1 /**************************************************************************
3 Copyright 2002 VMware, Inc.
7 Permission is hereby granted, free of charge, to any person obtaining a
8 copy of this software and associated documentation files (the "Software"),
9 to deal in the Software without restriction, including without limitation
10 on the rights to use, copy, modify, merge, publish, distribute, sub
11 license, and/or sell copies of the Software, and to permit persons to whom
12 the Software is furnished to do so, subject to the following conditions:
14 The above copyright notice and this permission notice (including the next
15 paragraph) shall be included in all copies or substantial portions of the
18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21 VMWARE AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
22 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
30 * Keith Whitwell <keithw@vmware.com>
37 #include "main/mtypes.h"
39 #include "vbo_attrib.h"
42 struct vbo_save_copied_vtx
{
43 fi_type buffer
[VBO_ATTRIB_MAX
* 4 * VBO_MAX_COPIED_VERTS
];
48 /* For display lists, this structure holds a run of vertices of the
49 * same format, and a strictly well-formed set of begin/end pairs,
50 * starting on the first vertex and ending at the last. Vertex
51 * copying on buffer breaks is precomputed according to these
52 * primitives, though there are situations where the copying will need
53 * correction at execute-time, perhaps by replaying the list as
54 * immediate mode commands.
56 * On executing this list, the 'current' values may be updated with
57 * the values of the final vertex, and often no fixup of the start of
58 * the vertex list is required.
60 * Eval and other commands that don't fit into these vertex lists are
61 * compiled using the fallback opcode mechanism provided by dlist.c.
63 struct vbo_save_vertex_list
{
64 GLbitfield64 enabled
; /**< mask of enabled vbo arrays. */
65 GLubyte attrsz
[VBO_ATTRIB_MAX
];
66 GLenum attrtype
[VBO_ATTRIB_MAX
];
67 GLuint vertex_size
; /**< size in GLfloats */
69 /* Copy of the final vertex from node->vertex_store->bufferobj.
70 * Keep this in regular (non-VBO) memory to avoid repeated
71 * map/unmap of the VBO when updating GL current data.
73 fi_type
*current_data
;
78 GLuint wrap_count
; /* number of copied vertices at start */
79 GLboolean dangling_attr_ref
; /* current attr implicitly referenced
82 struct _mesa_prim
*prims
;
85 struct vbo_save_vertex_store
*vertex_store
;
86 struct vbo_save_primitive_store
*prim_store
;
89 /* These buffers should be a reasonable size to support upload to
90 * hardware. Current vbo implementation will re-upload on any
91 * changes, so don't make too big or apps which dynamically create
92 * dlists and use only a few times will suffer.
94 * Consider stategy of uploading regions from the VBO on demand in the
95 * case of dynamic vbos. Then make the dlist code signal that
96 * likelyhood as it occurs. No reason we couldn't change usage
97 * internally even though this probably isn't allowed for client VBOs?
99 #define VBO_SAVE_BUFFER_SIZE (256*1024) /* dwords */
100 #define VBO_SAVE_PRIM_SIZE 128
101 #define VBO_SAVE_PRIM_MODE_MASK 0x3f
102 #define VBO_SAVE_PRIM_WEAK 0x40
103 #define VBO_SAVE_PRIM_NO_CURRENT_UPDATE 0x80
105 #define VBO_SAVE_FALLBACK 0x10000000
107 /* Storage to be shared among several vertex_lists.
109 struct vbo_save_vertex_store
{
110 struct gl_buffer_object
*bufferobj
;
116 struct vbo_save_primitive_store
{
117 struct _mesa_prim prims
[VBO_SAVE_PRIM_SIZE
];
123 struct vbo_save_context
{
124 struct gl_context
*ctx
;
125 GLvertexformat vtxfmt
;
126 GLvertexformat vtxfmt_noop
; /**< Used if out_of_memory is true */
127 struct gl_vertex_array arrays
[VBO_ATTRIB_MAX
];
128 const struct gl_vertex_array
*inputs
[VBO_ATTRIB_MAX
];
130 GLbitfield64 enabled
; /**< mask of enabled vbo arrays. */
131 GLubyte attrsz
[VBO_ATTRIB_MAX
]; /**< 1, 2, 3 or 4 */
132 GLenum attrtype
[VBO_ATTRIB_MAX
]; /**< GL_FLOAT, GL_INT, etc */
133 GLubyte active_sz
[VBO_ATTRIB_MAX
]; /**< 1, 2, 3 or 4 */
134 GLuint vertex_size
; /**< size in GLfloats */
136 GLboolean out_of_memory
; /**< True if last VBO allocation failed */
139 GLbitfield replay_flags
;
141 struct _mesa_prim
*prims
;
142 GLuint prim_count
, prim_max
;
144 struct vbo_save_vertex_store
*vertex_store
;
145 struct vbo_save_primitive_store
*prim_store
;
147 fi_type
*buffer_map
; /**< Mapping of vertex_store's buffer */
148 fi_type
*buffer_ptr
; /**< cursor, points into buffer_map */
149 fi_type vertex
[VBO_ATTRIB_MAX
*4]; /* current values */
150 fi_type
*attrptr
[VBO_ATTRIB_MAX
];
153 GLboolean dangling_attr_ref
;
155 GLuint opcode_vertex_list
;
157 struct vbo_save_copied_vtx copied
;
159 fi_type
*current
[VBO_ATTRIB_MAX
]; /* points into ctx->ListState */
160 GLubyte
*currentsz
[VBO_ATTRIB_MAX
];
163 void vbo_save_init(struct gl_context
*ctx
);
164 void vbo_save_destroy(struct gl_context
*ctx
);
165 void vbo_save_fallback(struct gl_context
*ctx
, GLboolean fallback
);
169 void vbo_loopback_vertex_list(struct gl_context
*ctx
,
170 const GLfloat
*buffer
,
171 const GLubyte
*attrsz
,
172 const struct _mesa_prim
*prim
,
180 vbo_save_playback_vertex_list(struct gl_context
*ctx
, void *data
);
183 vbo_save_api_init(struct vbo_save_context
*save
);
186 vbo_save_map_vertex_store(struct gl_context
*ctx
,
187 struct vbo_save_vertex_store
*vertex_store
);
190 vbo_save_unmap_vertex_store(struct gl_context
*ctx
,
191 struct vbo_save_vertex_store
*vertex_store
);
193 #endif /* VBO_SAVE_H */