1 /**********************************************************
2 * Copyright 2008-2009 VMware, Inc. All rights reserved.
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 **********************************************************/
26 #include "util/u_inlines.h"
27 #include "pipe/p_defines.h"
28 #include "util/u_math.h"
29 #include "tgsi/tgsi_parse.h"
31 #include "svga_context.h"
32 #include "svga_resource_buffer.h"
34 /***********************************************************************
47 static void svga_set_constant_buffer(struct pipe_context
*pipe
,
48 enum pipe_shader_type shader
, uint index
,
49 const struct pipe_constant_buffer
*cb
)
51 struct svga_screen
*svgascreen
= svga_screen(pipe
->screen
);
52 struct svga_context
*svga
= svga_context(pipe
);
53 struct pipe_resource
*buf
= cb
? cb
->buffer
: NULL
;
54 unsigned buffer_size
= 0;
57 buffer_size
= cb
->buffer_size
;
58 if (cb
->user_buffer
) {
59 buf
= svga_user_buffer_create(pipe
->screen
,
60 (void *) cb
->user_buffer
,
62 PIPE_BIND_CONSTANT_BUFFER
);
66 assert(shader
< PIPE_SHADER_TYPES
);
67 assert(index
< ARRAY_SIZE(svga
->curr
.constbufs
[shader
]));
68 assert(index
< svgascreen
->max_const_buffers
);
71 pipe_resource_reference(&svga
->curr
.constbufs
[shader
][index
].buffer
, buf
);
73 /* Make sure the constant buffer size to be updated is within the
74 * limit supported by the device.
76 svga
->curr
.constbufs
[shader
][index
].buffer_size
=
77 MIN2(buffer_size
, SVGA_MAX_CONST_BUF_SIZE
);
79 svga
->curr
.constbufs
[shader
][index
].buffer_offset
= cb
? cb
->buffer_offset
: 0;
80 svga
->curr
.constbufs
[shader
][index
].user_buffer
= NULL
; /* not used */
82 if (shader
== PIPE_SHADER_FRAGMENT
)
83 svga
->dirty
|= SVGA_NEW_FS_CONST_BUFFER
;
84 else if (shader
== PIPE_SHADER_VERTEX
)
85 svga
->dirty
|= SVGA_NEW_VS_CONST_BUFFER
;
87 svga
->dirty
|= SVGA_NEW_GS_CONST_BUFFER
;
89 /* update bitmask of dirty const buffers */
90 svga
->state
.dirty_constbufs
[shader
] |= (1 << index
);
92 if (cb
&& cb
->user_buffer
) {
93 pipe_resource_reference(&buf
, NULL
);
99 void svga_init_constbuffer_functions( struct svga_context
*svga
)
101 svga
->pipe
.set_constant_buffer
= svga_set_constant_buffer
;