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/vtxfmt.h"
  37 #include "main/simple_list.h"
  38 #include "shader/shader_api.h"
  39
  40 #include "brw_context.h"
  41 #include "brw_defines.h"
  42 #include "brw_draw.h"
  43 #include "brw_state.h"
  44 #include "brw_vs.h"
  45 #include "intel_tex.h"
  46 #include "intel_blit.h"
  47 #include "intel_batchbuffer.h"
  48 #include "intel_pixel.h"
  49 #include "intel_span.h"
  50 #include "tnl/t_pipeline.h"
  51
  52 #include "utils.h"
  53
  54
  55 /***************************************
  56  * Mesa's Driver Functions
  57  ***************************************/
  58
  59 static void brwUseProgram(GLcontext *ctx, GLuint program)
  60 {
  61    _mesa_use_program(ctx, program);
  62 }
  63
  64 static void brwInitProgFuncs( struct dd_function_table *functions )
  65 {
  66    functions->UseProgram = brwUseProgram;
  67 }
  68 static void brwInitDriverFunctions( struct dd_function_table *functions )
  69 {
  70    intelInitDriverFunctions( functions );
  71
  72    brwInitFragProgFuncs( functions );
  73    brwInitProgFuncs( functions );
  74    brw_init_queryobj_functions(functions);
  75
  76    functions->Viewport = intel_viewport;
  77 }
  78
  79
  80 static void brw_init_attribs( struct brw_context *brw )
  81 {
  82    GLcontext *ctx = &brw->intel.ctx;
  83
  84    brw->attribs.Color = &ctx->Color;
  85    brw->attribs.Depth = &ctx->Depth;
  86    brw->attribs.Fog = &ctx->Fog;
  87    brw->attribs.Hint = &ctx->Hint;
  88    brw->attribs.Light = &ctx->Light;
  89    brw->attribs.Line = &ctx->Line;
  90    brw->attribs.Point = &ctx->Point;
  91    brw->attribs.Polygon = &ctx->Polygon;
  92    brw->attribs.Scissor = &ctx->Scissor;
  93    brw->attribs.Stencil = &ctx->Stencil;
  94    brw->attribs.Texture = &ctx->Texture;
  95    brw->attribs.Transform = &ctx->Transform;
  96    brw->attribs.Viewport = &ctx->Viewport;
  97    brw->attribs.VertexProgram = &ctx->VertexProgram;
  98    brw->attribs.FragmentProgram = &ctx->FragmentProgram;
  99    brw->attribs.PolygonStipple = &ctx->PolygonStipple[0];
 100 }
 101
 102
 103 GLboolean brwCreateContext( const __GLcontextModes *mesaVis,
 104                             __DRIcontextPrivate *driContextPriv,
 105                             void *sharedContextPrivate)
 106 {
 107    struct dd_function_table functions;
 108    struct brw_context *brw = (struct brw_context *) CALLOC_STRUCT(brw_context);
 109    struct intel_context *intel = &brw->intel;
 110    GLcontext *ctx = &intel->ctx;
 111
 112    if (!brw) {
 113       _mesa_printf("%s: failed to alloc context\n", __FUNCTION__);
 114       return GL_FALSE;
 115    }
 116
 117    brwInitVtbl( brw );
 118    brwInitDriverFunctions( &functions );
 119
 120    if (!intelInitContext( intel, mesaVis, driContextPriv,
 121                           sharedContextPrivate, &functions )) {
 122       _mesa_printf("%s: failed to init intel context\n", __FUNCTION__);
 123       FREE(brw);
 124       return GL_FALSE;
 125    }
 126
 127    /* Initialize swrast, tnl driver tables: */
 128    intelInitSpanFuncs(ctx);
 129
 130    TNL_CONTEXT(ctx)->Driver.RunPipeline = _tnl_run_pipeline;
 131
 132    ctx->Const.MaxTextureImageUnits = BRW_MAX_TEX_UNIT;
 133    ctx->Const.MaxTextureCoordUnits = 8; /* Mesa limit */
 134    ctx->Const.MaxTextureUnits = MIN2(ctx->Const.MaxTextureCoordUnits,
 135                                      ctx->Const.MaxTextureImageUnits);
 136    ctx->Const.MaxVertexTextureImageUnits = 0; /* no vertex shader textures */
 137
 138    /* Mesa limits textures to 4kx4k; it would be nice to fix that someday
 139     */
 140    ctx->Const.MaxTextureLevels = 13;
 141    ctx->Const.Max3DTextureLevels = 9;
 142    ctx->Const.MaxCubeTextureLevels = 12;
 143    ctx->Const.MaxTextureRectSize = (1<<12);
 144
 145    /* if conformance mode is set, swrast can handle any size AA point */
 146    ctx->Const.MaxPointSizeAA = 255.0;
 147
 148 /*    ctx->Const.MaxNativeVertexProgramTemps = 32; */
 149
 150    brw_init_attribs( brw );
 151    brw_init_state( brw );
 152
 153    brw->state.dirty.mesa = ~0;
 154    brw->state.dirty.brw = ~0;
 155
 156    brw->emit_state_always = 0;
 157
 158    ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 159    ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 160
 161    make_empty_list(&brw->query.active_head);
 162
 163    brw_draw_init( brw );
 164
 165    return GL_TRUE;
 166 }
 167