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 "tnl/tnl.h"
31 #include "tnl/t_vertex.h"
32 #include "tnl/t_context.h"
33 #include "tnl/t_pipeline.h"
34 #include "intel_span.h"
35 #include "intel_tris.h"
36 #include "../glsl/ralloc.h"
37
38 /***************************************
39 * Mesa's Driver Functions
40 ***************************************/
41
42 static void
i830InitDriverFunctions(struct dd_function_table * functions)43 i830InitDriverFunctions(struct dd_function_table *functions)
44 {
45 intelInitDriverFunctions(functions);
46 i830InitStateFuncs(functions);
47 }
48
49 extern const struct tnl_pipeline_stage *intel_pipeline[];
50
51 bool
i830CreateContext(const struct gl_config * mesaVis,__DRIcontext * driContextPriv,void * sharedContextPrivate)52 i830CreateContext(const struct gl_config * mesaVis,
53 __DRIcontext * driContextPriv,
54 void *sharedContextPrivate)
55 {
56 struct dd_function_table functions;
57 struct i830_context *i830 = rzalloc(NULL, struct i830_context);
58 struct intel_context *intel = &i830->intel;
59 struct gl_context *ctx = &intel->ctx;
60 if (!i830)
61 return false;
62
63 i830InitVtbl(i830);
64 i830InitDriverFunctions(&functions);
65
66 if (!intelInitContext(intel, __DRI_API_OPENGL, mesaVis, driContextPriv,
67 sharedContextPrivate, &functions)) {
68 FREE(i830);
69 return false;
70 }
71
72 intel_init_texture_formats(ctx);
73
74 _math_matrix_ctr(&intel->ViewportMatrix);
75
76 /* Initialize swrast, tnl driver tables: */
77 intelInitSpanFuncs(ctx);
78 intelInitTriFuncs(ctx);
79
80 /* Install the customized pipeline: */
81 _tnl_destroy_pipeline(ctx);
82 _tnl_install_pipeline(ctx, intel_pipeline);
83
84 if (intel->no_rast)
85 FALLBACK(intel, INTEL_FALLBACK_USER, 1);
86
87 intel->ctx.Const.MaxTextureUnits = I830_TEX_UNITS;
88 intel->ctx.Const.MaxTextureImageUnits = I830_TEX_UNITS;
89 intel->ctx.Const.MaxTextureCoordUnits = I830_TEX_UNITS;
90
91 /* Advertise the full hardware capabilities. The new memory
92 * manager should cope much better with overload situations:
93 */
94 ctx->Const.MaxTextureLevels = 12;
95 ctx->Const.Max3DTextureLevels = 9;
96 ctx->Const.MaxCubeTextureLevels = 11;
97 ctx->Const.MaxTextureRectSize = (1 << 11);
98 ctx->Const.MaxTextureUnits = I830_TEX_UNITS;
99
100 ctx->Const.MaxTextureMaxAnisotropy = 2.0;
101
102 ctx->Const.MaxDrawBuffers = 1;
103
104 _tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
105 18 * sizeof(GLfloat));
106
107 intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
108
109 i830InitState(i830);
110
111 _tnl_allow_vertex_fog(ctx, 1);
112 _tnl_allow_pixel_fog(ctx, 0);
113
114 return true;
115 }
116