1 /*
2 * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
3 * Copyright 2010 Marek Olšák <maraeo@gmail.com>
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * on the rights to use, copy, modify, merge, publish, distribute, sub
9 * license, and/or sell copies of the Software, and to permit persons to whom
10 * the Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
22 * USE OR OTHER DEALINGS IN THE SOFTWARE. */
23
24 #include "r300_transfer.h"
25 #include "r300_texture_desc.h"
26 #include "r300_screen_buffer.h"
27
28 #include "util/u_memory.h"
29 #include "util/format/u_format.h"
30 #include "util/u_box.h"
31
32 struct r300_transfer {
33 /* Parent class */
34 struct pipe_transfer transfer;
35
36 /* Linear texture. */
37 struct r300_resource *linear_texture;
38 };
39
40 /* Convenience cast wrapper. */
41 static inline struct r300_transfer*
r300_transfer(struct pipe_transfer * transfer)42 r300_transfer(struct pipe_transfer* transfer)
43 {
44 return (struct r300_transfer*)transfer;
45 }
46
47 /* Copy from a tiled texture to a detiled one. */
r300_copy_from_tiled_texture(struct pipe_context * ctx,struct r300_transfer * r300transfer)48 static void r300_copy_from_tiled_texture(struct pipe_context *ctx,
49 struct r300_transfer *r300transfer)
50 {
51 struct pipe_transfer *transfer = (struct pipe_transfer*)r300transfer;
52 struct pipe_resource *src = transfer->resource;
53 struct pipe_resource *dst = &r300transfer->linear_texture->b;
54
55 if (src->nr_samples <= 1) {
56 ctx->resource_copy_region(ctx, dst, 0, 0, 0, 0,
57 src, transfer->level, &transfer->box);
58 } else {
59 /* Resolve the resource. */
60 struct pipe_blit_info blit;
61
62 memset(&blit, 0, sizeof(blit));
63 blit.src.resource = src;
64 blit.src.format = src->format;
65 blit.src.level = transfer->level;
66 blit.src.box = transfer->box;
67 blit.dst.resource = dst;
68 blit.dst.format = dst->format;
69 blit.dst.box.width = transfer->box.width;
70 blit.dst.box.height = transfer->box.height;
71 blit.dst.box.depth = transfer->box.depth;
72 blit.mask = PIPE_MASK_RGBA;
73 blit.filter = PIPE_TEX_FILTER_NEAREST;
74
75 ctx->blit(ctx, &blit);
76 }
77 }
78
79 /* Copy a detiled texture to a tiled one. */
r300_copy_into_tiled_texture(struct pipe_context * ctx,struct r300_transfer * r300transfer)80 static void r300_copy_into_tiled_texture(struct pipe_context *ctx,
81 struct r300_transfer *r300transfer)
82 {
83 struct pipe_transfer *transfer = (struct pipe_transfer*)r300transfer;
84 struct pipe_resource *tex = transfer->resource;
85 struct pipe_box src_box;
86
87 u_box_3d(0, 0, 0,
88 transfer->box.width, transfer->box.height, transfer->box.depth,
89 &src_box);
90
91 ctx->resource_copy_region(ctx, tex, transfer->level,
92 transfer->box.x, transfer->box.y, transfer->box.z,
93 &r300transfer->linear_texture->b, 0, &src_box);
94
95 /* XXX remove this. */
96 r300_flush(ctx, 0, NULL);
97 }
98
99 void *
r300_texture_transfer_map(struct pipe_context * ctx,struct pipe_resource * texture,unsigned level,unsigned usage,const struct pipe_box * box,struct pipe_transfer ** transfer)100 r300_texture_transfer_map(struct pipe_context *ctx,
101 struct pipe_resource *texture,
102 unsigned level,
103 unsigned usage,
104 const struct pipe_box *box,
105 struct pipe_transfer **transfer)
106 {
107 struct r300_context *r300 = r300_context(ctx);
108 struct r300_resource *tex = r300_resource(texture);
109 struct r300_transfer *trans;
110 boolean referenced_cs, referenced_hw;
111 enum pipe_format format = tex->b.format;
112 char *map;
113
114 referenced_cs =
115 r300->rws->cs_is_buffer_referenced(&r300->cs, tex->buf, RADEON_USAGE_READWRITE);
116 if (referenced_cs) {
117 referenced_hw = TRUE;
118 } else {
119 referenced_hw =
120 !r300->rws->buffer_wait(r300->rws, tex->buf, 0, RADEON_USAGE_READWRITE);
121 }
122
123 trans = CALLOC_STRUCT(r300_transfer);
124 if (trans) {
125 /* Initialize the transfer object. */
126 trans->transfer.resource = texture;
127 trans->transfer.level = level;
128 trans->transfer.usage = usage;
129 trans->transfer.box = *box;
130
131 /* If the texture is tiled, we must create a temporary detiled texture
132 * for this transfer.
133 * Also make write transfers pipelined. */
134 if (tex->tex.microtile || tex->tex.macrotile[level] ||
135 (referenced_hw && !(usage & PIPE_MAP_READ) &&
136 r300_is_blit_supported(texture->format))) {
137 struct pipe_resource base;
138
139 if (r300->blitter->running) {
140 fprintf(stderr, "r300: ERROR: Blitter recursion in texture_get_transfer.\n");
141 os_break();
142 }
143
144 memset(&base, 0, sizeof(base));
145 base.target = PIPE_TEXTURE_2D;
146 base.format = texture->format;
147 base.width0 = box->width;
148 base.height0 = box->height;
149 base.depth0 = 1;
150 base.array_size = 1;
151 base.usage = PIPE_USAGE_STAGING;
152 base.flags = R300_RESOURCE_FLAG_TRANSFER;
153
154 /* We must set the correct texture target and dimensions if needed for a 3D transfer. */
155 if (box->depth > 1 && util_max_layer(texture, level) > 0) {
156 base.target = texture->target;
157
158 if (base.target == PIPE_TEXTURE_3D) {
159 base.depth0 = util_next_power_of_two(box->depth);
160 }
161 }
162
163 /* Create the temporary texture. */
164 trans->linear_texture = r300_resource(
165 ctx->screen->resource_create(ctx->screen,
166 &base));
167
168 if (!trans->linear_texture) {
169 /* Oh crap, the thing can't create the texture.
170 * Let's flush and try again. */
171 r300_flush(ctx, 0, NULL);
172
173 trans->linear_texture = r300_resource(
174 ctx->screen->resource_create(ctx->screen,
175 &base));
176
177 if (!trans->linear_texture) {
178 fprintf(stderr,
179 "r300: Failed to create a transfer object.\n");
180 FREE(trans);
181 return NULL;
182 }
183 }
184
185 assert(!trans->linear_texture->tex.microtile &&
186 !trans->linear_texture->tex.macrotile[0]);
187
188 /* Set the stride. */
189 trans->transfer.stride =
190 trans->linear_texture->tex.stride_in_bytes[0];
191 trans->transfer.layer_stride =
192 trans->linear_texture->tex.layer_size_in_bytes[0];
193
194 if (usage & PIPE_MAP_READ) {
195 /* We cannot map a tiled texture directly because the data is
196 * in a different order, therefore we do detiling using a blit. */
197 r300_copy_from_tiled_texture(ctx, trans);
198
199 /* Always referenced in the blit. */
200 r300_flush(ctx, 0, NULL);
201 }
202 } else {
203 /* Unpipelined transfer. */
204 trans->transfer.stride = tex->tex.stride_in_bytes[level];
205 trans->transfer.layer_stride = tex->tex.layer_size_in_bytes[level];
206 trans->transfer.offset = r300_texture_get_offset(tex, level, box->z);
207
208 if (referenced_cs &&
209 !(usage & PIPE_MAP_UNSYNCHRONIZED)) {
210 r300_flush(ctx, 0, NULL);
211 }
212 }
213 }
214
215 if (trans->linear_texture) {
216 /* The detiled texture is of the same size as the region being mapped
217 * (no offset needed). */
218 map = r300->rws->buffer_map(r300->rws, trans->linear_texture->buf,
219 &r300->cs, usage);
220 if (!map) {
221 pipe_resource_reference(
222 (struct pipe_resource**)&trans->linear_texture, NULL);
223 FREE(trans);
224 return NULL;
225 }
226 *transfer = &trans->transfer;
227 return map;
228 } else {
229 /* Tiling is disabled. */
230 map = r300->rws->buffer_map(r300->rws, tex->buf, &r300->cs, usage);
231 if (!map) {
232 FREE(trans);
233 return NULL;
234 }
235
236 *transfer = &trans->transfer;
237 return map + trans->transfer.offset +
238 box->y / util_format_get_blockheight(format) * trans->transfer.stride +
239 box->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
240 }
241 }
242
r300_texture_transfer_unmap(struct pipe_context * ctx,struct pipe_transfer * transfer)243 void r300_texture_transfer_unmap(struct pipe_context *ctx,
244 struct pipe_transfer *transfer)
245 {
246 struct r300_transfer *trans = r300_transfer(transfer);
247
248 if (trans->linear_texture) {
249 if (transfer->usage & PIPE_MAP_WRITE) {
250 r300_copy_into_tiled_texture(ctx, trans);
251 }
252
253 pipe_resource_reference(
254 (struct pipe_resource**)&trans->linear_texture, NULL);
255 }
256 FREE(transfer);
257 }
258