2 * Copyright 2014, 2015 Red Hat.
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11 * The above copyright notice and this permission notice (including the next
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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_unmap(struct pipe_context
*ctx
,
32 struct pipe_transfer
*transfer
)
34 struct virgl_context
*vctx
= virgl_context(ctx
);
35 struct virgl_transfer
*trans
= virgl_transfer(transfer
);
37 if (trans
->base
.usage
& PIPE_TRANSFER_WRITE
) {
38 if (transfer
->usage
& PIPE_TRANSFER_FLUSH_EXPLICIT
) {
39 if (trans
->range
.end
<= trans
->range
.start
) {
40 virgl_resource_destroy_transfer(vctx
, trans
);
44 transfer
->box
.x
+= trans
->range
.start
;
45 transfer
->box
.width
= trans
->range
.end
- trans
->range
.start
;
46 trans
->offset
= transfer
->box
.x
;
49 if (trans
->copy_src_hw_res
) {
50 virgl_encode_copy_transfer(vctx
, trans
);
51 virgl_resource_destroy_transfer(vctx
, trans
);
53 virgl_transfer_queue_unmap(&vctx
->queue
, trans
);
56 virgl_resource_destroy_transfer(vctx
, trans
);
59 static void virgl_buffer_transfer_flush_region(struct pipe_context
*ctx
,
60 struct pipe_transfer
*transfer
,
61 const struct pipe_box
*box
)
63 struct virgl_transfer
*trans
= virgl_transfer(transfer
);
66 * FIXME: This is not optimal. For example,
68 * glMapBufferRange(.., 0, 100, GL_MAP_FLUSH_EXPLICIT_BIT)
69 * glFlushMappedBufferRange(.., 25, 30)
70 * glFlushMappedBufferRange(.., 65, 70)
72 * We'll end up flushing 25 --> 70.
74 util_range_add(transfer
->resource
, &trans
->range
, box
->x
, box
->x
+ box
->width
);
77 static const struct u_resource_vtbl virgl_buffer_vtbl
=
79 u_default_resource_get_handle
, /* get_handle */
80 virgl_resource_destroy
, /* resource_destroy */
81 virgl_resource_transfer_map
, /* transfer_map */
82 virgl_buffer_transfer_flush_region
, /* transfer_flush_region */
83 virgl_buffer_transfer_unmap
, /* transfer_unmap */
86 void virgl_buffer_init(struct virgl_resource
*res
)
88 res
->u
.vtbl
= &virgl_buffer_vtbl
;