2 * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
3 * Copyright 2010 Marek Olšák <maraeo@gmail.com>
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:
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
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. */
24 #include "r300_transfer.h"
25 #include "r300_texture_desc.h"
26 #include "r300_screen_buffer.h"
28 #include "util/u_memory.h"
29 #include "util/u_format.h"
30 #include "util/u_box.h"
32 struct r300_transfer
{
34 struct pipe_transfer transfer
;
36 /* Offset from start of buffer. */
40 struct r300_resource
*linear_texture
;
43 /* Convenience cast wrapper. */
44 static INLINE
struct r300_transfer
*
45 r300_transfer(struct pipe_transfer
* transfer
)
47 return (struct r300_transfer
*)transfer
;
50 /* Copy from a tiled texture to a detiled one. */
51 static void r300_copy_from_tiled_texture(struct pipe_context
*ctx
,
52 struct r300_transfer
*r300transfer
)
54 struct pipe_transfer
*transfer
= (struct pipe_transfer
*)r300transfer
;
55 struct pipe_resource
*tex
= transfer
->resource
;
57 ctx
->resource_copy_region(ctx
, &r300transfer
->linear_texture
->b
.b
.b
, 0,
59 tex
, transfer
->level
, &transfer
->box
);
62 /* Copy a detiled texture to a tiled one. */
63 static void r300_copy_into_tiled_texture(struct pipe_context
*ctx
,
64 struct r300_transfer
*r300transfer
)
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
);
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
.b
, 0, &src_box
);
75 ctx
->flush(ctx
, 0, NULL
);
79 r300_texture_get_transfer(struct pipe_context
*ctx
,
80 struct pipe_resource
*texture
,
83 const struct pipe_box
*box
)
85 struct r300_context
*r300
= r300_context(ctx
);
86 struct r300_resource
*tex
= r300_resource(texture
);
87 struct r300_transfer
*trans
;
88 struct pipe_resource base
;
89 boolean referenced_cs
, referenced_hw
, blittable
;
92 r300
->rws
->cs_is_buffer_referenced(r300
->cs
,
93 tex
->cs_buf
, R300_REF_CS
);
98 r300
->rws
->cs_is_buffer_referenced(r300
->cs
,
99 tex
->cs_buf
, R300_REF_HW
);
102 blittable
= ctx
->screen
->is_format_supported(
103 ctx
->screen
, texture
->format
, texture
->target
, 0,
104 PIPE_BIND_SAMPLER_VIEW
| PIPE_BIND_RENDER_TARGET
, 0);
106 trans
= CALLOC_STRUCT(r300_transfer
);
108 /* Initialize the transfer object. */
109 pipe_resource_reference(&trans
->transfer
.resource
, texture
);
110 trans
->transfer
.level
= level
;
111 trans
->transfer
.usage
= usage
;
112 trans
->transfer
.box
= *box
;
114 /* If the texture is tiled, we must create a temporary detiled texture
116 * Also make write transfers pipelined. */
117 if (tex
->tex
.microtile
|| tex
->tex
.macrotile
[level
] ||
118 ((referenced_hw
& !(usage
& PIPE_TRANSFER_READ
)) && blittable
)) {
119 base
.target
= PIPE_TEXTURE_2D
;
120 base
.format
= texture
->format
;
121 base
.width0
= box
->width
;
122 base
.height0
= box
->height
;
127 base
.usage
= PIPE_USAGE_DYNAMIC
;
129 base
.flags
= R300_RESOURCE_FLAG_TRANSFER
;
131 /* For texture reading, the temporary (detiled) texture is used as
132 * a render target when blitting from a tiled texture. */
133 if (usage
& PIPE_TRANSFER_READ
) {
134 base
.bind
|= PIPE_BIND_RENDER_TARGET
;
136 /* For texture writing, the temporary texture is used as a sampler
137 * when blitting into a tiled texture. */
138 if (usage
& PIPE_TRANSFER_WRITE
) {
139 base
.bind
|= PIPE_BIND_SAMPLER_VIEW
;
142 /* Create the temporary texture. */
143 trans
->linear_texture
= r300_resource(
144 ctx
->screen
->resource_create(ctx
->screen
,
147 if (!trans
->linear_texture
) {
148 /* Oh crap, the thing can't create the texture.
149 * Let's flush and try again. */
150 ctx
->flush(ctx
, 0, NULL
);
152 trans
->linear_texture
= r300_resource(
153 ctx
->screen
->resource_create(ctx
->screen
,
156 if (!trans
->linear_texture
) {
157 /* For linear textures, it's safe to fallback to
158 * an unpipelined transfer. */
159 if (!tex
->tex
.microtile
&& !tex
->tex
.macrotile
[level
]) {
163 /* Otherwise, go to hell. */
165 "r300: Failed to create a transfer object, praise.\n");
171 assert(!trans
->linear_texture
->tex
.microtile
&&
172 !trans
->linear_texture
->tex
.macrotile
[0]);
176 * Even though we are using an internal texture for this,
177 * the transfer level, box and usage parameters still reflect
178 * the arguments received to get_transfer. We just do the
179 * right thing internally.
181 trans
->transfer
.stride
=
182 trans
->linear_texture
->tex
.stride_in_bytes
[0];
184 if (usage
& PIPE_TRANSFER_READ
) {
185 /* We cannot map a tiled texture directly because the data is
186 * in a different order, therefore we do detiling using a blit. */
187 r300_copy_from_tiled_texture(ctx
, trans
);
189 /* Always referenced in the blit. */
190 ctx
->flush(ctx
, 0, NULL
);
192 return &trans
->transfer
;
196 /* Unpipelined transfer. */
197 trans
->transfer
.stride
= tex
->tex
.stride_in_bytes
[level
];
198 trans
->offset
= r300_texture_get_offset(tex
, level
, box
->z
);
201 ctx
->flush(ctx
, PIPE_FLUSH_RENDER_CACHE
, NULL
);
202 return &trans
->transfer
;
207 void r300_texture_transfer_destroy(struct pipe_context
*ctx
,
208 struct pipe_transfer
*trans
)
210 struct r300_transfer
*r300transfer
= r300_transfer(trans
);
212 if (r300transfer
->linear_texture
) {
213 if (trans
->usage
& PIPE_TRANSFER_WRITE
) {
214 r300_copy_into_tiled_texture(ctx
, r300transfer
);
217 pipe_resource_reference(
218 (struct pipe_resource
**)&r300transfer
->linear_texture
, NULL
);
220 pipe_resource_reference(&trans
->resource
, NULL
);
224 void* r300_texture_transfer_map(struct pipe_context
*ctx
,
225 struct pipe_transfer
*transfer
)
227 struct r300_context
*r300
= r300_context(ctx
);
228 struct r300_winsys_screen
*rws
= (struct r300_winsys_screen
*)ctx
->winsys
;
229 struct r300_transfer
*r300transfer
= r300_transfer(transfer
);
230 struct r300_resource
*tex
= r300_resource(transfer
->resource
);
232 enum pipe_format format
= tex
->b
.b
.b
.format
;
234 if (r300transfer
->linear_texture
) {
235 /* The detiled texture is of the same size as the region being mapped
236 * (no offset needed). */
237 return rws
->buffer_map(rws
,
238 r300transfer
->linear_texture
->buf
,
242 /* Tiling is disabled. */
243 map
= rws
->buffer_map(rws
, tex
->buf
, r300
->cs
,
250 return map
+ r300_transfer(transfer
)->offset
+
251 transfer
->box
.y
/ util_format_get_blockheight(format
) * transfer
->stride
+
252 transfer
->box
.x
/ util_format_get_blockwidth(format
) * util_format_get_blocksize(format
);
256 void r300_texture_transfer_unmap(struct pipe_context
*ctx
,
257 struct pipe_transfer
*transfer
)
259 struct r300_winsys_screen
*rws
= (struct r300_winsys_screen
*)ctx
->winsys
;
260 struct r300_transfer
*r300transfer
= r300_transfer(transfer
);
261 struct r300_resource
*tex
= r300_resource(transfer
->resource
);
263 if (r300transfer
->linear_texture
) {
264 rws
->buffer_unmap(rws
, r300transfer
->linear_texture
->buf
);
266 rws
->buffer_unmap(rws
, tex
->buf
);