i830_context.c revision e2af1da1d3578f23e67ab9e259a9d59fec34f25a 
1/**************************************************************************
2 *
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * 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
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28#include "i830_context.h"
29#include "imports.h"
30#include "texmem.h"
31#include "intel_tex.h"
32#include "tnl/tnl.h"
33#include "tnl/t_vertex.h"
34#include "tnl/t_context.h"
35#include "utils.h"
36
37/***************************************
38 * Mesa's Driver Functions
39 ***************************************/
40
41static const struct dri_extension i830_extensions[] =
42{
43    { "GL_ARB_texture_env_crossbar",       NULL },
44    { NULL,                                NULL }
45};
46
47
48static void i830InitDriverFunctions( struct dd_function_table *functions )
49{
50   intelInitDriverFunctions( functions );
51   i830InitStateFuncs( functions );
52   i830InitTextureFuncs( functions );
53}
54
55
56GLboolean i830CreateContext( const __GLcontextModes *mesaVis,
57			    __DRIcontextPrivate *driContextPriv,
58			    void *sharedContextPrivate)
59{
60   struct dd_function_table functions;
61   i830ContextPtr i830 = (i830ContextPtr) CALLOC_STRUCT(i830_context);
62   intelContextPtr intel = &i830->intel;
63   GLcontext *ctx = &intel->ctx;
64   GLuint i;
65   if (!i830) return GL_FALSE;
66
67   i830InitVtbl( i830 );
68   i830InitDriverFunctions( &functions );
69
70   if (!intelInitContext( intel, mesaVis, driContextPriv,
71			  sharedContextPrivate, &functions )) {
72      FREE(i830);
73      return GL_FALSE;
74   }
75
76   intel->ctx.Const.MaxTextureUnits = I830_TEX_UNITS;
77   intel->ctx.Const.MaxTextureImageUnits = I830_TEX_UNITS;
78   intel->ctx.Const.MaxTextureCoordUnits = I830_TEX_UNITS;
79
80   intel->nr_heaps = 1;
81   intel->texture_heaps[0] =
82      driCreateTextureHeap( 0, intel,
83			    intel->intelScreen->tex.size,
84			    12,
85			    I830_NR_TEX_REGIONS,
86			    intel->sarea->texList,
87			    (unsigned *) & intel->sarea->texAge,
88			    & intel->swapped,
89			    sizeof( struct i830_texture_object ),
90			    (destroy_texture_object_t *)intelDestroyTexObj );
91
92   /* FIXME: driCalculateMaxTextureLevels assumes that mipmaps are tightly
93    * FIXME: packed, but they're not in Intel graphics hardware.
94    */
95   intel->ctx.Const.MaxTextureUnits = I830_TEX_UNITS;
96   i = driQueryOptioni( &intel->intelScreen->optionCache, "allow_large_textures");
97   driCalculateMaxTextureLevels( intel->texture_heaps,
98				 intel->nr_heaps,
99				 &intel->ctx.Const,
100				 4,
101				 11, /* max 2D texture size is 2048x2048 */
102				 8,  /* max 3D texture size is 256^3 */
103				 10, /* max CUBE texture size is 1024x1024 */
104				 11, /* max RECT. supported */
105				 12,
106				 GL_FALSE,
107				 i );
108
109   _tnl_init_vertices( ctx, ctx->Const.MaxArrayLockSize + 12,
110		       18 * sizeof(GLfloat) );
111
112   intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
113
114   driInitExtensions( ctx, i830_extensions, GL_FALSE );
115
116   i830InitState( i830 );
117
118
119   _tnl_allow_vertex_fog( ctx, 1 );
120   _tnl_allow_pixel_fog( ctx, 0 );
121
122   return GL_TRUE;
123}
124
125