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
;
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
;
156 key
->render_to_fbo
= brw
->intel
.ctx
.DrawBuffer
->Name
!= 0;
160 sf_unit_create_from_key(struct brw_context
*brw
, struct brw_sf_unit_key
*key
,
163 struct brw_sf_unit_state sf
;
165 int chipset_max_threads
;
166 memset(&sf
, 0, sizeof(sf
));
168 sf
.thread0
.grf_reg_count
= ALIGN(key
->total_grf
, 16) / 16 - 1;
169 sf
.thread0
.kernel_start_pointer
= brw
->sf
.prog_bo
->offset
>> 6; /* reloc */
171 sf
.thread1
.floating_point_mode
= BRW_FLOATING_POINT_NON_IEEE_754
;
173 sf
.thread3
.dispatch_grf_start_reg
= 3;
175 if (BRW_IS_IGDNG(brw
))
176 sf
.thread3
.urb_entry_read_offset
= 3;
178 sf
.thread3
.urb_entry_read_offset
= 1;
180 sf
.thread3
.urb_entry_read_length
= key
->urb_entry_read_length
;
182 sf
.thread4
.nr_urb_entries
= key
->nr_urb_entries
;
183 sf
.thread4
.urb_entry_allocation_size
= key
->sfsize
- 1;
185 /* Each SF thread produces 1 PUE, and there can be up to 24(Pre-IGDNG) or
188 if (BRW_IS_IGDNG(brw
))
189 chipset_max_threads
= 48;
191 chipset_max_threads
= 24;
193 sf
.thread4
.max_threads
= MIN2(chipset_max_threads
, key
->nr_urb_entries
) - 1;
195 if (INTEL_DEBUG
& DEBUG_SINGLE_THREAD
)
196 sf
.thread4
.max_threads
= 0;
198 if (INTEL_DEBUG
& DEBUG_STATS
)
199 sf
.thread4
.stats_enable
= 1;
201 /* CACHE_NEW_SF_VP */
202 sf
.sf5
.sf_viewport_state_offset
= brw
->sf
.vp_bo
->offset
>> 5; /* reloc */
204 sf
.sf5
.viewport_transform
= 1;
211 if (key
->front_face
== GL_CCW
)
212 sf
.sf5
.front_winding
= BRW_FRONTWINDING_CCW
;
214 sf
.sf5
.front_winding
= BRW_FRONTWINDING_CW
;
216 /* The viewport is inverted for rendering to a FBO, and that inverts
217 * polygon front/back orientation.
219 sf
.sf5
.front_winding
^= key
->render_to_fbo
;
221 switch (key
->cull_face
) {
223 sf
.sf6
.cull_mode
= BRW_CULLMODE_FRONT
;
226 sf
.sf6
.cull_mode
= BRW_CULLMODE_BACK
;
228 case GL_FRONT_AND_BACK
:
229 sf
.sf6
.cull_mode
= BRW_CULLMODE_BOTH
;
232 sf
.sf6
.cull_mode
= BRW_CULLMODE_NONE
;
240 /* XXX use ctx->Const.Min/MaxLineWidth here */
241 sf
.sf6
.line_width
= CLAMP(key
->line_width
, 1.0, 5.0) * (1<<1);
243 sf
.sf6
.line_endcap_aa_region_width
= 1;
244 if (key
->line_smooth
)
245 sf
.sf6
.aa_enable
= 1;
246 else if (sf
.sf6
.line_width
<= 0x2)
247 sf
.sf6
.line_width
= 0;
250 key
->render_to_fbo
= brw
->intel
.ctx
.DrawBuffer
->Name
!= 0;
251 if (!key
->render_to_fbo
) {
252 /* Rendering to an OpenGL window */
253 sf
.sf6
.point_rast_rule
= BRW_RASTRULE_UPPER_RIGHT
;
256 /* If rendering to an FBO, the pixel coordinate system is
257 * inverted with respect to the normal OpenGL coordinate
258 * system, so BRW_RASTRULE_LOWER_RIGHT is correct.
259 * But this value is listed as "Reserved, but not seen as useful"
260 * in Intel documentation (page 212, "Point Rasterization Rule",
261 * section 7.4 "SF Pipeline State Summary", of document
262 * "IntelĀ® 965 Express Chipset Family and IntelĀ® G35 Express
263 * Chipset Graphics Controller Programmer's Reference Manual,
264 * Volume 2: 3D/Media", Revision 1.0b as of January 2008,
266 * http://intellinuxgraphics.org/documentation.html
267 * at the time of this writing).
269 * It does work on at least some devices, if not all;
270 * if devices that don't support it can be identified,
271 * the likely failure case is that points are rasterized
272 * incorrectly, which is no worse than occurs without
273 * the value, so we're using it here.
275 sf
.sf6
.point_rast_rule
= BRW_RASTRULE_LOWER_RIGHT
;
277 /* XXX clamp max depends on AA vs. non-AA */
279 sf
.sf7
.sprite_point
= key
->point_sprite
;
280 sf
.sf7
.point_size
= CLAMP(rint(key
->point_size
), 1, 255) * (1<<3);
281 sf
.sf7
.use_point_size_state
= !key
->point_attenuated
;
282 sf
.sf7
.aa_line_distance_mode
= 0;
284 /* might be BRW_NEW_PRIMITIVE if we have to adjust pv for polygons:
286 sf
.sf7
.trifan_pv
= 2;
287 sf
.sf7
.linestrip_pv
= 1;
288 sf
.sf7
.tristrip_pv
= 2;
289 sf
.sf7
.line_last_pixel_enable
= 0;
291 /* Set bias for OpenGL rasterization rules:
293 sf
.sf6
.dest_org_vbias
= 0x8;
294 sf
.sf6
.dest_org_hbias
= 0x8;
296 bo
= brw_upload_cache(&brw
->cache
, BRW_SF_UNIT
,
302 /* Emit SF program relocation */
303 dri_bo_emit_reloc(bo
,
304 I915_GEM_DOMAIN_INSTRUCTION
, 0,
305 sf
.thread0
.grf_reg_count
<< 1,
306 offsetof(struct brw_sf_unit_state
, thread0
),
309 /* Emit SF viewport relocation */
310 dri_bo_emit_reloc(bo
,
311 I915_GEM_DOMAIN_INSTRUCTION
, 0,
312 sf
.sf5
.front_winding
| (sf
.sf5
.viewport_transform
<< 1),
313 offsetof(struct brw_sf_unit_state
, sf5
),
319 static void upload_sf_unit( struct brw_context
*brw
)
321 struct brw_sf_unit_key key
;
322 dri_bo
*reloc_bufs
[2];
324 sf_unit_populate_key(brw
, &key
);
326 reloc_bufs
[0] = brw
->sf
.prog_bo
;
327 reloc_bufs
[1] = brw
->sf
.vp_bo
;
329 dri_bo_unreference(brw
->sf
.state_bo
);
330 brw
->sf
.state_bo
= brw_search_cache(&brw
->cache
, BRW_SF_UNIT
,
334 if (brw
->sf
.state_bo
== NULL
) {
335 brw
->sf
.state_bo
= sf_unit_create_from_key(brw
, &key
, reloc_bufs
);
339 const struct brw_tracked_state brw_sf_unit
= {
341 .mesa
= (_NEW_POLYGON
|
345 .brw
= BRW_NEW_URB_FENCE
,
346 .cache
= (CACHE_NEW_SF_VP
|
349 .prepare
= upload_sf_unit
,