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 "program/shader_api.h"
  38
  39 #include "brw_context.h"
  40 #include "brw_defines.h"
  41 #include "brw_draw.h"
  42 #include "brw_state.h"
  43 #include "intel_span.h"
  44 #include "tnl/t_pipeline.h"
  45
  46
  47 /***************************************
  48  * Mesa's Driver Functions
  49  ***************************************/
  50
  51 static void brwInitDriverFunctions( struct dd_function_table *functions )
  52 {
  53    intelInitDriverFunctions( functions );
  54
  55    brwInitFragProgFuncs( functions );
  56    brw_init_queryobj_functions(functions);
  57 }
  58
  59 GLboolean brwCreateContext( int api,
  60                             const __GLcontextModes *mesaVis,
  61                             __DRIcontext *driContextPriv,
  62                             void *sharedContextPrivate)
  63 {
  64    struct dd_function_table functions;
  65    struct brw_context *brw = (struct brw_context *) CALLOC_STRUCT(brw_context);
  66    struct intel_context *intel = &brw->intel;
  67    GLcontext *ctx = &intel->ctx;
  68
  69    if (!brw) {
  70       printf("%s: failed to alloc context\n", __FUNCTION__);
  71       return GL_FALSE;
  72    }
  73
  74    brwInitVtbl( brw );
  75    brwInitDriverFunctions( &functions );
  76
  77    if (!intelInitContext( intel, api, mesaVis, driContextPriv,
  78                           sharedContextPrivate, &functions )) {
  79       printf("%s: failed to init intel context\n", __FUNCTION__);
  80       FREE(brw);
  81       return GL_FALSE;
  82    }
  83
  84    /* Initialize swrast, tnl driver tables: */
  85    intelInitSpanFuncs(ctx);
  86
  87    TNL_CONTEXT(ctx)->Driver.RunPipeline = _tnl_run_pipeline;
  88
  89    ctx->Const.MaxDrawBuffers = BRW_MAX_DRAW_BUFFERS;
  90    ctx->Const.MaxTextureImageUnits = BRW_MAX_TEX_UNIT;
  91    ctx->Const.MaxTextureCoordUnits = 8; /* Mesa limit */
  92    ctx->Const.MaxTextureUnits = MIN2(ctx->Const.MaxTextureCoordUnits,
  93                                      ctx->Const.MaxTextureImageUnits);
  94    ctx->Const.MaxVertexTextureImageUnits = 0; /* no vertex shader textures */
  95    ctx->Const.MaxCombinedTextureImageUnits =
  96       ctx->Const.MaxVertexTextureImageUnits +
  97       ctx->Const.MaxTextureImageUnits;
  98
  99    /* Mesa limits textures to 4kx4k; it would be nice to fix that someday
 100     */
 101    ctx->Const.MaxTextureLevels = 13;
 102    ctx->Const.Max3DTextureLevels = 9;
 103    ctx->Const.MaxCubeTextureLevels = 12;
 104    ctx->Const.MaxTextureRectSize = (1<<12);
 105
 106    ctx->Const.MaxTextureMaxAnisotropy = 16.0;
 107
 108    /* if conformance mode is set, swrast can handle any size AA point */
 109    ctx->Const.MaxPointSizeAA = 255.0;
 110
 111    /* We want the GLSL compiler to emit code that uses condition codes */
 112    ctx->Shader.EmitCondCodes = GL_TRUE;
 113    ctx->Shader.EmitNVTempInitialization = GL_TRUE;
 114
 115    ctx->Const.VertexProgram.MaxNativeInstructions = (16 * 1024);
 116    ctx->Const.VertexProgram.MaxAluInstructions = 0;
 117    ctx->Const.VertexProgram.MaxTexInstructions = 0;
 118    ctx->Const.VertexProgram.MaxTexIndirections = 0;
 119    ctx->Const.VertexProgram.MaxNativeAluInstructions = 0;
 120    ctx->Const.VertexProgram.MaxNativeTexInstructions = 0;
 121    ctx->Const.VertexProgram.MaxNativeTexIndirections = 0;
 122    ctx->Const.VertexProgram.MaxNativeAttribs = 16;
 123    ctx->Const.VertexProgram.MaxNativeTemps = 256;
 124    ctx->Const.VertexProgram.MaxNativeAddressRegs = 1;
 125    ctx->Const.VertexProgram.MaxNativeParameters = 1024;
 126    ctx->Const.VertexProgram.MaxEnvParams =
 127       MIN2(ctx->Const.VertexProgram.MaxNativeParameters,
 128            ctx->Const.VertexProgram.MaxEnvParams);
 129
 130    ctx->Const.FragmentProgram.MaxNativeInstructions = (16 * 1024);
 131    ctx->Const.FragmentProgram.MaxNativeAluInstructions = (16 * 1024);
 132    ctx->Const.FragmentProgram.MaxNativeTexInstructions = (16 * 1024);
 133    ctx->Const.FragmentProgram.MaxNativeTexIndirections = (16 * 1024);
 134    ctx->Const.FragmentProgram.MaxNativeAttribs = 12;
 135    ctx->Const.FragmentProgram.MaxNativeTemps = 256;
 136    ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0;
 137    ctx->Const.FragmentProgram.MaxNativeParameters = 1024;
 138    ctx->Const.FragmentProgram.MaxEnvParams =
 139       MIN2(ctx->Const.FragmentProgram.MaxNativeParameters,
 140            ctx->Const.FragmentProgram.MaxEnvParams);
 141
 142    if (intel->is_g4x || intel->gen >= 5) {
 143       brw->CMD_VF_STATISTICS = CMD_VF_STATISTICS_GM45;
 144       brw->CMD_PIPELINE_SELECT = CMD_PIPELINE_SELECT_GM45;
 145       brw->has_surface_tile_offset = GL_TRUE;
 146       brw->has_compr4 = GL_TRUE;
 147       brw->has_aa_line_parameters = GL_TRUE;
 148       brw->has_pln = GL_TRUE;
 149   } else {
 150       brw->CMD_VF_STATISTICS = CMD_VF_STATISTICS_965;
 151       brw->CMD_PIPELINE_SELECT = CMD_PIPELINE_SELECT_965;
 152    }
 153
 154    /* WM maximum threads is number of EUs times number of threads per EU. */
 155    if (intel->gen == 5) {
 156       brw->urb.size = 1024;
 157       brw->vs_max_threads = 72;
 158       brw->wm_max_threads = 12 * 6;
 159    } else if (intel->is_g4x) {
 160       brw->urb.size = 384;
 161       brw->vs_max_threads = 32;
 162       brw->wm_max_threads = 10 * 5;
 163    } else if (intel->gen < 6) {
 164       brw->urb.size = 256;
 165       brw->vs_max_threads = 16;
 166       brw->wm_max_threads = 8 * 4;
 167       brw->has_negative_rhw_bug = GL_TRUE;
 168    }
 169
 170    if (INTEL_DEBUG & DEBUG_SINGLE_THREAD) {
 171       brw->vs_max_threads = 1;
 172       brw->wm_max_threads = 1;
 173    }
 174
 175    brw_init_state( brw );
 176
 177    brw->curbe.last_buf = calloc(1, 4096);
 178    brw->curbe.next_buf = calloc(1, 4096);
 179
 180    brw->state.dirty.mesa = ~0;
 181    brw->state.dirty.brw = ~0;
 182
 183    brw->emit_state_always = 0;
 184
 185    ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 186    ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 187
 188    brw_draw_init( brw );
 189
 190    return GL_TRUE;
 191 }
 192