r600_blit.c revision 2f6eb3afb725112b2a0b110493f5062f80a78a3f
1/*
2 * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
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 "r600_pipe.h"
24#include "util/u_surface.h"
25#include "util/u_blitter.h"
26#include "util/u_format.h"
27
28enum r600_blitter_op /* bitmask */
29{
30	R600_SAVE_FRAGMENT_STATE = 1,
31	R600_SAVE_TEXTURES       = 2,
32	R600_SAVE_FRAMEBUFFER    = 4,
33	R600_DISABLE_RENDER_COND = 8,
34
35	R600_CLEAR         = R600_SAVE_FRAGMENT_STATE,
36
37	R600_CLEAR_SURFACE = R600_SAVE_FRAGMENT_STATE | R600_SAVE_FRAMEBUFFER,
38
39	R600_COPY_BUFFER   = R600_DISABLE_RENDER_COND,
40
41	R600_COPY_TEXTURE  = R600_SAVE_FRAGMENT_STATE | R600_SAVE_FRAMEBUFFER | R600_SAVE_TEXTURES |
42			     R600_DISABLE_RENDER_COND,
43
44	R600_DECOMPRESS    = R600_SAVE_FRAGMENT_STATE | R600_SAVE_FRAMEBUFFER | R600_DISABLE_RENDER_COND,
45
46	R600_COLOR_RESOLVE = R600_SAVE_FRAGMENT_STATE | R600_SAVE_FRAMEBUFFER | R600_DISABLE_RENDER_COND
47};
48
49static void r600_blitter_begin(struct pipe_context *ctx, enum r600_blitter_op op)
50{
51	struct r600_context *rctx = (struct r600_context *)ctx;
52
53	r600_suspend_nontimer_queries(rctx);
54
55	util_blitter_save_vertex_buffers(rctx->blitter,
56					 util_last_bit(rctx->vertex_buffer_state.enabled_mask),
57					 rctx->vertex_buffer_state.vb);
58	util_blitter_save_vertex_elements(rctx->blitter, rctx->vertex_elements);
59	util_blitter_save_vertex_shader(rctx->blitter, rctx->vs_shader);
60	util_blitter_save_so_targets(rctx->blitter, rctx->num_so_targets,
61				     (struct pipe_stream_output_target**)rctx->so_targets);
62	util_blitter_save_rasterizer(rctx->blitter, rctx->states[R600_PIPE_STATE_RASTERIZER]);
63
64	if (op & R600_SAVE_FRAGMENT_STATE) {
65		if (rctx->states[R600_PIPE_STATE_VIEWPORT]) {
66			util_blitter_save_viewport(rctx->blitter, &rctx->viewport);
67		}
68		util_blitter_save_fragment_shader(rctx->blitter, rctx->ps_shader);
69		util_blitter_save_blend(rctx->blitter, rctx->states[R600_PIPE_STATE_BLEND]);
70		util_blitter_save_depth_stencil_alpha(rctx->blitter, rctx->states[R600_PIPE_STATE_DSA]);
71		if (rctx->states[R600_PIPE_STATE_STENCIL_REF]) {
72			util_blitter_save_stencil_ref(rctx->blitter, &rctx->stencil_ref);
73		}
74                util_blitter_save_sample_mask(rctx->blitter, rctx->sample_mask.sample_mask);
75	}
76
77	if (op & R600_SAVE_FRAMEBUFFER)
78		util_blitter_save_framebuffer(rctx->blitter, &rctx->framebuffer);
79
80	if (op & R600_SAVE_TEXTURES) {
81		util_blitter_save_fragment_sampler_states(
82			rctx->blitter, rctx->ps_samplers.n_samplers,
83			(void**)rctx->ps_samplers.samplers);
84
85		util_blitter_save_fragment_sampler_views(
86			rctx->blitter, util_last_bit(rctx->ps_samplers.views.enabled_mask),
87			(struct pipe_sampler_view**)rctx->ps_samplers.views.views);
88	}
89
90	if ((op & R600_DISABLE_RENDER_COND) && rctx->current_render_cond) {
91		rctx->saved_render_cond = rctx->current_render_cond;
92		rctx->saved_render_cond_mode = rctx->current_render_cond_mode;
93		rctx->context.render_condition(&rctx->context, NULL, 0);
94	}
95
96}
97
98static void r600_blitter_end(struct pipe_context *ctx)
99{
100	struct r600_context *rctx = (struct r600_context *)ctx;
101	if (rctx->saved_render_cond) {
102		rctx->context.render_condition(&rctx->context,
103					       rctx->saved_render_cond,
104					       rctx->saved_render_cond_mode);
105		rctx->saved_render_cond = NULL;
106	}
107	r600_resume_nontimer_queries(rctx);
108}
109
110static unsigned u_max_layer(struct pipe_resource *r, unsigned level)
111{
112	switch (r->target) {
113	case PIPE_TEXTURE_CUBE:
114		return 6 - 1;
115	case PIPE_TEXTURE_3D:
116		return u_minify(r->depth0, level) - 1;
117	case PIPE_TEXTURE_1D_ARRAY:
118	case PIPE_TEXTURE_2D_ARRAY:
119		return r->array_size - 1;
120	default:
121		return 0;
122	}
123}
124
125static unsigned u_max_sample(struct pipe_resource *r)
126{
127	return r->nr_samples ? r->nr_samples - 1 : 0;
128}
129
130void r600_blit_decompress_depth(struct pipe_context *ctx,
131		struct r600_texture *texture,
132		struct r600_texture *staging,
133		unsigned first_level, unsigned last_level,
134		unsigned first_layer, unsigned last_layer,
135		unsigned first_sample, unsigned last_sample)
136{
137	struct r600_context *rctx = (struct r600_context *)ctx;
138	unsigned layer, level, sample, checked_last_layer, max_layer, max_sample;
139	struct r600_texture *flushed_depth_texture = staging ?
140			staging : texture->flushed_depth_texture;
141	const struct util_format_description *desc =
142		util_format_description(texture->resource.b.b.format);
143	float depth;
144
145	if (!staging && !texture->dirty_level_mask)
146		return;
147
148	max_sample = u_max_sample(&texture->resource.b.b);
149
150	/* XXX Decompressing MSAA depth textures is broken on R6xx.
151	 * There is also a hardlock if CMASK and FMASK are not present.
152	 * Just skip this until we find out how to fix it. */
153	if (rctx->chip_class == R600 && max_sample > 0) {
154		texture->dirty_level_mask = 0;
155		return;
156	}
157
158	if (rctx->family == CHIP_RV610 || rctx->family == CHIP_RV630 ||
159	    rctx->family == CHIP_RV620 || rctx->family == CHIP_RV635)
160		depth = 0.0f;
161	else
162		depth = 1.0f;
163
164	/* Enable decompression in DB_RENDER_CONTROL */
165	rctx->db_misc_state.flush_depthstencil_through_cb = true;
166	rctx->db_misc_state.copy_depth = util_format_has_depth(desc);
167	rctx->db_misc_state.copy_stencil = util_format_has_stencil(desc);
168	rctx->db_misc_state.copy_sample = first_sample;
169	r600_atom_dirty(rctx, &rctx->db_misc_state.atom);
170
171
172	for (level = first_level; level <= last_level; level++) {
173		if (!staging && !(texture->dirty_level_mask & (1 << level)))
174			continue;
175
176		/* The smaller the mipmap level, the less layers there are
177		 * as far as 3D textures are concerned. */
178		max_layer = u_max_layer(&texture->resource.b.b, level);
179		checked_last_layer = last_layer < max_layer ? last_layer : max_layer;
180
181		for (layer = first_layer; layer <= checked_last_layer; layer++) {
182			for (sample = first_sample; sample <= last_sample; sample++) {
183				struct pipe_surface *zsurf, *cbsurf, surf_tmpl;
184
185				if (sample != rctx->db_misc_state.copy_sample) {
186					rctx->db_misc_state.copy_sample = sample;
187					r600_atom_dirty(rctx, &rctx->db_misc_state.atom);
188				}
189
190				surf_tmpl.format = texture->resource.b.b.format;
191				surf_tmpl.u.tex.level = level;
192				surf_tmpl.u.tex.first_layer = layer;
193				surf_tmpl.u.tex.last_layer = layer;
194				surf_tmpl.usage = PIPE_BIND_DEPTH_STENCIL;
195
196				zsurf = ctx->create_surface(ctx, &texture->resource.b.b, &surf_tmpl);
197
198				surf_tmpl.format = flushed_depth_texture->resource.b.b.format;
199				surf_tmpl.u.tex.level = level;
200				surf_tmpl.u.tex.first_layer = layer;
201				surf_tmpl.u.tex.last_layer = layer;
202				surf_tmpl.usage = PIPE_BIND_RENDER_TARGET;
203				cbsurf = ctx->create_surface(ctx,
204						&flushed_depth_texture->resource.b.b, &surf_tmpl);
205
206				r600_blitter_begin(ctx, R600_DECOMPRESS);
207				util_blitter_custom_depth_stencil(rctx->blitter, zsurf, cbsurf, 1 << sample,
208								  rctx->custom_dsa_flush, depth);
209				r600_blitter_end(ctx);
210
211				pipe_surface_reference(&zsurf, NULL);
212				pipe_surface_reference(&cbsurf, NULL);
213			}
214		}
215
216		/* The texture will always be dirty if some layers or samples aren't flushed.
217		 * I don't think this case occurs often though. */
218		if (!staging &&
219		    first_layer == 0 && last_layer == max_layer &&
220		    first_sample == 0 && last_sample == max_sample) {
221			texture->dirty_level_mask &= ~(1 << level);
222		}
223	}
224
225	/* reenable compression in DB_RENDER_CONTROL */
226	rctx->db_misc_state.flush_depthstencil_through_cb = false;
227	r600_atom_dirty(rctx, &rctx->db_misc_state.atom);
228}
229
230void r600_decompress_depth_textures(struct r600_context *rctx,
231			       struct r600_samplerview_state *textures)
232{
233	unsigned i;
234	unsigned depth_texture_mask = textures->compressed_depthtex_mask;
235
236	while (depth_texture_mask) {
237		struct pipe_sampler_view *view;
238		struct r600_texture *tex;
239
240		i = u_bit_scan(&depth_texture_mask);
241
242		view = &textures->views[i]->base;
243		assert(view);
244
245		tex = (struct r600_texture *)view->texture;
246		assert(tex->is_depth && !tex->is_flushing_texture);
247
248		r600_blit_decompress_depth(&rctx->context, tex, NULL,
249					   view->u.tex.first_level, view->u.tex.last_level,
250					   0, u_max_layer(&tex->resource.b.b, view->u.tex.first_level),
251					   0, u_max_sample(&tex->resource.b.b));
252	}
253}
254
255static void r600_blit_decompress_color(struct pipe_context *ctx,
256		struct r600_texture *rtex,
257		unsigned first_level, unsigned last_level,
258		unsigned first_layer, unsigned last_layer)
259{
260	struct r600_context *rctx = (struct r600_context *)ctx;
261	unsigned layer, level, checked_last_layer, max_layer;
262
263	if (!rtex->dirty_level_mask)
264		return;
265
266	for (level = first_level; level <= last_level; level++) {
267		if (!(rtex->dirty_level_mask & (1 << level)))
268			continue;
269
270		/* The smaller the mipmap level, the less layers there are
271		 * as far as 3D textures are concerned. */
272		max_layer = u_max_layer(&rtex->resource.b.b, level);
273		checked_last_layer = last_layer < max_layer ? last_layer : max_layer;
274
275		for (layer = first_layer; layer <= checked_last_layer; layer++) {
276			struct pipe_surface *cbsurf, surf_tmpl;
277
278			surf_tmpl.format = rtex->resource.b.b.format;
279			surf_tmpl.u.tex.level = level;
280			surf_tmpl.u.tex.first_layer = layer;
281			surf_tmpl.u.tex.last_layer = layer;
282			surf_tmpl.usage = PIPE_BIND_RENDER_TARGET;
283			cbsurf = ctx->create_surface(ctx, &rtex->resource.b.b, &surf_tmpl);
284
285			r600_blitter_begin(ctx, R600_DECOMPRESS);
286			util_blitter_custom_color(rctx->blitter, cbsurf,
287						  rctx->custom_blend_decompress);
288			r600_blitter_end(ctx);
289
290			pipe_surface_reference(&cbsurf, NULL);
291		}
292
293		/* The texture will always be dirty if some layers or samples aren't flushed.
294		 * I don't think this case occurs often though. */
295		if (first_layer == 0 && last_layer == max_layer) {
296			rtex->dirty_level_mask &= ~(1 << level);
297		}
298	}
299}
300
301void r600_decompress_color_textures(struct r600_context *rctx,
302				    struct r600_samplerview_state *textures)
303{
304	unsigned i;
305	unsigned mask = textures->compressed_colortex_mask;
306
307	while (mask) {
308		struct pipe_sampler_view *view;
309		struct r600_texture *tex;
310
311		i = u_bit_scan(&mask);
312
313		view = &textures->views[i]->base;
314		assert(view);
315
316		tex = (struct r600_texture *)view->texture;
317		assert(tex->cmask_size && tex->fmask_size);
318
319		r600_blit_decompress_color(&rctx->context, tex,
320					   view->u.tex.first_level, view->u.tex.last_level,
321					   0, u_max_layer(&tex->resource.b.b, view->u.tex.first_level));
322	}
323}
324
325static void r600_copy_first_sample(struct pipe_context *ctx,
326				   const struct pipe_resolve_info *info)
327{
328	struct r600_context *rctx = (struct r600_context *)ctx;
329	struct r600_texture *rsrc = (struct r600_texture*)info->src.res;
330	struct pipe_surface *dst_view, dst_templ;
331	struct pipe_sampler_view src_templ, *src_view;
332	struct pipe_box box;
333
334	if (rsrc->is_depth && !rsrc->is_flushing_texture) {
335		if (!r600_init_flushed_depth_texture(ctx, info->src.res, NULL))
336			return; /* error */
337
338		/* Decompress the first sample only. */
339		r600_blit_decompress_depth(ctx,	rsrc, NULL,
340					   0, 0,
341					   info->src.layer, info->src.layer,
342					   0, 0);
343	}
344	if (rsrc->fmask_size && rsrc->cmask_size) {
345		r600_blit_decompress_color(ctx, rsrc,
346					   0, 0,
347					   info->src.layer, info->src.layer);
348	}
349
350	/* this is correct for upside-down blits too */
351	u_box_2d(info->src.x0,
352		 info->src.y0,
353		 info->src.x1 - info->src.x0,
354		 info->src.y1 - info->src.y0, &box);
355
356	/* Initialize the surface. */
357	util_blitter_default_dst_texture(&dst_templ, info->dst.res,
358					 info->dst.level, info->dst.layer, &box);
359	dst_view = ctx->create_surface(ctx, info->dst.res, &dst_templ);
360
361	/* Initialize the sampler view. */
362	util_blitter_default_src_texture(&src_templ, info->src.res, 0);
363	src_view = ctx->create_sampler_view(ctx, info->src.res, &src_templ);
364
365	/* Copy the first sample into dst. */
366	r600_blitter_begin(ctx, R600_COPY_TEXTURE);
367	util_blitter_copy_texture_view(rctx->blitter, dst_view, ~0, info->dst.x0,
368				       info->dst.y0, src_view, 0, &box,
369				       info->src.res->width0, info->src.res->height0,
370				       info->mask);
371	r600_blitter_end(ctx);
372
373	pipe_surface_reference(&dst_view, NULL);
374	pipe_sampler_view_reference(&src_view, NULL);
375}
376
377static boolean is_simple_resolve(const struct pipe_resolve_info *info)
378{
379   unsigned dst_width = u_minify(info->dst.res->width0, info->dst.level);
380   unsigned dst_height = u_minify(info->dst.res->height0, info->dst.level);
381
382   return info->dst.res->format == info->src.res->format &&
383          dst_width == info->src.res->width0 &&
384          dst_height == info->src.res->height0 &&
385          info->dst.x0 == 0 &&
386          info->dst.y0 == 0 &&
387          info->dst.x1 == dst_width &&
388          info->dst.y1 == dst_height &&
389          info->src.x0 == 0 &&
390          info->src.y0 == 0 &&
391          info->src.x1 == dst_width &&
392          info->src.y1 == dst_height;
393}
394
395static void r600_color_resolve(struct pipe_context *ctx,
396			       const struct pipe_resolve_info *info)
397{
398	struct r600_context *rctx = (struct r600_context *)ctx;
399	struct pipe_screen *screen = ctx->screen;
400	struct pipe_resource *tmp, templ;
401	struct pipe_box box;
402
403	assert((info->mask & PIPE_MASK_RGBA) == PIPE_MASK_RGBA);
404
405	if (is_simple_resolve(info)) {
406		r600_blitter_begin(ctx, R600_COLOR_RESOLVE);
407		util_blitter_custom_resolve_color(rctx->blitter,
408						  info->dst.res, info->dst.level, info->dst.layer,
409						  info->src.res, info->src.layer,
410						  rctx->custom_blend_resolve);
411		r600_blitter_end(ctx);
412		return;
413	}
414
415	/* resolve into a temporary texture, then blit */
416	templ.target = PIPE_TEXTURE_2D;
417	templ.format = info->src.res->format;
418	templ.width0 = info->src.res->width0;
419	templ.height0 = info->src.res->height0;
420	templ.depth0 = 1;
421	templ.array_size = 1;
422	templ.last_level = 0;
423	templ.nr_samples = 0;
424	templ.usage = PIPE_USAGE_STATIC;
425	templ.bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
426	templ.flags = 0;
427
428	tmp = screen->resource_create(screen, &templ);
429
430	/* XXX use scissor, so that only the needed part of the resource is resolved */
431	r600_blitter_begin(ctx, R600_COLOR_RESOLVE);
432	util_blitter_custom_resolve_color(rctx->blitter,
433					  tmp, 0, 0,
434					  info->src.res, info->src.layer,
435					  rctx->custom_blend_resolve);
436	r600_blitter_end(ctx);
437
438	/* this is correct for upside-down blits too */
439	u_box_2d(info->src.x0,
440		 info->src.y0,
441		 info->src.x1 - info->src.x0,
442		 info->src.y1 - info->src.y0, &box);
443
444	r600_blitter_begin(ctx, R600_COPY_TEXTURE);
445	util_blitter_copy_texture(rctx->blitter, info->dst.res, info->dst.level,
446				  ~0, info->dst.x0, info->dst.y0, info->dst.layer,
447				  tmp, 0, 0, &box);
448	r600_blitter_end(ctx);
449
450	pipe_resource_reference(&tmp, NULL);
451}
452
453static void r600_resource_resolve(struct pipe_context *ctx,
454				  const struct pipe_resolve_info *info)
455{
456	/* make sure we're doing a resolve operation */
457	assert(info->src.res->nr_samples > 1);
458	assert(info->dst.res->nr_samples <= 1);
459
460	/* limitations of multisample resources */
461	assert(info->src.res->last_level == 0);
462	assert(info->src.res->target == PIPE_TEXTURE_2D ||
463	       info->src.res->target == PIPE_TEXTURE_2D_ARRAY);
464
465	/* check if the resolve box is valid */
466	assert(info->dst.x0 < info->dst.x1);
467	assert(info->dst.y0 < info->dst.y1);
468
469	/* scaled resolve isn't allowed */
470	assert(abs(info->dst.x0 - info->dst.x1) ==
471	       abs(info->src.x0 - info->src.x1));
472	assert(abs(info->dst.y0 - info->dst.y1) ==
473	       abs(info->src.y0 - info->src.y1));
474
475	if ((info->mask & PIPE_MASK_ZS) ||
476	    util_format_is_pure_integer(info->src.res->format)) {
477		r600_copy_first_sample(ctx, info);
478	} else {
479		r600_color_resolve(ctx, info);
480	}
481}
482
483static void r600_clear(struct pipe_context *ctx, unsigned buffers,
484		       const union pipe_color_union *color,
485		       double depth, unsigned stencil)
486{
487	struct r600_context *rctx = (struct r600_context *)ctx;
488	struct pipe_framebuffer_state *fb = &rctx->framebuffer;
489
490	r600_blitter_begin(ctx, R600_CLEAR);
491	util_blitter_clear(rctx->blitter, fb->width, fb->height,
492			   fb->nr_cbufs, buffers, fb->nr_cbufs ? fb->cbufs[0]->format : PIPE_FORMAT_NONE,
493			   color, depth, stencil);
494	r600_blitter_end(ctx);
495}
496
497static void r600_clear_render_target(struct pipe_context *ctx,
498				     struct pipe_surface *dst,
499				     const union pipe_color_union *color,
500				     unsigned dstx, unsigned dsty,
501				     unsigned width, unsigned height)
502{
503	struct r600_context *rctx = (struct r600_context *)ctx;
504
505	r600_blitter_begin(ctx, R600_CLEAR_SURFACE);
506	util_blitter_clear_render_target(rctx->blitter, dst, color,
507					 dstx, dsty, width, height);
508	r600_blitter_end(ctx);
509}
510
511static void r600_clear_depth_stencil(struct pipe_context *ctx,
512				     struct pipe_surface *dst,
513				     unsigned clear_flags,
514				     double depth,
515				     unsigned stencil,
516				     unsigned dstx, unsigned dsty,
517				     unsigned width, unsigned height)
518{
519	struct r600_context *rctx = (struct r600_context *)ctx;
520
521	r600_blitter_begin(ctx, R600_CLEAR_SURFACE);
522	util_blitter_clear_depth_stencil(rctx->blitter, dst, clear_flags, depth, stencil,
523					 dstx, dsty, width, height);
524	r600_blitter_end(ctx);
525}
526
527void r600_copy_buffer(struct pipe_context *ctx, struct
528		      pipe_resource *dst, unsigned dstx,
529		      struct pipe_resource *src, const struct pipe_box *src_box)
530{
531	struct r600_context *rctx = (struct r600_context*)ctx;
532
533	if (rctx->screen->has_streamout &&
534	    /* Require dword alignment. */
535	    dstx % 4 == 0 && src_box->x % 4 == 0 && src_box->width % 4 == 0) {
536		r600_blitter_begin(ctx, R600_COPY_BUFFER);
537		util_blitter_copy_buffer(rctx->blitter, dst, dstx, src, src_box->x, src_box->width);
538		r600_blitter_end(ctx);
539	} else {
540		util_resource_copy_region(ctx, dst, 0, dstx, 0, 0, src, 0, src_box);
541	}
542}
543
544struct texture_orig_info {
545	unsigned format;
546	unsigned width0;
547	unsigned height0;
548	unsigned npix_x;
549	unsigned npix_y;
550	unsigned npix0_x;
551	unsigned npix0_y;
552};
553
554static void r600_compressed_to_blittable(struct pipe_resource *tex,
555				   unsigned level,
556				   struct texture_orig_info *orig)
557{
558	struct r600_texture *rtex = (struct r600_texture*)tex;
559	unsigned pixsize = util_format_get_blocksize(rtex->resource.b.b.format);
560	int new_format;
561	int new_height, new_width;
562
563	orig->format = tex->format;
564	orig->width0 = tex->width0;
565	orig->height0 = tex->height0;
566	orig->npix0_x = rtex->surface.level[0].npix_x;
567	orig->npix0_y = rtex->surface.level[0].npix_y;
568	orig->npix_x = rtex->surface.level[level].npix_x;
569	orig->npix_y = rtex->surface.level[level].npix_y;
570
571	if (pixsize == 8)
572		new_format = PIPE_FORMAT_R16G16B16A16_UINT; /* 64-bit block */
573	else
574		new_format = PIPE_FORMAT_R32G32B32A32_UINT; /* 128-bit block */
575
576	new_width = util_format_get_nblocksx(tex->format, orig->width0);
577	new_height = util_format_get_nblocksy(tex->format, orig->height0);
578
579	tex->width0 = new_width;
580	tex->height0 = new_height;
581	tex->format = new_format;
582	rtex->surface.level[0].npix_x = util_format_get_nblocksx(orig->format, orig->npix0_x);
583	rtex->surface.level[0].npix_y = util_format_get_nblocksy(orig->format, orig->npix0_y);
584	rtex->surface.level[level].npix_x = util_format_get_nblocksx(orig->format, orig->npix_x);
585	rtex->surface.level[level].npix_y = util_format_get_nblocksy(orig->format, orig->npix_y);
586}
587
588static void r600_subsampled_2x1_32bpp_to_blittable(struct pipe_resource *tex,
589						   unsigned level,
590						   struct texture_orig_info *orig)
591{
592	struct r600_texture *rtex = (struct r600_texture*)tex;
593
594	orig->format = tex->format;
595	orig->width0 = tex->width0;
596	orig->height0 = tex->height0;
597	orig->npix0_x = rtex->surface.level[0].npix_x;
598	orig->npix0_y = rtex->surface.level[0].npix_y;
599	orig->npix_x = rtex->surface.level[level].npix_x;
600	orig->npix_y = rtex->surface.level[level].npix_y;
601
602	tex->width0 = util_format_get_nblocksx(orig->format, orig->width0);
603	tex->format = PIPE_FORMAT_R8G8B8A8_UINT;
604	rtex->surface.level[0].npix_x = util_format_get_nblocksx(orig->format, orig->npix0_x);
605	rtex->surface.level[level].npix_x = util_format_get_nblocksx(orig->format, orig->npix_x);
606}
607
608static void r600_change_format(struct pipe_resource *tex,
609			       unsigned level,
610			       struct texture_orig_info *orig,
611			       enum pipe_format format)
612{
613	struct r600_texture *rtex = (struct r600_texture*)tex;
614
615	orig->format = tex->format;
616	orig->width0 = tex->width0;
617	orig->height0 = tex->height0;
618	orig->npix0_x = rtex->surface.level[0].npix_x;
619	orig->npix0_y = rtex->surface.level[0].npix_y;
620	orig->npix_x = rtex->surface.level[level].npix_x;
621	orig->npix_y = rtex->surface.level[level].npix_y;
622
623	tex->format = format;
624}
625
626static void r600_reset_blittable_to_orig(struct pipe_resource *tex,
627					 unsigned level,
628					 struct texture_orig_info *orig)
629{
630	struct r600_texture *rtex = (struct r600_texture*)tex;
631
632	tex->format = orig->format;
633	tex->width0 = orig->width0;
634	tex->height0 = orig->height0;
635	rtex->surface.level[0].npix_x = orig->npix0_x;
636	rtex->surface.level[0].npix_y = orig->npix0_y;
637	rtex->surface.level[level].npix_x = orig->npix_x;
638	rtex->surface.level[level].npix_y = orig->npix_y;
639}
640
641static bool util_format_is_subsampled_2x1_32bpp(enum pipe_format format)
642{
643	const struct util_format_description *desc = util_format_description(format);
644
645	return desc->layout == UTIL_FORMAT_LAYOUT_SUBSAMPLED &&
646	       desc->block.width == 2 &&
647	       desc->block.height == 1 &&
648	       desc->block.bits == 32;
649}
650
651static void r600_resource_copy_region(struct pipe_context *ctx,
652				      struct pipe_resource *dst,
653				      unsigned dst_level,
654				      unsigned dstx, unsigned dsty, unsigned dstz,
655				      struct pipe_resource *src,
656				      unsigned src_level,
657				      const struct pipe_box *src_box)
658{
659	struct r600_context *rctx = (struct r600_context *)ctx;
660	struct r600_texture *rsrc = (struct r600_texture*)src;
661	struct texture_orig_info orig_info[2];
662	struct pipe_box sbox;
663	const struct pipe_box *psbox = src_box;
664	boolean restore_orig[2];
665	unsigned last_sample, i;
666
667	memset(orig_info, 0, sizeof(orig_info));
668
669	/* Handle buffers first. */
670	if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
671		r600_copy_buffer(ctx, dst, dstx, src, src_box);
672		return;
673	}
674
675	assert(u_max_sample(dst) == u_max_sample(src));
676	last_sample = u_max_sample(dst);
677
678	/* This must be done before entering u_blitter to avoid recursion. */
679	if (rsrc->is_depth && !rsrc->is_flushing_texture) {
680		if (!r600_init_flushed_depth_texture(ctx, src, NULL))
681			return; /* error */
682
683		r600_blit_decompress_depth(ctx, rsrc, NULL,
684					   src_level, src_level,
685					   src_box->z, src_box->z + src_box->depth - 1,
686					   0, u_max_sample(src));
687	}
688	if (rsrc->fmask_size && rsrc->cmask_size) {
689		r600_blit_decompress_color(ctx, rsrc, src_level, src_level,
690					   src_box->z, src_box->z + src_box->depth - 1);
691	}
692
693	restore_orig[0] = restore_orig[1] = FALSE;
694
695	if (util_format_is_compressed(src->format) &&
696	    util_format_is_compressed(dst->format)) {
697		r600_compressed_to_blittable(src, src_level, &orig_info[0]);
698		restore_orig[0] = TRUE;
699		sbox.x = util_format_get_nblocksx(orig_info[0].format, src_box->x);
700		sbox.y = util_format_get_nblocksy(orig_info[0].format, src_box->y);
701		sbox.z = src_box->z;
702		sbox.width = util_format_get_nblocksx(orig_info[0].format, src_box->width);
703		sbox.height = util_format_get_nblocksy(orig_info[0].format, src_box->height);
704		sbox.depth = src_box->depth;
705		psbox = &sbox;
706
707		r600_compressed_to_blittable(dst, dst_level, &orig_info[1]);
708		restore_orig[1] = TRUE;
709		/* translate the dst box as well */
710		dstx = util_format_get_nblocksx(orig_info[1].format, dstx);
711		dsty = util_format_get_nblocksy(orig_info[1].format, dsty);
712	} else if (!util_blitter_is_copy_supported(rctx->blitter, dst, src,
713						   PIPE_MASK_RGBAZS)) {
714		if (util_format_is_subsampled_2x1_32bpp(src->format) &&
715		    util_format_is_subsampled_2x1_32bpp(dst->format)) {
716			r600_subsampled_2x1_32bpp_to_blittable(src, src_level, &orig_info[0]);
717			r600_subsampled_2x1_32bpp_to_blittable(dst, dst_level, &orig_info[1]);
718
719			sbox = *src_box;
720			sbox.x = util_format_get_nblocksx(orig_info[0].format, src_box->x);
721			sbox.width = util_format_get_nblocksx(orig_info[0].format, src_box->width);
722			psbox = &sbox;
723
724			dstx = util_format_get_nblocksx(orig_info[1].format, dstx);
725		} else {
726			unsigned blocksize = util_format_get_blocksize(src->format);
727
728			switch (blocksize) {
729			case 1:
730				r600_change_format(src, src_level, &orig_info[0],
731						   PIPE_FORMAT_R8_UNORM);
732				r600_change_format(dst, dst_level, &orig_info[1],
733						   PIPE_FORMAT_R8_UNORM);
734				break;
735			case 4:
736				r600_change_format(src, src_level, &orig_info[0],
737						   PIPE_FORMAT_R8G8B8A8_UNORM);
738				r600_change_format(dst, dst_level, &orig_info[1],
739						   PIPE_FORMAT_R8G8B8A8_UNORM);
740				break;
741			default:
742				fprintf(stderr, "Unhandled format %s with blocksize %u\n",
743					util_format_short_name(src->format), blocksize);
744				assert(0);
745			}
746		}
747		restore_orig[0] = TRUE;
748		restore_orig[1] = TRUE;
749	}
750
751	for (i = 0; i <= last_sample; i++) {
752		r600_blitter_begin(ctx, R600_COPY_TEXTURE);
753		util_blitter_copy_texture(rctx->blitter, dst, dst_level, 1 << i, dstx, dsty, dstz,
754					  src, src_level, i, psbox);
755		r600_blitter_end(ctx);
756	}
757
758	if (restore_orig[0])
759		r600_reset_blittable_to_orig(src, src_level, &orig_info[0]);
760
761	if (restore_orig[1])
762		r600_reset_blittable_to_orig(dst, dst_level, &orig_info[1]);
763}
764
765void r600_init_blit_functions(struct r600_context *rctx)
766{
767	rctx->context.clear = r600_clear;
768	rctx->context.clear_render_target = r600_clear_render_target;
769	rctx->context.clear_depth_stencil = r600_clear_depth_stencil;
770	rctx->context.resource_copy_region = r600_resource_copy_region;
771	rctx->context.resource_resolve = r600_resource_resolve;
772}
773