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 \
50 * Compute masks to determine how much of draw_x and draw_y should be
51 * performed using the fine adjustment of "depth coordinate offset X/Y"
52 * (dw5 of 3DSTATE_DEPTH_BUFFER). See the emit_depthbuffer() function for
56 gen6_blorp_compute_tile_masks(const brw_blorp_params *params,
57 uint32_t *tile_mask_x, uint32_t *tile_mask_y)
59 uint32_t depth_mask_x, depth_mask_y, hiz_mask_x, hiz_mask_y;
60 intel_region_get_tile_masks(params->depth.mt->region,
61 &depth_mask_x, &depth_mask_y);
62 intel_region_get_tile_masks(params->depth.mt->hiz_mt->region,
63 &hiz_mask_x, &hiz_mask_y);
65 /* Each HiZ row represents 2 rows of pixels */
66 hiz_mask_y = hiz_mask_y << 1 | 1;
68 *tile_mask_x = depth_mask_x | hiz_mask_x;
69 *tile_mask_y = depth_mask_y | hiz_mask_y;
74 gen6_blorp_emit_batch_head(struct brw_context *brw,
75 const brw_blorp_params *params)
77 struct gl_context *ctx = &brw->intel.ctx;
78 struct intel_context *intel = &brw->intel;
80 /* To ensure that the batch contains only the resolve, flush the batch
81 * before beginning and after finishing emitting the resolve packets.
83 * Ideally, we would not need to flush for the resolve op. But, I suspect
84 * that it's unsafe for CMD_PIPELINE_SELECT to occur multiple times in
85 * a single batch, and there is no safe way to ensure that other than by
86 * fencing the resolve with flushes. Ideally, we would just detect if
87 * a batch is in progress and do the right thing, but that would require
88 * the ability to *safely* access brw_context::state::dirty::brw
89 * outside of the brw_upload_state() codepath.
93 /* CMD_PIPELINE_SELECT
95 * Select the 3D pipeline, as opposed to the media pipeline.
99 OUT_BATCH(brw->CMD_PIPELINE_SELECT << 16);
106 * CMD_STATE_BASE_ADDRESS
108 * From the Sandy Bridge PRM, Volume 1, Part 1, Table STATE_BASE_ADDRESS:
109 * The following commands must be reissued following any change to the
111 * 3DSTATE_CC_POINTERS
112 * 3DSTATE_BINDING_TABLE_POINTERS
113 * 3DSTATE_SAMPLER_STATE_POINTERS
114 * 3DSTATE_VIEWPORT_STATE_POINTERS
115 * MEDIA_STATE_POINTERS
118 gen6_blorp_emit_state_base_address(struct brw_context *brw,
119 const brw_blorp_params *params)
121 struct intel_context *intel = &brw->intel;
124 OUT_BATCH(CMD_STATE_BASE_ADDRESS << 16 | (10 - 2));
125 OUT_BATCH(1); /* GeneralStateBaseAddressModifyEnable */
126 /* SurfaceStateBaseAddress */
127 OUT_RELOC(intel->batch.bo, I915_GEM_DOMAIN_SAMPLER, 0, 1);
128 /* DynamicStateBaseAddress */
129 OUT_RELOC(intel->batch.bo, (I915_GEM_DOMAIN_RENDER |
130 I915_GEM_DOMAIN_INSTRUCTION), 0, 1);
131 OUT_BATCH(1); /* IndirectObjectBaseAddress */
132 if (params->use_wm_prog) {
133 OUT_RELOC(brw->cache.bo, I915_GEM_DOMAIN_INSTRUCTION, 0,
134 1); /* Instruction base address: shader kernels */
136 OUT_BATCH(1); /* InstructionBaseAddress */
138 OUT_BATCH(1); /* GeneralStateUpperBound */
139 /* Dynamic state upper bound. Although the documentation says that
140 * programming it to zero will cause it to be ignored, that is a lie.
141 * If this isn't programmed to a real bound, the sampler border color
142 * pointer is rejected, causing border color to mysteriously fail.
144 OUT_BATCH(0xfffff001);
145 OUT_BATCH(1); /* IndirectObjectUpperBound*/
146 OUT_BATCH(1); /* InstructionAccessUpperBound */
152 gen6_blorp_emit_vertices(struct brw_context *brw,
153 const brw_blorp_params *params)
155 struct intel_context *intel = &brw->intel;
156 uint32_t vertex_offset;
158 /* Setup VBO for the rectangle primitive..
160 * A rectangle primitive (3DPRIM_RECTLIST) consists of only three
161 * vertices. The vertices reside in screen space with DirectX coordinates
162 * (that is, (0, 0) is the upper left corner).
169 * Since the VS is disabled, the clipper loads each VUE directly from
170 * the URB. This is controlled by the 3DSTATE_VERTEX_BUFFERS and
171 * 3DSTATE_VERTEX_ELEMENTS packets below. The VUE contents are as follows:
172 * dw0: Reserved, MBZ.
173 * dw1: Render Target Array Index. The HiZ op does not use indexed
174 * vertices, so set the dword to 0.
175 * dw2: Viewport Index. The HiZ op disables viewport mapping and
176 * scissoring, so set the dword to 0.
177 * dw3: Point Width: The HiZ op does not emit the POINTLIST primitive, so
178 * set the dword to 0.
179 * dw4: Vertex Position X.
180 * dw5: Vertex Position Y.
181 * dw6: Vertex Position Z.
182 * dw7: Vertex Position W.
184 * For details, see the Sandybridge PRM, Volume 2, Part 1, Section 1.5.1
185 * "Vertex URB Entry (VUE) Formats".
190 const float vertices[GEN6_BLORP_VBO_SIZE] = {
191 /* v0 */ 0, 0, 0, 0, params->x0, params->y1, 0, 1,
192 /* v1 */ 0, 0, 0, 0, params->x1, params->y1, 0, 1,
193 /* v2 */ 0, 0, 0, 0, params->x0, params->y0, 0, 1,
196 vertex_data = (float *) brw_state_batch(brw, AUB_TRACE_VERTEX_BUFFER,
197 GEN6_BLORP_VBO_SIZE, 32,
199 memcpy(vertex_data, vertices, GEN6_BLORP_VBO_SIZE);
202 /* 3DSTATE_VERTEX_BUFFERS */
204 const int num_buffers = 1;
205 const int batch_length = 1 + 4 * num_buffers;
207 uint32_t dw0 = GEN6_VB0_ACCESS_VERTEXDATA |
208 (GEN6_BLORP_NUM_VUE_ELEMS * sizeof(float)) << BRW_VB0_PITCH_SHIFT;
211 dw0 |= GEN7_VB0_ADDRESS_MODIFYENABLE;
213 BEGIN_BATCH(batch_length);
214 OUT_BATCH((_3DSTATE_VERTEX_BUFFERS << 16) | (batch_length - 2));
217 OUT_RELOC(intel->batch.bo, I915_GEM_DOMAIN_VERTEX, 0,
220 OUT_RELOC(intel->batch.bo, I915_GEM_DOMAIN_VERTEX, 0,
221 vertex_offset + GEN6_BLORP_VBO_SIZE - 1);
226 /* 3DSTATE_VERTEX_ELEMENTS
228 * Fetch dwords 0 - 7 from each VUE. See the comments above where
229 * the vertex_bo is filled with data.
232 const int num_elements = 2;
233 const int batch_length = 1 + 2 * num_elements;
235 BEGIN_BATCH(batch_length);
236 OUT_BATCH((_3DSTATE_VERTEX_ELEMENTS << 16) | (batch_length - 2));
238 OUT_BATCH(GEN6_VE0_VALID |
239 BRW_SURFACEFORMAT_R32G32B32A32_FLOAT << BRW_VE0_FORMAT_SHIFT |
240 0 << BRW_VE0_SRC_OFFSET_SHIFT);
241 OUT_BATCH(BRW_VE1_COMPONENT_STORE_SRC << BRW_VE1_COMPONENT_0_SHIFT |
242 BRW_VE1_COMPONENT_STORE_SRC << BRW_VE1_COMPONENT_1_SHIFT |
243 BRW_VE1_COMPONENT_STORE_SRC << BRW_VE1_COMPONENT_2_SHIFT |
244 BRW_VE1_COMPONENT_STORE_SRC << BRW_VE1_COMPONENT_3_SHIFT);
246 OUT_BATCH(GEN6_VE0_VALID |
247 BRW_SURFACEFORMAT_R32G32B32A32_FLOAT << BRW_VE0_FORMAT_SHIFT |
248 16 << BRW_VE0_SRC_OFFSET_SHIFT);
249 OUT_BATCH(BRW_VE1_COMPONENT_STORE_SRC << BRW_VE1_COMPONENT_0_SHIFT |
250 BRW_VE1_COMPONENT_STORE_SRC << BRW_VE1_COMPONENT_1_SHIFT |
251 BRW_VE1_COMPONENT_STORE_SRC << BRW_VE1_COMPONENT_2_SHIFT |
252 BRW_VE1_COMPONENT_STORE_SRC << BRW_VE1_COMPONENT_3_SHIFT);
260 * Assign the entire URB to the VS. Even though the VS disabled, URB space
261 * is still needed because the clipper loads the VUE's from the URB. From
262 * the Sandybridge PRM, Volume 2, Part 1, Section 3DSTATE,
263 * Dword 1.15:0 "VS Number of URB Entries":
264 * This field is always used (even if VS Function Enable is DISABLED).
266 * The warning below appears in the PRM (Section 3DSTATE_URB), but we can
267 * safely ignore it because this batch contains only one draw call.
268 * Because of URB corruption caused by allocating a previous GS unit
269 * URB entry to the VS unit, software is required to send a “GS NULL
270 * Fence” (Send URB fence with VS URB size == 1 and GS URB size == 0)
271 * plus a dummy DRAW call before any case where VS will be taking over
275 gen6_blorp_emit_urb_config(struct brw_context *brw,
276 const brw_blorp_params *params)
278 struct intel_context *intel = &brw->intel;
281 OUT_BATCH(_3DSTATE_URB << 16 | (3 - 2));
282 OUT_BATCH(brw->urb.max_vs_entries << GEN6_URB_VS_ENTRIES_SHIFT);
290 gen6_blorp_emit_blend_state(struct brw_context *brw,
291 const brw_blorp_params *params)
293 uint32_t cc_blend_state_offset;
295 struct gen6_blend_state *blend = (struct gen6_blend_state *)
296 brw_state_batch(brw, AUB_TRACE_BLEND_STATE,
297 sizeof(struct gen6_blend_state), 64,
298 &cc_blend_state_offset);
300 memset(blend, 0, sizeof(*blend));
302 // TODO: handle other formats.
303 blend->blend1.pre_blend_clamp_enable = 1;
304 blend->blend1.post_blend_clamp_enable = 1;
305 blend->blend1.clamp_range = BRW_RENDERTARGET_CLAMPRANGE_FORMAT;
307 blend->blend1.write_disable_r = false;
308 blend->blend1.write_disable_g = false;
309 blend->blend1.write_disable_b = false;
310 blend->blend1.write_disable_a = false;
312 return cc_blend_state_offset;
318 gen6_blorp_emit_cc_state(struct brw_context *brw,
319 const brw_blorp_params *params)
321 uint32_t cc_state_offset;
323 struct gen6_color_calc_state *cc = (struct gen6_color_calc_state *)
324 brw_state_batch(brw, AUB_TRACE_CC_STATE,
325 sizeof(gen6_color_calc_state), 64,
327 memset(cc, 0, sizeof(*cc));
329 return cc_state_offset;
334 * \param out_offset is relative to
335 * CMD_STATE_BASE_ADDRESS.DynamicStateBaseAddress.
338 gen6_blorp_emit_depth_stencil_state(struct brw_context *brw,
339 const brw_blorp_params *params)
341 uint32_t depthstencil_offset;
343 struct gen6_depth_stencil_state *state;
344 state = (struct gen6_depth_stencil_state *)
345 brw_state_batch(brw, AUB_TRACE_DEPTH_STENCIL_STATE,
347 &depthstencil_offset);
348 memset(state, 0, sizeof(*state));
350 /* See the following sections of the Sandy Bridge PRM, Volume 1, Part2:
351 * - 7.5.3.1 Depth Buffer Clear
352 * - 7.5.3.2 Depth Buffer Resolve
353 * - 7.5.3.3 Hierarchical Depth Buffer Resolve
355 state->ds2.depth_write_enable = 1;
356 if (params->hiz_op == GEN6_HIZ_OP_DEPTH_RESOLVE) {
357 state->ds2.depth_test_enable = 1;
358 state->ds2.depth_test_func = COMPAREFUNC_NEVER;
361 return depthstencil_offset;
365 /* 3DSTATE_CC_STATE_POINTERS
367 * The pointer offsets are relative to
368 * CMD_STATE_BASE_ADDRESS.DynamicStateBaseAddress.
370 * The HiZ op doesn't use BLEND_STATE or COLOR_CALC_STATE.
373 gen6_blorp_emit_cc_state_pointers(struct brw_context *brw,
374 const brw_blorp_params *params,
375 uint32_t cc_blend_state_offset,
376 uint32_t depthstencil_offset,
377 uint32_t cc_state_offset)
379 struct intel_context *intel = &brw->intel;
382 OUT_BATCH(_3DSTATE_CC_STATE_POINTERS << 16 | (4 - 2));
383 OUT_BATCH(cc_blend_state_offset | 1); /* BLEND_STATE offset */
384 OUT_BATCH(depthstencil_offset | 1); /* DEPTH_STENCIL_STATE offset */
385 OUT_BATCH(cc_state_offset | 1); /* COLOR_CALC_STATE offset */
390 /* WM push constants */
392 gen6_blorp_emit_wm_constants(struct brw_context *brw,
393 const brw_blorp_params *params)
395 uint32_t wm_push_const_offset;
397 void *constants = brw_state_batch(brw, AUB_TRACE_WM_CONSTANTS,
398 sizeof(params->wm_push_consts),
399 32, &wm_push_const_offset);
400 memcpy(constants, ¶ms->wm_push_consts,
401 sizeof(params->wm_push_consts));
403 return wm_push_const_offset;
407 /* SURFACE_STATE for renderbuffer or texture surface (see
408 * brw_update_renderbuffer_surface and brw_update_texture_surface)
411 gen6_blorp_emit_surface_state(struct brw_context *brw,
412 const brw_blorp_params *params,
413 const brw_blorp_surface_info *surface,
414 uint32_t read_domains, uint32_t write_domain)
416 uint32_t wm_surf_offset;
417 uint32_t width, height;
418 surface->get_miplevel_dims(&width, &height);
419 if (surface->num_samples > 0) { /* TODO: seems clumsy */
423 if (surface->map_stencil_as_y_tiled) {
427 struct intel_region *region = surface->mt->region;
429 /* TODO: handle other formats */
430 uint32_t format = surface->map_stencil_as_y_tiled
431 ? BRW_SURFACEFORMAT_R8_UNORM : BRW_SURFACEFORMAT_B8G8R8A8_UNORM;
433 uint32_t *surf = (uint32_t *)
434 brw_state_batch(brw, AUB_TRACE_SURFACE_STATE, 6 * 4, 32,
437 surf[0] = (BRW_SURFACE_2D << BRW_SURFACE_TYPE_SHIFT |
438 BRW_SURFACE_MIPMAPLAYOUT_BELOW << BRW_SURFACE_MIPLAYOUT_SHIFT |
439 BRW_SURFACE_CUBEFACE_ENABLES |
440 format << BRW_SURFACE_FORMAT_SHIFT);
443 surf[1] = region->bo->offset; /* No tile offsets needed */
445 surf[2] = (0 << BRW_SURFACE_LOD_SHIFT |
446 (width - 1) << BRW_SURFACE_WIDTH_SHIFT |
447 (height - 1) << BRW_SURFACE_HEIGHT_SHIFT);
449 uint32_t tiling = surface->map_stencil_as_y_tiled
450 ? BRW_SURFACE_TILED | BRW_SURFACE_TILED_Y
451 : brw_get_surface_tiling_bits(region->tiling);
452 uint32_t pitch_bytes = region->pitch * region->cpp;
453 if (surface->map_stencil_as_y_tiled)
456 0 << BRW_SURFACE_DEPTH_SHIFT |
457 (pitch_bytes - 1) << BRW_SURFACE_PITCH_SHIFT);
459 surf[4] = brw_get_surface_num_multisamples(surface->num_samples);
461 surf[5] = (0 << BRW_SURFACE_X_OFFSET_SHIFT |
462 0 << BRW_SURFACE_Y_OFFSET_SHIFT |
463 (surface->mt->align_h == 4 ?
464 BRW_SURFACE_VERTICAL_ALIGN_ENABLE : 0));
466 /* Emit relocation to surface contents */
467 drm_intel_bo_emit_reloc(brw->intel.batch.bo,
470 surf[1] - region->bo->offset,
471 read_domains, write_domain);
473 return wm_surf_offset;
477 /* BINDING_TABLE. See brw_wm_binding_table(). */
479 gen6_blorp_emit_binding_table(struct brw_context *brw,
480 const brw_blorp_params *params,
481 uint32_t wm_surf_offset_renderbuffer,
482 uint32_t wm_surf_offset_texture)
484 uint32_t wm_bind_bo_offset;
485 uint32_t *bind = (uint32_t *)
486 brw_state_batch(brw, AUB_TRACE_BINDING_TABLE,
488 BRW_BLORP_NUM_BINDING_TABLE_ENTRIES,
491 bind[BRW_BLORP_RENDERBUFFER_BINDING_TABLE_INDEX] =
492 wm_surf_offset_renderbuffer;
493 bind[BRW_BLORP_TEXTURE_BINDING_TABLE_INDEX] = wm_surf_offset_texture;
495 return wm_bind_bo_offset;
500 * SAMPLER_STATE. See brw_update_sampler_state().
503 gen6_blorp_emit_sampler_state(struct brw_context *brw,
504 const brw_blorp_params *params)
506 uint32_t sampler_offset;
508 struct brw_sampler_state *sampler = (struct brw_sampler_state *)
509 brw_state_batch(brw, AUB_TRACE_SAMPLER_STATE,
510 sizeof(struct brw_sampler_state),
511 32, &sampler_offset);
512 memset(sampler, 0, sizeof(*sampler));
514 sampler->ss0.min_filter = BRW_MAPFILTER_LINEAR;
515 sampler->ss0.mip_filter = BRW_MIPFILTER_NONE;
516 sampler->ss0.mag_filter = BRW_MAPFILTER_LINEAR;
518 sampler->ss1.r_wrap_mode = BRW_TEXCOORDMODE_CLAMP;
519 sampler->ss1.s_wrap_mode = BRW_TEXCOORDMODE_CLAMP;
520 sampler->ss1.t_wrap_mode = BRW_TEXCOORDMODE_CLAMP;
522 sampler->ss0.min_mag_neq = 1;
526 sampler->ss0.lod_bias = 0;
528 sampler->ss0.lod_preclamp = 1; /* OpenGL mode */
529 sampler->ss0.default_color_mode = 0; /* OpenGL/DX10 mode */
531 /* Set BaseMipLevel, MaxLOD, MinLOD:
533 * XXX: I don't think that using firstLevel, lastLevel works,
534 * because we always setup the surface state as if firstLevel ==
535 * level zero. Probably have to subtract firstLevel from each of
538 sampler->ss0.base_level = U_FIXED(0, 1);
540 sampler->ss1.max_lod = U_FIXED(0, 6);
541 sampler->ss1.min_lod = U_FIXED(0, 6);
543 sampler->ss3.non_normalized_coord = 1;
545 sampler->ss3.address_round |= BRW_ADDRESS_ROUNDING_ENABLE_U_MIN |
546 BRW_ADDRESS_ROUNDING_ENABLE_V_MIN |
547 BRW_ADDRESS_ROUNDING_ENABLE_R_MIN;
548 sampler->ss3.address_round |= BRW_ADDRESS_ROUNDING_ENABLE_U_MAG |
549 BRW_ADDRESS_ROUNDING_ENABLE_V_MAG |
550 BRW_ADDRESS_ROUNDING_ENABLE_R_MAG;
552 return sampler_offset;
557 * 3DSTATE_SAMPLER_STATE_POINTERS. See upload_sampler_state_pointers().
560 gen6_blorp_emit_sampler_state_pointers(struct brw_context *brw,
561 const brw_blorp_params *params,
562 uint32_t sampler_offset)
564 struct intel_context *intel = &brw->intel;
567 OUT_BATCH(_3DSTATE_SAMPLER_STATE_POINTERS << 16 |
568 VS_SAMPLER_STATE_CHANGE |
569 GS_SAMPLER_STATE_CHANGE |
570 PS_SAMPLER_STATE_CHANGE |
572 OUT_BATCH(0); /* VS */
573 OUT_BATCH(0); /* GS */
574 OUT_BATCH(sampler_offset);
581 * Disable vertex shader.
584 gen6_blorp_emit_vs_disable(struct brw_context *brw,
585 const brw_blorp_params *params)
587 struct intel_context *intel = &brw->intel;
589 if (intel->gen == 6) {
590 /* From the BSpec, Volume 2a, Part 3 "Vertex Shader", Section
591 * 3DSTATE_VS, Dword 5.0 "VS Function Enable":
593 * [DevSNB] A pipeline flush must be programmed prior to a
594 * 3DSTATE_VS command that causes the VS Function Enable to
595 * toggle. Pipeline flush can be executed by sending a PIPE_CONTROL
596 * command with CS stall bit set and a post sync operation.
598 intel_emit_post_sync_nonzero_flush(intel);
602 OUT_BATCH(_3DSTATE_VS << 16 | (6 - 2));
614 * Disable the geometry shader.
617 gen6_blorp_emit_gs_disable(struct brw_context *brw,
618 const brw_blorp_params *params)
620 struct intel_context *intel = &brw->intel;
623 OUT_BATCH(_3DSTATE_GS << 16 | (7 - 2));
636 * Disable the clipper.
638 * The BLORP op emits a rectangle primitive, which requires clipping to
639 * be disabled. From page 10 of the Sandy Bridge PRM Volume 2 Part 1
640 * Section 1.3 "3D Primitives Overview":
642 * Either the CLIP unit should be DISABLED, or the CLIP unit's Clip
643 * Mode should be set to a value other than CLIPMODE_NORMAL.
645 * Also disable perspective divide. This doesn't change the clipper's
646 * output, but does spare a few electrons.
649 gen6_blorp_emit_clip_disable(struct brw_context *brw,
650 const brw_blorp_params *params)
652 struct intel_context *intel = &brw->intel;
655 OUT_BATCH(_3DSTATE_CLIP << 16 | (4 - 2));
657 OUT_BATCH(GEN6_CLIP_PERSPECTIVE_DIVIDE_DISABLE);
665 * Disable ViewportTransformEnable (dw2.1)
667 * From the SandyBridge PRM, Volume 2, Part 1, Section 1.3, "3D
668 * Primitives Overview":
669 * RECTLIST: Viewport Mapping must be DISABLED (as is typical with the
670 * use of screen- space coordinates).
672 * A solid rectangle must be rendered, so set FrontFaceFillMode (dw2.4:3)
673 * and BackFaceFillMode (dw2.5:6) to SOLID(0).
675 * From the Sandy Bridge PRM, Volume 2, Part 1, Section
676 * 6.4.1.1 3DSTATE_SF, Field FrontFaceFillMode:
677 * SOLID: Any triangle or rectangle object found to be front-facing
678 * is rendered as a solid object. This setting is required when
679 * (rendering rectangle (RECTLIST) objects.
682 gen6_blorp_emit_sf_config(struct brw_context *brw,
683 const brw_blorp_params *params)
685 struct intel_context *intel = &brw->intel;
688 OUT_BATCH(_3DSTATE_SF << 16 | (20 - 2));
689 OUT_BATCH((1 - 1) << GEN6_SF_NUM_OUTPUTS_SHIFT | /* only position */
690 1 << GEN6_SF_URB_ENTRY_READ_LENGTH_SHIFT |
691 0 << GEN6_SF_URB_ENTRY_READ_OFFSET_SHIFT);
692 OUT_BATCH(0); /* dw2 */
693 OUT_BATCH(params->num_samples > 0 ? GEN6_SF_MSRAST_ON_PATTERN : 0);
694 for (int i = 0; i < 16; ++i)
701 * Enable or disable thread dispatch and set the HiZ op appropriately.
704 gen6_blorp_emit_wm_config(struct brw_context *brw,
705 const brw_blorp_params *params,
706 uint32_t prog_offset,
707 brw_blorp_prog_data *prog_data)
709 struct intel_context *intel = &brw->intel;
710 uint32_t dw2, dw4, dw5, dw6;
712 /* Even when thread dispatch is disabled, max threads (dw5.25:31) must be
713 * nonzero to prevent the GPU from hanging. See the valid ranges in the
714 * BSpec, Volume 2a.11 Windower, Section 3DSTATE_WM, Dword 5.25:31
715 * "Maximum Number Of Threads".
717 * To be safe (and to minimize extraneous code) we go ahead and fully
718 * configure the WM state whether or not there is a WM program.
721 dw2 = dw4 = dw5 = dw6 = 0;
722 switch (params->hiz_op) {
723 case GEN6_HIZ_OP_DEPTH_CLEAR:
724 dw4 |= GEN6_WM_DEPTH_CLEAR;
726 case GEN6_HIZ_OP_DEPTH_RESOLVE:
727 dw4 |= GEN6_WM_DEPTH_RESOLVE;
729 case GEN6_HIZ_OP_HIZ_RESOLVE:
730 dw4 |= GEN6_WM_HIERARCHICAL_DEPTH_RESOLVE;
732 case GEN6_HIZ_OP_NONE:
738 dw4 |= GEN6_WM_STATISTICS_ENABLE;
739 dw5 |= GEN6_WM_LINE_AA_WIDTH_1_0;
740 dw5 |= GEN6_WM_LINE_END_CAP_AA_WIDTH_0_5;
741 dw5 |= (brw->max_wm_threads - 1) << GEN6_WM_MAX_THREADS_SHIFT;
742 dw6 |= 0 << GEN6_WM_BARYCENTRIC_INTERPOLATION_MODE_SHIFT; /* No interp */
743 dw6 |= 0 << GEN6_WM_NUM_SF_OUTPUTS_SHIFT; /* No inputs from SF */
744 if (params->use_wm_prog) {
745 dw2 |= 1 << GEN6_WM_SAMPLER_COUNT_SHIFT; /* Up to 4 samplers */
746 dw4 |= prog_data->first_curbe_grf << GEN6_WM_DISPATCH_START_GRF_SHIFT_0;
747 dw5 |= GEN6_WM_16_DISPATCH_ENABLE;
748 dw5 |= GEN6_WM_KILL_ENABLE; /* TODO: temporarily smash on */
749 dw5 |= GEN6_WM_DISPATCH_ENABLE; /* We are rendering */
752 if (params->num_samples > 0) {
753 dw6 |= GEN6_WM_MSRAST_ON_PATTERN;
754 if (prog_data && prog_data->persample_msaa_dispatch)
755 dw6 |= GEN6_WM_MSDISPMODE_PERSAMPLE;
757 dw6 |= GEN6_WM_MSDISPMODE_PERPIXEL;
759 dw6 |= GEN6_WM_MSRAST_OFF_PIXEL;
760 dw6 |= GEN6_WM_MSDISPMODE_PERSAMPLE;
764 OUT_BATCH(_3DSTATE_WM << 16 | (9 - 2));
765 OUT_BATCH(params->use_wm_prog ? prog_offset : 0);
767 OUT_BATCH(0); /* No scratch needed */
771 OUT_BATCH(0); /* No other programs */
772 OUT_BATCH(0); /* No other programs */
778 gen6_blorp_emit_constant_ps(struct brw_context *brw,
779 const brw_blorp_params *params,
780 uint32_t wm_push_const_offset)
782 struct intel_context *intel = &brw->intel;
784 /* Make sure the push constants fill an exact integer number of
787 assert(sizeof(brw_blorp_wm_push_constants) % 32 == 0);
789 /* There must be at least one register worth of push constant data. */
790 assert(BRW_BLORP_NUM_PUSH_CONST_REGS > 0);
792 /* Enable push constant buffer 0. */
794 OUT_BATCH(_3DSTATE_CONSTANT_PS << 16 |
795 GEN6_CONSTANT_BUFFER_0_ENABLE |
797 OUT_BATCH(wm_push_const_offset + (BRW_BLORP_NUM_PUSH_CONST_REGS - 1));
806 * 3DSTATE_BINDING_TABLE_POINTERS
809 gen6_blorp_emit_binding_table_pointers(struct brw_context *brw,
810 const brw_blorp_params *params,
811 uint32_t wm_bind_bo_offset)
813 struct intel_context *intel = &brw->intel;
816 OUT_BATCH(_3DSTATE_BINDING_TABLE_POINTERS << 16 |
817 GEN6_BINDING_TABLE_MODIFY_PS |
819 OUT_BATCH(0); /* vs -- ignored */
820 OUT_BATCH(0); /* gs -- ignored */
821 OUT_BATCH(wm_bind_bo_offset); /* wm/ps */
827 gen6_blorp_emit_depth_stencil_config(struct brw_context *brw,
828 const brw_blorp_params *params)
830 struct intel_context *intel = &brw->intel;
831 uint32_t draw_x, draw_y;
832 uint32_t tile_mask_x, tile_mask_y;
834 gen6_blorp_compute_tile_masks(params, &tile_mask_x, &tile_mask_y);
835 params->depth.get_draw_offsets(&draw_x, &draw_y);
837 /* 3DSTATE_DEPTH_BUFFER */
839 uint32_t width, height;
840 params->depth.get_miplevel_dims(&width, &height);
842 uint32_t tile_x = draw_x & tile_mask_x;
843 uint32_t tile_y = draw_y & tile_mask_y;
845 intel_region_get_aligned_offset(params->depth.mt->region,
846 draw_x & ~tile_mask_x,
847 draw_y & ~tile_mask_y);
849 /* According to the Sandy Bridge PRM, volume 2 part 1, pp326-327
850 * (3DSTATE_DEPTH_BUFFER dw5), in the documentation for "Depth
851 * Coordinate Offset X/Y":
853 * "The 3 LSBs of both offsets must be zero to ensure correct
856 * We have no guarantee that tile_x and tile_y are correctly aligned,
857 * since they are determined by the mipmap layout, which is only aligned
860 * So, to avoid hanging the GPU, just smash the low order 3 bits of
861 * tile_x and tile_y to 0. This is a temporary workaround until we come
862 * up with a better solution.
867 intel_emit_post_sync_nonzero_flush(intel);
868 intel_emit_depth_stall_flushes(intel);
871 OUT_BATCH(_3DSTATE_DEPTH_BUFFER << 16 | (7 - 2));
872 uint32_t pitch_bytes =
873 params->depth.mt->region->pitch * params->depth.mt->region->cpp;
874 OUT_BATCH((pitch_bytes - 1) |
875 params->depth_format << 18 |
876 1 << 21 | /* separate stencil enable */
877 1 << 22 | /* hiz enable */
878 BRW_TILEWALK_YMAJOR << 26 |
879 1 << 27 | /* y-tiled */
880 BRW_SURFACE_2D << 29);
881 OUT_RELOC(params->depth.mt->region->bo,
882 I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
884 OUT_BATCH(BRW_SURFACE_MIPMAPLAYOUT_BELOW << 1 |
885 (width + tile_x - 1) << 6 |
886 (height + tile_y - 1) << 19);
894 /* 3DSTATE_HIER_DEPTH_BUFFER */
896 struct intel_region *hiz_region = params->depth.mt->hiz_mt->region;
897 uint32_t hiz_offset =
898 intel_region_get_aligned_offset(hiz_region,
899 draw_x & ~tile_mask_x,
900 (draw_y & ~tile_mask_y) / 2);
903 OUT_BATCH((_3DSTATE_HIER_DEPTH_BUFFER << 16) | (3 - 2));
904 OUT_BATCH(hiz_region->pitch * hiz_region->cpp - 1);
905 OUT_RELOC(hiz_region->bo,
906 I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
911 /* 3DSTATE_STENCIL_BUFFER */
914 OUT_BATCH((_3DSTATE_STENCIL_BUFFER << 16) | (3 - 2));
923 gen6_blorp_emit_depth_disable(struct brw_context *brw,
924 const brw_blorp_params *params)
926 struct intel_context *intel = &brw->intel;
929 OUT_BATCH(_3DSTATE_DEPTH_BUFFER << 16 | (7 - 2));
930 OUT_BATCH((BRW_DEPTHFORMAT_D32_FLOAT << 18) |
931 (BRW_SURFACE_NULL << 29));
941 /* 3DSTATE_CLEAR_PARAMS
943 * From the Sandybridge PRM, Volume 2, Part 1, Section 3DSTATE_CLEAR_PARAMS:
944 * [DevSNB] 3DSTATE_CLEAR_PARAMS packet must follow the DEPTH_BUFFER_STATE
945 * packet when HiZ is enabled and the DEPTH_BUFFER_STATE changes.
948 gen6_blorp_emit_clear_params(struct brw_context *brw,
949 const brw_blorp_params *params)
951 struct intel_context *intel = &brw->intel;
954 OUT_BATCH(_3DSTATE_CLEAR_PARAMS << 16 |
955 GEN5_DEPTH_CLEAR_VALID |
957 OUT_BATCH(params->depth.mt ? params->depth.mt->depth_clear_value : 0);
962 /* 3DSTATE_DRAWING_RECTANGLE */
964 gen6_blorp_emit_drawing_rectangle(struct brw_context *brw,
965 const brw_blorp_params *params)
967 struct intel_context *intel = &brw->intel;
970 OUT_BATCH(_3DSTATE_DRAWING_RECTANGLE << 16 | (4 - 2));
972 OUT_BATCH(((params->x1 - 1) & 0xffff) |
973 ((params->y1 - 1) << 16));
978 /* 3DSTATE_VIEWPORT_STATE_POINTERS */
980 gen6_blorp_emit_viewport_state(struct brw_context *brw,
981 const brw_blorp_params *params)
983 struct intel_context *intel = &brw->intel;
984 struct brw_cc_viewport *ccv;
985 uint32_t cc_vp_offset;
987 ccv = (struct brw_cc_viewport *)brw_state_batch(brw, AUB_TRACE_CC_VP_STATE,
991 ccv->min_depth = 0.0;
992 ccv->max_depth = 1.0;
995 OUT_BATCH(_3DSTATE_VIEWPORT_STATE_POINTERS << 16 | (4 - 2) |
996 GEN6_CC_VIEWPORT_MODIFY);
997 OUT_BATCH(0); /* clip VP */
998 OUT_BATCH(0); /* SF VP */
999 OUT_BATCH(cc_vp_offset);
1006 gen6_blorp_emit_primitive(struct brw_context *brw,
1007 const brw_blorp_params *params)
1009 struct intel_context *intel = &brw->intel;
1012 OUT_BATCH(CMD_3D_PRIM << 16 | (6 - 2) |
1013 _3DPRIM_RECTLIST << GEN4_3DPRIM_TOPOLOGY_TYPE_SHIFT |
1014 GEN4_3DPRIM_VERTEXBUFFER_ACCESS_SEQUENTIAL);
1015 OUT_BATCH(3); /* vertex count per instance */
1017 OUT_BATCH(1); /* instance count */
1025 * \brief Execute a blit or render pass operation.
1027 * To execute the operation, this function manually constructs and emits a
1028 * batch to draw a rectangle primitive. The batchbuffer is flushed before
1029 * constructing and after emitting the batch.
1031 * This function alters no GL state.
1034 gen6_blorp_exec(struct intel_context *intel,
1035 const brw_blorp_params *params)
1037 struct gl_context *ctx = &intel->ctx;
1038 struct brw_context *brw = brw_context(ctx);
1039 brw_blorp_prog_data *prog_data = NULL;
1040 uint32_t cc_blend_state_offset = 0;
1041 uint32_t cc_state_offset = 0;
1042 uint32_t depthstencil_offset;
1043 uint32_t wm_push_const_offset = 0;
1044 uint32_t wm_bind_bo_offset = 0;
1046 uint32_t prog_offset = params->get_wm_prog(brw, &prog_data);
1047 gen6_blorp_emit_batch_head(brw, params);
1048 gen6_emit_3dstate_multisample(brw, params->num_samples);
1049 gen6_emit_3dstate_sample_mask(brw, params->num_samples);
1050 gen6_blorp_emit_state_base_address(brw, params);
1051 gen6_blorp_emit_vertices(brw, params);
1052 gen6_blorp_emit_urb_config(brw, params);
1053 if (params->use_wm_prog) {
1054 cc_blend_state_offset = gen6_blorp_emit_blend_state(brw, params);
1055 cc_state_offset = gen6_blorp_emit_cc_state(brw, params);
1057 depthstencil_offset = gen6_blorp_emit_depth_stencil_state(brw, params);
1058 gen6_blorp_emit_cc_state_pointers(brw, params, cc_blend_state_offset,
1059 depthstencil_offset, cc_state_offset);
1060 if (params->use_wm_prog) {
1061 uint32_t wm_surf_offset_renderbuffer;
1062 uint32_t wm_surf_offset_texture;
1063 uint32_t sampler_offset;
1064 wm_push_const_offset = gen6_blorp_emit_wm_constants(brw, params);
1065 wm_surf_offset_renderbuffer =
1066 gen6_blorp_emit_surface_state(brw, params, ¶ms->dst,
1067 I915_GEM_DOMAIN_RENDER,
1068 I915_GEM_DOMAIN_RENDER);
1069 wm_surf_offset_texture =
1070 gen6_blorp_emit_surface_state(brw, params, ¶ms->src,
1071 I915_GEM_DOMAIN_SAMPLER, 0);
1073 gen6_blorp_emit_binding_table(brw, params,
1074 wm_surf_offset_renderbuffer,
1075 wm_surf_offset_texture);
1076 sampler_offset = gen6_blorp_emit_sampler_state(brw, params);
1077 gen6_blorp_emit_sampler_state_pointers(brw, params, sampler_offset);
1079 gen6_blorp_emit_vs_disable(brw, params);
1080 gen6_blorp_emit_gs_disable(brw, params);
1081 gen6_blorp_emit_clip_disable(brw, params);
1082 gen6_blorp_emit_sf_config(brw, params);
1083 if (params->use_wm_prog)
1084 gen6_blorp_emit_constant_ps(brw, params, wm_push_const_offset);
1085 gen6_blorp_emit_wm_config(brw, params, prog_offset, prog_data);
1086 if (params->use_wm_prog)
1087 gen6_blorp_emit_binding_table_pointers(brw, params, wm_bind_bo_offset);
1088 gen6_blorp_emit_viewport_state(brw, params);
1090 if (params->depth.mt)
1091 gen6_blorp_emit_depth_stencil_config(brw, params);
1093 gen6_blorp_emit_depth_disable(brw, params);
1094 gen6_blorp_emit_clear_params(brw, params);
1095 gen6_blorp_emit_drawing_rectangle(brw, params);
1096 gen6_blorp_emit_primitive(brw, params);
1098 /* See comments above at first invocation of intel_flush() in
1099 * gen6_blorp_emit_batch_head().
1104 brw->state.dirty.brw = ~0;
1105 brw->state.dirty.cache = ~0;