aboutsummaryrefslogtreecommitdiff
path: root/nx-X11/extras/Mesa/src/mesa/tnl/t_context.c
blob: 3be8f8dd3c9248bac2e884df09a2d858bea82c4e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
/*
 * Mesa 3-D graphics library
 * Version:  6.3
 *
 * Copyright (C) 1999-2005  Brian Paul   All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors:
 *    Keith Whitwell <keith@tungstengraphics.com>
 */


#include "api_arrayelt.h"
#include "glheader.h"
#include "imports.h"
#include "context.h"
#include "macros.h"
#include "mtypes.h"
#include "dlist.h"
#include "light.h"
#include "vtxfmt.h"
#include "nvfragprog.h"

#include "tnl.h"
#include "t_array_api.h"
#include "t_context.h"
#include "t_pipeline.h"
#include "t_save_api.h"
#include "t_vp_build.h"
#include "t_vtx_api.h"



void
_tnl_MakeCurrent( GLcontext *ctx,
		  GLframebuffer *drawBuffer,
		  GLframebuffer *readBuffer )
{
   (void) ctx; (void) drawBuffer; (void) readBuffer;
}


static void
install_driver_callbacks( GLcontext *ctx )
{
   ctx->Driver.NewList = _tnl_NewList;
   ctx->Driver.EndList = _tnl_EndList;
   ctx->Driver.FlushVertices = _tnl_FlushVertices;
   ctx->Driver.SaveFlushVertices = _tnl_SaveFlushVertices;
   ctx->Driver.MakeCurrent = _tnl_MakeCurrent;
   ctx->Driver.BeginCallList = _tnl_BeginCallList;
   ctx->Driver.EndCallList = _tnl_EndCallList;
}



GLboolean
_tnl_CreateContext( GLcontext *ctx )
{
   TNLcontext *tnl;

   /* Create the TNLcontext structure
    */
   ctx->swtnl_context = tnl = (TNLcontext *) CALLOC( sizeof(TNLcontext) );

   if (!tnl) {
      return GL_FALSE;
   }

   if (getenv("MESA_CODEGEN"))
      tnl->AllowCodegen = GL_TRUE;

   /* Initialize the VB.
    */
   tnl->vb.Size = ctx->Const.MaxArrayLockSize + MAX_CLIPPED_VERTICES;


   /* Initialize tnl state and tnl->vtxfmt.
    */
   _tnl_save_init( ctx );
   _tnl_array_init( ctx );
   _tnl_vtx_init( ctx );

   if (ctx->_MaintainTnlProgram) 
      _tnl_install_pipeline( ctx, _tnl_vp_pipeline );
   else 
      _tnl_install_pipeline( ctx, _tnl_default_pipeline );

   /* Initialize the arrayelt helper
    */
   if (!_ae_create_context( ctx ))
      return GL_FALSE;


   tnl->NeedNdcCoords = GL_TRUE;
   tnl->LoopbackDListCassettes = GL_FALSE;
   tnl->CalcDListNormalLengths = GL_TRUE;
   tnl->AllowVertexFog = GL_TRUE;
   tnl->AllowPixelFog = GL_TRUE;

   /* Hook our functions into exec and compile dispatch tables.
    */
   _mesa_install_exec_vtxfmt( ctx, &tnl->exec_vtxfmt );


   /* Set a few default values in the driver struct.
    */
   install_driver_callbacks(ctx);
   ctx->Driver.NeedFlush = 0;
   ctx->Driver.CurrentExecPrimitive = PRIM_OUTSIDE_BEGIN_END;
   ctx->Driver.CurrentSavePrimitive = PRIM_UNKNOWN;

   tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
   tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
   tnl->Driver.NotifyMaterialChange = _mesa_validate_all_lighting_tables;

   return GL_TRUE;
}


void
_tnl_DestroyContext( GLcontext *ctx )
{
   TNLcontext *tnl = TNL_CONTEXT(ctx);

   _tnl_array_destroy( ctx );
   _tnl_vtx_destroy( ctx );
   _tnl_save_destroy( ctx );
   _tnl_destroy_pipeline( ctx );
   _ae_destroy_context( ctx );

   _tnl_ProgramCacheDestroy( ctx );

   FREE(tnl);
   ctx->swtnl_context = NULL;
}


void
_tnl_InvalidateState( GLcontext *ctx, GLuint new_state )
{
   TNLcontext *tnl = TNL_CONTEXT(ctx);

   if (new_state & (_NEW_HINT)) {
      ASSERT(tnl->AllowVertexFog || tnl->AllowPixelFog);
      tnl->_DoVertexFog = (tnl->AllowVertexFog && (ctx->Hint.Fog != GL_NICEST))
         || !tnl->AllowPixelFog;
   }

   _ae_invalidate_state(ctx, new_state);

   tnl->pipeline.new_state |= new_state;
   tnl->vtx.eval.new_state |= new_state;

   /* Calculate tnl->render_inputs:
    */
   if (ctx->Visual.rgbMode) {
      tnl->render_inputs = (_TNL_BIT_POS|
			    _TNL_BIT_COLOR0|
			    (ctx->Texture._EnabledCoordUnits << _TNL_ATTRIB_TEX0));

      if (NEED_SECONDARY_COLOR(ctx))
	 tnl->render_inputs |= _TNL_BIT_COLOR1;
   }
   else {
      tnl->render_inputs |= (_TNL_BIT_POS|_TNL_BIT_INDEX);
   }
    
   if (ctx->Fog.Enabled ||
       (ctx->FragmentProgram._Active &&
        ctx->FragmentProgram._Current->FogOption != GL_NONE))
      tnl->render_inputs |= _TNL_BIT_FOG;

   if (ctx->Polygon.FrontMode != GL_FILL || 
       ctx->Polygon.BackMode != GL_FILL)
      tnl->render_inputs |= _TNL_BIT_EDGEFLAG;

   if (ctx->RenderMode == GL_FEEDBACK)
      tnl->render_inputs |= _TNL_BIT_TEX0;

   if (ctx->Point._Attenuated ||
       (ctx->VertexProgram._Enabled && ctx->VertexProgram.PointSizeEnabled))
      tnl->render_inputs |= _TNL_BIT_POINTSIZE;
}


void
_tnl_wakeup_exec( GLcontext *ctx )
{
   TNLcontext *tnl = TNL_CONTEXT(ctx);

   install_driver_callbacks(ctx);
   ctx->Driver.NeedFlush |= FLUSH_UPDATE_CURRENT;

   /* Hook our functions into exec and compile dispatch tables.
    */
   _mesa_install_exec_vtxfmt( ctx, &tnl->exec_vtxfmt );

   /* Call all appropriate driver callbacks to revive state.
    */
   _tnl_MakeCurrent( ctx, ctx->DrawBuffer, ctx->ReadBuffer );

   /* Assume we haven't been getting state updates either:
    */
   _tnl_InvalidateState( ctx, ~0 );

   if (ctx->Light.ColorMaterialEnabled) {
      _mesa_update_color_material( ctx, 
				   ctx->Current.Attrib[VERT_ATTRIB_COLOR0] );
   }
}


void
_tnl_wakeup_save_exec( GLcontext *ctx )
{
   TNLcontext *tnl = TNL_CONTEXT(ctx);

   _tnl_wakeup_exec( ctx );
   _mesa_install_save_vtxfmt( ctx, &tnl->save_vtxfmt );
}


/**
 * Drivers call this function to tell the TCL module whether or not
 * it wants Normalized Device Coords (NDC) computed.  I.e. whether
 * we should "Divide-by-W".  Software renders will want that.
 */
void
_tnl_need_projected_coords( GLcontext *ctx, GLboolean mode )
{
   TNLcontext *tnl = TNL_CONTEXT(ctx);
   if (tnl->NeedNdcCoords != mode) {
      tnl->NeedNdcCoords = mode;
      _tnl_InvalidateState( ctx, _NEW_PROJECTION );
   }
}

void
_tnl_need_dlist_loopback( GLcontext *ctx, GLboolean mode )
{
   TNLcontext *tnl = TNL_CONTEXT(ctx);
   tnl->LoopbackDListCassettes = mode;
}

void
_tnl_need_dlist_norm_lengths( GLcontext *ctx, GLboolean mode )
{
   TNLcontext *tnl = TNL_CONTEXT(ctx);
   tnl->CalcDListNormalLengths = mode;
}

void
_tnl_isolate_materials( GLcontext *ctx, GLboolean mode )
{
   TNLcontext *tnl = TNL_CONTEXT(ctx);
   tnl->IsolateMaterials = mode;
}

void
_tnl_allow_vertex_fog( GLcontext *ctx, GLboolean value )
{
   TNLcontext *tnl = TNL_CONTEXT(ctx);
   tnl->AllowVertexFog = value;
   tnl->_DoVertexFog = (tnl->AllowVertexFog && (ctx->Hint.Fog != GL_NICEST))
      || !tnl->AllowPixelFog;

}

void
_tnl_allow_pixel_fog( GLcontext *ctx, GLboolean value )
{
   TNLcontext *tnl = TNL_CONTEXT(ctx);
   tnl->AllowPixelFog = value;
   tnl->_DoVertexFog = (tnl->AllowVertexFog && (ctx->Hint.Fog != GL_NICEST))
      || !tnl->AllowPixelFog;
}