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 "shader/shader_api.h"
  38
  39 #include "brw_context.h"
  40 #include "brw_draw.h"
  41 #include "brw_state.h"
  42 #include "intel_span.h"
  43 #include "tnl/t_pipeline.h"
  44
  45
  46 /***************************************
  47  * Mesa's Driver Functions
  48  ***************************************/
  49
  50 static void brwUseProgram(GLcontext *ctx, GLuint program)
  51 {
  52    _mesa_use_program(ctx, program);
  53 }
  54
  55 static void brwInitProgFuncs( struct dd_function_table *functions )
  56 {
  57    functions->UseProgram = brwUseProgram;
  58 }
  59 static void brwInitDriverFunctions( struct dd_function_table *functions )
  60 {
  61    intelInitDriverFunctions( functions );
  62
  63    brwInitFragProgFuncs( functions );
  64    brwInitProgFuncs( functions );
  65    brw_init_queryobj_functions(functions);
  66
  67    functions->Viewport = intel_viewport;
  68 }
  69
  70 GLboolean brwCreateContext( const __GLcontextModes *mesaVis,
  71                             __DRIcontext *driContextPriv,
  72                             void *sharedContextPrivate)
  73 {
  74    struct dd_function_table functions;
  75    struct brw_context *brw = (struct brw_context *) CALLOC_STRUCT(brw_context);
  76    struct intel_context *intel = &brw->intel;
  77    GLcontext *ctx = &intel->ctx;
  78
  79    if (!brw) {
  80       _mesa_printf("%s: failed to alloc context\n", __FUNCTION__);
  81       return GL_FALSE;
  82    }
  83
  84    brwInitVtbl( brw );
  85    brwInitDriverFunctions( &functions );
  86
  87    if (!intelInitContext( intel, mesaVis, driContextPriv,
  88                           sharedContextPrivate, &functions )) {
  89       _mesa_printf("%s: failed to init intel context\n", __FUNCTION__);
  90       FREE(brw);
  91       return GL_FALSE;
  92    }
  93
  94    /* Initialize swrast, tnl driver tables: */
  95    intelInitSpanFuncs(ctx);
  96
  97    TNL_CONTEXT(ctx)->Driver.RunPipeline = _tnl_run_pipeline;
  98
  99    ctx->Const.MaxDrawBuffers = BRW_MAX_DRAW_BUFFERS;
 100    ctx->Const.MaxTextureImageUnits = BRW_MAX_TEX_UNIT;
 101    ctx->Const.MaxTextureCoordUnits = 8; /* Mesa limit */
 102    ctx->Const.MaxTextureUnits = MIN2(ctx->Const.MaxTextureCoordUnits,
 103                                      ctx->Const.MaxTextureImageUnits);
 104    ctx->Const.MaxVertexTextureImageUnits = 0; /* no vertex shader textures */
 105    ctx->Const.MaxCombinedTextureImageUnits =
 106       ctx->Const.MaxVertexTextureImageUnits +
 107       ctx->Const.MaxTextureImageUnits;
 108
 109    /* Mesa limits textures to 4kx4k; it would be nice to fix that someday
 110     */
 111    ctx->Const.MaxTextureLevels = 13;
 112    ctx->Const.Max3DTextureLevels = 9;
 113    ctx->Const.MaxCubeTextureLevels = 12;
 114    ctx->Const.MaxTextureRectSize = (1<<12);
 115
 116    ctx->Const.MaxTextureMaxAnisotropy = 16.0;
 117
 118    /* if conformance mode is set, swrast can handle any size AA point */
 119    ctx->Const.MaxPointSizeAA = 255.0;
 120
 121    /* We want the GLSL compiler to emit code that uses condition codes */
 122    ctx->Shader.EmitCondCodes = GL_TRUE;
 123    ctx->Shader.EmitNVTempInitialization = GL_TRUE;
 124
 125    ctx->Const.VertexProgram.MaxNativeInstructions = (16 * 1024);
 126    ctx->Const.VertexProgram.MaxAluInstructions = 0;
 127    ctx->Const.VertexProgram.MaxTexInstructions = 0;
 128    ctx->Const.VertexProgram.MaxTexIndirections = 0;
 129    ctx->Const.VertexProgram.MaxNativeAluInstructions = 0;
 130    ctx->Const.VertexProgram.MaxNativeTexInstructions = 0;
 131    ctx->Const.VertexProgram.MaxNativeTexIndirections = 0;
 132    ctx->Const.VertexProgram.MaxNativeAttribs = 16;
 133    ctx->Const.VertexProgram.MaxNativeTemps = 256;
 134    ctx->Const.VertexProgram.MaxNativeAddressRegs = 1;
 135    ctx->Const.VertexProgram.MaxNativeParameters = 1024;
 136    ctx->Const.VertexProgram.MaxEnvParams =
 137       MIN2(ctx->Const.VertexProgram.MaxNativeParameters,
 138            ctx->Const.VertexProgram.MaxEnvParams);
 139
 140    ctx->Const.FragmentProgram.MaxNativeInstructions = (16 * 1024);
 141    ctx->Const.FragmentProgram.MaxNativeAluInstructions = (16 * 1024);
 142    ctx->Const.FragmentProgram.MaxNativeTexInstructions = (16 * 1024);
 143    ctx->Const.FragmentProgram.MaxNativeTexIndirections = (16 * 1024);
 144    ctx->Const.FragmentProgram.MaxNativeAttribs = 12;
 145    ctx->Const.FragmentProgram.MaxNativeTemps = 256;
 146    ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0;
 147    ctx->Const.FragmentProgram.MaxNativeParameters = 1024;
 148    ctx->Const.FragmentProgram.MaxEnvParams =
 149       MIN2(ctx->Const.FragmentProgram.MaxNativeParameters,
 150            ctx->Const.FragmentProgram.MaxEnvParams);
 151
 152    if (intel->is_ironlake || intel->is_g4x) {
 153       brw->CMD_VF_STATISTICS = CMD_VF_STATISTICS_GM45;
 154       brw->CMD_PIPELINE_SELECT = CMD_PIPELINE_SELECT_GM45;
 155       brw->has_surface_tile_offset = GL_TRUE;
 156       brw->has_compr4 = GL_TRUE;
 157       brw->has_aa_line_parameters = GL_TRUE;
 158   } else {
 159       brw->CMD_VF_STATISTICS = CMD_VF_STATISTICS_965;
 160       brw->CMD_PIPELINE_SELECT = CMD_PIPELINE_SELECT_965;
 161    }
 162
 163    /* WM maximum threads is number of EUs times number of threads per EU. */
 164    if (intel->is_ironlake) {
 165       brw->urb.size = 1024;
 166       brw->vs_max_threads = 72;
 167       brw->wm_max_threads = 12 * 6;
 168    } else if (intel->is_g4x) {
 169       brw->urb.size = 384;
 170       brw->vs_max_threads = 32;
 171       brw->wm_max_threads = 10 * 5;
 172    } else {
 173       brw->urb.size = 256;
 174       brw->vs_max_threads = 16;
 175       brw->wm_max_threads = 8 * 4;
 176       brw->has_negative_rhw_bug = GL_TRUE;
 177    }
 178
 179    if (INTEL_DEBUG & DEBUG_SINGLE_THREAD) {
 180       brw->vs_max_threads = 1;
 181       brw->wm_max_threads = 1;
 182    }
 183
 184    brw_init_state( brw );
 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    make_empty_list(&brw->query.active_head);
 195
 196    brw_draw_init( brw );
 197
 198    return GL_TRUE;
 199 }
 200