i915, I915_DYNAMIC_SC_RECT_0, sc, 3);
269 }
270
271 const struct i915_tracked_state i915_upload_SCISSOR_RECT = {
272 "SCISSOR RECT", upload_SCISSOR_RECT, I915_NEW_SCISSOR};
273
274 /***********************************************************************
275 */
276 static const struct i915_tracked_state *atoms[] = {
277 &i915_upload_MODES4, &i915_upload_BFO,
278 &i915_upload_BLENDCOLOR, &i915_upload_IAB,
279 &i915_upload_DEPTHSCALE, &i915_upload_STIPPLE,
280 &i915_upload_SCISSOR_ENABLE, &i915_upload_SCISSOR_RECT};
281
282 /* These will be dynamic indirect state commands, but for now just end
283 * up on the batch buffer with everything else.
284 */
285 static void
update_dynamic(struct i915_context * i915)286 update_dynamic(struct i915_context *i915)
287 {
288 int i;
289
290 for (i = 0; i < ARRAY_SIZE(atoms); i++)
291 if (i915->dirty & atoms[i]->dirty)
292 atoms[i]->update(i915);
293 }
294
295 struct i915_tracked_state i915_hw_dynamic = {
296 "dynamic", update_dynamic,
297 ~0 /* all state atoms, because we do internal checking */
298 };
299