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  * Mesa's Driver Functions
  46  ***************************************/
  47
  48 static void brwInitDriverFunctions( struct dd_function_table *functions )
  49 {
  50    intelInitDriverFunctions( functions );
  51
  52    brwInitFragProgFuncs( functions );
  53    brw_init_queryobj_functions(functions);
  54
  55    functions->Enable = brw_enable;
  56    functions->DepthRange = brw_depth_range;
  57 }
  58
  59 GLboolean brwCreateContext( int api,
  60                             const struct gl_config *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    struct gl_context *ctx = &intel->ctx;
  68    unsigned i;
  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    for (i = 0; i <= MESA_SHADER_FRAGMENT; i++) {
 114       ctx->ShaderCompilerOptions[i].EmitCondCodes = GL_TRUE;
 115       ctx->ShaderCompilerOptions[i].EmitNVTempInitialization = GL_TRUE;
 116       ctx->ShaderCompilerOptions[i].EmitNoNoise = GL_TRUE;
 117       ctx->ShaderCompilerOptions[i].EmitNoMainReturn = GL_TRUE;
 118       ctx->ShaderCompilerOptions[i].EmitNoIndirectInput = GL_TRUE;
 119       ctx->ShaderCompilerOptions[i].EmitNoIndirectOutput = GL_TRUE;
 120
 121       ctx->ShaderCompilerOptions[i].EmitNoIndirectUniform =
 122          (i == MESA_SHADER_FRAGMENT);
 123       ctx->ShaderCompilerOptions[i].EmitNoIndirectTemp =
 124          (i == MESA_SHADER_FRAGMENT);
 125    }
 126
 127    ctx->Const.VertexProgram.MaxNativeInstructions = (16 * 1024);
 128    ctx->Const.VertexProgram.MaxAluInstructions = 0;
 129    ctx->Const.VertexProgram.MaxTexInstructions = 0;
 130    ctx->Const.VertexProgram.MaxTexIndirections = 0;
 131    ctx->Const.VertexProgram.MaxNativeAluInstructions = 0;
 132    ctx->Const.VertexProgram.MaxNativeTexInstructions = 0;
 133    ctx->Const.VertexProgram.MaxNativeTexIndirections = 0;
 134    ctx->Const.VertexProgram.MaxNativeAttribs = 16;
 135    ctx->Const.VertexProgram.MaxNativeTemps = 256;
 136    ctx->Const.VertexProgram.MaxNativeAddressRegs = 1;
 137    ctx->Const.VertexProgram.MaxNativeParameters = 1024;
 138    ctx->Const.VertexProgram.MaxEnvParams =
 139       MIN2(ctx->Const.VertexProgram.MaxNativeParameters,
 140            ctx->Const.VertexProgram.MaxEnvParams);
 141
 142    ctx->Const.FragmentProgram.MaxNativeInstructions = (16 * 1024);
 143    ctx->Const.FragmentProgram.MaxNativeAluInstructions = (16 * 1024);
 144    ctx->Const.FragmentProgram.MaxNativeTexInstructions = (16 * 1024);
 145    ctx->Const.FragmentProgram.MaxNativeTexIndirections = (16 * 1024);
 146    ctx->Const.FragmentProgram.MaxNativeAttribs = 12;
 147    ctx->Const.FragmentProgram.MaxNativeTemps = 256;
 148    ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0;
 149    ctx->Const.FragmentProgram.MaxNativeParameters = 1024;
 150    ctx->Const.FragmentProgram.MaxEnvParams =
 151       MIN2(ctx->Const.FragmentProgram.MaxNativeParameters,
 152            ctx->Const.FragmentProgram.MaxEnvParams);
 153
 154    if (intel->is_g4x || intel->gen >= 5) {
 155       brw->CMD_VF_STATISTICS = CMD_VF_STATISTICS_GM45;
 156       brw->CMD_PIPELINE_SELECT = CMD_PIPELINE_SELECT_GM45;
 157       brw->has_surface_tile_offset = GL_TRUE;
 158       if (intel->gen < 6)
 159           brw->has_compr4 = GL_TRUE;
 160       brw->has_aa_line_parameters = GL_TRUE;
 161       brw->has_pln = GL_TRUE;
 162   } else {
 163       brw->CMD_VF_STATISTICS = CMD_VF_STATISTICS_965;
 164       brw->CMD_PIPELINE_SELECT = CMD_PIPELINE_SELECT_965;
 165    }
 166
 167    /* WM maximum threads is number of EUs times number of threads per EU. */
 168    if (intel->gen >= 6) {
 169       brw->urb.size = 1024;
 170       brw->vs_max_threads = 60;
 171       brw->wm_max_threads = 80;
 172    } else if (intel->gen == 5) {
 173       brw->urb.size = 1024;
 174       brw->vs_max_threads = 72;
 175       brw->wm_max_threads = 12 * 6;
 176    } else if (intel->is_g4x) {
 177       brw->urb.size = 384;
 178       brw->vs_max_threads = 32;
 179       brw->wm_max_threads = 10 * 5;
 180    } else if (intel->gen < 6) {
 181       brw->urb.size = 256;
 182       brw->vs_max_threads = 16;
 183       brw->wm_max_threads = 8 * 4;
 184       brw->has_negative_rhw_bug = GL_TRUE;
 185    }
 186
 187    if (INTEL_DEBUG & DEBUG_SINGLE_THREAD) {
 188       brw->vs_max_threads = 1;
 189       brw->wm_max_threads = 1;
 190    }
 191
 192    brw_init_state( brw );
 193
 194    brw->curbe.last_buf = calloc(1, 4096);
 195    brw->curbe.next_buf = calloc(1, 4096);
 196
 197    brw->state.dirty.mesa = ~0;
 198    brw->state.dirty.brw = ~0;
 199
 200    brw->emit_state_always = 0;
 201
 202    ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 203    ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 204
 205    brw_draw_init( brw );
 206
 207    /* Now that most driver functions are hooked up, initialize some of the
 208     * immediate state.
 209     */
 210    brw_update_cc_vp(brw);
 211
 212    return GL_TRUE;
 213 }
 214