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      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
     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
     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