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 "texmem.h"
  31 #include "tnl/tnl.h"
  32 #include "tnl/t_vertex.h"
  33 #include "tnl/t_context.h"
  34 #include "tnl/t_pipeline.h"
  35 #include "intel_span.h"
  36 #include "intel_tris.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 GLboolean
  52 i830CreateContext(const __GLcontextModes * mesaVis,
  53                   __DRIcontext * driContextPriv,
  54                   void *sharedContextPrivate)
  55 {
  56    struct dd_function_table functions;
  57    struct i830_context *i830 = CALLOC_STRUCT(i830_context);
  58    struct intel_context *intel = &i830->intel;
  59    GLcontext *ctx = &intel->ctx;
  60    if (!i830)
  61       return GL_FALSE;
  62
  63    i830InitVtbl(i830);
  64    i830InitDriverFunctions(&functions);
  65
  66    if (!intelInitContext(intel, mesaVis, driContextPriv,
  67                          sharedContextPrivate, &functions)) {
  68       FREE(i830);
  69       return GL_FALSE;
  70    }
  71
  72    _math_matrix_ctr(&intel->ViewportMatrix);
  73
  74    /* Initialize swrast, tnl driver tables: */
  75    intelInitSpanFuncs(ctx);
  76    intelInitTriFuncs(ctx);
  77
  78    /* Install the customized pipeline: */
  79    _tnl_destroy_pipeline(ctx);
  80    _tnl_install_pipeline(ctx, intel_pipeline);
  81
  82    if (intel->no_rast)
  83       FALLBACK(intel, INTEL_FALLBACK_USER, 1);
  84
  85    intel->ctx.Const.MaxTextureUnits = I830_TEX_UNITS;
  86    intel->ctx.Const.MaxTextureImageUnits = I830_TEX_UNITS;
  87    intel->ctx.Const.MaxTextureCoordUnits = I830_TEX_UNITS;
  88
  89    /* Advertise the full hardware capabilities.  The new memory
  90     * manager should cope much better with overload situations:
  91     */
  92    ctx->Const.MaxTextureLevels = 12;
  93    ctx->Const.Max3DTextureLevels = 9;
  94    ctx->Const.MaxCubeTextureLevels = 11;
  95    ctx->Const.MaxTextureRectSize = (1 << 11);
  96    ctx->Const.MaxTextureUnits = I830_TEX_UNITS;
  97
  98    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
  99
 100    ctx->Const.MaxDrawBuffers = 1;
 101
 102    _tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
 103                       18 * sizeof(GLfloat));
 104
 105    intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
 106
 107    i830InitState(i830);
 108    i830InitMetaFuncs(i830);
 109
 110    _tnl_allow_vertex_fog(ctx, 1);
 111    _tnl_allow_pixel_fog(ctx, 0);
 112
 113    return GL_TRUE;
 114 }