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"
37 #include "main/macros.h"
38 #include "intel_fbo.h"
40 static void upload_sf_vp(struct brw_context
*brw
)
42 GLcontext
*ctx
= &brw
->intel
.ctx
;
43 const GLfloat depth_scale
= 1.0F
/ ctx
->DrawBuffer
->_DepthMaxF
;
44 struct brw_sf_viewport sfv
;
45 GLfloat y_scale
, y_bias
;
46 const GLboolean render_to_fbo
= (ctx
->DrawBuffer
->Name
!= 0);
47 const GLfloat
*v
= ctx
->Viewport
._WindowMap
.m
;
49 memset(&sfv
, 0, sizeof(sfv
));
57 y_bias
= ctx
->DrawBuffer
->Height
;
62 sfv
.viewport
.m00
= v
[MAT_SX
];
63 sfv
.viewport
.m11
= v
[MAT_SY
] * y_scale
;
64 sfv
.viewport
.m22
= v
[MAT_SZ
] * depth_scale
;
65 sfv
.viewport
.m30
= v
[MAT_TX
];
66 sfv
.viewport
.m31
= v
[MAT_TY
] * y_scale
+ y_bias
;
67 sfv
.viewport
.m32
= v
[MAT_TZ
] * depth_scale
;
69 /* _NEW_SCISSOR | _NEW_BUFFERS | _NEW_VIEWPORT
70 * for DrawBuffer->_[XY]{min,max}
73 /* The scissor only needs to handle the intersection of drawable and
74 * scissor rect. Clipping to the boundaries of static shared buffers
75 * for front/back/depth is covered by looping over cliprects in brw_draw.c.
77 * Note that the hardware's coordinates are inclusive, while Mesa's min is
78 * inclusive but max is exclusive.
81 /* texmemory: Y=0=bottom */
82 sfv
.scissor
.xmin
= ctx
->DrawBuffer
->_Xmin
;
83 sfv
.scissor
.xmax
= ctx
->DrawBuffer
->_Xmax
- 1;
84 sfv
.scissor
.ymin
= ctx
->DrawBuffer
->_Ymin
;
85 sfv
.scissor
.ymax
= ctx
->DrawBuffer
->_Ymax
- 1;
89 sfv
.scissor
.xmin
= ctx
->DrawBuffer
->_Xmin
;
90 sfv
.scissor
.xmax
= ctx
->DrawBuffer
->_Xmax
- 1;
91 sfv
.scissor
.ymin
= ctx
->DrawBuffer
->Height
- ctx
->DrawBuffer
->_Ymax
;
92 sfv
.scissor
.ymax
= ctx
->DrawBuffer
->Height
- ctx
->DrawBuffer
->_Ymin
- 1;
95 dri_bo_unreference(brw
->sf
.vp_bo
);
96 brw
->sf
.vp_bo
= brw_cache_data( &brw
->cache
, BRW_SF_VP
, &sfv
, NULL
, 0 );
99 const struct brw_tracked_state brw_sf_vp
= {
101 .mesa
= (_NEW_VIEWPORT
|
107 .prepare
= upload_sf_vp
110 struct brw_sf_unit_key
{
111 unsigned int total_grf
;
112 unsigned int urb_entry_read_length
;
114 unsigned int nr_urb_entries
, urb_size
, sfsize
;
116 GLenum front_face
, cull_face
, provoking_vertex
;
118 unsigned line_smooth
:1;
119 unsigned point_sprite
:1;
120 unsigned point_attenuated
:1;
121 unsigned render_to_fbo
:1;
127 sf_unit_populate_key(struct brw_context
*brw
, struct brw_sf_unit_key
*key
)
129 GLcontext
*ctx
= &brw
->intel
.ctx
;
130 memset(key
, 0, sizeof(*key
));
132 /* CACHE_NEW_SF_PROG */
133 key
->total_grf
= brw
->sf
.prog_data
->total_grf
;
134 key
->urb_entry_read_length
= brw
->sf
.prog_data
->urb_read_length
;
136 /* BRW_NEW_URB_FENCE */
137 key
->nr_urb_entries
= brw
->urb
.nr_sf_entries
;
138 key
->urb_size
= brw
->urb
.vsize
;
139 key
->sfsize
= brw
->urb
.sfsize
;
141 key
->scissor
= ctx
->Scissor
.Enabled
;
142 key
->front_face
= ctx
->Polygon
.FrontFace
;
144 if (ctx
->Polygon
.CullFlag
)
145 key
->cull_face
= ctx
->Polygon
.CullFaceMode
;
147 key
->cull_face
= GL_NONE
;
149 key
->line_width
= ctx
->Line
.Width
;
150 key
->line_smooth
= ctx
->Line
.SmoothFlag
;
152 key
->point_sprite
= ctx
->Point
.PointSprite
;
153 key
->point_size
= CLAMP(ctx
->Point
.Size
, ctx
->Point
.MinSize
, ctx
->Point
.MaxSize
);
154 key
->point_attenuated
= ctx
->Point
._Attenuated
;
157 key
->provoking_vertex
= ctx
->Light
.ProvokingVertex
;
159 key
->render_to_fbo
= brw
->intel
.ctx
.DrawBuffer
->Name
!= 0;
163 sf_unit_create_from_key(struct brw_context
*brw
, struct brw_sf_unit_key
*key
,
166 struct brw_sf_unit_state sf
;
168 int chipset_max_threads
;
169 memset(&sf
, 0, sizeof(sf
));
171 sf
.thread0
.grf_reg_count
= ALIGN(key
->total_grf
, 16) / 16 - 1;
172 sf
.thread0
.kernel_start_pointer
= brw
->sf
.prog_bo
->offset
>> 6; /* reloc */
174 sf
.thread1
.floating_point_mode
= BRW_FLOATING_POINT_NON_IEEE_754
;
176 sf
.thread3
.dispatch_grf_start_reg
= 3;
178 if (BRW_IS_IGDNG(brw
))
179 sf
.thread3
.urb_entry_read_offset
= 3;
181 sf
.thread3
.urb_entry_read_offset
= 1;
183 sf
.thread3
.urb_entry_read_length
= key
->urb_entry_read_length
;
185 sf
.thread4
.nr_urb_entries
= key
->nr_urb_entries
;
186 sf
.thread4
.urb_entry_allocation_size
= key
->sfsize
- 1;
188 /* Each SF thread produces 1 PUE, and there can be up to 24(Pre-IGDNG) or
191 if (BRW_IS_IGDNG(brw
))
192 chipset_max_threads
= 48;
194 chipset_max_threads
= 24;
196 sf
.thread4
.max_threads
= MIN2(chipset_max_threads
, key
->nr_urb_entries
) - 1;
198 if (INTEL_DEBUG
& DEBUG_SINGLE_THREAD
)
199 sf
.thread4
.max_threads
= 0;
201 if (INTEL_DEBUG
& DEBUG_STATS
)
202 sf
.thread4
.stats_enable
= 1;
204 /* CACHE_NEW_SF_VP */
205 sf
.sf5
.sf_viewport_state_offset
= brw
->sf
.vp_bo
->offset
>> 5; /* reloc */
207 sf
.sf5
.viewport_transform
= 1;
214 if (key
->front_face
== GL_CCW
)
215 sf
.sf5
.front_winding
= BRW_FRONTWINDING_CCW
;
217 sf
.sf5
.front_winding
= BRW_FRONTWINDING_CW
;
219 /* The viewport is inverted for rendering to a FBO, and that inverts
220 * polygon front/back orientation.
222 sf
.sf5
.front_winding
^= key
->render_to_fbo
;
224 switch (key
->cull_face
) {
226 sf
.sf6
.cull_mode
= BRW_CULLMODE_FRONT
;
229 sf
.sf6
.cull_mode
= BRW_CULLMODE_BACK
;
231 case GL_FRONT_AND_BACK
:
232 sf
.sf6
.cull_mode
= BRW_CULLMODE_BOTH
;
235 sf
.sf6
.cull_mode
= BRW_CULLMODE_NONE
;
243 /* XXX use ctx->Const.Min/MaxLineWidth here */
244 sf
.sf6
.line_width
= CLAMP(key
->line_width
, 1.0, 5.0) * (1<<1);
246 sf
.sf6
.line_endcap_aa_region_width
= 1;
247 if (key
->line_smooth
)
248 sf
.sf6
.aa_enable
= 1;
249 else if (sf
.sf6
.line_width
<= 0x2)
250 sf
.sf6
.line_width
= 0;
253 key
->render_to_fbo
= brw
->intel
.ctx
.DrawBuffer
->Name
!= 0;
254 if (!key
->render_to_fbo
) {
255 /* Rendering to an OpenGL window */
256 sf
.sf6
.point_rast_rule
= BRW_RASTRULE_UPPER_RIGHT
;
259 /* If rendering to an FBO, the pixel coordinate system is
260 * inverted with respect to the normal OpenGL coordinate
261 * system, so BRW_RASTRULE_LOWER_RIGHT is correct.
262 * But this value is listed as "Reserved, but not seen as useful"
263 * in Intel documentation (page 212, "Point Rasterization Rule",
264 * section 7.4 "SF Pipeline State Summary", of document
265 * "IntelĀ® 965 Express Chipset Family and IntelĀ® G35 Express
266 * Chipset Graphics Controller Programmer's Reference Manual,
267 * Volume 2: 3D/Media", Revision 1.0b as of January 2008,
269 * http://intellinuxgraphics.org/documentation.html
270 * at the time of this writing).
272 * It does work on at least some devices, if not all;
273 * if devices that don't support it can be identified,
274 * the likely failure case is that points are rasterized
275 * incorrectly, which is no worse than occurs without
276 * the value, so we're using it here.
278 sf
.sf6
.point_rast_rule
= BRW_RASTRULE_LOWER_RIGHT
;
280 /* XXX clamp max depends on AA vs. non-AA */
283 sf
.sf7
.sprite_point
= key
->point_sprite
;
284 sf
.sf7
.point_size
= CLAMP(rint(key
->point_size
), 1, 255) * (1<<3);
285 sf
.sf7
.use_point_size_state
= !key
->point_attenuated
;
286 sf
.sf7
.aa_line_distance_mode
= 0;
288 /* might be BRW_NEW_PRIMITIVE if we have to adjust pv for polygons:
290 if (key
->provoking_vertex
== GL_LAST_VERTEX_CONVENTION
) {
291 sf
.sf7
.trifan_pv
= 2;
292 sf
.sf7
.linestrip_pv
= 1;
293 sf
.sf7
.tristrip_pv
= 2;
295 sf
.sf7
.trifan_pv
= 1;
296 sf
.sf7
.linestrip_pv
= 0;
297 sf
.sf7
.tristrip_pv
= 0;
299 sf
.sf7
.line_last_pixel_enable
= 0;
301 /* Set bias for OpenGL rasterization rules:
303 sf
.sf6
.dest_org_vbias
= 0x8;
304 sf
.sf6
.dest_org_hbias
= 0x8;
306 bo
= brw_upload_cache(&brw
->cache
, BRW_SF_UNIT
,
312 /* STATE_PREFETCH command description describes this state as being
313 * something loaded through the GPE (L2 ISC), so it's INSTRUCTION domain.
315 /* Emit SF program relocation */
316 dri_bo_emit_reloc(bo
,
317 I915_GEM_DOMAIN_INSTRUCTION
, 0,
318 sf
.thread0
.grf_reg_count
<< 1,
319 offsetof(struct brw_sf_unit_state
, thread0
),
322 /* Emit SF viewport relocation */
323 dri_bo_emit_reloc(bo
,
324 I915_GEM_DOMAIN_INSTRUCTION
, 0,
325 sf
.sf5
.front_winding
| (sf
.sf5
.viewport_transform
<< 1),
326 offsetof(struct brw_sf_unit_state
, sf5
),
332 static void upload_sf_unit( struct brw_context
*brw
)
334 struct brw_sf_unit_key key
;
335 dri_bo
*reloc_bufs
[2];
337 sf_unit_populate_key(brw
, &key
);
339 reloc_bufs
[0] = brw
->sf
.prog_bo
;
340 reloc_bufs
[1] = brw
->sf
.vp_bo
;
342 dri_bo_unreference(brw
->sf
.state_bo
);
343 brw
->sf
.state_bo
= brw_search_cache(&brw
->cache
, BRW_SF_UNIT
,
347 if (brw
->sf
.state_bo
== NULL
) {
348 brw
->sf
.state_bo
= sf_unit_create_from_key(brw
, &key
, reloc_bufs
);
352 const struct brw_tracked_state brw_sf_unit
= {
354 .mesa
= (_NEW_POLYGON
|
360 .brw
= BRW_NEW_URB_FENCE
,
361 .cache
= (CACHE_NEW_SF_VP
|
364 .prepare
= upload_sf_unit
,