1 /**************************************************************************
3 * Copyright 2005 Tungsten Graphics, Inc., Cedar Park, Texas.
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 TUNGSTEN GRAPHICS 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 **************************************************************************/
28 #include "swrast_setup/swrast_setup.h"
29 #include "swrast/swrast.h"
33 #include "vbo_context.h"
44 typedef void (*attr_func
)( GLcontext
*ctx
, GLint target
, const GLfloat
* );
47 /* This file makes heavy use of the aliasing of NV vertex attributes
48 * with the legacy attributes.
50 static void VertexAttrib1fvNV(GLcontext
*ctx
, GLint target
, const GLfloat
*v
)
52 CALL_VertexAttrib1fvNV(ctx
->Exec
, (target
, v
));
55 static void VertexAttrib2fvNV(GLcontext
*ctx
, GLint target
, const GLfloat
*v
)
57 CALL_VertexAttrib2fvNV(ctx
->Exec
, (target
, v
));
60 static void VertexAttrib3fvNV(GLcontext
*ctx
, GLint target
, const GLfloat
*v
)
62 CALL_VertexAttrib3fvNV(ctx
->Exec
, (target
, v
));
65 static void VertexAttrib4fvNV(GLcontext
*ctx
, GLint target
, const GLfloat
*v
)
67 CALL_VertexAttrib4fvNV(ctx
->Exec
, (target
, v
));
70 static attr_func vert_attrfunc
[4] = {
77 struct loopback_attr
{
83 /* Don't emit ends and begins on wrapped primitives. Don't replay
84 * wrapped vertices. If we get here, it's probably because the the
85 * precalculated wrapping is wrong.
87 static void loopback_prim( GLcontext
*ctx
,
88 const GLfloat
*buffer
,
89 const struct _mesa_prim
*prim
,
92 const struct loopback_attr
*la
, GLuint nr
)
94 GLint start
= prim
->start
;
95 GLint end
= start
+ prim
->count
;
101 _mesa_printf("loopback prim %s(%s,%s) verts %d..%d\n",
102 _mesa_lookup_enum_by_nr(prim
->mode
),
103 prim
->begin
? "begin" : "..",
104 prim
->end
? "end" : "..",
109 CALL_Begin(GET_DISPATCH(), ( prim
->mode
));
116 data
= buffer
+ start
* vertex_size
;
118 for (j
= start
; j
< end
; j
++) {
119 const GLfloat
*tmp
= data
+ la
[0].sz
;
121 for (k
= 1 ; k
< nr
; k
++) {
122 la
[k
].func( ctx
, la
[k
].target
, tmp
);
128 la
[0].func( ctx
, VBO_ATTRIB_POS
, data
);
133 CALL_End(GET_DISPATCH(), ());
137 /* Primitives generated by DrawArrays/DrawElements/Rectf may be
138 * caught here. If there is no primitive in progress, execute them
139 * normally, otherwise need to track and discard the generated
142 static void loopback_weak_prim( GLcontext
*ctx
,
143 const struct _mesa_prim
*prim
)
145 /* Use the prim_weak flag to ensure that if this primitive
146 * wraps, we don't mistake future vertex_lists for part of the
147 * surrounding primitive.
149 * While this flag is set, we are simply disposing of data
150 * generated by an operation now known to be a noop.
153 ctx
->Driver
.CurrentExecPrimitive
|= VBO_SAVE_PRIM_WEAK
;
155 ctx
->Driver
.CurrentExecPrimitive
&= ~VBO_SAVE_PRIM_WEAK
;
159 void vbo_loopback_vertex_list( GLcontext
*ctx
,
160 const GLfloat
*buffer
,
161 const GLubyte
*attrsz
,
162 const struct _mesa_prim
*prim
,
167 struct loopback_attr la
[VBO_ATTRIB_MAX
];
170 /* All Legacy, NV, ARB and Material attributes are routed through
171 * the NV attributes entrypoints:
173 for (i
= 0 ; i
< VBO_ATTRIB_MAX
; i
++) {
176 la
[nr
].sz
= attrsz
[i
];
177 la
[nr
].func
= vert_attrfunc
[attrsz
[i
]-1];
182 for (i
= 0 ; i
< prim_count
; i
++) {
183 if ((prim
[i
].mode
& VBO_SAVE_PRIM_WEAK
) &&
184 (ctx
->Driver
.CurrentExecPrimitive
!= PRIM_OUTSIDE_BEGIN_END
))
186 loopback_weak_prim( ctx
, &prim
[i
] );
190 loopback_prim( ctx
, buffer
, &prim
[i
], wrap_count
, vertex_size
, la
, nr
);