1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
|
/*
* Mesa 3-D graphics library
*
* Copyright (C) 2012-2013 LunarG, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Authors:
* Chia-I Wu <olv@lunarg.com>
*/
#include "util/u_blitter.h"
#include "util/u_clear.h"
#include "util/u_pack_color.h"
#include "util/u_surface.h"
#include "intel_reg.h"
#include "ilo_context.h"
#include "ilo_cp.h"
#include "ilo_resource.h"
#include "ilo_screen.h"
#include "ilo_blit.h"
/*
* From the Sandy Bridge PRM, volume 1 part 5, page 7:
*
* "The BLT engine is capable of transferring very large quantities of
* graphics data. Any graphics data read from and written to the
* destination is permitted to represent a number of pixels that occupies
* up to 65,536 scan lines and up to 32,768 bytes per scan line at the
* destination. The maximum number of pixels that may be represented per
* scan line's worth of graphics data depends on the color depth."
*/
static const int gen6_max_bytes_per_scanline = 32768;
static const int gen6_max_scanlines = 65536;
static void
ilo_blit_own_blt_ring(struct ilo_context *ilo)
{
ilo_cp_set_ring(ilo->cp, ILO_CP_RING_BLT);
ilo_cp_set_owner(ilo->cp, NULL, 0);
}
static void
gen6_XY_COLOR_BLT(struct ilo_context *ilo, struct intel_bo *dst_bo,
uint32_t dst_offset, int16_t dst_pitch,
enum intel_tiling_mode dst_tiling,
int16_t x1, int16_t y1, int16_t x2, int16_t y2,
uint32_t color,
uint8_t rop, int cpp, bool write_alpha)
{
const uint8_t cmd_len = 6;
struct ilo_cp *cp = ilo->cp;
int dst_align, dst_pitch_shift;
uint32_t dw0, dw1;
dw0 = XY_COLOR_BLT_CMD | (cmd_len - 2);
if (dst_tiling == INTEL_TILING_NONE) {
dst_align = 4;
dst_pitch_shift = 0;
}
else {
dw0 |= XY_DST_TILED;
dst_align = (dst_tiling == INTEL_TILING_Y) ? 128 : 512;
/* in dwords when tiled */
dst_pitch_shift = 2;
}
assert(cpp == 4 || cpp == 2 || cpp == 1);
assert((x2 - x1) * cpp < gen6_max_bytes_per_scanline);
assert(y2 - y1 < gen6_max_scanlines);
assert(dst_offset % dst_align == 0 && dst_pitch % dst_align == 0);
dw1 = rop << 16 |
dst_pitch >> dst_pitch_shift;
switch (cpp) {
case 4:
dw0 |= XY_BLT_WRITE_RGB;
if (write_alpha)
dw0 |= XY_BLT_WRITE_ALPHA;
dw1 |= BR13_8888;
break;
case 2:
dw1 |= BR13_565;
break;
case 1:
dw1 |= BR13_8;
break;
}
ilo_cp_begin(cp, cmd_len);
ilo_cp_write(cp, dw0);
ilo_cp_write(cp, dw1);
ilo_cp_write(cp, y1 << 16 | x1);
ilo_cp_write(cp, y2 << 16 | x2);
ilo_cp_write_bo(cp, dst_offset, dst_bo,
INTEL_DOMAIN_RENDER, INTEL_DOMAIN_RENDER);
ilo_cp_write(cp, color);
ilo_cp_end(cp);
}
static void
gen6_SRC_COPY_BLT(struct ilo_context *ilo, struct intel_bo *dst_bo,
uint32_t dst_offset, int16_t dst_pitch,
uint16_t width, uint16_t height,
struct intel_bo *src_bo,
uint32_t src_offset, int16_t src_pitch,
uint8_t rop, int cpp, bool write_alpha, bool dir_rtl)
{
const uint8_t cmd_len = 6;
struct ilo_cp *cp = ilo->cp;
uint32_t dw0, dw1;
assert(cpp == 4 || cpp == 2 || cpp == 1);
assert(width < gen6_max_bytes_per_scanline);
assert(height < gen6_max_scanlines);
/* offsets are naturally aligned and pitches are dword-aligned */
assert(dst_offset % cpp == 0 && dst_pitch % 4 == 0);
assert(src_offset % cpp == 0 && src_pitch % 4 == 0);
#ifndef SRC_COPY_BLT_CMD
#define SRC_COPY_BLT_CMD (CMD_2D | (0x43 << 22))
#endif
dw0 = SRC_COPY_BLT_CMD | (cmd_len - 2);
dw1 = rop << 16 | dst_pitch;
if (dir_rtl)
dw1 |= 1 << 30;
switch (cpp) {
case 4:
dw0 |= XY_BLT_WRITE_RGB;
if (write_alpha)
dw0 |= XY_BLT_WRITE_ALPHA;
dw1 |= BR13_8888;
break;
case 2:
dw1 |= BR13_565;
break;
case 1:
dw1 |= BR13_8;
break;
}
ilo_cp_begin(cp, cmd_len);
ilo_cp_write(cp, dw0);
ilo_cp_write(cp, dw1);
ilo_cp_write(cp, height << 16 | width);
ilo_cp_write_bo(cp, dst_offset, dst_bo, INTEL_DOMAIN_RENDER,
INTEL_DOMAIN_RENDER);
ilo_cp_write(cp, src_pitch);
ilo_cp_write_bo(cp, src_offset, src_bo, INTEL_DOMAIN_RENDER, 0);
ilo_cp_end(cp);
}
static bool
buf_copy_region(struct ilo_context *ilo,
struct ilo_buffer *dst, unsigned dst_offset,
struct ilo_buffer *src, unsigned src_offset,
unsigned size)
{
const uint8_t rop = 0xcc; /* SRCCOPY */
unsigned offset = 0;
struct intel_bo *aper_check[3];
ilo_blit_own_blt_ring(ilo);
/* make room if necessary */
aper_check[0] = ilo->cp->bo;
aper_check[1] = dst->bo;
aper_check[2] = src->bo;
if (ilo->winsys->check_aperture_space(ilo->winsys, aper_check, 3))
ilo_cp_flush(ilo->cp);
while (size) {
unsigned width, height;
int16_t pitch;
width = size;
height = 1;
pitch = 0;
if (width > gen6_max_bytes_per_scanline) {
/* less than INT16_MAX and dword-aligned */
pitch = 32764;
width = pitch;
height = size / width;
if (height > gen6_max_scanlines)
height = gen6_max_scanlines;
}
gen6_SRC_COPY_BLT(ilo,
dst->bo, dst_offset + offset, pitch,
width, height,
src->bo, src_offset + offset, pitch,
rop, 1, true, false);
offset += pitch * height;
size -= width * height;
}
return true;
}
static void
ilo_resource_copy_region(struct pipe_context *pipe,
struct pipe_resource *dst,
unsigned dst_level,
unsigned dstx, unsigned dsty, unsigned dstz,
struct pipe_resource *src,
unsigned src_level,
const struct pipe_box *src_box)
{
bool success;
if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
const unsigned dst_offset = dstx;
const unsigned src_offset = src_box->x;
const unsigned size = src_box->width;
assert(dst_level == 0 && dsty == 0 && dstz == 0);
assert(src_level == 0 &&
src_box->y == 0 &&
src_box->z == 0 &&
src_box->height == 1 &&
src_box->depth == 1);
success = buf_copy_region(ilo_context(pipe),
ilo_buffer(dst), dst_offset, ilo_buffer(src), src_offset, size);
}
else {
success = false;
}
if (!success) {
util_resource_copy_region(pipe, dst, dst_level,
dstx, dsty, dstz, src, src_level, src_box);
}
}
static bool
blitter_xy_color_blt(struct pipe_context *pipe,
struct pipe_resource *res,
int16_t x1, int16_t y1,
int16_t x2, int16_t y2,
uint32_t color)
{
struct ilo_context *ilo = ilo_context(pipe);
struct ilo_texture *tex = ilo_texture(res);
const int cpp = util_format_get_blocksize(tex->bo_format);
const uint8_t rop = 0xf0; /* PATCOPY */
struct intel_bo *aper_check[2];
/* how to support Y-tiling? */
if (tex->tiling == INTEL_TILING_Y)
return false;
/* nothing to clear */
if (x1 >= x2 || y1 >= y2)
return true;
ilo_blit_own_blt_ring(ilo);
/* make room if necessary */
aper_check[0] = ilo->cp->bo;
aper_check[1] = tex->bo;
if (ilo->winsys->check_aperture_space(ilo->winsys, aper_check, 2))
ilo_cp_flush(ilo->cp);
gen6_XY_COLOR_BLT(ilo,
tex->bo, 0, tex->bo_stride, tex->tiling,
x1, y1, x2, y2, color, rop, cpp, true);
return true;
}
enum ilo_blitter_op {
ILO_BLITTER_CLEAR,
ILO_BLITTER_CLEAR_SURFACE,
ILO_BLITTER_BLIT,
};
static void
ilo_blitter_begin(struct ilo_context *ilo, enum ilo_blitter_op op)
{
/* as documented in util/u_blitter.h */
util_blitter_save_vertex_buffer_slot(ilo->blitter,
ilo->vertex_buffers.buffers);
util_blitter_save_vertex_elements(ilo->blitter, ilo->vertex_elements);
util_blitter_save_vertex_shader(ilo->blitter, ilo->vs);
util_blitter_save_geometry_shader(ilo->blitter, ilo->gs);
util_blitter_save_so_targets(ilo->blitter,
ilo->stream_output_targets.num_targets,
ilo->stream_output_targets.targets);
util_blitter_save_fragment_shader(ilo->blitter, ilo->fs);
util_blitter_save_depth_stencil_alpha(ilo->blitter,
ilo->depth_stencil_alpha);
util_blitter_save_blend(ilo->blitter, ilo->blend);
/* undocumented? */
util_blitter_save_viewport(ilo->blitter, &ilo->viewport);
util_blitter_save_stencil_ref(ilo->blitter, &ilo->stencil_ref);
util_blitter_save_sample_mask(ilo->blitter, ilo->sample_mask);
switch (op) {
case ILO_BLITTER_CLEAR:
util_blitter_save_rasterizer(ilo->blitter, ilo->rasterizer);
break;
case ILO_BLITTER_CLEAR_SURFACE:
util_blitter_save_framebuffer(ilo->blitter, &ilo->framebuffer);
break;
case ILO_BLITTER_BLIT:
util_blitter_save_rasterizer(ilo->blitter, ilo->rasterizer);
util_blitter_save_framebuffer(ilo->blitter, &ilo->framebuffer);
util_blitter_save_fragment_sampler_states(ilo->blitter,
ilo->samplers[PIPE_SHADER_FRAGMENT].num_samplers,
(void **) ilo->samplers[PIPE_SHADER_FRAGMENT].samplers);
util_blitter_save_fragment_sampler_views(ilo->blitter,
ilo->sampler_views[PIPE_SHADER_FRAGMENT].num_views,
ilo->sampler_views[PIPE_SHADER_FRAGMENT].views);
/* disable render condition? */
break;
default:
break;
}
}
static void
ilo_blitter_end(struct ilo_context *ilo)
{
}
static void
ilo_clear(struct pipe_context *pipe,
unsigned buffers,
const union pipe_color_union *color,
double depth,
unsigned stencil)
{
struct ilo_context *ilo = ilo_context(pipe);
/* TODO we should pause/resume some queries */
ilo_blitter_begin(ilo, ILO_BLITTER_CLEAR);
util_blitter_clear(ilo->blitter,
ilo->framebuffer.width, ilo->framebuffer.height,
ilo->framebuffer.nr_cbufs, buffers,
(ilo->framebuffer.nr_cbufs) ? ilo->framebuffer.cbufs[0]->format :
PIPE_FORMAT_NONE,
color, depth, stencil);
ilo_blitter_end(ilo);
}
static void
ilo_clear_render_target(struct pipe_context *pipe,
struct pipe_surface *dst,
const union pipe_color_union *color,
unsigned dstx, unsigned dsty,
unsigned width, unsigned height)
{
struct ilo_context *ilo = ilo_context(pipe);
union util_color packed;
if (!width || !height || dstx >= dst->width || dsty >= dst->height)
return;
if (dstx + width > dst->width)
width = dst->width - dstx;
if (dsty + height > dst->height)
height = dst->height - dsty;
util_pack_color(color->f, dst->format, &packed);
/* try HW blit first */
if (blitter_xy_color_blt(pipe, dst->texture,
dstx, dsty,
dstx + width, dsty + height,
packed.ui))
return;
ilo_blitter_begin(ilo, ILO_BLITTER_CLEAR_SURFACE);
util_blitter_clear_render_target(ilo->blitter,
dst, color, dstx, dsty, width, height);
ilo_blitter_end(ilo);
}
static void
ilo_clear_depth_stencil(struct pipe_context *pipe,
struct pipe_surface *dst,
unsigned clear_flags,
double depth,
unsigned stencil,
unsigned dstx, unsigned dsty,
unsigned width, unsigned height)
{
struct ilo_context *ilo = ilo_context(pipe);
/*
* The PRM claims that HW blit supports Y-tiling since GEN6, but it does
* not tell us how to program it. Since depth buffers are always Y-tiled,
* HW blit will not work.
*/
ilo_blitter_begin(ilo, ILO_BLITTER_CLEAR_SURFACE);
util_blitter_clear_depth_stencil(ilo->blitter,
dst, clear_flags, depth, stencil, dstx, dsty, width, height);
ilo_blitter_end(ilo);
}
static void
ilo_blit(struct pipe_context *pipe, const struct pipe_blit_info *info)
{
struct ilo_context *ilo = ilo_context(pipe);
struct pipe_blit_info skip_stencil;
if (util_try_blit_via_copy_region(pipe, info))
return;
if (!util_blitter_is_blit_supported(ilo->blitter, info)) {
/* try without stencil */
if (info->mask & PIPE_MASK_S) {
skip_stencil = *info;
skip_stencil.mask = info->mask & ~PIPE_MASK_S;
if (util_blitter_is_blit_supported(ilo->blitter, &skip_stencil))
info = &skip_stencil;
}
if (info == &skip_stencil) {
ilo_warn("ignore stencil buffer blitting\n");
}
else {
ilo_warn("failed to blit with the generic blitter\n");
return;
}
}
ilo_blitter_begin(ilo, ILO_BLITTER_BLIT);
util_blitter_blit(ilo->blitter, info);
ilo_blitter_end(ilo);
}
/**
* Initialize blit-related functions.
*/
void
ilo_init_blit_functions(struct ilo_context *ilo)
{
ilo->base.resource_copy_region = ilo_resource_copy_region;
ilo->base.blit = ilo_blit;
ilo->base.clear = ilo_clear;
ilo->base.clear_render_target = ilo_clear_render_target;
ilo->base.clear_depth_stencil = ilo_clear_depth_stencil;
}
|