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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/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_tris.h"
     38 #include "util/ralloc.h"
     39 
     40 /***************************************
     41  * Mesa's Driver Functions
     42  ***************************************/
     43 
     44 static void
     45 i830InitDriverFunctions(struct dd_function_table *functions)
     46 {
     47    intelInitDriverFunctions(functions);
     48    i830InitStateFuncs(functions);
     49 }
     50 
     51 extern const struct tnl_pipeline_stage *intel_pipeline[];
     52 
     53 bool
     54 i830CreateContext(int api,
     55                   const struct gl_config * mesaVis,
     56                   __DRIcontext * driContextPriv,
     57                   unsigned major_version,
     58                   unsigned minor_version,
     59                   uint32_t flags,
     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, flags,
     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    intelInitTriFuncs(ctx);
     91 
     92    /* Install the customized pipeline: */
     93    _tnl_destroy_pipeline(ctx);
     94    _tnl_install_pipeline(ctx, intel_pipeline);
     95 
     96    if (intel->no_rast)
     97       FALLBACK(intel, INTEL_FALLBACK_USER, 1);
     98 
     99    intel->ctx.Const.MaxTextureUnits = I830_TEX_UNITS;
    100    intel->ctx.Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits = I830_TEX_UNITS;
    101    intel->ctx.Const.MaxTextureCoordUnits = I830_TEX_UNITS;
    102 
    103    /* Advertise the full hardware capabilities.  The new memory
    104     * manager should cope much better with overload situations:
    105     */
    106    ctx->Const.MaxTextureLevels = 12;
    107    ctx->Const.Max3DTextureLevels = 9;
    108    ctx->Const.MaxCubeTextureLevels = 11;
    109    ctx->Const.MaxTextureRectSize = (1 << 11);
    110    ctx->Const.MaxTextureUnits = I830_TEX_UNITS;
    111 
    112    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
    113 
    114    ctx->Const.MaxDrawBuffers = 1;
    115    ctx->Const.QueryCounterBits.SamplesPassed = 0;
    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_dispatch_tables(ctx);
    130    _mesa_initialize_vbo_vtxfmt(ctx);
    131 
    132    return true;
    133 }
    134