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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/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 "../glsl/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.                   unsigned *error,
  60.                   void *sharedContextPrivate)
  61. {
  62.    struct dd_function_table functions;
  63.    struct i830_context *i830 = rzalloc(NULL, struct i830_context);
  64.    struct intel_context *intel = &i830->intel;
  65.    struct gl_context *ctx = &intel->ctx;
  66.  
  67.    if (!i830) {
  68.       *error = __DRI_CTX_ERROR_NO_MEMORY;
  69.       return false;
  70.    }
  71.  
  72.    i830InitVtbl(i830);
  73.    i830InitDriverFunctions(&functions);
  74.  
  75.    if (!intelInitContext(intel, __DRI_API_OPENGL,
  76.                          major_version, minor_version,
  77.                          mesaVis, driContextPriv,
  78.                          sharedContextPrivate, &functions,
  79.                          error)) {
  80.       ralloc_free(i830);
  81.       return false;
  82.    }
  83.  
  84.    intel_init_texture_formats(ctx);
  85.  
  86.    _math_matrix_ctr(&intel->ViewportMatrix);
  87.  
  88.    /* Initialize swrast, tnl driver tables: */
  89.    intelInitTriFuncs(ctx);
  90.  
  91.    /* Install the customized pipeline: */
  92.    _tnl_destroy_pipeline(ctx);
  93.    _tnl_install_pipeline(ctx, intel_pipeline);
  94.  
  95.    if (intel->no_rast)
  96.       FALLBACK(intel, INTEL_FALLBACK_USER, 1);
  97.  
  98.    intel->ctx.Const.MaxTextureUnits = I830_TEX_UNITS;
  99.    intel->ctx.Const.FragmentProgram.MaxTextureImageUnits = I830_TEX_UNITS;
  100.    intel->ctx.Const.MaxTextureCoordUnits = I830_TEX_UNITS;
  101.  
  102.    /* Advertise the full hardware capabilities.  The new memory
  103.     * manager should cope much better with overload situations:
  104.     */
  105.    ctx->Const.MaxTextureLevels = 12;
  106.    ctx->Const.Max3DTextureLevels = 9;
  107.    ctx->Const.MaxCubeTextureLevels = 11;
  108.    ctx->Const.MaxTextureRectSize = (1 << 11);
  109.    ctx->Const.MaxTextureUnits = I830_TEX_UNITS;
  110.  
  111.    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
  112.  
  113.    ctx->Const.MaxDrawBuffers = 1;
  114.    ctx->Const.QueryCounterBits.SamplesPassed = 0;
  115.  
  116.    _tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
  117.                       18 * sizeof(GLfloat));
  118.  
  119.    intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
  120.  
  121.    i830InitState(i830);
  122.  
  123.    _tnl_allow_vertex_fog(ctx, 1);
  124.    _tnl_allow_pixel_fog(ctx, 0);
  125.  
  126.    _mesa_compute_version(ctx);
  127.  
  128.    _mesa_initialize_dispatch_tables(ctx);
  129.    _mesa_initialize_vbo_vtxfmt(ctx);
  130.  
  131.    return true;
  132. }
  133.