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 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)
36 #include "pipe/p_context.h"
37 #include "pipe/p_state.h"
38 #include "util/u_transfer.h"
41 * This structure should also be used to access vertex buffers
44 /* This is what was set in set_vertex_buffers.
45 * May contain user buffers. */
46 struct pipe_vertex_buffer vertex_buffer[PIPE_MAX_ATTRIBS];
47 unsigned nr_vertex_buffers;
49 /* Contains only real vertex buffers.
50 * Hardware drivers should use real_vertex_buffers[i]
51 * instead of vertex_buffers[i].buffer. */
52 struct pipe_vertex_buffer real_vertex_buffer[PIPE_MAX_ATTRIBS];
53 int nr_real_vertex_buffers;
55 /* Precomputed max_index for hardware vertex buffers. */
58 /* This uploader can optionally be used by the driver.
65 struct u_upload_mgr *uploader;
68 struct u_vbuf_resource {
73 /* Opaque type containing information about vertex elements for the manager. */
74 struct u_vbuf_elements;
76 enum u_fetch_alignment {
77 U_VERTEX_FETCH_BYTE_ALIGNED,
78 U_VERTEX_FETCH_DWORD_ALIGNED
81 enum u_vbuf_return_flags {
82 U_VBUF_BUFFERS_UPDATED = 1
87 u_vbuf_create(struct pipe_context *pipe,
88 unsigned upload_buffer_size,
89 unsigned upload_buffer_alignment,
90 unsigned upload_buffer_bind,
91 enum u_fetch_alignment fetch_alignment);
93 void u_vbuf_destroy(struct u_vbuf_mgr *mgr);
95 struct u_vbuf_elements *
96 u_vbuf_create_vertex_elements(struct u_vbuf_mgr *mgr,
98 const struct pipe_vertex_element *attrs,
99 struct pipe_vertex_element *native_attrs);
101 void u_vbuf_bind_vertex_elements(struct u_vbuf_mgr *mgr,
103 struct u_vbuf_elements *ve);
105 void u_vbuf_destroy_vertex_elements(struct u_vbuf_mgr *mgr,
106 struct u_vbuf_elements *ve);
108 void u_vbuf_set_vertex_buffers(struct u_vbuf_mgr *mgr,
110 const struct pipe_vertex_buffer *bufs);
112 enum u_vbuf_return_flags u_vbuf_draw_begin(struct u_vbuf_mgr *mgr,
113 const struct pipe_draw_info *info);
115 void u_vbuf_draw_end(struct u_vbuf_mgr *mgr);
118 static INLINE struct u_vbuf_resource *u_vbuf_resource(struct pipe_resource *r)
120 return (struct u_vbuf_resource*)r;