2 * Copyright © 2017 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 shall be included
12 * in all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
20 * DEALINGS IN THE SOFTWARE.
24 #include "pipe/p_defines.h"
25 #include "pipe/p_state.h"
26 #include "pipe/p_context.h"
27 #include "pipe/p_screen.h"
28 #include "util/u_format.h"
29 #include "util/u_inlines.h"
30 #include "util/ralloc.h"
31 #include "intel/blorp/blorp.h"
32 #include "iris_context.h"
33 #include "iris_resource.h"
34 #include "iris_screen.h"
37 * Helper function for handling mirror image blits.
39 * If coord0 > coord1, swap them and return "true" (mirrored).
42 apply_mirror(float *coord0
, float *coord1
)
44 if (*coord0
> *coord1
) {
54 * Compute the number of pixels to clip for each side of a rect
56 * \param x0 The rect's left coordinate
57 * \param y0 The rect's bottom coordinate
58 * \param x1 The rect's right coordinate
59 * \param y1 The rect's top coordinate
60 * \param min_x The clipping region's left coordinate
61 * \param min_y The clipping region's bottom coordinate
62 * \param max_x The clipping region's right coordinate
63 * \param max_y The clipping region's top coordinate
64 * \param clipped_x0 The number of pixels to clip from the left side
65 * \param clipped_y0 The number of pixels to clip from the bottom side
66 * \param clipped_x1 The number of pixels to clip from the right side
67 * \param clipped_y1 The number of pixels to clip from the top side
69 * \return false if we clip everything away, true otherwise
72 compute_pixels_clipped(float x0
, float y0
, float x1
, float y1
,
73 float min_x
, float min_y
, float max_x
, float max_y
,
74 float *clipped_x0
, float *clipped_y0
,
75 float *clipped_x1
, float *clipped_y1
)
77 /* If we are going to clip everything away, stop. */
78 if (!(min_x
<= max_x
&&
90 *clipped_x0
= min_x
- x0
;
94 *clipped_x1
= x1
- max_x
;
99 *clipped_y0
= min_y
- y0
;
103 *clipped_y1
= y1
- max_y
;
111 * Clips a coordinate (left, right, top or bottom) for the src or dst rect
112 * (whichever requires the largest clip) and adjusts the coordinate
113 * for the other rect accordingly.
115 * \param mirror true if mirroring is required
116 * \param src the source rect coordinate (for example src_x0)
117 * \param dst0 the dst rect coordinate (for example dst_x0)
118 * \param dst1 the opposite dst rect coordinate (for example dst_x1)
119 * \param clipped_dst0 number of pixels to clip from the dst coordinate
120 * \param clipped_dst1 number of pixels to clip from the opposite dst coordinate
121 * \param scale the src vs dst scale involved for that coordinate
122 * \param is_left_or_bottom true if we are clipping the left or bottom sides
126 clip_coordinates(bool mirror
,
127 float *src
, float *dst0
, float *dst1
,
131 bool is_left_or_bottom
)
133 /* When clipping we need to add or subtract pixels from the original
134 * coordinates depending on whether we are acting on the left/bottom
135 * or right/top sides of the rect respectively. We assume we have to
136 * add them in the code below, and multiply by -1 when we should
139 int mult
= is_left_or_bottom
? 1 : -1;
142 *dst0
+= clipped_dst0
* mult
;
143 *src
+= clipped_dst0
* scale
* mult
;
145 *dst1
-= clipped_dst1
* mult
;
146 *src
+= clipped_dst1
* scale
* mult
;
151 * Apply a scissor rectangle to blit coordinates.
153 * Returns true if the blit was entirely scissored away.
156 apply_blit_scissor(const struct pipe_scissor_state
*scissor
,
157 float *src_x0
, float *src_y0
,
158 float *src_x1
, float *src_y1
,
159 float *dst_x0
, float *dst_y0
,
160 float *dst_x1
, float *dst_y1
,
161 bool mirror_x
, bool mirror_y
)
163 float clip_dst_x0
, clip_dst_x1
, clip_dst_y0
, clip_dst_y1
;
165 /* Compute number of pixels to scissor away. */
166 if (!compute_pixels_clipped(*dst_x0
, *dst_y0
, *dst_x1
, *dst_y1
,
167 scissor
->minx
, scissor
->miny
,
168 scissor
->maxx
, scissor
->maxy
,
169 &clip_dst_x0
, &clip_dst_y0
,
170 &clip_dst_x1
, &clip_dst_y1
))
173 // XXX: comments assume source clipping, which we don't do
175 /* When clipping any of the two rects we need to adjust the coordinates
176 * in the other rect considering the scaling factor involved. To obtain
177 * the best precision we want to make sure that we only clip once per
178 * side to avoid accumulating errors due to the scaling adjustment.
180 * For example, if src_x0 and dst_x0 need both to be clipped we want to
181 * avoid the situation where we clip src_x0 first, then adjust dst_x0
182 * accordingly but then we realize that the resulting dst_x0 still needs
183 * to be clipped, so we clip dst_x0 and adjust src_x0 again. Because we are
184 * applying scaling factors to adjust the coordinates in each clipping
185 * pass we lose some precision and that can affect the results of the
186 * blorp blit operation slightly. What we want to do here is detect the
187 * rect that we should clip first for each side so that when we adjust
188 * the other rect we ensure the resulting coordinate does not need to be
191 * The code below implements this by comparing the number of pixels that
192 * we need to clip for each side of both rects considering the scales
193 * involved. For example, clip_src_x0 represents the number of pixels
194 * to be clipped for the src rect's left side, so if clip_src_x0 = 5,
195 * clip_dst_x0 = 4 and scale_x = 2 it means that we are clipping more
196 * from the dst rect so we should clip dst_x0 only and adjust src_x0.
197 * This is because clipping 4 pixels in the dst is equivalent to
198 * clipping 4 * 2 = 8 > 5 in the src.
201 float scale_x
= (float) (*src_x1
- *src_x0
) / (*dst_x1
- *dst_x0
);
202 float scale_y
= (float) (*src_y1
- *src_y0
) / (*dst_y1
- *dst_y0
);
205 clip_coordinates(mirror_x
, src_x0
, dst_x0
, dst_x1
,
206 clip_dst_x0
, clip_dst_x1
, scale_x
, true);
208 /* Clip right side */
209 clip_coordinates(mirror_x
, src_x1
, dst_x1
, dst_x0
,
210 clip_dst_x1
, clip_dst_x0
, scale_x
, false);
212 /* Clip bottom side */
213 clip_coordinates(mirror_y
, src_y0
, dst_y0
, dst_y1
,
214 clip_dst_y0
, clip_dst_y1
, scale_y
, true);
217 clip_coordinates(mirror_y
, src_y1
, dst_y1
, dst_y0
,
218 clip_dst_y1
, clip_dst_y0
, scale_y
, false);
224 iris_blorp_surf_for_resource(struct blorp_surf
*surf
,
225 struct pipe_resource
*p_res
,
226 enum isl_aux_usage aux_usage
,
227 bool is_render_target
)
229 struct iris_resource
*res
= (void *) p_res
;
231 *surf
= (struct blorp_surf
) {
233 .addr
= (struct blorp_address
) {
235 .offset
= 0, // XXX: ???
236 .reloc_flags
= is_render_target
? EXEC_OBJECT_WRITE
: 0,
237 .mocs
= I915_MOCS_CACHED
, // XXX: BDW MOCS, PTE MOCS
239 .aux_usage
= aux_usage
,
242 assert(surf
->aux_usage
== ISL_AUX_USAGE_NONE
);
246 * The pipe->blit() driver hook.
248 * This performs a blit between two surfaces, which copies data but may
249 * also perform format conversion, scaling, flipping, and so on.
252 iris_blit(struct pipe_context
*ctx
, const struct pipe_blit_info
*info
)
254 struct iris_context
*ice
= (void *) ctx
;
255 struct iris_screen
*screen
= (struct iris_screen
*)ctx
->screen
;
256 const struct gen_device_info
*devinfo
= &screen
->devinfo
;
257 enum blorp_batch_flags blorp_flags
= 0;
259 if (info
->render_condition_enable
) {
260 if (ice
->state
.predicate
== IRIS_PREDICATE_STATE_DONT_RENDER
)
263 if (ice
->state
.predicate
== IRIS_PREDICATE_STATE_USE_BIT
)
264 blorp_flags
|= BLORP_BATCH_PREDICATE_ENABLE
;
267 struct blorp_surf src_surf
, dst_surf
;
268 iris_blorp_surf_for_resource(&src_surf
, info
->src
.resource
,
269 ISL_AUX_USAGE_NONE
, false);
270 iris_blorp_surf_for_resource(&dst_surf
, info
->dst
.resource
,
271 ISL_AUX_USAGE_NONE
, true);
273 struct iris_format_info src_fmt
=
274 iris_format_for_usage(devinfo
, info
->src
.format
,
275 ISL_SURF_USAGE_TEXTURE_BIT
);
276 struct iris_format_info dst_fmt
=
277 iris_format_for_usage(devinfo
, info
->dst
.format
,
278 ISL_SURF_USAGE_RENDER_TARGET_BIT
);
280 float src_x0
= info
->src
.box
.x
;
281 float src_x1
= info
->src
.box
.x
+ info
->src
.box
.width
;
282 float src_y0
= info
->src
.box
.y
;
283 float src_y1
= info
->src
.box
.y
+ info
->src
.box
.height
;
284 float dst_x0
= info
->dst
.box
.x
;
285 float dst_x1
= info
->dst
.box
.x
+ info
->dst
.box
.width
;
286 float dst_y0
= info
->dst
.box
.y
;
287 float dst_y1
= info
->dst
.box
.y
+ info
->dst
.box
.height
;
288 bool mirror_x
= apply_mirror(&src_x0
, &src_x1
);
289 bool mirror_y
= apply_mirror(&src_y0
, &src_y1
);
290 enum blorp_filter filter
;
292 if (info
->scissor_enable
) {
293 bool noop
= apply_blit_scissor(&info
->scissor
,
294 &src_x0
, &src_y0
, &src_x1
, &src_y1
,
295 &dst_x0
, &dst_y0
, &dst_x1
, &dst_y1
,
301 if (abs(info
->dst
.box
.width
) == abs(info
->src
.box
.width
) &&
302 abs(info
->dst
.box
.height
) == abs(info
->src
.box
.height
)) {
303 if (src_surf
.surf
->samples
> 1 && dst_surf
.surf
->samples
<= 1) {
304 /* The OpenGL ES 3.2 specification, section 16.2.1, says:
306 * "If the read framebuffer is multisampled (its effective
307 * value of SAMPLE_BUFFERS is one) and the draw framebuffer
308 * is not (its value of SAMPLE_BUFFERS is zero), the samples
309 * corresponding to each pixel location in the source are
310 * converted to a single sample before being written to the
311 * destination. The filter parameter is ignored. If the
312 * source formats are integer types or stencil values, a
313 * single sample’s value is selected for each pixel. If the
314 * source formats are floating-point or normalized types,
315 * the sample values for each pixel are resolved in an
316 * implementation-dependent manner. If the source formats
317 * are depth values, sample values are resolved in an
318 * implementation-dependent manner where the result will be
319 * between the minimum and maximum depth values in the pixel."
321 * When selecting a single sample, we always choose sample 0.
323 if (util_format_is_depth_or_stencil(info
->src
.format
) ||
324 util_format_is_pure_integer(info
->src
.format
)) {
325 filter
= BLORP_FILTER_SAMPLE_0
;
327 filter
= BLORP_FILTER_AVERAGE
;
330 /* The OpenGL 4.6 specification, section 18.3.1, says:
332 * "If the source and destination dimensions are identical,
333 * no filtering is applied."
335 * Using BLORP_FILTER_NONE will also handle the upsample case by
336 * replicating the one value in the source to all values in the
339 filter
= BLORP_FILTER_NONE
;
341 } else if (info
->filter
== PIPE_TEX_FILTER_LINEAR
) {
342 filter
= BLORP_FILTER_BILINEAR
;
344 filter
= BLORP_FILTER_NEAREST
;
347 struct iris_batch
*batch
= &ice
->batches
[IRIS_BATCH_RENDER
];
349 struct blorp_batch blorp_batch
;
350 blorp_batch_init(&ice
->blorp
, &blorp_batch
, batch
, blorp_flags
);
352 for (int slice
= 0; slice
< info
->dst
.box
.depth
; slice
++) {
353 iris_batch_maybe_flush(batch
, 1500);
355 blorp_blit(&blorp_batch
,
356 &src_surf
, info
->src
.level
, info
->src
.box
.z
+ slice
,
357 src_fmt
.fmt
, src_fmt
.swizzle
,
358 &dst_surf
, info
->dst
.level
, info
->dst
.box
.z
+ slice
,
359 dst_fmt
.fmt
, ISL_SWIZZLE_IDENTITY
,
360 src_x0
, src_y0
, src_x1
, src_y1
,
361 dst_x0
, dst_y0
, dst_x1
, dst_y1
,
362 filter
, mirror_x
, mirror_y
);
365 if (util_format_is_depth_and_stencil(info
->dst
.format
) &&
366 util_format_has_stencil(util_format_description(info
->src
.format
))) {
367 struct iris_resource
*src_res
, *dst_res
, *junk
;
368 iris_get_depth_stencil_resources(info
->src
.resource
, &junk
, &src_res
);
369 iris_get_depth_stencil_resources(info
->dst
.resource
, &junk
, &dst_res
);
370 iris_blorp_surf_for_resource(&src_surf
, &src_res
->base
,
371 ISL_AUX_USAGE_NONE
, false);
372 iris_blorp_surf_for_resource(&dst_surf
, &dst_res
->base
,
373 ISL_AUX_USAGE_NONE
, true);
375 for (int slice
= 0; slice
< info
->dst
.box
.depth
; slice
++) {
376 iris_batch_maybe_flush(batch
, 1500);
378 blorp_blit(&blorp_batch
,
379 &src_surf
, info
->src
.level
, info
->src
.box
.z
+ slice
,
380 ISL_FORMAT_R8_UINT
, ISL_SWIZZLE_IDENTITY
,
381 &dst_surf
, info
->dst
.level
, info
->dst
.box
.z
+ slice
,
382 ISL_FORMAT_R8_UINT
, ISL_SWIZZLE_IDENTITY
,
383 src_x0
, src_y0
, src_x1
, src_y1
,
384 dst_x0
, dst_y0
, dst_x1
, dst_y1
,
385 filter
, mirror_x
, mirror_y
);
389 blorp_batch_finish(&blorp_batch
);
391 iris_flush_and_dirty_for_history(ice
, batch
, (struct iris_resource
*)
396 * The pipe->resource_copy_region() driver hook.
398 * This implements ARB_copy_image semantics - a raw memory copy between
399 * compatible view classes.
402 iris_resource_copy_region(struct pipe_context
*ctx
,
403 struct pipe_resource
*dst
,
405 unsigned dstx
, unsigned dsty
, unsigned dstz
,
406 struct pipe_resource
*src
,
408 const struct pipe_box
*src_box
)
410 struct blorp_batch blorp_batch
;
411 struct iris_context
*ice
= (void *) ctx
;
412 struct iris_batch
*batch
= &ice
->batches
[IRIS_BATCH_RENDER
];
414 blorp_batch_init(&ice
->blorp
, &blorp_batch
, batch
, 0);
416 if (dst
->target
== PIPE_BUFFER
&& src
->target
== PIPE_BUFFER
) {
417 struct blorp_address src_addr
= {
418 .buffer
= iris_resource_bo(src
), .offset
= src_box
->x
,
420 struct blorp_address dst_addr
= {
421 .buffer
= iris_resource_bo(dst
), .offset
= dstx
,
424 iris_batch_maybe_flush(batch
, 1500);
426 blorp_buffer_copy(&blorp_batch
, src_addr
, dst_addr
, src_box
->width
);
428 // XXX: what about one surface being a buffer and not the other?
430 struct blorp_surf src_surf
, dst_surf
;
431 iris_blorp_surf_for_resource(&src_surf
, src
, ISL_AUX_USAGE_NONE
, false);
432 iris_blorp_surf_for_resource(&dst_surf
, dst
, ISL_AUX_USAGE_NONE
, true);
434 for (int slice
= 0; slice
< src_box
->depth
; slice
++) {
435 iris_batch_maybe_flush(batch
, 1500);
437 blorp_copy(&blorp_batch
, &src_surf
, src_level
, src_box
->z
+ slice
,
438 &dst_surf
, dst_level
, dstz
+ slice
,
439 src_box
->x
, src_box
->y
, dstx
, dsty
,
440 src_box
->width
, src_box
->height
);
444 blorp_batch_finish(&blorp_batch
);
446 iris_flush_and_dirty_for_history(ice
, batch
, (struct iris_resource
*) dst
);
450 iris_init_blit_functions(struct pipe_context
*ctx
)
452 ctx
->blit
= iris_blit
;
453 ctx
->resource_copy_region
= iris_resource_copy_region
;