2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 * Keith Whitwell <keith@tungstengraphics.com>
31 #include "ss_context.h"
32 #include "ss_triangle.h"
33 #include "swrast_setup.h"
35 #include "tnl/t_context.h"
36 #include "tnl/t_pipeline.h"
37 #include "tnl/t_vertex.h"
39 /* Need to check lighting state and vertex program state to know
40 * if two-sided lighting is in effect.
42 #define _SWSETUP_NEW_RENDERINDEX (_NEW_POLYGON|_NEW_LIGHT|_NEW_PROGRAM)
46 _swsetup_CreateContext( GLcontext
*ctx
)
48 SScontext
*swsetup
= (SScontext
*)CALLOC(sizeof(SScontext
));
53 ctx
->swsetup_context
= swsetup
;
55 swsetup
->NewState
= ~0;
56 _swsetup_trifuncs_init( ctx
);
58 _tnl_init_vertices( ctx
, ctx
->Const
.MaxArrayLockSize
+ 12,
66 _swsetup_DestroyContext( GLcontext
*ctx
)
68 SScontext
*swsetup
= SWSETUP_CONTEXT(ctx
);
72 ctx
->swsetup_context
= 0;
75 _tnl_free_vertices( ctx
);
79 _swsetup_RenderPrimitive( GLcontext
*ctx
, GLenum mode
)
81 SWSETUP_CONTEXT(ctx
)->render_prim
= mode
;
82 _swrast_render_primitive( ctx
, mode
);
85 #define SWZ ((SWvertex *)0)
86 #define SWOffset(MEMBER) (((char *)&(SWZ->MEMBER)) - ((char *)SWZ))
88 #define EMIT_ATTR( ATTR, STYLE, MEMBER ) \
90 map[e].attrib = (ATTR); \
91 map[e].format = (STYLE); \
92 map[e].offset = SWOffset(MEMBER); \
98 * We patch this function into tnl->Driver.Render.Start.
99 * It's called when we start rendering a vertex buffer.
102 _swsetup_RenderStart( GLcontext
*ctx
)
104 SScontext
*swsetup
= SWSETUP_CONTEXT(ctx
);
105 TNLcontext
*tnl
= TNL_CONTEXT(ctx
);
106 struct vertex_buffer
*VB
= &tnl
->vb
;
107 GLuint new_state
= swsetup
->NewState
;
109 if (new_state
& _SWSETUP_NEW_RENDERINDEX
) {
110 _swsetup_choose_trifuncs( ctx
);
113 swsetup
->NewState
= 0;
115 _swrast_render_start( ctx
);
119 VB
->AttribPtr
[VERT_ATTRIB_POS
] = VB
->NdcPtr
;
122 if (tnl
->render_inputs
!= swsetup
->last_index
) {
123 GLuint index
= tnl
->render_inputs
;
124 struct tnl_attr_map map
[_TNL_ATTRIB_MAX
];
127 EMIT_ATTR( _TNL_ATTRIB_POS
, EMIT_4F_VIEWPORT
, win
);
129 if (index
& _TNL_BIT_COLOR0
)
130 EMIT_ATTR( _TNL_ATTRIB_COLOR0
, EMIT_4CHAN_4F_RGBA
, color
);
132 if (index
& _TNL_BIT_COLOR1
)
133 EMIT_ATTR( _TNL_ATTRIB_COLOR1
, EMIT_4CHAN_4F_RGBA
, specular
);
135 if (index
& _TNL_BIT_FOG
)
136 EMIT_ATTR( _TNL_ATTRIB_FOG
, EMIT_1F
, fog
);
138 if (index
& _TNL_BITS_TEX_ANY
) {
139 for (i
= 0; i
< MAX_TEXTURE_COORD_UNITS
; i
++) {
140 if (index
& _TNL_BIT_TEX(i
)) {
141 EMIT_ATTR( _TNL_ATTRIB_TEX0
+i
, EMIT_4F
, texcoord
[i
] );
146 if (index
& _TNL_BIT_INDEX
)
147 EMIT_ATTR( _TNL_ATTRIB_INDEX
, EMIT_1F
, index
);
149 if (index
& _TNL_BIT_POINTSIZE
)
150 EMIT_ATTR( _TNL_ATTRIB_POINTSIZE
, EMIT_1F
, pointSize
);
152 _tnl_install_attrs( ctx
, map
, e
,
153 ctx
->Viewport
._WindowMap
.m
,
156 swsetup
->last_index
= index
;
162 * We patch this function into tnl->Driver.Render.Finish.
163 * It's called when we finish rendering a vertex buffer.
166 _swsetup_RenderFinish( GLcontext
*ctx
)
168 _swrast_render_finish( ctx
);
172 _swsetup_InvalidateState( GLcontext
*ctx
, GLuint new_state
)
174 SScontext
*swsetup
= SWSETUP_CONTEXT(ctx
);
175 swsetup
->NewState
|= new_state
;
176 _tnl_invalidate_vertex_state( ctx
, new_state
);
181 _swsetup_Wakeup( GLcontext
*ctx
)
183 TNLcontext
*tnl
= TNL_CONTEXT(ctx
);
184 SScontext
*swsetup
= SWSETUP_CONTEXT(ctx
);
186 tnl
->Driver
.Render
.Start
= _swsetup_RenderStart
;
187 tnl
->Driver
.Render
.Finish
= _swsetup_RenderFinish
;
188 tnl
->Driver
.Render
.PrimitiveNotify
= _swsetup_RenderPrimitive
;
189 tnl
->Driver
.Render
.Interp
= _tnl_interp
;
190 tnl
->Driver
.Render
.CopyPV
= _tnl_copy_pv
;
191 tnl
->Driver
.Render
.ClippedPolygon
= _tnl_RenderClippedPolygon
; /* new */
192 tnl
->Driver
.Render
.ClippedLine
= _tnl_RenderClippedLine
; /* new */
197 tnl
->Driver
.Render
.PrimTabVerts
= _tnl_render_tab_verts
;
198 tnl
->Driver
.Render
.PrimTabElts
= _tnl_render_tab_elts
;
199 tnl
->Driver
.Render
.ResetLineStipple
= _swrast_ResetLineStipple
;
200 tnl
->Driver
.Render
.BuildVertices
= _tnl_build_vertices
;
201 tnl
->Driver
.Render
.Multipass
= 0;
203 _tnl_invalidate_vertices( ctx
, ~0 );
204 _tnl_need_projected_coords( ctx
, GL_TRUE
);
205 _swsetup_InvalidateState( ctx
, ~0 );
207 swsetup
->verts
= (SWvertex
*)tnl
->clipspace
.vertex_buf
;
208 swsetup
->last_index
= 0;
215 /* Populate a swrast SWvertex from an attrib-style vertex.
218 _swsetup_Translate( GLcontext
*ctx
, const void *vertex
, SWvertex
*dest
)
220 const GLfloat
*m
= ctx
->Viewport
._WindowMap
.m
;
224 _tnl_get_attr( ctx
, vertex
, _TNL_ATTRIB_POS
, tmp
);
226 dest
->win
[0] = m
[0] * tmp
[0] + m
[12];
227 dest
->win
[1] = m
[5] * tmp
[1] + m
[13];
228 dest
->win
[2] = m
[10] * tmp
[2] + m
[14];
229 dest
->win
[3] = tmp
[3];
232 for (i
= 0 ; i
< ctx
->Const
.MaxTextureUnits
; i
++)
233 _tnl_get_attr( ctx
, vertex
, _TNL_ATTRIB_TEX0
+i
, dest
->texcoord
[i
] );
235 _tnl_get_attr( ctx
, vertex
, _TNL_ATTRIB_COLOR0
, tmp
);
236 UNCLAMPED_FLOAT_TO_RGBA_CHAN( dest
->color
, tmp
);
238 _tnl_get_attr( ctx
, vertex
, _TNL_ATTRIB_COLOR1
, tmp
);
239 UNCLAMPED_FLOAT_TO_RGBA_CHAN( dest
->specular
, tmp
);
241 _tnl_get_attr( ctx
, vertex
, _TNL_ATTRIB_FOG
, tmp
);
244 _tnl_get_attr( ctx
, vertex
, _TNL_ATTRIB_INDEX
, tmp
);
245 dest
->index
= (GLuint
) tmp
[0];
247 _tnl_get_attr( ctx
, vertex
, _TNL_ATTRIB_POINTSIZE
, tmp
);
248 dest
->pointSize
= tmp
[0];