2 * mesa 3-D graphics library
4 * Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
27 * Types, functions, etc which are private to the VBO module.
35 #include "vbo/vbo_attrib.h"
36 #include "vbo/vbo_exec.h"
37 #include "vbo/vbo_save.h"
38 #include "main/varray.h"
39 #include "main/macros.h"
47 struct gl_vertex_buffer_binding binding
;
48 struct gl_array_attributes current
[VBO_ATTRIB_MAX
];
50 struct gl_vertex_array_object
*VAO
;
52 struct vbo_exec_context exec
;
53 struct vbo_save_context save
;
57 static inline struct vbo_context
*
58 vbo_context(struct gl_context
*ctx
)
60 return ctx
->vbo_context
;
64 static inline const struct vbo_context
*
65 vbo_context_const(const struct gl_context
*ctx
)
67 return ctx
->vbo_context
;
72 * Array to apply the fixed function material aliasing map to
73 * an attribute value used in vbo processing inputs to an attribute
74 * as they appear in the vao.
77 _vbo_attribute_alias_map
[VP_MODE_MAX
][VERT_ATTRIB_MAX
];
81 * Return if format is integer. The immediate mode commands only emit floats
82 * for non-integer types, thus everything else is integer.
84 static inline GLboolean
85 vbo_attrtype_to_integer_flag(GLenum format
)
93 case GL_UNSIGNED_INT64_ARB
:
96 unreachable("Bad vertex attribute type");
101 static inline GLboolean
102 vbo_attrtype_to_double_flag(GLenum format
)
107 case GL_UNSIGNED_INT
:
109 case GL_UNSIGNED_INT64_ARB
:
113 unreachable("Bad vertex attribute type");
120 vbo_set_vertex_format(struct gl_vertex_format
* vertex_format
,
121 GLubyte size
, GLenum16 type
)
123 _mesa_set_vertex_format(vertex_format
, size
, type
, GL_RGBA
, GL_FALSE
,
124 vbo_attrtype_to_integer_flag(type
),
125 vbo_attrtype_to_double_flag(type
));
130 * Return default component values for the given format.
131 * The return type is an array of fi_types, because that's how we declare
132 * the vertex storage : floats , integers or unsigned integers.
134 static inline const fi_type
*
135 vbo_get_default_vals_as_union(GLenum format
)
137 static const GLfloat default_float
[4] = { 0, 0, 0, 1 };
138 static const GLint default_int
[4] = { 0, 0, 0, 1 };
139 static const GLdouble default_double
[4] = { 0, 0, 0, 1 };
140 static const uint64_t default_uint64
[4] = { 0, 0, 0, 1 };
144 return (fi_type
*)default_float
;
146 case GL_UNSIGNED_INT
:
147 return (fi_type
*)default_int
;
149 return (fi_type
*)default_double
;
150 case GL_UNSIGNED_INT64_ARB
:
151 return (fi_type
*)default_uint64
;
153 unreachable("Bad vertex format");
160 * Compute the max number of vertices which can be stored in
161 * a vertex buffer, given the current vertex size, and the amount
162 * of space already used.
164 static inline unsigned
165 vbo_compute_max_verts(const struct vbo_exec_context
*exec
)
167 unsigned n
= (exec
->ctx
->Const
.glBeginEndBufferSize
-
168 exec
->vtx
.buffer_used
) /
169 (exec
->vtx
.vertex_size
* sizeof(GLfloat
));
172 /* Subtract one so we're always sure to have room for an extra
173 * vertex for GL_LINE_LOOP -> GL_LINE_STRIP conversion.
181 vbo_try_prim_conversion(struct _mesa_prim
*p
);
184 vbo_merge_draws(struct gl_context
*ctx
, bool in_dlist
,
185 struct _mesa_prim
*p0
, const struct _mesa_prim
*p1
);
188 vbo_copy_vertices(struct gl_context
*ctx
,
190 struct _mesa_prim
*last_prim
,
191 unsigned vertex_size
,
197 * Get the filter mask for vbo draws depending on the vertex_processing_mode.
199 static inline GLbitfield
200 _vbo_get_vao_filter(gl_vertex_processing_mode vertex_processing_mode
)
202 if (vertex_processing_mode
== VP_MODE_FF
) {
203 /* The materials mapped into the generic arrays */
204 return VERT_BIT_FF_ALL
| VERT_BIT_MAT_ALL
;
212 * Translate the bitmask of VBO_ATTRIB_BITs to VERT_ATTRIB_BITS.
213 * Note that position/generic0 attribute aliasing is done
214 * generically in the VAO.
216 static inline GLbitfield
217 _vbo_get_vao_enabled_from_vbo(gl_vertex_processing_mode vertex_processing_mode
,
218 GLbitfield64 enabled
)
220 if (vertex_processing_mode
== VP_MODE_FF
) {
221 /* The materials mapped into the generic arrays */
222 return (((GLbitfield
)enabled
) & VERT_BIT_FF_ALL
)
223 | (((GLbitfield
)(enabled
>> VBO_MATERIAL_SHIFT
)) & VERT_BIT_MAT_ALL
);
225 return ((GLbitfield
)enabled
) & VERT_BIT_ALL
;
231 * Set the vertex attrib for vbo draw use.
234 _vbo_set_attrib_format(struct gl_context
*ctx
,
235 struct gl_vertex_array_object
*vao
,
236 gl_vert_attrib attr
, GLintptr buffer_offset
,
237 GLubyte size
, GLenum16 type
, GLuint offset
)
239 const GLboolean integer
= vbo_attrtype_to_integer_flag(type
);
240 const GLboolean doubles
= vbo_attrtype_to_double_flag(type
);
244 _mesa_update_array_format(ctx
, vao
, attr
, size
, type
, GL_RGBA
,
245 GL_FALSE
, integer
, doubles
, offset
);
246 /* Ptr for userspace arrays.
247 * For updating the pointer we would need to add the vao->NewArrays flag
248 * to the VAO. But but that is done already unconditionally in
249 * _mesa_update_array_format called above.
251 assert((vao
->NewArrays
| ~vao
->Enabled
) & VERT_BIT(attr
));
252 vao
->VertexAttrib
[attr
].Ptr
= ADD_POINTERS(buffer_offset
, offset
);
256 #endif /* VBO_PRIVATE_H */