ss_context.c revision 7c20642b1091df1aab7d9076a3fe2fb11c6f011c 
1/* $Id: ss_context.c,v 1.1 2000/11/05 18:20:18 keithw Exp $ */
2
3/*
4 * Mesa 3-D graphics library
5 * Version:  3.5
6 *
7 * Copyright (C) 1999  Brian Paul   All Rights Reserved.
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice shall be included
17 * in all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
22 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
23 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
24 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 * Authors:
27 *    Keith Whitwell <keithw@valinux.com>
28 */
29
30
31#include "glheader.h"
32#include "mem.h"
33
34
35#include "ss_context.h"
36#include "ss_triangle.h"
37#include "ss_vb.h"
38
39#include "swrast_setup.h"
40
41
42/* Stub for swsetup->Triangle to select a true triangle function
43 * after a state change.
44 */
45static void
46_swsetup_validate_quad( GLcontext *ctx, GLuint v0, GLuint v1,
47			GLuint v2, GLuint v3, GLuint pv )
48{
49   _swsetup_choose_trifuncs( ctx );
50   SWSETUP_CONTEXT(ctx)->Quad( ctx, v0, v1, v2, v3, pv );
51}
52
53static void
54_swsetup_validate_triangle( GLcontext *ctx, GLuint v0, GLuint v1,
55			    GLuint v2, GLuint pv )
56{
57   _swsetup_choose_trifuncs( ctx );
58   SWSETUP_CONTEXT(ctx)->Triangle( ctx, v0, v1, v2, pv );
59}
60
61static void
62_swsetup_validate_line( GLcontext *ctx, GLuint v0, GLuint v1, GLuint pv )
63{
64   _swsetup_choose_trifuncs( ctx );
65   SWSETUP_CONTEXT(ctx)->Line( ctx, v0, v1, pv );
66}
67
68
69static void
70_swsetup_validate_points( GLcontext *ctx, GLuint first, GLuint last )
71{
72   _swsetup_choose_trifuncs( ctx );
73   SWSETUP_CONTEXT(ctx)->Points( ctx, first, last );
74}
75
76
77
78static void
79_swsetup_validate_rastersetup( struct vertex_buffer *VB,
80			       GLuint start, GLuint end )
81{
82   GLcontext *ctx = VB->ctx;
83   _swsetup_choose_rastersetup_func( ctx );
84   SWSETUP_CONTEXT(ctx)->RasterSetup( VB, start, end );
85}
86
87
88#define _SWSETUP_NEW_RASTERSETUP (_NEW_RENDERMODE|	\
89			          _NEW_TEXTURE|		\
90			          _NEW_COLOR|		\
91			          _NEW_FOG|		\
92			          _NEW_POINT)
93
94#define _SWSETUP_NEW_RENDERINDEX (_NEW_POLYGON|_NEW_LIGHT)
95
96
97#if 0
98/* TODO: sleep/wakeup mechanism
99 */
100static void
101_swsetup_sleep( GLcontext *ctx, GLuint new_state )
102{
103}
104#endif
105
106static void
107_swsetup_invalidate_state( GLcontext *ctx, GLuint new_state )
108{
109   SScontext *swsetup = SWSETUP_CONTEXT(ctx);
110
111   swsetup->NewState |= new_state;
112
113
114   if (new_state & _SWSETUP_NEW_RENDERINDEX) {
115      swsetup->Triangle = _swsetup_validate_triangle;
116      swsetup->Line = _swsetup_validate_line;
117      swsetup->Points = _swsetup_validate_points;
118      swsetup->Quad = _swsetup_validate_quad;
119   }
120
121   if (new_state & _SWSETUP_NEW_RASTERSETUP) {
122      swsetup->RasterSetup = _swsetup_validate_rastersetup;
123   }
124}
125
126
127
128/* Dispatch from these fixed entrypoints to the state-dependent
129 * functions:
130 */
131void
132_swsetup_Quad( GLcontext *ctx, GLuint v0, GLuint v1,
133	       GLuint v2, GLuint v3, GLuint pv )
134{
135   SWSETUP_CONTEXT(ctx)->Quad( ctx, v0, v1, v2, v3, pv );
136}
137
138void
139_swsetup_Triangle( GLcontext *ctx, GLuint v0, GLuint v1,
140		   GLuint v2, GLuint pv )
141{
142   SWSETUP_CONTEXT(ctx)->Triangle( ctx, v0, v1, v2, pv );
143}
144
145void
146_swsetup_Line( GLcontext *ctx, GLuint v0, GLuint v1, GLuint pv )
147{
148   SWSETUP_CONTEXT(ctx)->Line( ctx, v0, v1, pv );
149}
150
151
152void
153_swsetup_Points( GLcontext *ctx, GLuint first, GLuint last )
154{
155   SWSETUP_CONTEXT(ctx)->Points( ctx, first, last );
156}
157
158void
159_swsetup_RasterSetup( struct vertex_buffer *VB, GLuint start, GLuint end )
160{
161   SWSETUP_CONTEXT(VB->ctx)->RasterSetup( VB, start, end );
162}
163
164void
165_swsetup_InvalidateState( GLcontext *ctx, GLuint new_state )
166{
167   SWSETUP_CONTEXT(ctx)->InvalidateState( ctx, new_state );
168}
169
170
171GLboolean
172_swsetup_CreateContext( GLcontext *ctx )
173{
174   SScontext *swsetup = (SScontext *)CALLOC(sizeof(SScontext));
175
176   if (!swsetup)
177      return GL_FALSE;
178
179   ctx->swsetup_context = swsetup;
180
181   swsetup->NewState = ~0;
182   swsetup->InvalidateState = _swsetup_invalidate_state;
183   swsetup->Quad = _swsetup_validate_quad;
184   swsetup->Triangle = _swsetup_validate_triangle;
185   swsetup->Line = _swsetup_validate_line;
186   swsetup->Points = _swsetup_validate_points;
187   swsetup->RasterSetup = _swsetup_validate_rastersetup;
188
189   _swsetup_vb_init( ctx );
190   _swsetup_trifuncs_init( ctx );
191
192   return GL_TRUE;
193}
194
195void
196_swsetup_DestroyContext( GLcontext *ctx )
197{
198   if (SWSETUP_CONTEXT(ctx)) {
199      FREE(SWSETUP_CONTEXT(ctx));
200      ctx->swsetup_context = 0;
201   }
202}
203
204GLboolean
205_swsetup_RegisterVB( struct vertex_buffer *VB )
206{
207   SSvertexbuffer *ssvb = (SSvertexbuffer *)CALLOC(sizeof(SSvertexbuffer) );
208
209   ssvb->verts = ALIGN_MALLOC( sizeof(SWvertex) * VB->Size, 32);
210   if (!ssvb->verts) {
211      FREE(ssvb);
212      return GL_FALSE;
213   }
214
215   VB->swsetup_vb = ssvb;
216   return GL_TRUE;
217}
218
219
220void
221_swsetup_UnregisterVB( struct vertex_buffer *VB )
222{
223   SSvertexbuffer *ssvb = SWSETUP_VB(VB);
224
225   if (ssvb) {
226      if (ssvb->verts) ALIGN_FREE(ssvb->verts);
227      FREE(ssvb);
228      VB->swsetup_vb = 0;
229   }
230}
231