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 /* Offset from start of buffer. */
37 unsigned offset;
38
39 /* Linear texture. */
40 struct r300_resource *linear_texture;
41 };
42
43 /* Convenience cast wrapper. */
44 static inline struct r300_transfer*
r300_transfer(struct pipe_transfer * transfer)45 r300_transfer(struct pipe_transfer* transfer)
46 {
47 return (struct r300_transfer*)transfer;
48 }
49
50 /* Copy from a tiled texture to a detiled one. */
r300_copy_from_tiled_texture(struct pipe_context * ctx,struct r300_transfer * r300transfer)51 static void r300_copy_from_tiled_texture(struct pipe_context *ctx,
52 struct r300_transfer *r300transfer)
53 {
54 struct pipe_transfer *transfer = (struct pipe_transfer*)r300transfer;
55 struct pipe_resource *src = transfer->resource;
56 struct pipe_resource *dst = &r300transfer->linear_texture->b.b;
57
58 if (src->nr_samples <= 1) {
59 ctx->resource_copy_region(ctx, dst, 0, 0, 0, 0,
60 src, transfer->level, &transfer->box);
61 } else {
62 /* Resolve the resource. */
63 struct pipe_blit_info blit;
64
65 memset(&blit, 0, sizeof(blit));
66 blit.src.resource = src;
67 blit.src.format = src->format;
68 blit.src.level = transfer->level;
69 blit.src.box = transfer->box;
70 blit.dst.resource = dst;
71 blit.dst.format = dst->format;
72 blit.dst.box.width = transfer->box.width;
73 blit.dst.box.height = transfer->box.height;
74 blit.dst.box.depth = transfer->box.depth;
75 blit.mask = PIPE_MASK_RGBA;
76 blit.filter = PIPE_TEX_FILTER_NEAREST;
77
78 ctx->blit(ctx, &blit);
79 }
80 }
81
82 /* Copy a detiled texture to a tiled one. */
r300_copy_into_tiled_texture(struct pipe_context * ctx,struct r300_transfer * r300transfer)83 static void r300_copy_into_tiled_texture(struct pipe_context *ctx,
84 struct r300_transfer *r300transfer)
85 {
86 struct pipe_transfer *transfer = (struct pipe_transfer*)r300transfer;
87 struct pipe_resource *tex = transfer->resource;
88 struct pipe_box src_box;
89
90 u_box_3d(0, 0, 0,
91 transfer->box.width, transfer->box.height, transfer->box.depth,
92 &src_box);
93
94 ctx->resource_copy_region(ctx, tex, transfer->level,
95 transfer->box.x, transfer->box.y, transfer->box.z,
96 &r300transfer->linear_texture->b.b, 0, &src_box);
97
98 /* XXX remove this. */
99 r300_flush(ctx, 0, NULL);
100 }
101
102 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)103 r300_texture_transfer_map(struct pipe_context *ctx,
104 struct pipe_resource *texture,
105 unsigned level,
106 unsigned usage,
107 const struct pipe_box *box,
108 struct pipe_transfer **transfer)
109 {
110 struct r300_context *r300 = r300_context(ctx);
111 struct r300_resource *tex = r300_resource(texture);
112 struct r300_transfer *trans;
113 boolean referenced_cs, referenced_hw;
114 enum pipe_format format = tex->b.b.format;
115 char *map;
116
117 referenced_cs =
118 r300->rws->cs_is_buffer_referenced(r300->cs, tex->buf, RADEON_USAGE_READWRITE);
119 if (referenced_cs) {
120 referenced_hw = TRUE;
121 } else {
122 referenced_hw =
123 !r300->rws->buffer_wait(tex->buf, 0, RADEON_USAGE_READWRITE);
124 }
125
126 trans = CALLOC_STRUCT(r300_transfer);
127 if (trans) {
128 /* Initialize the transfer object. */
129 trans->transfer.resource = texture;
130 trans->transfer.level = level;
131 trans->transfer.usage = usage;
132 trans->transfer.box = *box;
133
134 /* If the texture is tiled, we must create a temporary detiled texture
135 * for this transfer.
136 * Also make write transfers pipelined. */
137 if (tex->tex.microtile || tex->tex.macrotile[level] ||
138 (referenced_hw && !(usage & PIPE_MAP_READ) &&
139 r300_is_blit_supported(texture->format))) {
140 struct pipe_resource base;
141
142 if (r300->blitter->running) {
143 fprintf(stderr, "r300: ERROR: Blitter recursion in texture_get_transfer.\n");
144 os_break();
145 }
146
147 memset(&base, 0, sizeof(base));
148 base.target = PIPE_TEXTURE_2D;
149 base.format = texture->format;
150 base.width0 = box->width;
151 base.height0 = box->height;
152 base.depth0 = 1;
153 base.array_size = 1;
154 base.usage = PIPE_USAGE_STAGING;
155 base.flags = R300_RESOURCE_FLAG_TRANSFER;
156
157 /* We must set the correct texture target and dimensions if needed for a 3D transfer. */
158 if (box->depth > 1 && util_max_layer(texture, level) > 0) {
159 base.target = texture->target;
160
161 if (base.target == PIPE_TEXTURE_3D) {
162 base.depth0 = util_next_power_of_two(box->depth);
163 }
164 }
165
166 /* Create the temporary texture. */
167 trans->linear_texture = r300_resource(
168 ctx->screen->resource_create(ctx->screen,
169 &base));
170
171 if (!trans->linear_texture) {
172 /* Oh crap, the thing can't create the texture.
173 * Let's flush and try again. */
174 r300_flush(ctx, 0, NULL);
175
176 trans->linear_texture = r300_resource(
177 ctx->screen->resource_create(ctx->screen,
178 &base));
179
180 if (!trans->linear_texture) {
181 fprintf(stderr,
182 "r300: Failed to create a transfer object.\n");
183 FREE(trans);
184 return NULL;
185 }
186 }
187
188 assert(!trans->linear_texture->tex.microtile &&
189 !trans->linear_texture->tex.macrotile[0]);
190
191 /* Set the stride. */
192 trans->transfer.stride =
193 trans->linear_texture->tex.stride_in_bytes[0];
194 trans->transfer.layer_stride =
195 trans->linear_texture->tex.layer_size_in_bytes[0];
196
197 if (usage & PIPE_MAP_READ) {
198 /* We cannot map a tiled texture directly because the data is
199 * in a different order, therefore we do detiling using a blit. */
200 r300_copy_from_tiled_texture(ctx, trans);
201
202 /* Always referenced in the blit. */
203 r300_flush(ctx, 0, NULL);
204 }
205 } else {
206 /* Unpipelined transfer. */
207 trans->transfer.stride = tex->tex.stride_in_bytes[level];
208 trans->transfer.layer_stride = tex->tex.layer_size_in_bytes[level];
209 trans->offset = r300_texture_get_offset(tex, level, box->z);
210
211 if (referenced_cs &&
212 !(usage & PIPE_MAP_UNSYNCHRONIZED)) {
213 r300_flush(ctx, 0, NULL);
214 }
215 }
216 }
217
218 if (trans->linear_texture) {
219 /* The detiled texture is of the same size as the region being mapped
220 * (no offset needed). */
221 map = r300->rws->buffer_map(trans->linear_texture->buf,
222 r300->cs, usage);
223 if (!map) {
224 pipe_resource_reference(
225 (struct pipe_resource**)&trans->linear_texture, NULL);
226 FREE(trans);
227 return NULL;
228 }
229 *transfer = &trans->transfer;
230 return map;
231 } else {
232 /* Tiling is disabled. */
233 map = r300->rws->buffer_map(tex->buf, r300->cs, usage);
234 if (!map) {
235 FREE(trans);
236 return NULL;
237 }
238
239 *transfer = &trans->transfer;
240 return map + trans->offset +
241 box->y / util_format_get_blockheight(format) * trans->transfer.stride +
242 box->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
243 }
244 }
245
r300_texture_transfer_unmap(struct pipe_context * ctx,struct pipe_transfer * transfer)246 void r300_texture_transfer_unmap(struct pipe_context *ctx,
247 struct pipe_transfer *transfer)
248 {
249 struct r300_transfer *trans = r300_transfer(transfer);
250
251 if (trans->linear_texture) {
252 if (transfer->usage & PIPE_MAP_WRITE) {
253 r300_copy_into_tiled_texture(ctx, trans);
254 }
255
256 pipe_resource_reference(
257 (struct pipe_resource**)&trans->linear_texture, NULL);
258 }
259 FREE(transfer);
260 }
261