2 * Copyright 2014, 2015 Red Hat.
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9 * the Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
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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,
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21 * USE OR OTHER DEALINGS IN THE SOFTWARE.
24 #include "util/u_inlines.h"
25 #include "util/u_memory.h"
26 #include "virgl_context.h"
27 #include "virgl_encode.h"
28 #include "virgl_resource.h"
29 #include "virgl_screen.h"
31 static void *virgl_buffer_transfer_map(struct pipe_context
*ctx
,
32 struct pipe_resource
*resource
,
35 const struct pipe_box
*box
,
36 struct pipe_transfer
**transfer
)
38 struct virgl_context
*vctx
= virgl_context(ctx
);
39 struct virgl_screen
*vs
= virgl_screen(ctx
->screen
);
40 struct virgl_resource
*vbuf
= virgl_resource(resource
);
41 struct virgl_transfer
*trans
;
42 enum virgl_transfer_map_type map_type
;
45 trans
= virgl_resource_create_transfer(vctx
, resource
,
46 &vbuf
->metadata
, level
, usage
, box
);
48 map_type
= virgl_resource_transfer_prepare(vctx
, trans
);
50 case VIRGL_TRANSFER_MAP_REALLOC
:
51 if (!virgl_resource_realloc(vctx
, vbuf
)) {
55 vs
->vws
->resource_reference(vs
->vws
, &trans
->hw_res
, vbuf
->hw_res
);
57 case VIRGL_TRANSFER_MAP_HW_RES
:
58 trans
->hw_res_map
= vs
->vws
->resource_map(vs
->vws
, vbuf
->hw_res
);
59 if (trans
->hw_res_map
)
60 map_addr
= trans
->hw_res_map
+ trans
->offset
;
64 case VIRGL_TRANSFER_MAP_STAGING
:
65 map_addr
= virgl_staging_map(vctx
, trans
);
66 /* Copy transfers don't make use of hw_res_map at the moment. */
67 trans
->hw_res_map
= NULL
;
69 case VIRGL_TRANSFER_MAP_ERROR
:
71 trans
->hw_res_map
= NULL
;
77 virgl_resource_destroy_transfer(vctx
, trans
);
81 if (usage
& PIPE_TRANSFER_WRITE
)
82 util_range_add(&vbuf
->valid_buffer_range
, box
->x
, box
->x
+ box
->width
);
84 *transfer
= &trans
->base
;
88 static void virgl_buffer_transfer_unmap(struct pipe_context
*ctx
,
89 struct pipe_transfer
*transfer
)
91 struct virgl_context
*vctx
= virgl_context(ctx
);
92 struct virgl_transfer
*trans
= virgl_transfer(transfer
);
94 if (trans
->base
.usage
& PIPE_TRANSFER_WRITE
) {
95 if (transfer
->usage
& PIPE_TRANSFER_FLUSH_EXPLICIT
) {
96 if (trans
->range
.end
<= trans
->range
.start
) {
97 virgl_resource_destroy_transfer(vctx
, trans
);
101 transfer
->box
.x
+= trans
->range
.start
;
102 transfer
->box
.width
= trans
->range
.end
- trans
->range
.start
;
103 trans
->offset
= transfer
->box
.x
;
106 if (trans
->copy_src_hw_res
) {
107 virgl_encode_copy_transfer(vctx
, trans
);
108 virgl_resource_destroy_transfer(vctx
, trans
);
110 virgl_transfer_queue_unmap(&vctx
->queue
, trans
);
113 virgl_resource_destroy_transfer(vctx
, trans
);
116 static void virgl_buffer_transfer_flush_region(struct pipe_context
*ctx
,
117 struct pipe_transfer
*transfer
,
118 const struct pipe_box
*box
)
120 struct virgl_transfer
*trans
= virgl_transfer(transfer
);
123 * FIXME: This is not optimal. For example,
125 * glMapBufferRange(.., 0, 100, GL_MAP_FLUSH_EXPLICIT_BIT)
126 * glFlushMappedBufferRange(.., 25, 30)
127 * glFlushMappedBufferRange(.., 65, 70)
129 * We'll end up flushing 25 --> 70.
131 util_range_add(&trans
->range
, box
->x
, box
->x
+ box
->width
);
134 static const struct u_resource_vtbl virgl_buffer_vtbl
=
136 u_default_resource_get_handle
, /* get_handle */
137 virgl_resource_destroy
, /* resource_destroy */
138 virgl_buffer_transfer_map
, /* transfer_map */
139 virgl_buffer_transfer_flush_region
, /* transfer_flush_region */
140 virgl_buffer_transfer_unmap
, /* transfer_unmap */
143 void virgl_buffer_init(struct virgl_resource
*res
)
145 res
->u
.vtbl
= &virgl_buffer_vtbl
;