1 /*
2 * Copyright 2009 Marek Olšák <maraeo@gmail.com>
3 *
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 * on the rights to use, copy, modify, merge, publish, distribute, sub
8 * license, and/or sell copies of the Software, and to permit persons to whom
9 * the Software is furnished to do so, subject to the following conditions:
10 *
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
13 * Software.
14 *
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 NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE. */
22
23 #include "r300_context.h"
24 #include "r300_emit.h"
25 #include "r300_texture.h"
26 #include "r300_reg.h"
27
28 #include "util/format/u_format.h"
29 #include "util/half_float.h"
30 #include "util/u_pack_color.h"
31 #include "util/u_surface.h"
32
33 enum r300_blitter_op /* bitmask */
34 {
35 R300_STOP_QUERY = 1,
36 R300_SAVE_TEXTURES = 2,
37 R300_SAVE_FRAMEBUFFER = 4,
38 R300_IGNORE_RENDER_COND = 8,
39
40 R300_CLEAR = R300_STOP_QUERY,
41
42 R300_CLEAR_SURFACE = R300_STOP_QUERY | R300_SAVE_FRAMEBUFFER,
43
44 R300_COPY = R300_STOP_QUERY | R300_SAVE_FRAMEBUFFER |
45 R300_SAVE_TEXTURES | R300_IGNORE_RENDER_COND,
46
47 R300_BLIT = R300_STOP_QUERY | R300_SAVE_FRAMEBUFFER |
48 R300_SAVE_TEXTURES,
49
50 R300_DECOMPRESS = R300_STOP_QUERY | R300_IGNORE_RENDER_COND,
51 };
52
r300_blitter_begin(struct r300_context * r300,enum r300_blitter_op op)53 static void r300_blitter_begin(struct r300_context* r300, enum r300_blitter_op op)
54 {
55 if ((op & R300_STOP_QUERY) && r300->query_current) {
56 r300->blitter_saved_query = r300->query_current;
57 r300_stop_query(r300);
58 }
59
60 /* Yeah we have to save all those states to ensure the blitter operation
61 * is really transparent. The states will be restored by the blitter once
62 * copying is done. */
63 util_blitter_save_blend(r300->blitter, r300->blend_state.state);
64 util_blitter_save_depth_stencil_alpha(r300->blitter, r300->dsa_state.state);
65 util_blitter_save_stencil_ref(r300->blitter, &(r300->stencil_ref));
66 util_blitter_save_rasterizer(r300->blitter, r300->rs_state.state);
67 util_blitter_save_fragment_shader(r300->blitter, r300->fs.state);
68 util_blitter_save_vertex_shader(r300->blitter, r300->vs_state.state);
69 util_blitter_save_viewport(r300->blitter, &r300->viewport);
70 util_blitter_save_scissor(r300->blitter, r300->scissor_state.state);
71 util_blitter_save_sample_mask(r300->blitter, *(unsigned*)r300->sample_mask.state, 0);
72 util_blitter_save_vertex_buffer_slot(r300->blitter, r300->vertex_buffer);
73 util_blitter_save_vertex_elements(r300->blitter, r300->velems);
74
75 struct pipe_constant_buffer cb = {
76 /* r300 doesn't use the size for FS at all. The shader determines it.
77 * Set something for blitter.
78 */
79 .buffer_size = 4,
80 .user_buffer = ((struct r300_constant_buffer*)r300->fs_constants.state)->ptr,
81 };
82 util_blitter_save_fragment_constant_buffer_slot(r300->blitter, &cb);
83
84 if (op & R300_SAVE_FRAMEBUFFER) {
85 util_blitter_save_framebuffer(r300->blitter, r300->fb_state.state);
86 }
87
88 if (op & R300_SAVE_TEXTURES) {
89 struct r300_textures_state* state =
90 (struct r300_textures_state*)r300->textures_state.state;
91
92 util_blitter_save_fragment_sampler_states(
93 r300->blitter, state->sampler_state_count,
94 (void**)state->sampler_states);
95
96 util_blitter_save_fragment_sampler_views(
97 r300->blitter, state->sampler_view_count,
98 (struct pipe_sampler_view**)state->sampler_views);
99 }
100
101 if (op & R300_IGNORE_RENDER_COND) {
102 /* Save the flag. */
103 r300->blitter_saved_skip_rendering = r300->skip_rendering+1;
104 r300->skip_rendering = FALSE;
105 } else {
106 r300->blitter_saved_skip_rendering = 0;
107 }
108 }
109
r300_blitter_end(struct r300_context * r300)110 static void r300_blitter_end(struct r300_context *r300)
111 {
112 if (r300->blitter_saved_query) {
113 r300_resume_query(r300, r300->blitter_saved_query);
114 r300->blitter_saved_query = NULL;
115 }
116
117 if (r300->blitter_saved_skip_rendering) {
118 /* Restore the flag. */
119 r300->skip_rendering = r300->blitter_saved_skip_rendering-1;
120 }
121 }
122
r300_depth_clear_cb_value(enum pipe_format format,const float * rgba)123 static uint32_t r300_depth_clear_cb_value(enum pipe_format format,
124 const float* rgba)
125 {
126 union util_color uc;
127 util_pack_color(rgba, format, &uc);
128
129 if (util_format_get_blocksizebits(format) == 32)
130 return uc.ui[0];
131 else
132 return uc.us | (uc.us << 16);
133 }
134
r300_cbzb_clear_allowed(struct r300_context * r300,unsigned clear_buffers)135 static boolean r300_cbzb_clear_allowed(struct r300_context *r300,
136 unsigned clear_buffers)
137 {
138 struct pipe_framebuffer_state *fb =
139 (struct pipe_framebuffer_state*)r300->fb_state.state;
140
141 /* Only color clear allowed, and only one colorbuffer. */
142 if ((clear_buffers & ~PIPE_CLEAR_COLOR) != 0 || fb->nr_cbufs != 1 || !fb->cbufs[0])
143 return FALSE;
144
145 return r300_surface(fb->cbufs[0])->cbzb_allowed;
146 }
147
r300_fast_zclear_allowed(struct r300_context * r300,unsigned clear_buffers)148 static boolean r300_fast_zclear_allowed(struct r300_context *r300,
149 unsigned clear_buffers)
150 {
151 struct pipe_framebuffer_state *fb =
152 (struct pipe_framebuffer_state*)r300->fb_state.state;
153
154 return r300_resource(fb->zsbuf->texture)->tex.zmask_dwords[fb->zsbuf->u.tex.level] != 0;
155 }
156
r300_hiz_clear_allowed(struct r300_context * r300)157 static boolean r300_hiz_clear_allowed(struct r300_context *r300)
158 {
159 struct pipe_framebuffer_state *fb =
160 (struct pipe_framebuffer_state*)r300->fb_state.state;
161
162 return r300_resource(fb->zsbuf->texture)->tex.hiz_dwords[fb->zsbuf->u.tex.level] != 0;
163 }
164
r300_depth_clear_value(enum pipe_format format,double depth,unsigned stencil)165 static uint32_t r300_depth_clear_value(enum pipe_format format,
166 double depth, unsigned stencil)
167 {
168 switch (format) {
169 case PIPE_FORMAT_Z16_UNORM:
170 case PIPE_FORMAT_X8Z24_UNORM:
171 return util_pack_z(format, depth);
172
173 case PIPE_FORMAT_S8_UINT_Z24_UNORM:
174 return util_pack_z_stencil(format, depth, stencil);
175
176 default:
177 assert(0);
178 return 0;
179 }
180 }
181
r300_hiz_clear_value(double depth)182 static uint32_t r300_hiz_clear_value(double depth)
183 {
184 uint32_t r = (uint32_t)(CLAMP(depth, 0, 1) * 255.5);
185 assert(r <= 255);
186 return r | (r << 8) | (r << 16) | (r << 24);
187 }
188
r300_set_clear_color(struct r300_context * r300,const union pipe_color_union * color)189 static void r300_set_clear_color(struct r300_context *r300,
190 const union pipe_color_union *color)
191 {
192 struct pipe_framebuffer_state *fb =
193 (struct pipe_framebuffer_state*)r300->fb_state.state;
194 union util_color uc;
195
196 memset(&uc, 0, sizeof(uc));
197 util_pack_color(color->f, fb->cbufs[0]->format, &uc);
198
199 if (fb->cbufs[0]->format == PIPE_FORMAT_R16G16B16A16_FLOAT ||
200 fb->cbufs[0]->format == PIPE_FORMAT_R16G16B16X16_FLOAT) {
201 /* (0,1,2,3) maps to (B,G,R,A) */
202 r300->color_clear_value_gb = uc.h[0] | ((uint32_t)uc.h[1] << 16);
203 r300->color_clear_value_ar = uc.h[2] | ((uint32_t)uc.h[3] << 16);
204 } else {
205 r300->color_clear_value = uc.ui[0];
206 }
207 }
208
209 DEBUG_GET_ONCE_BOOL_OPTION(hyperz, "RADEON_HYPERZ", FALSE)
210
211 /* Clear currently bound buffers. */
r300_clear(struct pipe_context * pipe,unsigned buffers,const struct pipe_scissor_state * scissor_state,const union pipe_color_union * color,double depth,unsigned stencil)212 static void r300_clear(struct pipe_context* pipe,
213 unsigned buffers,
214 const struct pipe_scissor_state *scissor_state,
215 const union pipe_color_union *color,
216 double depth,
217 unsigned stencil)
218 {
219 /* My notes about Zbuffer compression:
220 *
221 * 1) The zbuffer must be micro-tiled and whole microtiles must be
222 * written if compression is enabled. If microtiling is disabled,
223 * it locks up.
224 *
225 * 2) There is ZMASK RAM which contains a compressed zbuffer.
226 * Each dword of the Z Mask contains compression information
227 * for 16 4x4 pixel tiles, that is 2 bits for each tile.
228 * On chips with 2 Z pipes, every other dword maps to a different
229 * pipe. On newer chipsets, there is a new compression mode
230 * with 8x8 pixel tiles per 2 bits.
231 *
232 * 3) The FASTFILL bit has nothing to do with filling. It only tells hw
233 * it should look in the ZMASK RAM first before fetching from a real
234 * zbuffer.
235 *
236 * 4) If a pixel is in a cleared state, ZB_DEPTHCLEARVALUE is returned
237 * during zbuffer reads instead of the value that is actually stored
238 * in the zbuffer memory. A pixel is in a cleared state when its ZMASK
239 * is equal to 0. Therefore, if you clear ZMASK with zeros, you may
240 * leave the zbuffer memory uninitialized, but then you must enable
241 * compression, so that the ZMASK RAM is actually used.
242 *
243 * 5) Each 4x4 (or 8x8) tile is automatically decompressed and recompressed
244 * during zbuffer updates. A special decompressing operation should be
245 * used to fully decompress a zbuffer, which basically just stores all
246 * compressed tiles in ZMASK to the zbuffer memory.
247 *
248 * 6) For a 16-bit zbuffer, compression causes a hung with one or
249 * two samples and should not be used.
250 *
251 * 7) FORCE_COMPRESSED_STENCIL_VALUE should be enabled for stencil clears
252 * to avoid needless decompression.
253 *
254 * 8) Fastfill must not be used if reading of compressed Z data is disabled
255 * and writing of compressed Z data is enabled (RD/WR_COMP_ENABLE),
256 * i.e. it cannot be used to compress the zbuffer.
257 *
258 * 9) ZB_CB_CLEAR does not interact with zbuffer compression in any way.
259 *
260 * - Marek
261 */
262
263 struct r300_context* r300 = r300_context(pipe);
264 struct pipe_framebuffer_state *fb =
265 (struct pipe_framebuffer_state*)r300->fb_state.state;
266 struct r300_hyperz_state *hyperz =
267 (struct r300_hyperz_state*)r300->hyperz_state.state;
268 uint32_t width = fb->width;
269 uint32_t height = fb->height;
270 uint32_t hyperz_dcv = hyperz->zb_depthclearvalue;
271
272 /* Use fast Z clear.
273 * The zbuffer must be in micro-tiled mode, otherwise it locks up. */
274 if (buffers & PIPE_CLEAR_DEPTHSTENCIL) {
275 boolean zmask_clear, hiz_clear;
276
277 /* If both depth and stencil are present, they must be cleared together. */
278 if (fb->zsbuf->texture->format == PIPE_FORMAT_S8_UINT_Z24_UNORM &&
279 (buffers & PIPE_CLEAR_DEPTHSTENCIL) != PIPE_CLEAR_DEPTHSTENCIL) {
280 zmask_clear = FALSE;
281 hiz_clear = FALSE;
282 } else {
283 zmask_clear = r300_fast_zclear_allowed(r300, buffers);
284 hiz_clear = r300_hiz_clear_allowed(r300);
285 }
286
287 /* If we need Hyper-Z. */
288 if (zmask_clear || hiz_clear) {
289 /* Try to obtain the access to Hyper-Z buffers if we don't have one. */
290 if (!r300->hyperz_enabled &&
291 (r300->screen->caps.is_r500 || debug_get_option_hyperz())) {
292 r300->hyperz_enabled =
293 r300->rws->cs_request_feature(&r300->cs,
294 RADEON_FID_R300_HYPERZ_ACCESS,
295 TRUE);
296 if (r300->hyperz_enabled) {
297 /* Need to emit HyperZ buffer regs for the first time. */
298 r300_mark_fb_state_dirty(r300, R300_CHANGED_HYPERZ_FLAG);
299 }
300 }
301
302 /* Setup Hyper-Z clears. */
303 if (r300->hyperz_enabled) {
304 if (zmask_clear) {
305 hyperz_dcv = hyperz->zb_depthclearvalue =
306 r300_depth_clear_value(fb->zsbuf->format, depth, stencil);
307
308 r300_mark_atom_dirty(r300, &r300->zmask_clear);
309 r300_mark_atom_dirty(r300, &r300->gpu_flush);
310 buffers &= ~PIPE_CLEAR_DEPTHSTENCIL;
311 }
312
313 if (hiz_clear) {
314 r300->hiz_clear_value = r300_hiz_clear_value(depth);
315 r300_mark_atom_dirty(r300, &r300->hiz_clear);
316 r300_mark_atom_dirty(r300, &r300->gpu_flush);
317 }
318 r300->num_z_clears++;
319 }
320 }
321 }
322
323 /* Use fast color clear for an AA colorbuffer.
324 * The CMASK is shared between all colorbuffers, so we use it
325 * if there is only one colorbuffer bound. */
326 if ((buffers & PIPE_CLEAR_COLOR) && fb->nr_cbufs == 1 && fb->cbufs[0] &&
327 r300_resource(fb->cbufs[0]->texture)->tex.cmask_dwords) {
328 /* Try to obtain the access to the CMASK if we don't have one. */
329 if (!r300->cmask_access) {
330 r300->cmask_access =
331 r300->rws->cs_request_feature(&r300->cs,
332 RADEON_FID_R300_CMASK_ACCESS,
333 TRUE);
334 }
335
336 /* Setup the clear. */
337 if (r300->cmask_access) {
338 /* Pair the resource with the CMASK to avoid other resources
339 * accessing it. */
340 if (!r300->screen->cmask_resource) {
341 mtx_lock(&r300->screen->cmask_mutex);
342 /* Double checking (first unlocked, then locked). */
343 if (!r300->screen->cmask_resource) {
344 /* Don't reference this, so that the texture can be
345 * destroyed while set in cmask_resource.
346 * Then in texture_destroy, we set cmask_resource to NULL. */
347 r300->screen->cmask_resource = fb->cbufs[0]->texture;
348 }
349 mtx_unlock(&r300->screen->cmask_mutex);
350 }
351
352 if (r300->screen->cmask_resource == fb->cbufs[0]->texture) {
353 r300_set_clear_color(r300, color);
354 r300_mark_atom_dirty(r300, &r300->cmask_clear);
355 r300_mark_atom_dirty(r300, &r300->gpu_flush);
356 buffers &= ~PIPE_CLEAR_COLOR;
357 }
358 }
359 }
360 /* Enable CBZB clear. */
361 else if (r300_cbzb_clear_allowed(r300, buffers)) {
362 struct r300_surface *surf = r300_surface(fb->cbufs[0]);
363
364 hyperz->zb_depthclearvalue =
365 r300_depth_clear_cb_value(surf->base.format, color->f);
366
367 width = surf->cbzb_width;
368 height = surf->cbzb_height;
369
370 r300->cbzb_clear = TRUE;
371 r300_mark_fb_state_dirty(r300, R300_CHANGED_HYPERZ_FLAG);
372 }
373
374 /* Clear. */
375 if (buffers) {
376 /* Clear using the blitter. */
377 r300_blitter_begin(r300, R300_CLEAR);
378 util_blitter_clear(r300->blitter, width, height, 1,
379 buffers, color, depth, stencil,
380 util_framebuffer_get_num_samples(fb) > 1);
381 r300_blitter_end(r300);
382 } else if (r300->zmask_clear.dirty ||
383 r300->hiz_clear.dirty ||
384 r300->cmask_clear.dirty) {
385 /* Just clear zmask and hiz now, this does not use the standard draw
386 * procedure. */
387 /* Calculate zmask_clear and hiz_clear atom sizes. */
388 unsigned dwords =
389 r300->gpu_flush.size +
390 (r300->zmask_clear.dirty ? r300->zmask_clear.size : 0) +
391 (r300->hiz_clear.dirty ? r300->hiz_clear.size : 0) +
392 (r300->cmask_clear.dirty ? r300->cmask_clear.size : 0) +
393 r300_get_num_cs_end_dwords(r300);
394
395 /* Reserve CS space. */
396 if (!r300->rws->cs_check_space(&r300->cs, dwords)) {
397 r300_flush(&r300->context, PIPE_FLUSH_ASYNC, NULL);
398 }
399
400 /* Emit clear packets. */
401 r300_emit_gpu_flush(r300, r300->gpu_flush.size, r300->gpu_flush.state);
402 r300->gpu_flush.dirty = FALSE;
403
404 if (r300->zmask_clear.dirty) {
405 r300_emit_zmask_clear(r300, r300->zmask_clear.size,
406 r300->zmask_clear.state);
407 r300->zmask_clear.dirty = FALSE;
408 }
409 if (r300->hiz_clear.dirty) {
410 r300_emit_hiz_clear(r300, r300->hiz_clear.size,
411 r300->hiz_clear.state);
412 r300->hiz_clear.dirty = FALSE;
413 }
414 if (r300->cmask_clear.dirty) {
415 r300_emit_cmask_clear(r300, r300->cmask_clear.size,
416 r300->cmask_clear.state);
417 r300->cmask_clear.dirty = FALSE;
418 }
419 } else {
420 assert(0);
421 }
422
423 /* Disable CBZB clear. */
424 if (r300->cbzb_clear) {
425 r300->cbzb_clear = FALSE;
426 hyperz->zb_depthclearvalue = hyperz_dcv;
427 r300_mark_fb_state_dirty(r300, R300_CHANGED_HYPERZ_FLAG);
428 }
429
430 /* Enable fastfill and/or hiz.
431 *
432 * If we cleared zmask/hiz, it's in use now. The Hyper-Z state update
433 * looks if zmask/hiz is in use and programs hardware accordingly. */
434 if (r300->zmask_in_use || r300->hiz_in_use) {
435 r300_mark_atom_dirty(r300, &r300->hyperz_state);
436 }
437 }
438
439 /* Clear a region of a color surface to a constant value. */
r300_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,bool render_condition_enabled)440 static void r300_clear_render_target(struct pipe_context *pipe,
441 struct pipe_surface *dst,
442 const union pipe_color_union *color,
443 unsigned dstx, unsigned dsty,
444 unsigned width, unsigned height,
445 bool render_condition_enabled)
446 {
447 struct r300_context *r300 = r300_context(pipe);
448
449 r300_blitter_begin(r300, R300_CLEAR_SURFACE |
450 (render_condition_enabled ? 0 : R300_IGNORE_RENDER_COND));
451 util_blitter_clear_render_target(r300->blitter, dst, color,
452 dstx, dsty, width, height);
453 r300_blitter_end(r300);
454 }
455
456 /* Clear a region of a depth stencil surface. */
r300_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,bool render_condition_enabled)457 static void r300_clear_depth_stencil(struct pipe_context *pipe,
458 struct pipe_surface *dst,
459 unsigned clear_flags,
460 double depth,
461 unsigned stencil,
462 unsigned dstx, unsigned dsty,
463 unsigned width, unsigned height,
464 bool render_condition_enabled)
465 {
466 struct r300_context *r300 = r300_context(pipe);
467 struct pipe_framebuffer_state *fb =
468 (struct pipe_framebuffer_state*)r300->fb_state.state;
469
470 if (r300->zmask_in_use && !r300->locked_zbuffer) {
471 if (fb->zsbuf->texture == dst->texture) {
472 r300_decompress_zmask(r300);
473 }
474 }
475
476 /* XXX Do not decompress ZMask of the currently-set zbuffer. */
477 r300_blitter_begin(r300, R300_CLEAR_SURFACE |
478 (render_condition_enabled ? 0 : R300_IGNORE_RENDER_COND));
479 util_blitter_clear_depth_stencil(r300->blitter, dst, clear_flags, depth, stencil,
480 dstx, dsty, width, height);
481 r300_blitter_end(r300);
482 }
483
r300_decompress_zmask(struct r300_context * r300)484 void r300_decompress_zmask(struct r300_context *r300)
485 {
486 struct pipe_framebuffer_state *fb =
487 (struct pipe_framebuffer_state*)r300->fb_state.state;
488
489 if (!r300->zmask_in_use || r300->locked_zbuffer)
490 return;
491
492 r300->zmask_decompress = TRUE;
493 r300_mark_atom_dirty(r300, &r300->hyperz_state);
494
495 r300_blitter_begin(r300, R300_DECOMPRESS);
496 util_blitter_custom_clear_depth(r300->blitter, fb->width, fb->height, 0,
497 r300->dsa_decompress_zmask);
498 r300_blitter_end(r300);
499
500 r300->zmask_decompress = FALSE;
501 r300->zmask_in_use = FALSE;
502 r300_mark_atom_dirty(r300, &r300->hyperz_state);
503 }
504
r300_decompress_zmask_locked_unsafe(struct r300_context * r300)505 void r300_decompress_zmask_locked_unsafe(struct r300_context *r300)
506 {
507 struct pipe_framebuffer_state fb;
508
509 memset(&fb, 0, sizeof(fb));
510 fb.width = r300->locked_zbuffer->width;
511 fb.height = r300->locked_zbuffer->height;
512 fb.zsbuf = r300->locked_zbuffer;
513
514 r300->context.set_framebuffer_state(&r300->context, &fb);
515 r300_decompress_zmask(r300);
516 }
517
r300_decompress_zmask_locked(struct r300_context * r300)518 void r300_decompress_zmask_locked(struct r300_context *r300)
519 {
520 struct pipe_framebuffer_state saved_fb;
521
522 memset(&saved_fb, 0, sizeof(saved_fb));
523 util_copy_framebuffer_state(&saved_fb, r300->fb_state.state);
524 r300_decompress_zmask_locked_unsafe(r300);
525 r300->context.set_framebuffer_state(&r300->context, &saved_fb);
526 util_unreference_framebuffer_state(&saved_fb);
527
528 pipe_surface_reference(&r300->locked_zbuffer, NULL);
529 }
530
r300_is_blit_supported(enum pipe_format format)531 bool r300_is_blit_supported(enum pipe_format format)
532 {
533 const struct util_format_description *desc =
534 util_format_description(format);
535
536 return desc->layout == UTIL_FORMAT_LAYOUT_PLAIN ||
537 desc->layout == UTIL_FORMAT_LAYOUT_S3TC ||
538 desc->layout == UTIL_FORMAT_LAYOUT_RGTC;
539 }
540
541 /* Copy a block of pixels from one surface to another. */
r300_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)542 static void r300_resource_copy_region(struct pipe_context *pipe,
543 struct pipe_resource *dst,
544 unsigned dst_level,
545 unsigned dstx, unsigned dsty, unsigned dstz,
546 struct pipe_resource *src,
547 unsigned src_level,
548 const struct pipe_box *src_box)
549 {
550 struct pipe_screen *screen = pipe->screen;
551 struct r300_context *r300 = r300_context(pipe);
552 struct pipe_framebuffer_state *fb =
553 (struct pipe_framebuffer_state*)r300->fb_state.state;
554 unsigned src_width0 = r300_resource(src)->tex.width0;
555 unsigned src_height0 = r300_resource(src)->tex.height0;
556 unsigned dst_width0 = r300_resource(dst)->tex.width0;
557 unsigned dst_height0 = r300_resource(dst)->tex.height0;
558 unsigned layout;
559 struct pipe_box box, dstbox;
560 struct pipe_sampler_view src_templ, *src_view;
561 struct pipe_surface dst_templ, *dst_view;
562
563 /* Fallback for buffers. */
564 if ((dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) ||
565 !r300_is_blit_supported(dst->format)) {
566 util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
567 src, src_level, src_box);
568 return;
569 }
570
571 /* Can't read MSAA textures. */
572 if (src->nr_samples > 1 || dst->nr_samples > 1) {
573 return;
574 }
575
576 /* The code below changes the texture format so that the copy can be done
577 * on hardware. E.g. depth-stencil surfaces are copied as RGBA
578 * colorbuffers. */
579
580 util_blitter_default_dst_texture(&dst_templ, dst, dst_level, dstz);
581 util_blitter_default_src_texture(r300->blitter, &src_templ, src, src_level);
582
583 layout = util_format_description(dst_templ.format)->layout;
584
585 /* Handle non-renderable plain formats. */
586 if (layout == UTIL_FORMAT_LAYOUT_PLAIN &&
587 (!screen->is_format_supported(screen, src_templ.format, src->target,
588 src->nr_samples, src->nr_storage_samples,
589 PIPE_BIND_SAMPLER_VIEW) ||
590 !screen->is_format_supported(screen, dst_templ.format, dst->target,
591 dst->nr_samples, dst->nr_storage_samples,
592 PIPE_BIND_RENDER_TARGET))) {
593 switch (util_format_get_blocksize(dst_templ.format)) {
594 case 1:
595 dst_templ.format = PIPE_FORMAT_I8_UNORM;
596 break;
597 case 2:
598 dst_templ.format = PIPE_FORMAT_B4G4R4A4_UNORM;
599 break;
600 case 4:
601 dst_templ.format = PIPE_FORMAT_B8G8R8A8_UNORM;
602 break;
603 case 8:
604 dst_templ.format = PIPE_FORMAT_R16G16B16A16_UNORM;
605 break;
606 default:
607 debug_printf("r300: copy_region: Unhandled format: %s. Falling back to software.\n"
608 "r300: copy_region: Software fallback doesn't work for tiled textures.\n",
609 util_format_short_name(dst_templ.format));
610 }
611 src_templ.format = dst_templ.format;
612 }
613
614 /* Handle compressed formats. */
615 if (layout == UTIL_FORMAT_LAYOUT_S3TC ||
616 layout == UTIL_FORMAT_LAYOUT_RGTC) {
617 assert(src_templ.format == dst_templ.format);
618
619 box = *src_box;
620 src_box = &box;
621
622 dst_width0 = align(dst_width0, 4);
623 dst_height0 = align(dst_height0, 4);
624 src_width0 = align(src_width0, 4);
625 src_height0 = align(src_height0, 4);
626 box.width = align(box.width, 4);
627 box.height = align(box.height, 4);
628
629 switch (util_format_get_blocksize(dst_templ.format)) {
630 case 8:
631 /* one 4x4 pixel block has 8 bytes.
632 * we set 1 pixel = 4 bytes ===> 1 block corrensponds to 2 pixels. */
633 dst_templ.format = PIPE_FORMAT_R8G8B8A8_UNORM;
634 dst_width0 = dst_width0 / 2;
635 src_width0 = src_width0 / 2;
636 dstx /= 2;
637 box.x /= 2;
638 box.width /= 2;
639 break;
640 case 16:
641 /* one 4x4 pixel block has 16 bytes.
642 * we set 1 pixel = 4 bytes ===> 1 block corresponds to 4 pixels. */
643 dst_templ.format = PIPE_FORMAT_R8G8B8A8_UNORM;
644 break;
645 }
646 src_templ.format = dst_templ.format;
647
648 dst_height0 = dst_height0 / 4;
649 src_height0 = src_height0 / 4;
650 dsty /= 4;
651 box.y /= 4;
652 box.height /= 4;
653 }
654
655 /* Fallback for textures. */
656 if (!screen->is_format_supported(screen, dst_templ.format,
657 dst->target, dst->nr_samples,
658 dst->nr_storage_samples,
659 PIPE_BIND_RENDER_TARGET) ||
660 !screen->is_format_supported(screen, src_templ.format,
661 src->target, src->nr_samples,
662 src->nr_storage_samples,
663 PIPE_BIND_SAMPLER_VIEW)) {
664 assert(0 && "this shouldn't happen, update r300_is_blit_supported");
665 util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
666 src, src_level, src_box);
667 return;
668 }
669
670 /* Decompress ZMASK. */
671 if (r300->zmask_in_use && !r300->locked_zbuffer) {
672 if (fb->zsbuf->texture == src ||
673 fb->zsbuf->texture == dst) {
674 r300_decompress_zmask(r300);
675 }
676 }
677
678 dst_view = r300_create_surface_custom(pipe, dst, &dst_templ, dst_width0, dst_height0);
679 src_view = r300_create_sampler_view_custom(pipe, src, &src_templ, src_width0, src_height0);
680
681 u_box_3d(dstx, dsty, dstz, abs(src_box->width), abs(src_box->height),
682 abs(src_box->depth), &dstbox);
683
684 r300_blitter_begin(r300, R300_COPY);
685 util_blitter_blit_generic(r300->blitter, dst_view, &dstbox,
686 src_view, src_box, src_width0, src_height0,
687 PIPE_MASK_RGBAZS, PIPE_TEX_FILTER_NEAREST, NULL,
688 FALSE, FALSE, 0);
689 r300_blitter_end(r300);
690
691 pipe_surface_reference(&dst_view, NULL);
692 pipe_sampler_view_reference(&src_view, NULL);
693 }
694
r300_is_simple_msaa_resolve(const struct pipe_blit_info * info)695 static boolean r300_is_simple_msaa_resolve(const struct pipe_blit_info *info)
696 {
697 unsigned dst_width = u_minify(info->dst.resource->width0, info->dst.level);
698 unsigned dst_height = u_minify(info->dst.resource->height0, info->dst.level);
699
700 return info->src.resource->nr_samples > 1 &&
701 info->dst.resource->nr_samples <= 1 &&
702 info->dst.resource->format == info->src.resource->format &&
703 info->dst.resource->format == info->dst.format &&
704 info->src.resource->format == info->src.format &&
705 !info->scissor_enable &&
706 info->mask == PIPE_MASK_RGBA &&
707 dst_width == info->src.resource->width0 &&
708 dst_height == info->src.resource->height0 &&
709 info->dst.box.x == 0 &&
710 info->dst.box.y == 0 &&
711 info->dst.box.width == dst_width &&
712 info->dst.box.height == dst_height &&
713 info->src.box.x == 0 &&
714 info->src.box.y == 0 &&
715 info->src.box.width == dst_width &&
716 info->src.box.height == dst_height &&
717 (r300_resource(info->dst.resource)->tex.microtile != RADEON_LAYOUT_LINEAR ||
718 r300_resource(info->dst.resource)->tex.macrotile[info->dst.level] != RADEON_LAYOUT_LINEAR);
719 }
720
r300_simple_msaa_resolve(struct pipe_context * pipe,struct pipe_resource * dst,unsigned dst_level,unsigned dst_layer,struct pipe_resource * src,enum pipe_format format)721 static void r300_simple_msaa_resolve(struct pipe_context *pipe,
722 struct pipe_resource *dst,
723 unsigned dst_level,
724 unsigned dst_layer,
725 struct pipe_resource *src,
726 enum pipe_format format)
727 {
728 struct r300_context *r300 = r300_context(pipe);
729 struct r300_surface *srcsurf, *dstsurf;
730 struct pipe_surface surf_tmpl;
731 struct r300_aa_state *aa = (struct r300_aa_state*)r300->aa_state.state;
732
733 memset(&surf_tmpl, 0, sizeof(surf_tmpl));
734 surf_tmpl.format = format;
735 srcsurf = r300_surface(pipe->create_surface(pipe, src, &surf_tmpl));
736
737 surf_tmpl.format = format;
738 surf_tmpl.u.tex.level = dst_level;
739 surf_tmpl.u.tex.first_layer =
740 surf_tmpl.u.tex.last_layer = dst_layer;
741 dstsurf = r300_surface(pipe->create_surface(pipe, dst, &surf_tmpl));
742
743 /* COLORPITCH should contain the tiling info of the resolve buffer.
744 * The tiling of the AA buffer isn't programmable anyway. */
745 srcsurf->pitch &= ~(R300_COLOR_TILE(1) | R300_COLOR_MICROTILE(3));
746 srcsurf->pitch |= dstsurf->pitch & (R300_COLOR_TILE(1) | R300_COLOR_MICROTILE(3));
747
748 /* Enable AA resolve. */
749 aa->dest = dstsurf;
750 r300->aa_state.size = 8;
751 r300_mark_atom_dirty(r300, &r300->aa_state);
752
753 /* Resolve the surface. */
754 r300_blitter_begin(r300, R300_CLEAR_SURFACE);
755 util_blitter_custom_color(r300->blitter, &srcsurf->base, NULL);
756 r300_blitter_end(r300);
757
758 /* Disable AA resolve. */
759 aa->dest = NULL;
760 r300->aa_state.size = 4;
761 r300_mark_atom_dirty(r300, &r300->aa_state);
762
763 pipe_surface_reference((struct pipe_surface**)&srcsurf, NULL);
764 pipe_surface_reference((struct pipe_surface**)&dstsurf, NULL);
765 }
766
r300_msaa_resolve(struct pipe_context * pipe,const struct pipe_blit_info * info)767 static void r300_msaa_resolve(struct pipe_context *pipe,
768 const struct pipe_blit_info *info)
769 {
770 struct r300_context *r300 = r300_context(pipe);
771 struct pipe_screen *screen = pipe->screen;
772 struct pipe_resource *tmp, templ;
773 struct pipe_blit_info blit;
774
775 assert(info->src.level == 0);
776 assert(info->src.box.z == 0);
777 assert(info->src.box.depth == 1);
778 assert(info->dst.box.depth == 1);
779
780 if (r300_is_simple_msaa_resolve(info)) {
781 r300_simple_msaa_resolve(pipe, info->dst.resource, info->dst.level,
782 info->dst.box.z, info->src.resource,
783 info->src.format);
784 return;
785 }
786
787 /* resolve into a temporary texture, then blit */
788 memset(&templ, 0, sizeof(templ));
789 templ.target = PIPE_TEXTURE_2D;
790 templ.format = info->src.resource->format;
791 templ.width0 = info->src.resource->width0;
792 templ.height0 = info->src.resource->height0;
793 templ.depth0 = 1;
794 templ.array_size = 1;
795 templ.usage = PIPE_USAGE_DEFAULT;
796 templ.flags = R300_RESOURCE_FORCE_MICROTILING;
797
798 tmp = screen->resource_create(screen, &templ);
799
800 /* resolve */
801 r300_simple_msaa_resolve(pipe, tmp, 0, 0, info->src.resource,
802 info->src.format);
803
804 /* blit */
805 blit = *info;
806 blit.src.resource = tmp;
807 blit.src.box.z = 0;
808
809 r300_blitter_begin(r300, R300_BLIT | R300_IGNORE_RENDER_COND);
810 util_blitter_blit(r300->blitter, &blit);
811 r300_blitter_end(r300);
812
813 pipe_resource_reference(&tmp, NULL);
814 }
815
r300_blit(struct pipe_context * pipe,const struct pipe_blit_info * blit)816 static void r300_blit(struct pipe_context *pipe,
817 const struct pipe_blit_info *blit)
818 {
819 struct r300_context *r300 = r300_context(pipe);
820 struct pipe_framebuffer_state *fb =
821 (struct pipe_framebuffer_state*)r300->fb_state.state;
822 struct pipe_blit_info info = *blit;
823
824 /* The driver supports sRGB textures but not framebuffers. Blitting
825 * from sRGB to sRGB should be the same as blitting from linear
826 * to linear, so use that, This avoids incorrect linearization.
827 */
828 if (util_format_is_srgb(info.src.format)) {
829 info.src.format = util_format_linear(info.src.format);
830 info.dst.format = util_format_linear(info.dst.format);
831 }
832
833 /* MSAA resolve. */
834 if (info.src.resource->nr_samples > 1 &&
835 !util_format_is_depth_or_stencil(info.src.resource->format)) {
836 r300_msaa_resolve(pipe, &info);
837 return;
838 }
839
840 /* Can't read MSAA textures. */
841 if (info.src.resource->nr_samples > 1) {
842 return;
843 }
844
845 /* Blit a combined depth-stencil resource as color.
846 * S8Z24 is the only supported stencil format. */
847 if ((info.mask & PIPE_MASK_S) &&
848 info.src.format == PIPE_FORMAT_S8_UINT_Z24_UNORM &&
849 info.dst.format == PIPE_FORMAT_S8_UINT_Z24_UNORM) {
850 if (info.dst.resource->nr_samples > 1) {
851 /* Cannot do that with MSAA buffers. */
852 info.mask &= ~PIPE_MASK_S;
853 if (!(info.mask & PIPE_MASK_Z)) {
854 return;
855 }
856 } else {
857 /* Single-sample buffer. */
858 info.src.format = PIPE_FORMAT_B8G8R8A8_UNORM;
859 info.dst.format = PIPE_FORMAT_B8G8R8A8_UNORM;
860 if (info.mask & PIPE_MASK_Z) {
861 info.mask = PIPE_MASK_RGBA; /* depth+stencil */
862 } else {
863 info.mask = PIPE_MASK_B; /* stencil only */
864 }
865 }
866 }
867
868 /* Decompress ZMASK. */
869 if (r300->zmask_in_use && !r300->locked_zbuffer) {
870 if (fb->zsbuf->texture == info.src.resource ||
871 fb->zsbuf->texture == info.dst.resource) {
872 r300_decompress_zmask(r300);
873 }
874 }
875
876 r300_blitter_begin(r300, R300_BLIT |
877 (info.render_condition_enable ? 0 : R300_IGNORE_RENDER_COND));
878 util_blitter_blit(r300->blitter, &info);
879 r300_blitter_end(r300);
880 }
881
r300_flush_resource(struct pipe_context * ctx,struct pipe_resource * resource)882 static void r300_flush_resource(struct pipe_context *ctx,
883 struct pipe_resource *resource)
884 {
885 }
886
r300_init_blit_functions(struct r300_context * r300)887 void r300_init_blit_functions(struct r300_context *r300)
888 {
889 r300->context.clear = r300_clear;
890 r300->context.clear_render_target = r300_clear_render_target;
891 r300->context.clear_depth_stencil = r300_clear_depth_stencil;
892 r300->context.resource_copy_region = r300_resource_copy_region;
893 r300->context.blit = r300_blit;
894 r300->context.flush_resource = r300_flush_resource;
895 }
896