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/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 *tex = transfer->resource;
56
57 ctx->resource_copy_region(ctx, &r300transfer->linear_texture->b.b, 0,
58 0, 0, 0,
59 tex, transfer->level, &transfer->box);
60 }
61
62 /* Copy a detiled texture to a tiled one. */
r300_copy_into_tiled_texture(struct pipe_context * ctx,struct r300_transfer * r300transfer)63 static void r300_copy_into_tiled_texture(struct pipe_context *ctx,
64 struct r300_transfer *r300transfer)
65 {
66 struct pipe_transfer *transfer = (struct pipe_transfer*)r300transfer;
67 struct pipe_resource *tex = transfer->resource;
68 struct pipe_box src_box;
69 u_box_origin_2d(transfer->box.width, transfer->box.height, &src_box);
70
71 ctx->resource_copy_region(ctx, tex, transfer->level,
72 transfer->box.x, transfer->box.y, transfer->box.z,
73 &r300transfer->linear_texture->b.b, 0, &src_box);
74
75 /* XXX remove this. */
76 r300_flush(ctx, 0, NULL);
77 }
78
79 struct pipe_transfer*
r300_texture_get_transfer(struct pipe_context * ctx,struct pipe_resource * texture,unsigned level,unsigned usage,const struct pipe_box * box)80 r300_texture_get_transfer(struct pipe_context *ctx,
81 struct pipe_resource *texture,
82 unsigned level,
83 unsigned usage,
84 const struct pipe_box *box)
85 {
86 struct r300_context *r300 = r300_context(ctx);
87 struct r300_resource *tex = r300_resource(texture);
88 struct r300_transfer *trans;
89 struct pipe_resource base;
90 boolean referenced_cs, referenced_hw;
91
92 referenced_cs =
93 r300->rws->cs_is_buffer_referenced(r300->cs, tex->cs_buf, RADEON_USAGE_READWRITE);
94 if (referenced_cs) {
95 referenced_hw = TRUE;
96 } else {
97 referenced_hw =
98 r300->rws->buffer_is_busy(tex->buf, RADEON_USAGE_READWRITE);
99 }
100
101 trans = CALLOC_STRUCT(r300_transfer);
102 if (trans) {
103 /* Initialize the transfer object. */
104 pipe_resource_reference(&trans->transfer.resource, texture);
105 trans->transfer.level = level;
106 trans->transfer.usage = usage;
107 trans->transfer.box = *box;
108
109 /* If the texture is tiled, we must create a temporary detiled texture
110 * for this transfer.
111 * Also make write transfers pipelined. */
112 if (tex->tex.microtile || tex->tex.macrotile[level] ||
113 (referenced_hw && !(usage & PIPE_TRANSFER_READ) &&
114 r300_is_blit_supported(texture->format))) {
115 if (r300->blitter->running) {
116 fprintf(stderr, "r300: ERROR: Blitter recursion in texture_get_transfer.\n");
117 os_break();
118 }
119
120 base.target = PIPE_TEXTURE_2D;
121 base.format = texture->format;
122 base.width0 = box->width;
123 base.height0 = box->height;
124 base.depth0 = 1;
125 base.array_size = 1;
126 base.last_level = 0;
127 base.nr_samples = 0;
128 base.usage = PIPE_USAGE_STAGING;
129 base.bind = 0;
130 if (usage & PIPE_TRANSFER_READ) {
131 base.bind |= PIPE_BIND_SAMPLER_VIEW;
132 }
133 if (usage & PIPE_TRANSFER_WRITE) {
134 base.bind |= PIPE_BIND_RENDER_TARGET;
135 }
136 base.flags = R300_RESOURCE_FLAG_TRANSFER;
137
138 /* For texture reading, the temporary (detiled) texture is used as
139 * a render target when blitting from a tiled texture. */
140 if (usage & PIPE_TRANSFER_READ) {
141 base.bind |= PIPE_BIND_RENDER_TARGET;
142 }
143 /* For texture writing, the temporary texture is used as a sampler
144 * when blitting into a tiled texture. */
145 if (usage & PIPE_TRANSFER_WRITE) {
146 base.bind |= PIPE_BIND_SAMPLER_VIEW;
147 }
148
149 /* Create the temporary texture. */
150 trans->linear_texture = r300_resource(
151 ctx->screen->resource_create(ctx->screen,
152 &base));
153
154 if (!trans->linear_texture) {
155 /* Oh crap, the thing can't create the texture.
156 * Let's flush and try again. */
157 r300_flush(ctx, 0, NULL);
158
159 trans->linear_texture = r300_resource(
160 ctx->screen->resource_create(ctx->screen,
161 &base));
162
163 if (!trans->linear_texture) {
164 /* For linear textures, it's safe to fallback to
165 * an unpipelined transfer. */
166 if (!tex->tex.microtile && !tex->tex.macrotile[level]) {
167 goto unpipelined;
168 }
169
170 /* Otherwise, go to hell. */
171 fprintf(stderr,
172 "r300: Failed to create a transfer object, praise.\n");
173 FREE(trans);
174 return NULL;
175 }
176 }
177
178 assert(!trans->linear_texture->tex.microtile &&
179 !trans->linear_texture->tex.macrotile[0]);
180
181 /* Set the stride. */
182 trans->transfer.stride =
183 trans->linear_texture->tex.stride_in_bytes[0];
184
185 if (usage & PIPE_TRANSFER_READ) {
186 /* We cannot map a tiled texture directly because the data is
187 * in a different order, therefore we do detiling using a blit. */
188 r300_copy_from_tiled_texture(ctx, trans);
189
190 /* Always referenced in the blit. */
191 r300_flush(ctx, 0, NULL);
192 }
193 return &trans->transfer;
194 }
195
196 unpipelined:
197 /* Unpipelined transfer. */
198 trans->transfer.stride = tex->tex.stride_in_bytes[level];
199 trans->offset = r300_texture_get_offset(tex, level, box->z);
200
201 if (referenced_cs &&
202 !(usage & PIPE_TRANSFER_UNSYNCHRONIZED))
203 r300_flush(ctx, 0, NULL);
204 return &trans->transfer;
205 }
206 return NULL;
207 }
208
r300_texture_transfer_destroy(struct pipe_context * ctx,struct pipe_transfer * trans)209 void r300_texture_transfer_destroy(struct pipe_context *ctx,
210 struct pipe_transfer *trans)
211 {
212 struct r300_transfer *r300transfer = r300_transfer(trans);
213
214 if (r300transfer->linear_texture) {
215 if (trans->usage & PIPE_TRANSFER_WRITE) {
216 r300_copy_into_tiled_texture(ctx, r300transfer);
217 }
218
219 pipe_resource_reference(
220 (struct pipe_resource**)&r300transfer->linear_texture, NULL);
221 }
222 pipe_resource_reference(&trans->resource, NULL);
223 FREE(trans);
224 }
225
r300_texture_transfer_map(struct pipe_context * ctx,struct pipe_transfer * transfer)226 void* r300_texture_transfer_map(struct pipe_context *ctx,
227 struct pipe_transfer *transfer)
228 {
229 struct r300_context *r300 = r300_context(ctx);
230 struct r300_transfer *r300transfer = r300_transfer(transfer);
231 struct r300_resource *tex = r300_resource(transfer->resource);
232 char *map;
233 enum pipe_format format = tex->b.b.format;
234
235 if (r300transfer->linear_texture) {
236 /* The detiled texture is of the same size as the region being mapped
237 * (no offset needed). */
238 return r300->rws->buffer_map(r300transfer->linear_texture->cs_buf,
239 r300->cs, transfer->usage);
240 } else {
241 /* Tiling is disabled. */
242 map = r300->rws->buffer_map(tex->cs_buf, r300->cs, transfer->usage);
243
244 if (!map) {
245 return NULL;
246 }
247
248 return map + r300_transfer(transfer)->offset +
249 transfer->box.y / util_format_get_blockheight(format) * transfer->stride +
250 transfer->box.x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
251 }
252 }
253
r300_texture_transfer_unmap(struct pipe_context * ctx,struct pipe_transfer * transfer)254 void r300_texture_transfer_unmap(struct pipe_context *ctx,
255 struct pipe_transfer *transfer)
256 {
257 struct radeon_winsys *rws = r300_context(ctx)->rws;
258 struct r300_transfer *r300transfer = r300_transfer(transfer);
259 struct r300_resource *tex = r300_resource(transfer->resource);
260
261 if (r300transfer->linear_texture) {
262 rws->buffer_unmap(r300transfer->linear_texture->cs_buf);
263 } else {
264 rws->buffer_unmap(tex->cs_buf);
265 }
266 }
267