2 Copyright (C) Intel Corp. 2006. All Rights Reserved.
3 Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
4 develop this 3D driver.
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:
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.
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.
26 **********************************************************************/
29 * Keith Whitwell <keith@tungstengraphics.com>
34 #include "brw_context.h"
35 #include "brw_state.h"
36 #include "brw_defines.h"
39 /***********************************************************************
40 * WM unit - fragment programs and rasterization
43 struct brw_wm_unit_key
{
44 unsigned int total_grf
, total_scratch
;
45 unsigned int urb_entry_read_length
;
46 unsigned int curb_entry_read_length
;
47 unsigned int dispatch_grf_start_reg
;
49 unsigned int curbe_offset
;
50 unsigned int urb_size
;
52 unsigned int max_threads
;
54 unsigned int nr_surfaces
, sampler_count
;
55 GLboolean uses_depth
, computes_depth
, uses_kill
, is_glsl
;
56 GLboolean polygon_stipple
, stats_wm
, line_stipple
, offset_enable
;
57 GLfloat offset_units
, offset_factor
;
61 wm_unit_populate_key(struct brw_context
*brw
, struct brw_wm_unit_key
*key
)
63 GLcontext
*ctx
= &brw
->intel
.ctx
;
64 const struct gl_fragment_program
*fp
= brw
->fragment_program
;
65 const struct brw_fragment_program
*bfp
= (struct brw_fragment_program
*) fp
;
66 struct intel_context
*intel
= &brw
->intel
;
68 memset(key
, 0, sizeof(*key
));
70 if (INTEL_DEBUG
& DEBUG_SINGLE_THREAD
)
73 /* WM maximum threads is number of EUs times number of threads per EU. */
75 key
->max_threads
= 10 * 5;
77 key
->max_threads
= 8 * 4;
80 /* CACHE_NEW_WM_PROG */
81 key
->total_grf
= brw
->wm
.prog_data
->total_grf
;
82 key
->urb_entry_read_length
= brw
->wm
.prog_data
->urb_read_length
;
83 key
->curb_entry_read_length
= brw
->wm
.prog_data
->curb_read_length
;
84 key
->dispatch_grf_start_reg
= brw
->wm
.prog_data
->first_curbe_grf
;
85 key
->total_scratch
= ALIGN(brw
->wm
.prog_data
->total_scratch
, 1024);
87 /* BRW_NEW_URB_FENCE */
88 key
->urb_size
= brw
->urb
.vsize
;
90 /* BRW_NEW_CURBE_OFFSETS */
91 key
->curbe_offset
= brw
->curbe
.wm_start
;
93 /* BRW_NEW_NR_SURFACEs */
94 key
->nr_surfaces
= brw
->wm
.nr_surfaces
;
96 /* CACHE_NEW_SAMPLER */
97 key
->sampler_count
= brw
->wm
.sampler_count
;
99 /* _NEW_POLYGONSTIPPLE */
100 key
->polygon_stipple
= ctx
->Polygon
.StippleFlag
;
102 /* BRW_NEW_FRAGMENT_PROGRAM */
103 key
->uses_depth
= (fp
->Base
.InputsRead
& (1 << FRAG_ATTRIB_WPOS
)) != 0;
105 /* as far as we can tell */
106 key
->computes_depth
=
107 (fp
->Base
.OutputsWritten
& (1 << FRAG_RESULT_DEPTH
)) != 0;
110 key
->uses_kill
= fp
->UsesKill
|| ctx
->Color
.AlphaEnabled
;
111 key
->is_glsl
= bfp
->isGLSL
;
113 /* temporary sanity check assertion */
114 ASSERT(bfp
->isGLSL
== brw_wm_is_glsl(fp
));
117 key
->stats_wm
= intel
->stats_wm
;
120 key
->line_stipple
= ctx
->Line
.StippleFlag
;
123 key
->offset_enable
= ctx
->Polygon
.OffsetFill
;
124 key
->offset_units
= ctx
->Polygon
.OffsetUnits
;
125 key
->offset_factor
= ctx
->Polygon
.OffsetFactor
;
129 * Setup wm hardware state. See page 225 of Volume 2
132 wm_unit_create_from_key(struct brw_context
*brw
, struct brw_wm_unit_key
*key
,
135 struct brw_wm_unit_state wm
;
138 memset(&wm
, 0, sizeof(wm
));
140 wm
.thread0
.grf_reg_count
= ALIGN(key
->total_grf
, 16) / 16 - 1;
141 wm
.thread0
.kernel_start_pointer
= brw
->wm
.prog_bo
->offset
>> 6; /* reloc */
142 wm
.thread1
.depth_coef_urb_read_offset
= 1;
143 wm
.thread1
.floating_point_mode
= BRW_FLOATING_POINT_NON_IEEE_754
;
144 wm
.thread1
.binding_table_entry_count
= key
->nr_surfaces
;
146 if (key
->total_scratch
!= 0) {
147 wm
.thread2
.scratch_space_base_pointer
=
148 brw
->wm
.scratch_bo
->offset
>> 10; /* reloc */
149 wm
.thread2
.per_thread_scratch_space
= key
->total_scratch
/ 1024 - 1;
151 wm
.thread2
.scratch_space_base_pointer
= 0;
152 wm
.thread2
.per_thread_scratch_space
= 0;
155 wm
.thread3
.dispatch_grf_start_reg
= key
->dispatch_grf_start_reg
;
156 wm
.thread3
.urb_entry_read_length
= key
->urb_entry_read_length
;
157 wm
.thread3
.urb_entry_read_offset
= 0;
158 wm
.thread3
.const_urb_entry_read_length
= key
->curb_entry_read_length
;
159 wm
.thread3
.const_urb_entry_read_offset
= key
->curbe_offset
* 2;
161 wm
.wm4
.sampler_count
= (key
->sampler_count
+ 1) / 4;
162 if (brw
->wm
.sampler_bo
!= NULL
) {
164 wm
.wm4
.sampler_state_pointer
= brw
->wm
.sampler_bo
->offset
>> 5;
166 wm
.wm4
.sampler_state_pointer
= 0;
169 wm
.wm5
.program_uses_depth
= key
->uses_depth
;
170 wm
.wm5
.program_computes_depth
= key
->computes_depth
;
171 wm
.wm5
.program_uses_killpixel
= key
->uses_kill
;
174 wm
.wm5
.enable_8_pix
= 1;
176 wm
.wm5
.enable_16_pix
= 1;
178 wm
.wm5
.max_threads
= key
->max_threads
- 1;
179 wm
.wm5
.thread_dispatch_enable
= 1; /* AKA: color_write */
180 wm
.wm5
.legacy_line_rast
= 0;
181 wm
.wm5
.legacy_global_depth_bias
= 0;
182 wm
.wm5
.early_depth_test
= 1; /* never need to disable */
183 wm
.wm5
.line_aa_region_width
= 0;
184 wm
.wm5
.line_endcap_aa_region_width
= 1;
186 wm
.wm5
.polygon_stipple
= key
->polygon_stipple
;
188 if (key
->offset_enable
) {
189 wm
.wm5
.depth_offset
= 1;
190 /* Something wierd going on with legacy_global_depth_bias,
191 * offset_constant, scaling and MRD. This value passes glean
192 * but gives some odd results elsewere (eg. the
193 * quad-offset-units test).
195 wm
.global_depth_offset_constant
= key
->offset_units
* 2;
197 /* This is the only value that passes glean:
199 wm
.global_depth_offset_scale
= key
->offset_factor
;
202 wm
.wm5
.line_stipple
= key
->line_stipple
;
204 if (INTEL_DEBUG
& DEBUG_STATS
|| key
->stats_wm
)
205 wm
.wm4
.stats_enable
= 1;
207 bo
= brw_upload_cache(&brw
->cache
, BRW_WM_UNIT
,
213 /* Emit WM program relocation */
214 dri_bo_emit_reloc(bo
,
215 I915_GEM_DOMAIN_INSTRUCTION
, 0,
216 wm
.thread0
.grf_reg_count
<< 1,
217 offsetof(struct brw_wm_unit_state
, thread0
),
220 /* Emit scratch space relocation */
221 if (key
->total_scratch
!= 0) {
222 dri_bo_emit_reloc(bo
,
224 wm
.thread2
.per_thread_scratch_space
,
225 offsetof(struct brw_wm_unit_state
, thread2
),
229 /* Emit sampler state relocation */
230 if (key
->sampler_count
!= 0) {
231 dri_bo_emit_reloc(bo
,
232 I915_GEM_DOMAIN_INSTRUCTION
, 0,
233 wm
.wm4
.stats_enable
| (wm
.wm4
.sampler_count
<< 2),
234 offsetof(struct brw_wm_unit_state
, wm4
),
242 static void upload_wm_unit( struct brw_context
*brw
)
244 struct intel_context
*intel
= &brw
->intel
;
245 struct brw_wm_unit_key key
;
246 dri_bo
*reloc_bufs
[3];
247 wm_unit_populate_key(brw
, &key
);
249 /* Allocate the necessary scratch space if we haven't already. Don't
250 * bother reducing the allocation later, since we use scratch so
253 assert(key
.total_scratch
<= 12 * 1024);
254 if (key
.total_scratch
) {
255 GLuint total
= key
.total_scratch
* key
.max_threads
;
257 if (brw
->wm
.scratch_bo
&& total
> brw
->wm
.scratch_bo
->size
) {
258 dri_bo_unreference(brw
->wm
.scratch_bo
);
259 brw
->wm
.scratch_bo
= NULL
;
261 if (brw
->wm
.scratch_bo
== NULL
) {
262 brw
->wm
.scratch_bo
= dri_bo_alloc(intel
->bufmgr
,
269 reloc_bufs
[0] = brw
->wm
.prog_bo
;
270 reloc_bufs
[1] = brw
->wm
.scratch_bo
;
271 reloc_bufs
[2] = brw
->wm
.sampler_bo
;
273 dri_bo_unreference(brw
->wm
.state_bo
);
274 brw
->wm
.state_bo
= brw_search_cache(&brw
->cache
, BRW_WM_UNIT
,
278 if (brw
->wm
.state_bo
== NULL
) {
279 brw
->wm
.state_bo
= wm_unit_create_from_key(brw
, &key
, reloc_bufs
);
283 const struct brw_tracked_state brw_wm_unit
= {
285 .mesa
= (_NEW_POLYGON
|
286 _NEW_POLYGONSTIPPLE
|
291 .brw
= (BRW_NEW_FRAGMENT_PROGRAM
|
292 BRW_NEW_CURBE_OFFSETS
|
293 BRW_NEW_NR_WM_SURFACES
),
295 .cache
= (CACHE_NEW_WM_PROG
|
298 .prepare
= upload_wm_unit
,