src/mesa/drivers/dri/i965/brw_context.c

   1 /*
   2  Copyright (C) Intel Corp.  2006.  All Rights Reserved.
   3  Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
   4  develop this 3D driver.
   5
   6  Permission is hereby granted, free of charge, to any person obtaining
   7  a 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, sublicense, 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
  16  portions of the Software.
  17
  18  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26  **********************************************************************/
  27  /*
  28   * Authors:
  29   *   Keith Whitwell <keith@tungstengraphics.com>
  30   */
  31
  32
  33 #include "main/imports.h"
  34 #include "main/api_noop.h"
  35 #include "main/macros.h"
  36 #include "main/simple_list.h"
  37 #include "brw_context.h"
  38 #include "brw_defines.h"
  39 #include "brw_draw.h"
  40 #include "brw_state.h"
  41 #include "intel_span.h"
  42 #include "tnl/t_pipeline.h"
  43
  44
  45 /***************************************
  46  * Mesa's Driver Functions
  47  ***************************************/
  48
  49 static void brwInitDriverFunctions( struct dd_function_table *functions )
  50 {
  51    intelInitDriverFunctions( functions );
  52
  53    brwInitFragProgFuncs( functions );
  54    brw_init_queryobj_functions(functions);
  55
  56    functions->Enable = brw_enable;
  57    functions->DepthRange = brw_depth_range;
  58 }
  59
  60 GLboolean brwCreateContext( int api,
  61                             const __GLcontextModes *mesaVis,
  62                             __DRIcontext *driContextPriv,
  63                             void *sharedContextPrivate)
  64 {
  65    struct dd_function_table functions;
  66    struct brw_context *brw = (struct brw_context *) CALLOC_STRUCT(brw_context);
  67    struct intel_context *intel = &brw->intel;
  68    GLcontext *ctx = &intel->ctx;
  69
  70    if (!brw) {
  71       printf("%s: failed to alloc context\n", __FUNCTION__);
  72       return GL_FALSE;
  73    }
  74
  75    brwInitVtbl( brw );
  76    brwInitDriverFunctions( &functions );
  77
  78    if (!intelInitContext( intel, api, mesaVis, driContextPriv,
  79                           sharedContextPrivate, &functions )) {
  80       printf("%s: failed to init intel context\n", __FUNCTION__);
  81       FREE(brw);
  82       return GL_FALSE;
  83    }
  84
  85    /* Initialize swrast, tnl driver tables: */
  86    intelInitSpanFuncs(ctx);
  87
  88    TNL_CONTEXT(ctx)->Driver.RunPipeline = _tnl_run_pipeline;
  89
  90    ctx->Const.MaxDrawBuffers = BRW_MAX_DRAW_BUFFERS;
  91    ctx->Const.MaxTextureImageUnits = BRW_MAX_TEX_UNIT;
  92    ctx->Const.MaxTextureCoordUnits = 8; /* Mesa limit */
  93    ctx->Const.MaxTextureUnits = MIN2(ctx->Const.MaxTextureCoordUnits,
  94                                      ctx->Const.MaxTextureImageUnits);
  95    ctx->Const.MaxVertexTextureImageUnits = 0; /* no vertex shader textures */
  96    ctx->Const.MaxCombinedTextureImageUnits =
  97       ctx->Const.MaxVertexTextureImageUnits +
  98       ctx->Const.MaxTextureImageUnits;
  99
 100    /* Mesa limits textures to 4kx4k; it would be nice to fix that someday
 101     */
 102    ctx->Const.MaxTextureLevels = 13;
 103    ctx->Const.Max3DTextureLevels = 9;
 104    ctx->Const.MaxCubeTextureLevels = 12;
 105    ctx->Const.MaxTextureRectSize = (1<<12);
 106
 107    ctx->Const.MaxTextureMaxAnisotropy = 16.0;
 108
 109    /* if conformance mode is set, swrast can handle any size AA point */
 110    ctx->Const.MaxPointSizeAA = 255.0;
 111
 112    /* We want the GLSL compiler to emit code that uses condition codes */
 113    ctx->Shader.EmitCondCodes = GL_TRUE;
 114    ctx->Shader.EmitNVTempInitialization = GL_TRUE;
 115
 116    ctx->Const.VertexProgram.MaxNativeInstructions = (16 * 1024);
 117    ctx->Const.VertexProgram.MaxAluInstructions = 0;
 118    ctx->Const.VertexProgram.MaxTexInstructions = 0;
 119    ctx->Const.VertexProgram.MaxTexIndirections = 0;
 120    ctx->Const.VertexProgram.MaxNativeAluInstructions = 0;
 121    ctx->Const.VertexProgram.MaxNativeTexInstructions = 0;
 122    ctx->Const.VertexProgram.MaxNativeTexIndirections = 0;
 123    ctx->Const.VertexProgram.MaxNativeAttribs = 16;
 124    ctx->Const.VertexProgram.MaxNativeTemps = 256;
 125    ctx->Const.VertexProgram.MaxNativeAddressRegs = 1;
 126    ctx->Const.VertexProgram.MaxNativeParameters = 1024;
 127    ctx->Const.VertexProgram.MaxEnvParams =
 128       MIN2(ctx->Const.VertexProgram.MaxNativeParameters,
 129            ctx->Const.VertexProgram.MaxEnvParams);
 130
 131    ctx->Const.FragmentProgram.MaxNativeInstructions = (16 * 1024);
 132    ctx->Const.FragmentProgram.MaxNativeAluInstructions = (16 * 1024);
 133    ctx->Const.FragmentProgram.MaxNativeTexInstructions = (16 * 1024);
 134    ctx->Const.FragmentProgram.MaxNativeTexIndirections = (16 * 1024);
 135    ctx->Const.FragmentProgram.MaxNativeAttribs = 12;
 136    ctx->Const.FragmentProgram.MaxNativeTemps = 256;
 137    ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0;
 138    ctx->Const.FragmentProgram.MaxNativeParameters = 1024;
 139    ctx->Const.FragmentProgram.MaxEnvParams =
 140       MIN2(ctx->Const.FragmentProgram.MaxNativeParameters,
 141            ctx->Const.FragmentProgram.MaxEnvParams);
 142
 143    if (intel->is_g4x || intel->gen >= 5) {
 144       brw->CMD_VF_STATISTICS = CMD_VF_STATISTICS_GM45;
 145       brw->CMD_PIPELINE_SELECT = CMD_PIPELINE_SELECT_GM45;
 146       brw->has_surface_tile_offset = GL_TRUE;
 147       if (intel->gen < 6)
 148           brw->has_compr4 = GL_TRUE;
 149       brw->has_aa_line_parameters = GL_TRUE;
 150       brw->has_pln = GL_TRUE;
 151   } else {
 152       brw->CMD_VF_STATISTICS = CMD_VF_STATISTICS_965;
 153       brw->CMD_PIPELINE_SELECT = CMD_PIPELINE_SELECT_965;
 154    }
 155
 156    /* WM maximum threads is number of EUs times number of threads per EU. */
 157    if (intel->gen >= 6) {
 158       brw->urb.size = 1024;
 159       brw->vs_max_threads = 60;
 160       brw->wm_max_threads = 80;
 161    } else if (intel->gen == 5) {
 162       brw->urb.size = 1024;
 163       brw->vs_max_threads = 72;
 164       brw->wm_max_threads = 12 * 6;
 165    } else if (intel->is_g4x) {
 166       brw->urb.size = 384;
 167       brw->vs_max_threads = 32;
 168       brw->wm_max_threads = 10 * 5;
 169    } else if (intel->gen < 6) {
 170       brw->urb.size = 256;
 171       brw->vs_max_threads = 16;
 172       brw->wm_max_threads = 8 * 4;
 173       brw->has_negative_rhw_bug = GL_TRUE;
 174    }
 175
 176    if (INTEL_DEBUG & DEBUG_SINGLE_THREAD) {
 177       brw->vs_max_threads = 1;
 178       brw->wm_max_threads = 1;
 179    }
 180
 181    brw_init_state( brw );
 182
 183    brw->curbe.last_buf = calloc(1, 4096);
 184    brw->curbe.next_buf = calloc(1, 4096);
 185
 186    brw->state.dirty.mesa = ~0;
 187    brw->state.dirty.brw = ~0;
 188
 189    brw->emit_state_always = 0;
 190
 191    ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 192    ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 193
 194    brw_draw_init( brw );
 195
 196    /* Now that most driver functions are hooked up, initialize some of the
 197     * immediate state.
 198     */
 199    brw_update_cc_vp(brw);
 200
 201    return GL_TRUE;
 202 }
 203