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       if (intel->gen == 6)
 127          ctx->ShaderCompilerOptions[i].EmitNoIfs = (i == MESA_SHADER_VERTEX);
 128    }
 129
 130    ctx->Const.VertexProgram.MaxNativeInstructions = (16 * 1024);
 131    ctx->Const.VertexProgram.MaxAluInstructions = 0;
 132    ctx->Const.VertexProgram.MaxTexInstructions = 0;
 133    ctx->Const.VertexProgram.MaxTexIndirections = 0;
 134    ctx->Const.VertexProgram.MaxNativeAluInstructions = 0;
 135    ctx->Const.VertexProgram.MaxNativeTexInstructions = 0;
 136    ctx->Const.VertexProgram.MaxNativeTexIndirections = 0;
 137    ctx->Const.VertexProgram.MaxNativeAttribs = 16;
 138    ctx->Const.VertexProgram.MaxNativeTemps = 256;
 139    ctx->Const.VertexProgram.MaxNativeAddressRegs = 1;
 140    ctx->Const.VertexProgram.MaxNativeParameters = 1024;
 141    ctx->Const.VertexProgram.MaxEnvParams =
 142       MIN2(ctx->Const.VertexProgram.MaxNativeParameters,
 143            ctx->Const.VertexProgram.MaxEnvParams);
 144
 145    ctx->Const.FragmentProgram.MaxNativeInstructions = (16 * 1024);
 146    ctx->Const.FragmentProgram.MaxNativeAluInstructions = (16 * 1024);
 147    ctx->Const.FragmentProgram.MaxNativeTexInstructions = (16 * 1024);
 148    ctx->Const.FragmentProgram.MaxNativeTexIndirections = (16 * 1024);
 149    ctx->Const.FragmentProgram.MaxNativeAttribs = 12;
 150    ctx->Const.FragmentProgram.MaxNativeTemps = 256;
 151    ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0;
 152    ctx->Const.FragmentProgram.MaxNativeParameters = 1024;
 153    ctx->Const.FragmentProgram.MaxEnvParams =
 154       MIN2(ctx->Const.FragmentProgram.MaxNativeParameters,
 155            ctx->Const.FragmentProgram.MaxEnvParams);
 156
 157    if (intel->is_g4x || intel->gen >= 5) {
 158       brw->CMD_VF_STATISTICS = CMD_VF_STATISTICS_GM45;
 159       brw->CMD_PIPELINE_SELECT = CMD_PIPELINE_SELECT_GM45;
 160       brw->has_surface_tile_offset = GL_TRUE;
 161       if (intel->gen < 6)
 162           brw->has_compr4 = GL_TRUE;
 163       brw->has_aa_line_parameters = GL_TRUE;
 164       brw->has_pln = GL_TRUE;
 165   } else {
 166       brw->CMD_VF_STATISTICS = CMD_VF_STATISTICS_965;
 167       brw->CMD_PIPELINE_SELECT = CMD_PIPELINE_SELECT_965;
 168    }
 169
 170    /* WM maximum threads is number of EUs times number of threads per EU. */
 171    if (intel->gen >= 6) {
 172       brw->urb.size = 1024;
 173       brw->vs_max_threads = 60;
 174       brw->wm_max_threads = 80;
 175    } else if (intel->gen == 5) {
 176       brw->urb.size = 1024;
 177       brw->vs_max_threads = 72;
 178       brw->wm_max_threads = 12 * 6;
 179    } else if (intel->is_g4x) {
 180       brw->urb.size = 384;
 181       brw->vs_max_threads = 32;
 182       brw->wm_max_threads = 10 * 5;
 183    } else if (intel->gen < 6) {
 184       brw->urb.size = 256;
 185       brw->vs_max_threads = 16;
 186       brw->wm_max_threads = 8 * 4;
 187       brw->has_negative_rhw_bug = GL_TRUE;
 188    }
 189
 190    if (INTEL_DEBUG & DEBUG_SINGLE_THREAD) {
 191       brw->vs_max_threads = 1;
 192       brw->wm_max_threads = 1;
 193    }
 194
 195    brw_init_state( brw );
 196
 197    brw->curbe.last_buf = calloc(1, 4096);
 198    brw->curbe.next_buf = calloc(1, 4096);
 199
 200    brw->state.dirty.mesa = ~0;
 201    brw->state.dirty.brw = ~0;
 202
 203    brw->emit_state_always = 0;
 204
 205    ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 206    ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 207
 208    brw_draw_init( brw );
 209
 210    /* Now that most driver functions are hooked up, initialize some of the
 211     * immediate state.
 212     */
 213    brw_update_cc_vp(brw);
 214
 215    return GL_TRUE;
 216 }
 217