2 * Copyright © 2011 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
26 #include "intel_batchbuffer.h"
27 #include "intel_fbo.h"
28 #include "intel_mipmap_tree.h"
30 #include "brw_context.h"
31 #include "brw_defines.h"
32 #include "brw_state.h"
34 #include "brw_blorp.h"
35 #include "gen6_blorp.h"
38 * \name Constants for BLORP VBO
41 #define GEN6_BLORP_NUM_VERTICES 3
42 #define GEN6_BLORP_NUM_VUE_ELEMS 8
43 #define GEN6_BLORP_VBO_SIZE (GEN6_BLORP_NUM_VERTICES \
44 * GEN6_BLORP_NUM_VUE_ELEMS \
49 gen6_blorp_emit_batch_head(struct brw_context
*brw
,
50 const brw_blorp_params
*params
)
52 struct gl_context
*ctx
= &brw
->ctx
;
54 /* To ensure that the batch contains only the resolve, flush the batch
55 * before beginning and after finishing emitting the resolve packets.
62 * CMD_STATE_BASE_ADDRESS
64 * From the Sandy Bridge PRM, Volume 1, Part 1, Table STATE_BASE_ADDRESS:
65 * The following commands must be reissued following any change to the
68 * 3DSTATE_BINDING_TABLE_POINTERS
69 * 3DSTATE_SAMPLER_STATE_POINTERS
70 * 3DSTATE_VIEWPORT_STATE_POINTERS
71 * MEDIA_STATE_POINTERS
74 gen6_blorp_emit_state_base_address(struct brw_context
*brw
,
75 const brw_blorp_params
*params
)
78 OUT_BATCH(CMD_STATE_BASE_ADDRESS
<< 16 | (10 - 2));
79 OUT_BATCH(1); /* GeneralStateBaseAddressModifyEnable */
80 /* SurfaceStateBaseAddress */
81 OUT_RELOC(brw
->batch
.bo
, I915_GEM_DOMAIN_SAMPLER
, 0, 1);
82 /* DynamicStateBaseAddress */
83 OUT_RELOC(brw
->batch
.bo
, (I915_GEM_DOMAIN_RENDER
|
84 I915_GEM_DOMAIN_INSTRUCTION
), 0, 1);
85 OUT_BATCH(1); /* IndirectObjectBaseAddress */
86 if (params
->use_wm_prog
) {
87 OUT_RELOC(brw
->cache
.bo
, I915_GEM_DOMAIN_INSTRUCTION
, 0,
88 1); /* Instruction base address: shader kernels */
90 OUT_BATCH(1); /* InstructionBaseAddress */
92 OUT_BATCH(1); /* GeneralStateUpperBound */
93 /* Dynamic state upper bound. Although the documentation says that
94 * programming it to zero will cause it to be ignored, that is a lie.
95 * If this isn't programmed to a real bound, the sampler border color
96 * pointer is rejected, causing border color to mysteriously fail.
98 OUT_BATCH(0xfffff001);
99 OUT_BATCH(1); /* IndirectObjectUpperBound*/
100 OUT_BATCH(1); /* InstructionAccessUpperBound */
106 gen6_blorp_emit_vertices(struct brw_context
*brw
,
107 const brw_blorp_params
*params
)
109 uint32_t vertex_offset
;
111 /* Setup VBO for the rectangle primitive..
113 * A rectangle primitive (3DPRIM_RECTLIST) consists of only three
114 * vertices. The vertices reside in screen space with DirectX coordinates
115 * (that is, (0, 0) is the upper left corner).
122 * Since the VS is disabled, the clipper loads each VUE directly from
123 * the URB. This is controlled by the 3DSTATE_VERTEX_BUFFERS and
124 * 3DSTATE_VERTEX_ELEMENTS packets below. The VUE contents are as follows:
125 * dw0: Reserved, MBZ.
126 * dw1: Render Target Array Index. The HiZ op does not use indexed
127 * vertices, so set the dword to 0.
128 * dw2: Viewport Index. The HiZ op disables viewport mapping and
129 * scissoring, so set the dword to 0.
130 * dw3: Point Width: The HiZ op does not emit the POINTLIST primitive, so
131 * set the dword to 0.
132 * dw4: Vertex Position X.
133 * dw5: Vertex Position Y.
134 * dw6: Vertex Position Z.
135 * dw7: Vertex Position W.
137 * For details, see the Sandybridge PRM, Volume 2, Part 1, Section 1.5.1
138 * "Vertex URB Entry (VUE) Formats".
143 const float vertices
[GEN6_BLORP_VBO_SIZE
] = {
144 /* v0 */ 0, 0, 0, 0, (float) params
->x0
, (float) params
->y1
, 0, 1,
145 /* v1 */ 0, 0, 0, 0, (float) params
->x1
, (float) params
->y1
, 0, 1,
146 /* v2 */ 0, 0, 0, 0, (float) params
->x0
, (float) params
->y0
, 0, 1,
149 vertex_data
= (float *) brw_state_batch(brw
, AUB_TRACE_VERTEX_BUFFER
,
150 GEN6_BLORP_VBO_SIZE
, 32,
152 memcpy(vertex_data
, vertices
, GEN6_BLORP_VBO_SIZE
);
155 /* 3DSTATE_VERTEX_BUFFERS */
157 const int num_buffers
= 1;
158 const int batch_length
= 1 + 4 * num_buffers
;
160 uint32_t dw0
= GEN6_VB0_ACCESS_VERTEXDATA
|
161 (GEN6_BLORP_NUM_VUE_ELEMS
* sizeof(float)) << BRW_VB0_PITCH_SHIFT
;
164 dw0
|= GEN7_VB0_ADDRESS_MODIFYENABLE
;
167 dw0
|= GEN7_MOCS_L3
<< 16;
169 BEGIN_BATCH(batch_length
);
170 OUT_BATCH((_3DSTATE_VERTEX_BUFFERS
<< 16) | (batch_length
- 2));
173 OUT_RELOC(brw
->batch
.bo
, I915_GEM_DOMAIN_VERTEX
, 0,
176 OUT_RELOC(brw
->batch
.bo
, I915_GEM_DOMAIN_VERTEX
, 0,
177 vertex_offset
+ GEN6_BLORP_VBO_SIZE
- 1);
182 /* 3DSTATE_VERTEX_ELEMENTS
184 * Fetch dwords 0 - 7 from each VUE. See the comments above where
185 * the vertex_bo is filled with data.
188 const int num_elements
= 2;
189 const int batch_length
= 1 + 2 * num_elements
;
191 BEGIN_BATCH(batch_length
);
192 OUT_BATCH((_3DSTATE_VERTEX_ELEMENTS
<< 16) | (batch_length
- 2));
194 OUT_BATCH(GEN6_VE0_VALID
|
195 BRW_SURFACEFORMAT_R32G32B32A32_FLOAT
<< BRW_VE0_FORMAT_SHIFT
|
196 0 << BRW_VE0_SRC_OFFSET_SHIFT
);
197 OUT_BATCH(BRW_VE1_COMPONENT_STORE_SRC
<< BRW_VE1_COMPONENT_0_SHIFT
|
198 BRW_VE1_COMPONENT_STORE_SRC
<< BRW_VE1_COMPONENT_1_SHIFT
|
199 BRW_VE1_COMPONENT_STORE_SRC
<< BRW_VE1_COMPONENT_2_SHIFT
|
200 BRW_VE1_COMPONENT_STORE_SRC
<< BRW_VE1_COMPONENT_3_SHIFT
);
202 OUT_BATCH(GEN6_VE0_VALID
|
203 BRW_SURFACEFORMAT_R32G32B32A32_FLOAT
<< BRW_VE0_FORMAT_SHIFT
|
204 16 << BRW_VE0_SRC_OFFSET_SHIFT
);
205 OUT_BATCH(BRW_VE1_COMPONENT_STORE_SRC
<< BRW_VE1_COMPONENT_0_SHIFT
|
206 BRW_VE1_COMPONENT_STORE_SRC
<< BRW_VE1_COMPONENT_1_SHIFT
|
207 BRW_VE1_COMPONENT_STORE_SRC
<< BRW_VE1_COMPONENT_2_SHIFT
|
208 BRW_VE1_COMPONENT_STORE_SRC
<< BRW_VE1_COMPONENT_3_SHIFT
);
216 * Assign the entire URB to the VS. Even though the VS disabled, URB space
217 * is still needed because the clipper loads the VUE's from the URB. From
218 * the Sandybridge PRM, Volume 2, Part 1, Section 3DSTATE,
219 * Dword 1.15:0 "VS Number of URB Entries":
220 * This field is always used (even if VS Function Enable is DISABLED).
222 * The warning below appears in the PRM (Section 3DSTATE_URB), but we can
223 * safely ignore it because this batch contains only one draw call.
224 * Because of URB corruption caused by allocating a previous GS unit
225 * URB entry to the VS unit, software is required to send a “GS NULL
226 * Fence” (Send URB fence with VS URB size == 1 and GS URB size == 0)
227 * plus a dummy DRAW call before any case where VS will be taking over
231 gen6_blorp_emit_urb_config(struct brw_context
*brw
,
232 const brw_blorp_params
*params
)
235 OUT_BATCH(_3DSTATE_URB
<< 16 | (3 - 2));
236 OUT_BATCH(brw
->urb
.max_vs_entries
<< GEN6_URB_VS_ENTRIES_SHIFT
);
244 gen6_blorp_emit_blend_state(struct brw_context
*brw
,
245 const brw_blorp_params
*params
)
247 uint32_t cc_blend_state_offset
;
249 struct gen6_blend_state
*blend
= (struct gen6_blend_state
*)
250 brw_state_batch(brw
, AUB_TRACE_BLEND_STATE
,
251 sizeof(struct gen6_blend_state
), 64,
252 &cc_blend_state_offset
);
254 memset(blend
, 0, sizeof(*blend
));
256 blend
->blend1
.pre_blend_clamp_enable
= 1;
257 blend
->blend1
.post_blend_clamp_enable
= 1;
258 blend
->blend1
.clamp_range
= BRW_RENDERTARGET_CLAMPRANGE_FORMAT
;
260 blend
->blend1
.write_disable_r
= params
->color_write_disable
[0];
261 blend
->blend1
.write_disable_g
= params
->color_write_disable
[1];
262 blend
->blend1
.write_disable_b
= params
->color_write_disable
[2];
263 blend
->blend1
.write_disable_a
= params
->color_write_disable
[3];
265 /* When blitting from an XRGB source to a ARGB destination, we need to
266 * interpret the missing channel as 1.0. Blending can do that for us:
267 * we simply use the RGB values from the fragment shader ("source RGB"),
268 * but smash the alpha channel to 1.
270 if (params
->src
.mt
&&
271 _mesa_get_format_bits(params
->dst
.mt
->format
, GL_ALPHA_BITS
) > 0 &&
272 _mesa_get_format_bits(params
->src
.mt
->format
, GL_ALPHA_BITS
) == 0) {
273 blend
->blend0
.blend_enable
= 1;
274 blend
->blend0
.ia_blend_enable
= 1;
276 blend
->blend0
.blend_func
= BRW_BLENDFUNCTION_ADD
;
277 blend
->blend0
.ia_blend_func
= BRW_BLENDFUNCTION_ADD
;
279 blend
->blend0
.source_blend_factor
= BRW_BLENDFACTOR_SRC_COLOR
;
280 blend
->blend0
.dest_blend_factor
= BRW_BLENDFACTOR_ZERO
;
281 blend
->blend0
.ia_source_blend_factor
= BRW_BLENDFACTOR_ONE
;
282 blend
->blend0
.ia_dest_blend_factor
= BRW_BLENDFACTOR_ZERO
;
285 return cc_blend_state_offset
;
291 gen6_blorp_emit_cc_state(struct brw_context
*brw
,
292 const brw_blorp_params
*params
)
294 uint32_t cc_state_offset
;
296 struct gen6_color_calc_state
*cc
= (struct gen6_color_calc_state
*)
297 brw_state_batch(brw
, AUB_TRACE_CC_STATE
,
298 sizeof(gen6_color_calc_state
), 64,
300 memset(cc
, 0, sizeof(*cc
));
302 return cc_state_offset
;
307 * \param out_offset is relative to
308 * CMD_STATE_BASE_ADDRESS.DynamicStateBaseAddress.
311 gen6_blorp_emit_depth_stencil_state(struct brw_context
*brw
,
312 const brw_blorp_params
*params
)
314 uint32_t depthstencil_offset
;
316 struct gen6_depth_stencil_state
*state
;
317 state
= (struct gen6_depth_stencil_state
*)
318 brw_state_batch(brw
, AUB_TRACE_DEPTH_STENCIL_STATE
,
320 &depthstencil_offset
);
321 memset(state
, 0, sizeof(*state
));
323 /* See the following sections of the Sandy Bridge PRM, Volume 1, Part2:
324 * - 7.5.3.1 Depth Buffer Clear
325 * - 7.5.3.2 Depth Buffer Resolve
326 * - 7.5.3.3 Hierarchical Depth Buffer Resolve
328 state
->ds2
.depth_write_enable
= 1;
329 if (params
->hiz_op
== GEN6_HIZ_OP_DEPTH_RESOLVE
) {
330 state
->ds2
.depth_test_enable
= 1;
331 state
->ds2
.depth_test_func
= BRW_COMPAREFUNCTION_NEVER
;
334 return depthstencil_offset
;
338 /* 3DSTATE_CC_STATE_POINTERS
340 * The pointer offsets are relative to
341 * CMD_STATE_BASE_ADDRESS.DynamicStateBaseAddress.
343 * The HiZ op doesn't use BLEND_STATE or COLOR_CALC_STATE.
346 gen6_blorp_emit_cc_state_pointers(struct brw_context
*brw
,
347 const brw_blorp_params
*params
,
348 uint32_t cc_blend_state_offset
,
349 uint32_t depthstencil_offset
,
350 uint32_t cc_state_offset
)
353 OUT_BATCH(_3DSTATE_CC_STATE_POINTERS
<< 16 | (4 - 2));
354 OUT_BATCH(cc_blend_state_offset
| 1); /* BLEND_STATE offset */
355 OUT_BATCH(depthstencil_offset
| 1); /* DEPTH_STENCIL_STATE offset */
356 OUT_BATCH(cc_state_offset
| 1); /* COLOR_CALC_STATE offset */
361 /* WM push constants */
363 gen6_blorp_emit_wm_constants(struct brw_context
*brw
,
364 const brw_blorp_params
*params
)
366 uint32_t wm_push_const_offset
;
368 void *constants
= brw_state_batch(brw
, AUB_TRACE_WM_CONSTANTS
,
369 sizeof(params
->wm_push_consts
),
370 32, &wm_push_const_offset
);
371 memcpy(constants
, ¶ms
->wm_push_consts
,
372 sizeof(params
->wm_push_consts
));
374 return wm_push_const_offset
;
378 /* SURFACE_STATE for renderbuffer or texture surface (see
379 * brw_update_renderbuffer_surface and brw_update_texture_surface)
382 gen6_blorp_emit_surface_state(struct brw_context
*brw
,
383 const brw_blorp_params
*params
,
384 const brw_blorp_surface_info
*surface
,
385 uint32_t read_domains
, uint32_t write_domain
)
387 uint32_t wm_surf_offset
;
388 uint32_t width
= surface
->width
;
389 uint32_t height
= surface
->height
;
390 if (surface
->num_samples
> 1) {
391 /* Since gen6 uses INTEL_MSAA_LAYOUT_IMS, width and height are measured
392 * in samples. But SURFACE_STATE wants them in pixels, so we need to
393 * divide them each by 2.
398 struct intel_region
*region
= surface
->mt
->region
;
399 uint32_t tile_x
, tile_y
;
401 uint32_t *surf
= (uint32_t *)
402 brw_state_batch(brw
, AUB_TRACE_SURFACE_STATE
, 6 * 4, 32,
405 surf
[0] = (BRW_SURFACE_2D
<< BRW_SURFACE_TYPE_SHIFT
|
406 BRW_SURFACE_MIPMAPLAYOUT_BELOW
<< BRW_SURFACE_MIPLAYOUT_SHIFT
|
407 BRW_SURFACE_CUBEFACE_ENABLES
|
408 surface
->brw_surfaceformat
<< BRW_SURFACE_FORMAT_SHIFT
);
411 surf
[1] = (surface
->compute_tile_offsets(&tile_x
, &tile_y
) +
414 surf
[2] = (0 << BRW_SURFACE_LOD_SHIFT
|
415 (width
- 1) << BRW_SURFACE_WIDTH_SHIFT
|
416 (height
- 1) << BRW_SURFACE_HEIGHT_SHIFT
);
418 uint32_t tiling
= surface
->map_stencil_as_y_tiled
419 ? BRW_SURFACE_TILED
| BRW_SURFACE_TILED_Y
420 : brw_get_surface_tiling_bits(region
->tiling
);
421 uint32_t pitch_bytes
= region
->pitch
;
422 if (surface
->map_stencil_as_y_tiled
)
425 0 << BRW_SURFACE_DEPTH_SHIFT
|
426 (pitch_bytes
- 1) << BRW_SURFACE_PITCH_SHIFT
);
428 surf
[4] = brw_get_surface_num_multisamples(surface
->num_samples
);
430 /* Note that the low bits of these fields are missing, so
431 * there's the possibility of getting in trouble.
433 assert(tile_x
% 4 == 0);
434 assert(tile_y
% 2 == 0);
435 surf
[5] = ((tile_x
/ 4) << BRW_SURFACE_X_OFFSET_SHIFT
|
436 (tile_y
/ 2) << BRW_SURFACE_Y_OFFSET_SHIFT
|
437 (surface
->mt
->align_h
== 4 ?
438 BRW_SURFACE_VERTICAL_ALIGN_ENABLE
: 0));
440 /* Emit relocation to surface contents */
441 drm_intel_bo_emit_reloc(brw
->batch
.bo
,
444 surf
[1] - region
->bo
->offset
,
445 read_domains
, write_domain
);
447 return wm_surf_offset
;
451 /* BINDING_TABLE. See brw_wm_binding_table(). */
453 gen6_blorp_emit_binding_table(struct brw_context
*brw
,
454 const brw_blorp_params
*params
,
455 uint32_t wm_surf_offset_renderbuffer
,
456 uint32_t wm_surf_offset_texture
)
458 uint32_t wm_bind_bo_offset
;
459 uint32_t *bind
= (uint32_t *)
460 brw_state_batch(brw
, AUB_TRACE_BINDING_TABLE
,
462 BRW_BLORP_NUM_BINDING_TABLE_ENTRIES
,
465 bind
[BRW_BLORP_RENDERBUFFER_BINDING_TABLE_INDEX
] =
466 wm_surf_offset_renderbuffer
;
467 bind
[BRW_BLORP_TEXTURE_BINDING_TABLE_INDEX
] = wm_surf_offset_texture
;
469 return wm_bind_bo_offset
;
474 * SAMPLER_STATE. See brw_update_sampler_state().
477 gen6_blorp_emit_sampler_state(struct brw_context
*brw
,
478 const brw_blorp_params
*params
)
480 uint32_t sampler_offset
;
482 struct brw_sampler_state
*sampler
= (struct brw_sampler_state
*)
483 brw_state_batch(brw
, AUB_TRACE_SAMPLER_STATE
,
484 sizeof(struct brw_sampler_state
),
485 32, &sampler_offset
);
486 memset(sampler
, 0, sizeof(*sampler
));
488 sampler
->ss0
.min_filter
= BRW_MAPFILTER_LINEAR
;
489 sampler
->ss0
.mip_filter
= BRW_MIPFILTER_NONE
;
490 sampler
->ss0
.mag_filter
= BRW_MAPFILTER_LINEAR
;
492 sampler
->ss1
.r_wrap_mode
= BRW_TEXCOORDMODE_CLAMP
;
493 sampler
->ss1
.s_wrap_mode
= BRW_TEXCOORDMODE_CLAMP
;
494 sampler
->ss1
.t_wrap_mode
= BRW_TEXCOORDMODE_CLAMP
;
496 sampler
->ss0
.min_mag_neq
= 1;
500 sampler
->ss0
.lod_bias
= 0;
502 sampler
->ss0
.lod_preclamp
= 1; /* OpenGL mode */
503 sampler
->ss0
.default_color_mode
= 0; /* OpenGL/DX10 mode */
505 /* Set BaseMipLevel, MaxLOD, MinLOD:
507 * XXX: I don't think that using firstLevel, lastLevel works,
508 * because we always setup the surface state as if firstLevel ==
509 * level zero. Probably have to subtract firstLevel from each of
512 sampler
->ss0
.base_level
= U_FIXED(0, 1);
514 sampler
->ss1
.max_lod
= U_FIXED(0, 6);
515 sampler
->ss1
.min_lod
= U_FIXED(0, 6);
517 sampler
->ss3
.non_normalized_coord
= 1;
519 sampler
->ss3
.address_round
|= BRW_ADDRESS_ROUNDING_ENABLE_U_MIN
|
520 BRW_ADDRESS_ROUNDING_ENABLE_V_MIN
|
521 BRW_ADDRESS_ROUNDING_ENABLE_R_MIN
;
522 sampler
->ss3
.address_round
|= BRW_ADDRESS_ROUNDING_ENABLE_U_MAG
|
523 BRW_ADDRESS_ROUNDING_ENABLE_V_MAG
|
524 BRW_ADDRESS_ROUNDING_ENABLE_R_MAG
;
526 return sampler_offset
;
531 * 3DSTATE_SAMPLER_STATE_POINTERS. See upload_sampler_state_pointers().
534 gen6_blorp_emit_sampler_state_pointers(struct brw_context
*brw
,
535 const brw_blorp_params
*params
,
536 uint32_t sampler_offset
)
539 OUT_BATCH(_3DSTATE_SAMPLER_STATE_POINTERS
<< 16 |
540 VS_SAMPLER_STATE_CHANGE
|
541 GS_SAMPLER_STATE_CHANGE
|
542 PS_SAMPLER_STATE_CHANGE
|
544 OUT_BATCH(0); /* VS */
545 OUT_BATCH(0); /* GS */
546 OUT_BATCH(sampler_offset
);
553 * Disable vertex shader.
556 gen6_blorp_emit_vs_disable(struct brw_context
*brw
,
557 const brw_blorp_params
*params
)
560 /* From the BSpec, 3D Pipeline > Geometry > Vertex Shader > State,
561 * 3DSTATE_VS, Dword 5.0 "VS Function Enable":
563 * [DevSNB] A pipeline flush must be programmed prior to a
564 * 3DSTATE_VS command that causes the VS Function Enable to
565 * toggle. Pipeline flush can be executed by sending a PIPE_CONTROL
566 * command with CS stall bit set and a post sync operation.
568 intel_emit_post_sync_nonzero_flush(brw
);
571 /* Disable the push constant buffers. */
573 OUT_BATCH(_3DSTATE_CONSTANT_VS
<< 16 | (5 - 2));
581 OUT_BATCH(_3DSTATE_VS
<< 16 | (6 - 2));
593 * Disable the geometry shader.
596 gen6_blorp_emit_gs_disable(struct brw_context
*brw
,
597 const brw_blorp_params
*params
)
599 /* Disable all the constant buffers. */
601 OUT_BATCH(_3DSTATE_CONSTANT_GS
<< 16 | (5 - 2));
609 OUT_BATCH(_3DSTATE_GS
<< 16 | (7 - 2));
622 * Disable the clipper.
624 * The BLORP op emits a rectangle primitive, which requires clipping to
625 * be disabled. From page 10 of the Sandy Bridge PRM Volume 2 Part 1
626 * Section 1.3 "3D Primitives Overview":
628 * Either the CLIP unit should be DISABLED, or the CLIP unit's Clip
629 * Mode should be set to a value other than CLIPMODE_NORMAL.
631 * Also disable perspective divide. This doesn't change the clipper's
632 * output, but does spare a few electrons.
635 gen6_blorp_emit_clip_disable(struct brw_context
*brw
,
636 const brw_blorp_params
*params
)
639 OUT_BATCH(_3DSTATE_CLIP
<< 16 | (4 - 2));
641 OUT_BATCH(GEN6_CLIP_PERSPECTIVE_DIVIDE_DISABLE
);
649 * Disable ViewportTransformEnable (dw2.1)
651 * From the SandyBridge PRM, Volume 2, Part 1, Section 1.3, "3D
652 * Primitives Overview":
653 * RECTLIST: Viewport Mapping must be DISABLED (as is typical with the
654 * use of screen- space coordinates).
656 * A solid rectangle must be rendered, so set FrontFaceFillMode (dw2.4:3)
657 * and BackFaceFillMode (dw2.5:6) to SOLID(0).
659 * From the Sandy Bridge PRM, Volume 2, Part 1, Section
660 * 6.4.1.1 3DSTATE_SF, Field FrontFaceFillMode:
661 * SOLID: Any triangle or rectangle object found to be front-facing
662 * is rendered as a solid object. This setting is required when
663 * (rendering rectangle (RECTLIST) objects.
666 gen6_blorp_emit_sf_config(struct brw_context
*brw
,
667 const brw_blorp_params
*params
)
670 OUT_BATCH(_3DSTATE_SF
<< 16 | (20 - 2));
671 OUT_BATCH((1 - 1) << GEN6_SF_NUM_OUTPUTS_SHIFT
| /* only position */
672 1 << GEN6_SF_URB_ENTRY_READ_LENGTH_SHIFT
|
673 0 << GEN6_SF_URB_ENTRY_READ_OFFSET_SHIFT
);
674 OUT_BATCH(0); /* dw2 */
675 OUT_BATCH(params
->num_samples
> 1 ? GEN6_SF_MSRAST_ON_PATTERN
: 0);
676 for (int i
= 0; i
< 16; ++i
)
683 * Enable or disable thread dispatch and set the HiZ op appropriately.
686 gen6_blorp_emit_wm_config(struct brw_context
*brw
,
687 const brw_blorp_params
*params
,
688 uint32_t prog_offset
,
689 brw_blorp_prog_data
*prog_data
)
691 uint32_t dw2
, dw4
, dw5
, dw6
;
693 /* Even when thread dispatch is disabled, max threads (dw5.25:31) must be
694 * nonzero to prevent the GPU from hanging. While the documentation doesn't
695 * mention this explicitly, it notes that the valid range for the field is
696 * [1,39] = [2,40] threads, which excludes zero.
698 * To be safe (and to minimize extraneous code) we go ahead and fully
699 * configure the WM state whether or not there is a WM program.
702 dw2
= dw4
= dw5
= dw6
= 0;
703 switch (params
->hiz_op
) {
704 case GEN6_HIZ_OP_DEPTH_CLEAR
:
705 dw4
|= GEN6_WM_DEPTH_CLEAR
;
707 case GEN6_HIZ_OP_DEPTH_RESOLVE
:
708 dw4
|= GEN6_WM_DEPTH_RESOLVE
;
710 case GEN6_HIZ_OP_HIZ_RESOLVE
:
711 dw4
|= GEN6_WM_HIERARCHICAL_DEPTH_RESOLVE
;
713 case GEN6_HIZ_OP_NONE
:
719 dw5
|= GEN6_WM_LINE_AA_WIDTH_1_0
;
720 dw5
|= GEN6_WM_LINE_END_CAP_AA_WIDTH_0_5
;
721 dw5
|= (brw
->max_wm_threads
- 1) << GEN6_WM_MAX_THREADS_SHIFT
;
722 dw6
|= 0 << GEN6_WM_BARYCENTRIC_INTERPOLATION_MODE_SHIFT
; /* No interp */
723 dw6
|= 0 << GEN6_WM_NUM_SF_OUTPUTS_SHIFT
; /* No inputs from SF */
724 if (params
->use_wm_prog
) {
725 dw2
|= 1 << GEN6_WM_SAMPLER_COUNT_SHIFT
; /* Up to 4 samplers */
726 dw4
|= prog_data
->first_curbe_grf
<< GEN6_WM_DISPATCH_START_GRF_SHIFT_0
;
727 dw5
|= GEN6_WM_16_DISPATCH_ENABLE
;
728 dw5
|= GEN6_WM_KILL_ENABLE
; /* TODO: temporarily smash on */
729 dw5
|= GEN6_WM_DISPATCH_ENABLE
; /* We are rendering */
732 if (params
->num_samples
> 1) {
733 dw6
|= GEN6_WM_MSRAST_ON_PATTERN
;
734 if (prog_data
&& prog_data
->persample_msaa_dispatch
)
735 dw6
|= GEN6_WM_MSDISPMODE_PERSAMPLE
;
737 dw6
|= GEN6_WM_MSDISPMODE_PERPIXEL
;
739 dw6
|= GEN6_WM_MSRAST_OFF_PIXEL
;
740 dw6
|= GEN6_WM_MSDISPMODE_PERSAMPLE
;
744 OUT_BATCH(_3DSTATE_WM
<< 16 | (9 - 2));
745 OUT_BATCH(params
->use_wm_prog
? prog_offset
: 0);
747 OUT_BATCH(0); /* No scratch needed */
751 OUT_BATCH(0); /* No other programs */
752 OUT_BATCH(0); /* No other programs */
758 gen6_blorp_emit_constant_ps(struct brw_context
*brw
,
759 const brw_blorp_params
*params
,
760 uint32_t wm_push_const_offset
)
762 /* Make sure the push constants fill an exact integer number of
765 assert(sizeof(brw_blorp_wm_push_constants
) % 32 == 0);
767 /* There must be at least one register worth of push constant data. */
768 assert(BRW_BLORP_NUM_PUSH_CONST_REGS
> 0);
770 /* Enable push constant buffer 0. */
772 OUT_BATCH(_3DSTATE_CONSTANT_PS
<< 16 |
773 GEN6_CONSTANT_BUFFER_0_ENABLE
|
775 OUT_BATCH(wm_push_const_offset
+ (BRW_BLORP_NUM_PUSH_CONST_REGS
- 1));
783 gen6_blorp_emit_constant_ps_disable(struct brw_context
*brw
,
784 const brw_blorp_params
*params
)
786 /* Disable the push constant buffers. */
788 OUT_BATCH(_3DSTATE_CONSTANT_PS
<< 16 | (5 - 2));
797 * 3DSTATE_BINDING_TABLE_POINTERS
800 gen6_blorp_emit_binding_table_pointers(struct brw_context
*brw
,
801 const brw_blorp_params
*params
,
802 uint32_t wm_bind_bo_offset
)
805 OUT_BATCH(_3DSTATE_BINDING_TABLE_POINTERS
<< 16 |
806 GEN6_BINDING_TABLE_MODIFY_PS
|
808 OUT_BATCH(0); /* vs -- ignored */
809 OUT_BATCH(0); /* gs -- ignored */
810 OUT_BATCH(wm_bind_bo_offset
); /* wm/ps */
816 gen6_blorp_emit_depth_stencil_config(struct brw_context
*brw
,
817 const brw_blorp_params
*params
)
819 struct gl_context
*ctx
= &brw
->ctx
;
820 uint32_t draw_x
= params
->depth
.x_offset
;
821 uint32_t draw_y
= params
->depth
.y_offset
;
822 uint32_t tile_mask_x
, tile_mask_y
;
824 brw_get_depthstencil_tile_masks(params
->depth
.mt
,
828 &tile_mask_x
, &tile_mask_y
);
830 /* 3DSTATE_DEPTH_BUFFER */
832 uint32_t tile_x
= draw_x
& tile_mask_x
;
833 uint32_t tile_y
= draw_y
& tile_mask_y
;
835 intel_region_get_aligned_offset(params
->depth
.mt
->region
,
836 draw_x
& ~tile_mask_x
,
837 draw_y
& ~tile_mask_y
, false);
839 /* According to the Sandy Bridge PRM, volume 2 part 1, pp326-327
840 * (3DSTATE_DEPTH_BUFFER dw5), in the documentation for "Depth
841 * Coordinate Offset X/Y":
843 * "The 3 LSBs of both offsets must be zero to ensure correct
846 * We have no guarantee that tile_x and tile_y are correctly aligned,
847 * since they are determined by the mipmap layout, which is only aligned
850 * So, to avoid hanging the GPU, just smash the low order 3 bits of
851 * tile_x and tile_y to 0. This is a temporary workaround until we come
852 * up with a better solution.
854 WARN_ONCE((tile_x
& 7) || (tile_y
& 7),
855 "Depth/stencil buffer needs alignment to 8-pixel boundaries.\n"
856 "Truncating offset, bad rendering may occur.\n");
860 intel_emit_post_sync_nonzero_flush(brw
);
861 intel_emit_depth_stall_flushes(brw
);
864 OUT_BATCH(_3DSTATE_DEPTH_BUFFER
<< 16 | (7 - 2));
865 OUT_BATCH((params
->depth
.mt
->region
->pitch
- 1) |
866 params
->depth_format
<< 18 |
867 1 << 21 | /* separate stencil enable */
868 1 << 22 | /* hiz enable */
869 BRW_TILEWALK_YMAJOR
<< 26 |
870 1 << 27 | /* y-tiled */
871 BRW_SURFACE_2D
<< 29);
872 OUT_RELOC(params
->depth
.mt
->region
->bo
,
873 I915_GEM_DOMAIN_RENDER
, I915_GEM_DOMAIN_RENDER
,
875 OUT_BATCH(BRW_SURFACE_MIPMAPLAYOUT_BELOW
<< 1 |
876 (params
->depth
.width
+ tile_x
- 1) << 6 |
877 (params
->depth
.height
+ tile_y
- 1) << 19);
885 /* 3DSTATE_HIER_DEPTH_BUFFER */
887 struct intel_region
*hiz_region
= params
->depth
.mt
->hiz_mt
->region
;
888 uint32_t hiz_offset
=
889 intel_region_get_aligned_offset(hiz_region
,
890 draw_x
& ~tile_mask_x
,
891 (draw_y
& ~tile_mask_y
) / 2, false);
894 OUT_BATCH((_3DSTATE_HIER_DEPTH_BUFFER
<< 16) | (3 - 2));
895 OUT_BATCH(hiz_region
->pitch
- 1);
896 OUT_RELOC(hiz_region
->bo
,
897 I915_GEM_DOMAIN_RENDER
, I915_GEM_DOMAIN_RENDER
,
902 /* 3DSTATE_STENCIL_BUFFER */
905 OUT_BATCH((_3DSTATE_STENCIL_BUFFER
<< 16) | (3 - 2));
914 gen6_blorp_emit_depth_disable(struct brw_context
*brw
,
915 const brw_blorp_params
*params
)
918 OUT_BATCH(_3DSTATE_DEPTH_BUFFER
<< 16 | (7 - 2));
919 OUT_BATCH((BRW_DEPTHFORMAT_D32_FLOAT
<< 18) |
920 (BRW_SURFACE_NULL
<< 29));
930 /* 3DSTATE_CLEAR_PARAMS
932 * From the Sandybridge PRM, Volume 2, Part 1, Section 3DSTATE_CLEAR_PARAMS:
933 * [DevSNB] 3DSTATE_CLEAR_PARAMS packet must follow the DEPTH_BUFFER_STATE
934 * packet when HiZ is enabled and the DEPTH_BUFFER_STATE changes.
937 gen6_blorp_emit_clear_params(struct brw_context
*brw
,
938 const brw_blorp_params
*params
)
941 OUT_BATCH(_3DSTATE_CLEAR_PARAMS
<< 16 |
942 GEN5_DEPTH_CLEAR_VALID
|
944 OUT_BATCH(params
->depth
.mt
? params
->depth
.mt
->depth_clear_value
: 0);
949 /* 3DSTATE_DRAWING_RECTANGLE */
951 gen6_blorp_emit_drawing_rectangle(struct brw_context
*brw
,
952 const brw_blorp_params
*params
)
955 OUT_BATCH(_3DSTATE_DRAWING_RECTANGLE
<< 16 | (4 - 2));
957 OUT_BATCH(((params
->x1
- 1) & 0xffff) |
958 ((params
->y1
- 1) << 16));
963 /* 3DSTATE_VIEWPORT_STATE_POINTERS */
965 gen6_blorp_emit_viewport_state(struct brw_context
*brw
,
966 const brw_blorp_params
*params
)
968 struct brw_cc_viewport
*ccv
;
969 uint32_t cc_vp_offset
;
971 ccv
= (struct brw_cc_viewport
*)brw_state_batch(brw
, AUB_TRACE_CC_VP_STATE
,
975 ccv
->min_depth
= 0.0;
976 ccv
->max_depth
= 1.0;
979 OUT_BATCH(_3DSTATE_VIEWPORT_STATE_POINTERS
<< 16 | (4 - 2) |
980 GEN6_CC_VIEWPORT_MODIFY
);
981 OUT_BATCH(0); /* clip VP */
982 OUT_BATCH(0); /* SF VP */
983 OUT_BATCH(cc_vp_offset
);
990 gen6_blorp_emit_primitive(struct brw_context
*brw
,
991 const brw_blorp_params
*params
)
994 OUT_BATCH(CMD_3D_PRIM
<< 16 | (6 - 2) |
995 _3DPRIM_RECTLIST
<< GEN4_3DPRIM_TOPOLOGY_TYPE_SHIFT
|
996 GEN4_3DPRIM_VERTEXBUFFER_ACCESS_SEQUENTIAL
);
997 OUT_BATCH(3); /* vertex count per instance */
999 OUT_BATCH(1); /* instance count */
1007 * \brief Execute a blit or render pass operation.
1009 * To execute the operation, this function manually constructs and emits a
1010 * batch to draw a rectangle primitive. The batchbuffer is flushed before
1011 * constructing and after emitting the batch.
1013 * This function alters no GL state.
1016 gen6_blorp_exec(struct brw_context
*brw
,
1017 const brw_blorp_params
*params
)
1019 brw_blorp_prog_data
*prog_data
= NULL
;
1020 uint32_t cc_blend_state_offset
= 0;
1021 uint32_t cc_state_offset
= 0;
1022 uint32_t depthstencil_offset
;
1023 uint32_t wm_push_const_offset
= 0;
1024 uint32_t wm_bind_bo_offset
= 0;
1026 uint32_t prog_offset
= params
->get_wm_prog(brw
, &prog_data
);
1027 gen6_blorp_emit_batch_head(brw
, params
);
1028 gen6_emit_3dstate_multisample(brw
, params
->num_samples
);
1029 gen6_emit_3dstate_sample_mask(brw
, params
->num_samples
, 1.0, false, ~0u);
1030 gen6_blorp_emit_state_base_address(brw
, params
);
1031 gen6_blorp_emit_vertices(brw
, params
);
1032 gen6_blorp_emit_urb_config(brw
, params
);
1033 if (params
->use_wm_prog
) {
1034 cc_blend_state_offset
= gen6_blorp_emit_blend_state(brw
, params
);
1035 cc_state_offset
= gen6_blorp_emit_cc_state(brw
, params
);
1037 depthstencil_offset
= gen6_blorp_emit_depth_stencil_state(brw
, params
);
1038 gen6_blorp_emit_cc_state_pointers(brw
, params
, cc_blend_state_offset
,
1039 depthstencil_offset
, cc_state_offset
);
1040 if (params
->use_wm_prog
) {
1041 uint32_t wm_surf_offset_renderbuffer
;
1042 uint32_t wm_surf_offset_texture
= 0;
1043 uint32_t sampler_offset
;
1044 wm_push_const_offset
= gen6_blorp_emit_wm_constants(brw
, params
);
1045 intel_miptree_used_for_rendering(params
->dst
.mt
);
1046 wm_surf_offset_renderbuffer
=
1047 gen6_blorp_emit_surface_state(brw
, params
, ¶ms
->dst
,
1048 I915_GEM_DOMAIN_RENDER
,
1049 I915_GEM_DOMAIN_RENDER
);
1050 if (params
->src
.mt
) {
1051 wm_surf_offset_texture
=
1052 gen6_blorp_emit_surface_state(brw
, params
, ¶ms
->src
,
1053 I915_GEM_DOMAIN_SAMPLER
, 0);
1056 gen6_blorp_emit_binding_table(brw
, params
,
1057 wm_surf_offset_renderbuffer
,
1058 wm_surf_offset_texture
);
1059 sampler_offset
= gen6_blorp_emit_sampler_state(brw
, params
);
1060 gen6_blorp_emit_sampler_state_pointers(brw
, params
, sampler_offset
);
1062 gen6_blorp_emit_vs_disable(brw
, params
);
1063 gen6_blorp_emit_gs_disable(brw
, params
);
1064 gen6_blorp_emit_clip_disable(brw
, params
);
1065 gen6_blorp_emit_sf_config(brw
, params
);
1066 if (params
->use_wm_prog
)
1067 gen6_blorp_emit_constant_ps(brw
, params
, wm_push_const_offset
);
1069 gen6_blorp_emit_constant_ps_disable(brw
, params
);
1070 gen6_blorp_emit_wm_config(brw
, params
, prog_offset
, prog_data
);
1071 if (params
->use_wm_prog
)
1072 gen6_blorp_emit_binding_table_pointers(brw
, params
, wm_bind_bo_offset
);
1073 gen6_blorp_emit_viewport_state(brw
, params
);
1075 if (params
->depth
.mt
)
1076 gen6_blorp_emit_depth_stencil_config(brw
, params
);
1078 gen6_blorp_emit_depth_disable(brw
, params
);
1079 gen6_blorp_emit_clear_params(brw
, params
);
1080 gen6_blorp_emit_drawing_rectangle(brw
, params
);
1081 gen6_blorp_emit_primitive(brw
, params
);