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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
     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
     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