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1 /**************************************************************************
2  *
3  * Copyright 2003 VMware, Inc.
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 VMWARE 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/extensions.h"
31 #include "main/imports.h"
32 #include "main/version.h"
33 #include "main/vtxfmt.h"
34 #include "tnl/tnl.h"
35 #include "tnl/t_vertex.h"
36 #include "tnl/t_context.h"
37 #include "tnl/t_pipeline.h"
38 #include "intel_tris.h"
39 #include "util/ralloc.h"
40 
41 /***************************************
42  * Mesa's Driver Functions
43  ***************************************/
44 
45 static void
i830InitDriverFunctions(struct dd_function_table * functions)46 i830InitDriverFunctions(struct dd_function_table *functions)
47 {
48    intelInitDriverFunctions(functions);
49    i830InitStateFuncs(functions);
50 }
51 
52 extern const struct tnl_pipeline_stage *intel_pipeline[];
53 
54 bool
i830CreateContext(int api,const struct gl_config * mesaVis,__DRIcontext * driContextPriv,unsigned major_version,unsigned minor_version,uint32_t flags,unsigned * error,void * sharedContextPrivate)55 i830CreateContext(int api,
56                   const struct gl_config * mesaVis,
57                   __DRIcontext * driContextPriv,
58                   unsigned major_version,
59                   unsigned minor_version,
60                   uint32_t flags,
61                   unsigned *error,
62                   void *sharedContextPrivate)
63 {
64    struct dd_function_table functions;
65    struct i830_context *i830 = rzalloc(NULL, struct i830_context);
66    struct intel_context *intel = &i830->intel;
67    struct gl_context *ctx = &intel->ctx;
68 
69    if (!i830) {
70       *error = __DRI_CTX_ERROR_NO_MEMORY;
71       return false;
72    }
73 
74    i830InitVtbl(i830);
75    i830InitDriverFunctions(&functions);
76 
77    if (!intelInitContext(intel, __DRI_API_OPENGL,
78                          major_version, minor_version, flags,
79                          mesaVis, driContextPriv,
80                          sharedContextPrivate, &functions,
81                          error)) {
82       ralloc_free(i830);
83       return false;
84    }
85 
86    intel_init_texture_formats(ctx);
87 
88    _math_matrix_ctr(&intel->ViewportMatrix);
89 
90    /* Initialize swrast, tnl driver tables: */
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.Program[MESA_SHADER_FRAGMENT].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    ctx->Const.QueryCounterBits.SamplesPassed = 0;
117 
118    _tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
119                       18 * sizeof(GLfloat));
120 
121    intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
122 
123    i830InitState(i830);
124 
125    _tnl_allow_vertex_fog(ctx, 1);
126    _tnl_allow_pixel_fog(ctx, 0);
127 
128    _mesa_override_extensions(ctx);
129    _mesa_compute_version(ctx);
130 
131    _mesa_initialize_dispatch_tables(ctx);
132    _mesa_initialize_vbo_vtxfmt(ctx);
133 
134    return true;
135 }
136