1/**************************************************************************
2 *
3 * Copyright 2011 Marek Olšák <maraeo@gmail.com>
4 * All Rights Reserved.
5 *
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:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
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.
25 *
26 **************************************************************************/
27
28#ifndef U_VBUF_H
29#define U_VBUF_H
30
31/* This module builds upon u_upload_mgr and translate_cache and takes care of
32 * user buffer uploads and vertex format fallbacks. It's designed
33 * for the drivers which don't always use the Draw module. (e.g. for HWTCL)
34 */
35
36#include "pipe/p_context.h"
37#include "pipe/p_state.h"
38
39struct cso_context;
40struct u_vbuf;
41
42/* Hardware vertex fetcher limitations can be described by this structure. */
43struct u_vbuf_caps {
44   /* Vertex format CAPs. */
45   /* TRUE if hardware supports it. */
46   unsigned format_fixed32:1;    /* PIPE_FORMAT_*32*_FIXED */
47   unsigned format_float16:1;    /* PIPE_FORMAT_*16*_FLOAT */
48   unsigned format_float64:1;    /* PIPE_FORMAT_*64*_FLOAT */
49   unsigned format_norm32:1;     /* PIPE_FORMAT_*32*NORM */
50   unsigned format_scaled32:1;   /* PIPE_FORMAT_*32*SCALED */
51
52   /* Whether vertex fetches don't have to be 4-byte-aligned. */
53   /* TRUE if hardware supports it. */
54   unsigned buffer_offset_unaligned:1;
55   unsigned buffer_stride_unaligned:1;
56   unsigned velem_src_offset_unaligned:1;
57
58   /* Whether the driver supports user vertex buffers. */
59   unsigned user_vertex_buffers:1;
60};
61
62
63void u_vbuf_get_caps(struct pipe_screen *screen, struct u_vbuf_caps *caps);
64
65struct u_vbuf *
66u_vbuf_create(struct pipe_context *pipe,
67              struct u_vbuf_caps *caps);
68
69void u_vbuf_destroy(struct u_vbuf *mgr);
70
71/* State and draw functions. */
72void u_vbuf_set_vertex_elements(struct u_vbuf *mgr, unsigned count,
73                                const struct pipe_vertex_element *states);
74void u_vbuf_set_vertex_buffers(struct u_vbuf *mgr, unsigned count,
75                               const struct pipe_vertex_buffer *bufs);
76void u_vbuf_set_index_buffer(struct u_vbuf *mgr,
77                             const struct pipe_index_buffer *ib);
78void u_vbuf_draw_vbo(struct u_vbuf *mgr, const struct pipe_draw_info *info);
79
80/* Save/restore functionality. */
81void u_vbuf_save_vertex_elements(struct u_vbuf *mgr);
82void u_vbuf_restore_vertex_elements(struct u_vbuf *mgr);
83void u_vbuf_save_vertex_buffers(struct u_vbuf *mgr);
84void u_vbuf_restore_vertex_buffers(struct u_vbuf *mgr);
85
86#endif
87