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/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
  37 /***************************************
  38  * Mesa's Driver Functions
  39  ***************************************/
  40
  41 static void
  42 i830InitDriverFunctions(struct dd_function_table *functions)
  43 {
  44    intelInitDriverFunctions(functions);
  45    i830InitStateFuncs(functions);
  46 }
  47
  48 extern const struct tnl_pipeline_stage *intel_pipeline[];
  49
  50 GLboolean
  51 i830CreateContext(const struct gl_config * mesaVis,
  52                   __DRIcontext * driContextPriv,
  53                   void *sharedContextPrivate)
  54 {
  55    struct dd_function_table functions;
  56    struct i830_context *i830 = CALLOC_STRUCT(i830_context);
  57    struct intel_context *intel = &i830->intel;
  58    struct gl_context *ctx = &intel->ctx;
  59    if (!i830)
  60       return GL_FALSE;
  61
  62    i830InitVtbl(i830);
  63    i830InitDriverFunctions(&functions);
  64
  65    if (!intelInitContext(intel, __DRI_API_OPENGL, mesaVis, driContextPriv,
  66                          sharedContextPrivate, &functions)) {
  67       FREE(i830);
  68       return GL_FALSE;
  69    }
  70
  71    _math_matrix_ctr(&intel->ViewportMatrix);
  72
  73    /* Initialize swrast, tnl driver tables: */
  74    intelInitSpanFuncs(ctx);
  75    intelInitTriFuncs(ctx);
  76
  77    /* Install the customized pipeline: */
  78    _tnl_destroy_pipeline(ctx);
  79    _tnl_install_pipeline(ctx, intel_pipeline);
  80
  81    if (intel->no_rast)
  82       FALLBACK(intel, INTEL_FALLBACK_USER, 1);
  83
  84    intel->ctx.Const.MaxTextureUnits = I830_TEX_UNITS;
  85    intel->ctx.Const.MaxTextureImageUnits = I830_TEX_UNITS;
  86    intel->ctx.Const.MaxTextureCoordUnits = I830_TEX_UNITS;
  87
  88    /* Advertise the full hardware capabilities.  The new memory
  89     * manager should cope much better with overload situations:
  90     */
  91    ctx->Const.MaxTextureLevels = 12;
  92    ctx->Const.Max3DTextureLevels = 9;
  93    ctx->Const.MaxCubeTextureLevels = 11;
  94    ctx->Const.MaxTextureRectSize = (1 << 11);
  95    ctx->Const.MaxTextureUnits = I830_TEX_UNITS;
  96
  97    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
  98
  99    ctx->Const.MaxDrawBuffers = 1;
 100
 101    _tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
 102                       18 * sizeof(GLfloat));
 103
 104    intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
 105
 106    i830InitState(i830);
 107
 108    _tnl_allow_vertex_fog(ctx, 1);
 109    _tnl_allow_pixel_fog(ctx, 0);
 110
 111    return GL_TRUE;
 112 }