1 /**************************************************************************
3 * Copyright 2011 Marek Olšák <maraeo@gmail.com>
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
31 /* This module takes care of user buffer uploads and vertex format fallbacks.
32 * It's designed for the drivers which don't want to use the Draw module.
33 * There is a more detailed description at the beginning of the .c file.
36 #include "pipe/p_context.h"
37 #include "pipe/p_state.h"
38 #include "pipe/p_format.h"
43 #define U_VBUF_FLAG_NO_USER_VBOS (1 << 0)
45 /* Hardware vertex fetcher limitations can be described by this structure. */
47 enum pipe_format format_translation
[PIPE_FORMAT_COUNT
];
49 /* Whether vertex fetches don't have to be 4-byte-aligned. */
50 /* TRUE if hardware supports it. */
51 unsigned buffer_offset_unaligned
:1;
52 unsigned buffer_stride_unaligned
:1;
53 unsigned velem_src_offset_unaligned
:1;
55 /* Whether the driver supports user vertex buffers. */
56 unsigned user_vertex_buffers
:1;
60 boolean
u_vbuf_get_caps(struct pipe_screen
*screen
, struct u_vbuf_caps
*caps
,
64 u_vbuf_create(struct pipe_context
*pipe
, struct u_vbuf_caps
*caps
);
66 void u_vbuf_destroy(struct u_vbuf
*mgr
);
68 /* State and draw functions. */
69 void u_vbuf_set_vertex_elements(struct u_vbuf
*mgr
, unsigned count
,
70 const struct pipe_vertex_element
*states
);
71 void u_vbuf_set_vertex_buffers(struct u_vbuf
*mgr
,
72 unsigned start_slot
, unsigned count
,
73 const struct pipe_vertex_buffer
*bufs
);
74 void u_vbuf_draw_vbo(struct u_vbuf
*mgr
, const struct pipe_draw_info
*info
);
76 /* Save/restore functionality. */
77 void u_vbuf_save_vertex_elements(struct u_vbuf
*mgr
);
78 void u_vbuf_restore_vertex_elements(struct u_vbuf
*mgr
);
79 void u_vbuf_save_vertex_buffer0(struct u_vbuf
*mgr
);
80 void u_vbuf_restore_vertex_buffer0(struct u_vbuf
*mgr
);