i830_context.c revision a11fe62058ad9d44170be9346111e3f6630a3327 
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/api_exec.h"
30#include "main/imports.h"
31#include "main/version.h"
32#include "main/vtxfmt.h"
33#include "tnl/tnl.h"
34#include "tnl/t_vertex.h"
35#include "tnl/t_context.h"
36#include "tnl/t_pipeline.h"
37#include "intel_span.h"
38#include "intel_tris.h"
39#include "../glsl/ralloc.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
54bool
55i830CreateContext(int api,
56                  const struct gl_config * mesaVis,
57                  __DRIcontext * driContextPriv,
58                  unsigned major_version,
59                  unsigned minor_version,
60                  unsigned *error,
61                  void *sharedContextPrivate)
62{
63   struct dd_function_table functions;
64   struct i830_context *i830 = rzalloc(NULL, struct i830_context);
65   struct intel_context *intel = &i830->intel;
66   struct gl_context *ctx = &intel->ctx;
67
68   if (!i830) {
69      *error = __DRI_CTX_ERROR_NO_MEMORY;
70      return false;
71   }
72
73   i830InitVtbl(i830);
74   i830InitDriverFunctions(&functions);
75
76   if (!intelInitContext(intel, __DRI_API_OPENGL,
77                         major_version, minor_version,
78                         mesaVis, driContextPriv,
79                         sharedContextPrivate, &functions,
80                         error)) {
81      ralloc_free(i830);
82      return false;
83   }
84
85   intel_init_texture_formats(ctx);
86
87   _math_matrix_ctr(&intel->ViewportMatrix);
88
89   /* Initialize swrast, tnl driver tables: */
90   intelInitSpanFuncs(ctx);
91   intelInitTriFuncs(ctx);
92
93   /* Install the customized pipeline: */
94   _tnl_destroy_pipeline(ctx);
95   _tnl_install_pipeline(ctx, intel_pipeline);
96
97   if (intel->no_rast)
98      FALLBACK(intel, INTEL_FALLBACK_USER, 1);
99
100   intel->ctx.Const.MaxTextureUnits = I830_TEX_UNITS;
101   intel->ctx.Const.MaxTextureImageUnits = I830_TEX_UNITS;
102   intel->ctx.Const.MaxTextureCoordUnits = I830_TEX_UNITS;
103
104   /* Advertise the full hardware capabilities.  The new memory
105    * manager should cope much better with overload situations:
106    */
107   ctx->Const.MaxTextureLevels = 12;
108   ctx->Const.Max3DTextureLevels = 9;
109   ctx->Const.MaxCubeTextureLevels = 11;
110   ctx->Const.MaxTextureRectSize = (1 << 11);
111   ctx->Const.MaxTextureUnits = I830_TEX_UNITS;
112
113   ctx->Const.MaxTextureMaxAnisotropy = 2.0;
114
115   ctx->Const.MaxDrawBuffers = 1;
116
117   _tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
118                      18 * sizeof(GLfloat));
119
120   intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
121
122   i830InitState(i830);
123
124   _tnl_allow_vertex_fog(ctx, 1);
125   _tnl_allow_pixel_fog(ctx, 0);
126
127   _mesa_compute_version(ctx);
128
129   _mesa_initialize_exec_table(ctx);
130   _mesa_initialize_vbo_vtxfmt(ctx);
131
132   return true;
133}
134