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

   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/extensions.h"
  31 #include "util/imports.h"
  32 #include "main/version.h"
  33 #include "main/vtxfmt.h"
  34 #include "tnl/tnl.h"
  35 #include "tnl/t_vertex.h"
  36 #include "tnl/t_context.h"
  37 #include "tnl/t_pipeline.h"
  38 #include "intel_tris.h"
  39 #include "util/ralloc.h"
  40
  41 /***************************************
  42  * Mesa's Driver Functions
  43  ***************************************/
  44
  45 static void
  46 i830InitDriverFunctions(struct dd_function_table *functions)
  47 {
  48    intelInitDriverFunctions(functions);
  49    i830InitStateFuncs(functions);
  50 }
  51
  52 extern const struct tnl_pipeline_stage *intel_pipeline[];
  53
  54 bool
  55 i830CreateContext(int api,
  56                   const struct gl_config * mesaVis,
  57                   __DRIcontext * driContextPriv,
  58                   unsigned major_version,
  59                   unsigned minor_version,
  60                   uint32_t flags,
  61                   unsigned *error,
  62                   void *sharedContextPrivate)
  63 {
  64    struct dd_function_table functions;
  65    struct i830_context *i830 = rzalloc(NULL, struct i830_context);
  66    struct intel_context *intel = &i830->intel;
  67    struct gl_context *ctx = &intel->ctx;
  68
  69    if (!i830) {
  70       *error = __DRI_CTX_ERROR_NO_MEMORY;
  71       return false;
  72    }
  73
  74    i830InitVtbl(i830);
  75    i830InitDriverFunctions(&functions);
  76
  77    if (!intelInitContext(intel, __DRI_API_OPENGL,
  78                          major_version, minor_version, flags,
  79                          mesaVis, driContextPriv,
  80                          sharedContextPrivate, &functions,
  81                          error)) {
  82       ralloc_free(i830);
  83       return false;
  84    }
  85
  86    intel_init_texture_formats(ctx);
  87
  88    _math_matrix_ctr(&intel->ViewportMatrix);
  89
  90    /* Initialize swrast, tnl driver tables: */
  91    intelInitTriFuncs(ctx);
  92
  93    /* Install the customized pipeline: */
  94    _tnl_destroy_pipeline(ctx);
  95    _tnl_install_pipeline(ctx, intel_pipeline);
  96
  97    if (intel->no_rast)
  98       FALLBACK(intel, INTEL_FALLBACK_USER, 1);
  99
 100    intel->ctx.Const.MaxTextureUnits = I830_TEX_UNITS;
 101    intel->ctx.Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits = I830_TEX_UNITS;
 102    intel->ctx.Const.MaxTextureCoordUnits = I830_TEX_UNITS;
 103
 104    /* Advertise the full hardware capabilities.  The new memory
 105     * manager should cope much better with overload situations:
 106     */
 107    ctx->Const.MaxTextureSize = 2048;
 108    ctx->Const.Max3DTextureLevels = 9;
 109    ctx->Const.MaxCubeTextureLevels = 11;
 110    ctx->Const.MaxTextureRectSize = (1 << 11);
 111    ctx->Const.MaxTextureUnits = I830_TEX_UNITS;
 112
 113    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
 114
 115    ctx->Const.MaxDrawBuffers = 1;
 116    ctx->Const.QueryCounterBits.SamplesPassed = 0;
 117
 118    _tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
 119                       18 * sizeof(GLfloat));
 120
 121    intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
 122
 123    i830InitState(i830);
 124
 125    _tnl_allow_vertex_fog(ctx, 1);
 126    _tnl_allow_pixel_fog(ctx, 0);
 127
 128    _mesa_override_extensions(ctx);
 129    _mesa_compute_version(ctx);
 130
 131    _mesa_initialize_dispatch_tables(ctx);
 132    _mesa_initialize_vbo_vtxfmt(ctx);
 133
 134    return true;
 135 }