i830_context.c revision f17ea143cbe214eb4b249b56264a378f839dc3a6 
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 "main/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 "tnl/t_pipeline.h"
36#include "utils.h"
37#include "intel_span.h"
38#include "intel_pixel.h"
39#include "intel_tris.h"
40
41/***************************************
42 * Mesa's Driver Functions
43 ***************************************/
44
45static void
46i830InitDriverFunctions(struct dd_function_table *functions)
47{
48   intelInitDriverFunctions(functions);
49   i830InitStateFuncs(functions);
50}
51
52extern const struct tnl_pipeline_stage *intel_pipeline[];
53
54GLboolean
55i830CreateContext(const __GLcontextModes * mesaVis,
56                  __DRIcontextPrivate * driContextPriv,
57                  void *sharedContextPrivate)
58{
59   struct dd_function_table functions;
60   struct i830_context *i830 = CALLOC_STRUCT(i830_context);
61   struct intel_context *intel = &i830->intel;
62   GLcontext *ctx = &intel->ctx;
63   if (!i830)
64      return GL_FALSE;
65
66   i830InitVtbl(i830);
67   i830InitDriverFunctions(&functions);
68
69   if (!intelInitContext(intel, mesaVis, driContextPriv,
70                         sharedContextPrivate, &functions)) {
71      FREE(i830);
72      return GL_FALSE;
73   }
74
75   _math_matrix_ctr(&intel->ViewportMatrix);
76
77   /* Initialize swrast, tnl driver tables: */
78   intelInitSpanFuncs(ctx);
79   intelInitTriFuncs(ctx);
80
81   /* Install the customized pipeline: */
82   _tnl_destroy_pipeline(ctx);
83   _tnl_install_pipeline(ctx, intel_pipeline);
84
85   if (intel->no_rast)
86      FALLBACK(intel, INTEL_FALLBACK_USER, 1);
87
88   intel->ctx.Const.MaxTextureUnits = I830_TEX_UNITS;
89   intel->ctx.Const.MaxTextureImageUnits = I830_TEX_UNITS;
90   intel->ctx.Const.MaxTextureCoordUnits = I830_TEX_UNITS;
91
92   /* Advertise the full hardware capabilities.  The new memory
93    * manager should cope much better with overload situations:
94    */
95   ctx->Const.MaxTextureLevels = 12;
96   ctx->Const.Max3DTextureLevels = 9;
97   ctx->Const.MaxCubeTextureLevels = 11;
98   ctx->Const.MaxTextureRectSize = (1 << 11);
99   ctx->Const.MaxTextureUnits = I830_TEX_UNITS;
100
101   ctx->Const.MaxDrawBuffers = 1;
102
103   _tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
104                      18 * sizeof(GLfloat));
105
106   intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
107
108   i830InitState(i830);
109   i830InitMetaFuncs(i830);
110
111   _tnl_allow_vertex_fog(ctx, 1);
112   _tnl_allow_pixel_fog(ctx, 0);
113
114   return GL_TRUE;
115}
116