ss_context.c revision 9ac51f57efe07ed43a1e4224a7f5daddec401b36 
1
2/*
3 * Mesa 3-D graphics library
4 * Version:  4.1
5 *
6 * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
7 *
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:
14 *
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
17 *
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.
24 *
25 * Authors:
26 *    Keith Whitwell <keith@tungstengraphics.com>
27 */
28
29#include "glheader.h"
30#include "imports.h"
31#include "ss_context.h"
32#include "ss_triangle.h"
33#include "ss_vb.h"
34#include "swrast_setup.h"
35#include "tnl/tnl.h"
36#include "tnl/t_context.h"
37#include "tnl/t_pipeline.h"
38
39
40#define _SWSETUP_NEW_VERTS (_NEW_RENDERMODE|	\
41                            _NEW_POLYGON|       \
42                            _NEW_LIGHT|         \
43			    _NEW_TEXTURE|	\
44			    _NEW_COLOR|		\
45			    _NEW_FOG|		\
46			    _NEW_POINT)
47
48#define _SWSETUP_NEW_RENDERINDEX (_NEW_POLYGON|_NEW_LIGHT)
49
50
51GLboolean
52_swsetup_CreateContext( GLcontext *ctx )
53{
54   TNLcontext *tnl = TNL_CONTEXT(ctx);
55   SScontext *swsetup = (SScontext *)CALLOC(sizeof(SScontext));
56
57   if (!swsetup)
58      return GL_FALSE;
59
60   swsetup->verts = (SWvertex *) ALIGN_CALLOC( sizeof(SWvertex) * tnl->vb.Size,
61					       32);
62   if (!swsetup->verts) {
63      FREE(swsetup);
64      return GL_FALSE;
65   }
66
67   ctx->swsetup_context = swsetup;
68
69   swsetup->NewState = ~0;
70   _swsetup_vb_init( ctx );
71   _swsetup_trifuncs_init( ctx );
72
73   return GL_TRUE;
74}
75
76void
77_swsetup_DestroyContext( GLcontext *ctx )
78{
79   SScontext *swsetup = SWSETUP_CONTEXT(ctx);
80
81   if (swsetup) {
82      if (swsetup->verts)
83	 ALIGN_FREE(swsetup->verts);
84
85      if (swsetup->ChanSecondaryColor.Ptr)
86	 ALIGN_FREE(swsetup->ChanSecondaryColor.Ptr);
87
88      if (swsetup->ChanColor.Ptr)
89	 ALIGN_FREE(swsetup->ChanColor.Ptr);
90
91      FREE(swsetup);
92      ctx->swsetup_context = 0;
93   }
94}
95
96static void
97_swsetup_RenderPrimitive( GLcontext *ctx, GLenum mode )
98{
99   SWSETUP_CONTEXT(ctx)->render_prim = mode;
100   _swrast_render_primitive( ctx, mode );
101}
102
103/*
104 * We patch this function into tnl->Driver.Render.Start.
105 * It's called when we start rendering a vertex buffer.
106 */
107static void
108_swsetup_RenderStart( GLcontext *ctx )
109{
110   SScontext *swsetup = SWSETUP_CONTEXT(ctx);
111   GLuint new_state = swsetup->NewState;
112
113   if (new_state & _SWSETUP_NEW_RENDERINDEX) {
114      _swsetup_choose_trifuncs( ctx );
115   }
116
117   if (new_state & _SWSETUP_NEW_VERTS) {
118      _swsetup_choose_rastersetup_func( ctx );
119   }
120
121   swsetup->NewState = 0;
122
123   _swrast_render_start( ctx );
124}
125
126/*
127 * We patch this function into tnl->Driver.Render.Finish.
128 * It's called when we finish rendering a vertex buffer.
129 */
130static void
131_swsetup_RenderFinish( GLcontext *ctx )
132{
133   _swrast_render_finish( ctx );
134}
135
136void
137_swsetup_InvalidateState( GLcontext *ctx, GLuint new_state )
138{
139   SScontext *swsetup = SWSETUP_CONTEXT(ctx);
140   swsetup->NewState |= new_state;
141}
142
143
144void
145_swsetup_Wakeup( GLcontext *ctx )
146{
147   TNLcontext *tnl = TNL_CONTEXT(ctx);
148   tnl->Driver.Render.Start = _swsetup_RenderStart;
149   tnl->Driver.Render.Finish = _swsetup_RenderFinish;
150   tnl->Driver.Render.PrimitiveNotify = _swsetup_RenderPrimitive;
151   /* interp */
152   /* copypv */
153   tnl->Driver.Render.ClippedPolygon = _tnl_RenderClippedPolygon; /* new */
154   tnl->Driver.Render.ClippedLine = _tnl_RenderClippedLine; /* new */
155   /* points */
156   /* line */
157   /* triangle */
158   /* quad */
159   tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
160   tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
161   tnl->Driver.Render.ResetLineStipple = _swrast_ResetLineStipple;
162   /* buildvertices */
163   tnl->Driver.Render.Multipass = 0;
164   _tnl_need_projected_coords( ctx, GL_TRUE );
165   _swsetup_InvalidateState( ctx, ~0 );
166}
167