3 * Mesa 3-D graphics library
6 * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 * Keith Whitwell <keith@tungstengraphics.com>
32 #include "ss_context.h"
33 #include "ss_triangle.h"
34 #include "swrast_setup.h"
36 #include "tnl/t_context.h"
37 #include "tnl/t_pipeline.h"
38 #include "tnl/t_vertex.h"
40 #define _SWSETUP_NEW_RENDERINDEX (_NEW_POLYGON|_NEW_LIGHT)
44 _swsetup_CreateContext( GLcontext
*ctx
)
46 SScontext
*swsetup
= (SScontext
*)CALLOC(sizeof(SScontext
));
51 ctx
->swsetup_context
= swsetup
;
53 swsetup
->NewState
= ~0;
54 _swsetup_trifuncs_init( ctx
);
56 _tnl_init_vertices( ctx
, ctx
->Const
.MaxArrayLockSize
+ 12,
64 _swsetup_DestroyContext( GLcontext
*ctx
)
66 SScontext
*swsetup
= SWSETUP_CONTEXT(ctx
);
70 ctx
->swsetup_context
= 0;
73 _tnl_free_vertices( ctx
);
77 _swsetup_RenderPrimitive( GLcontext
*ctx
, GLenum mode
)
79 SWSETUP_CONTEXT(ctx
)->render_prim
= mode
;
80 _swrast_render_primitive( ctx
, mode
);
83 #define SWZ ((SWvertex *)0)
84 #define SWOffset(MEMBER) (((char *)&(SWZ->MEMBER)) - ((char *)SWZ))
86 #define EMIT_ATTR( ATTR, STYLE, MEMBER ) \
88 map[e].attrib = (ATTR); \
89 map[e].format = (STYLE); \
90 map[e].offset = SWOffset(MEMBER); \
96 * We patch this function into tnl->Driver.Render.Start.
97 * It's called when we start rendering a vertex buffer.
100 _swsetup_RenderStart( GLcontext
*ctx
)
102 SScontext
*swsetup
= SWSETUP_CONTEXT(ctx
);
103 TNLcontext
*tnl
= TNL_CONTEXT(ctx
);
104 struct vertex_buffer
*VB
= &tnl
->vb
;
105 GLuint new_state
= swsetup
->NewState
;
107 if (new_state
& _SWSETUP_NEW_RENDERINDEX
) {
108 _swsetup_choose_trifuncs( ctx
);
111 swsetup
->NewState
= 0;
113 _swrast_render_start( ctx
);
117 VB
->AttribPtr
[VERT_ATTRIB_POS
] = VB
->NdcPtr
;
120 if (tnl
->render_inputs
!= swsetup
->last_index
) {
121 GLuint index
= tnl
->render_inputs
;
122 struct tnl_attr_map map
[_TNL_ATTRIB_MAX
];
125 EMIT_ATTR( _TNL_ATTRIB_POS
, EMIT_4F_VIEWPORT
, win
);
127 if (index
& _TNL_BIT_COLOR0
)
128 EMIT_ATTR( _TNL_ATTRIB_COLOR0
, EMIT_4CHAN_4F_RGBA
, color
);
130 if (index
& _TNL_BIT_COLOR1
)
131 EMIT_ATTR( _TNL_ATTRIB_COLOR1
, EMIT_4CHAN_4F_RGBA
, specular
);
133 if (index
& _TNL_BIT_FOG
)
134 EMIT_ATTR( _TNL_ATTRIB_FOG
, EMIT_1F
, fog
);
136 if (index
& _TNL_BITS_TEX_ANY
) {
137 for (i
= 0; i
< MAX_TEXTURE_COORD_UNITS
; i
++) {
138 if (index
& _TNL_BIT_TEX(i
)) {
139 EMIT_ATTR( _TNL_ATTRIB_TEX0
+i
, EMIT_4F
, texcoord
[i
] );
144 if (index
& _TNL_BIT_INDEX
)
145 EMIT_ATTR( _TNL_ATTRIB_INDEX
, EMIT_1F
, index
);
147 if (index
& _TNL_BIT_POINTSIZE
)
148 EMIT_ATTR( _TNL_ATTRIB_POINTSIZE
, EMIT_1F
, pointSize
);
150 _tnl_install_attrs( ctx
, map
, e
,
151 ctx
->Viewport
._WindowMap
.m
,
154 swsetup
->last_index
= index
;
160 * We patch this function into tnl->Driver.Render.Finish.
161 * It's called when we finish rendering a vertex buffer.
164 _swsetup_RenderFinish( GLcontext
*ctx
)
166 _swrast_render_finish( ctx
);
170 _swsetup_InvalidateState( GLcontext
*ctx
, GLuint new_state
)
172 SScontext
*swsetup
= SWSETUP_CONTEXT(ctx
);
173 swsetup
->NewState
|= new_state
;
174 _tnl_invalidate_vertex_state( ctx
, new_state
);
179 _swsetup_Wakeup( GLcontext
*ctx
)
181 TNLcontext
*tnl
= TNL_CONTEXT(ctx
);
182 SScontext
*swsetup
= SWSETUP_CONTEXT(ctx
);
184 tnl
->Driver
.Render
.Start
= _swsetup_RenderStart
;
185 tnl
->Driver
.Render
.Finish
= _swsetup_RenderFinish
;
186 tnl
->Driver
.Render
.PrimitiveNotify
= _swsetup_RenderPrimitive
;
187 tnl
->Driver
.Render
.Interp
= _tnl_interp
;
188 tnl
->Driver
.Render
.CopyPV
= _tnl_copy_pv
;
189 tnl
->Driver
.Render
.ClippedPolygon
= _tnl_RenderClippedPolygon
; /* new */
190 tnl
->Driver
.Render
.ClippedLine
= _tnl_RenderClippedLine
; /* new */
195 tnl
->Driver
.Render
.PrimTabVerts
= _tnl_render_tab_verts
;
196 tnl
->Driver
.Render
.PrimTabElts
= _tnl_render_tab_elts
;
197 tnl
->Driver
.Render
.ResetLineStipple
= _swrast_ResetLineStipple
;
198 tnl
->Driver
.Render
.BuildVertices
= _tnl_build_vertices
;
199 tnl
->Driver
.Render
.Multipass
= 0;
201 _tnl_invalidate_vertices( ctx
, ~0 );
202 _tnl_need_projected_coords( ctx
, GL_TRUE
);
203 _swsetup_InvalidateState( ctx
, ~0 );
205 swsetup
->verts
= (SWvertex
*)tnl
->clipspace
.vertex_buf
;
206 swsetup
->last_index
= 0;
213 /* Populate a swrast SWvertex from an attrib-style vertex.
216 _swsetup_Translate( GLcontext
*ctx
, const void *vertex
, SWvertex
*dest
)
218 const GLfloat
*m
= ctx
->Viewport
._WindowMap
.m
;
222 _tnl_get_attr( ctx
, vertex
, _TNL_ATTRIB_POS
, tmp
);
224 dest
->win
[0] = m
[0] * tmp
[0] + m
[12];
225 dest
->win
[1] = m
[5] * tmp
[1] + m
[13];
226 dest
->win
[2] = m
[10] * tmp
[2] + m
[15];
227 dest
->win
[3] = tmp
[3];
230 for (i
= 0 ; i
< ctx
->Const
.MaxTextureUnits
; i
++)
231 _tnl_get_attr( ctx
, vertex
, _TNL_ATTRIB_TEX0
+i
, dest
->texcoord
[i
] );
233 _tnl_get_attr( ctx
, vertex
, _TNL_ATTRIB_COLOR0
, tmp
);
234 UNCLAMPED_FLOAT_TO_RGBA_CHAN( dest
->color
, tmp
);
236 _tnl_get_attr( ctx
, vertex
, _TNL_ATTRIB_COLOR1
, tmp
);
237 UNCLAMPED_FLOAT_TO_RGBA_CHAN( dest
->specular
, tmp
);
239 _tnl_get_attr( ctx
, vertex
, _TNL_ATTRIB_FOG
, tmp
);
242 _tnl_get_attr( ctx
, vertex
, _TNL_ATTRIB_INDEX
, tmp
);
243 dest
->index
= (GLuint
) tmp
[0];
245 _tnl_get_attr( ctx
, vertex
, _TNL_ATTRIB_POINTSIZE
, tmp
);
246 dest
->pointSize
= tmp
[0];