src/mesa/drivers/dri/i915/i830_context.c

   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 }