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_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 brwUseProgram(GLcontext *ctx, GLuint program)
  52 {
  53    _mesa_use_program(ctx, program);
  54 }
  55
  56 static void brwInitProgFuncs( struct dd_function_table *functions )
  57 {
  58    functions->UseProgram = brwUseProgram;
  59 }
  60 static void brwInitDriverFunctions( struct dd_function_table *functions )
  61 {
  62    intelInitDriverFunctions( functions );
  63
  64    brwInitFragProgFuncs( functions );
  65    brwInitProgFuncs( functions );
  66    brw_init_queryobj_functions(functions);
  67
  68    functions->Viewport = intel_viewport;
  69 }
  70
  71 GLboolean brwCreateContext( int api,
  72                             const __GLcontextModes *mesaVis,
  73                             __DRIcontext *driContextPriv,
  74                             void *sharedContextPrivate)
  75 {
  76    struct dd_function_table functions;
  77    struct brw_context *brw = (struct brw_context *) CALLOC_STRUCT(brw_context);
  78    struct intel_context *intel = &brw->intel;
  79    GLcontext *ctx = &intel->ctx;
  80
  81    if (!brw) {
  82       printf("%s: failed to alloc context\n", __FUNCTION__);
  83       return GL_FALSE;
  84    }
  85
  86    brwInitVtbl( brw );
  87    brwInitDriverFunctions( &functions );
  88
  89    if (!intelInitContext( intel, api, mesaVis, driContextPriv,
  90                           sharedContextPrivate, &functions )) {
  91       printf("%s: failed to init intel context\n", __FUNCTION__);
  92       FREE(brw);
  93       return GL_FALSE;
  94    }
  95
  96    /* Initialize swrast, tnl driver tables: */
  97    intelInitSpanFuncs(ctx);
  98
  99    TNL_CONTEXT(ctx)->Driver.RunPipeline = _tnl_run_pipeline;
 100
 101    ctx->Const.MaxDrawBuffers = BRW_MAX_DRAW_BUFFERS;
 102    ctx->Const.MaxTextureImageUnits = BRW_MAX_TEX_UNIT;
 103    ctx->Const.MaxTextureCoordUnits = 8; /* Mesa limit */
 104    ctx->Const.MaxTextureUnits = MIN2(ctx->Const.MaxTextureCoordUnits,
 105                                      ctx->Const.MaxTextureImageUnits);
 106    ctx->Const.MaxVertexTextureImageUnits = 0; /* no vertex shader textures */
 107    ctx->Const.MaxCombinedTextureImageUnits =
 108       ctx->Const.MaxVertexTextureImageUnits +
 109       ctx->Const.MaxTextureImageUnits;
 110
 111    /* Mesa limits textures to 4kx4k; it would be nice to fix that someday
 112     */
 113    ctx->Const.MaxTextureLevels = 13;
 114    ctx->Const.Max3DTextureLevels = 9;
 115    ctx->Const.MaxCubeTextureLevels = 12;
 116    ctx->Const.MaxTextureRectSize = (1<<12);
 117
 118    ctx->Const.MaxTextureMaxAnisotropy = 16.0;
 119
 120    /* if conformance mode is set, swrast can handle any size AA point */
 121    ctx->Const.MaxPointSizeAA = 255.0;
 122
 123    /* We want the GLSL compiler to emit code that uses condition codes */
 124    ctx->Shader.EmitCondCodes = GL_TRUE;
 125    ctx->Shader.EmitNVTempInitialization = GL_TRUE;
 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       brw->has_compr4 = GL_TRUE;
 159       brw->has_aa_line_parameters = GL_TRUE;
 160       brw->has_pln = GL_TRUE;
 161   } else {
 162       brw->CMD_VF_STATISTICS = CMD_VF_STATISTICS_965;
 163       brw->CMD_PIPELINE_SELECT = CMD_PIPELINE_SELECT_965;
 164    }
 165
 166    /* WM maximum threads is number of EUs times number of threads per EU. */
 167    if (intel->gen == 5) {
 168       brw->urb.size = 1024;
 169       brw->vs_max_threads = 72;
 170       brw->wm_max_threads = 12 * 6;
 171    } else if (intel->is_g4x) {
 172       brw->urb.size = 384;
 173       brw->vs_max_threads = 32;
 174       brw->wm_max_threads = 10 * 5;
 175    } else if (intel->gen < 6) {
 176       brw->urb.size = 256;
 177       brw->vs_max_threads = 16;
 178       brw->wm_max_threads = 8 * 4;
 179       brw->has_negative_rhw_bug = GL_TRUE;
 180    }
 181
 182    if (INTEL_DEBUG & DEBUG_SINGLE_THREAD) {
 183       brw->vs_max_threads = 1;
 184       brw->wm_max_threads = 1;
 185    }
 186
 187    brw_init_state( brw );
 188
 189    brw->state.dirty.mesa = ~0;
 190    brw->state.dirty.brw = ~0;
 191
 192    brw->emit_state_always = 0;
 193
 194    ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 195    ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 196
 197    make_empty_list(&brw->query.active_head);
 198
 199    brw_draw_init( brw );
 200
 201    return GL_TRUE;
 202 }
 203