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 GLboolean brwCreateContext( const __GLcontextModes *mesaVis,
  80                             __DRIcontextPrivate *driContextPriv,
  81                             void *sharedContextPrivate)
  82 {
  83    struct dd_function_table functions;
  84    struct brw_context *brw = (struct brw_context *) CALLOC_STRUCT(brw_context);
  85    struct intel_context *intel = &brw->intel;
  86    GLcontext *ctx = &intel->ctx;
  87
  88    if (!brw) {
  89       _mesa_printf("%s: failed to alloc context\n", __FUNCTION__);
  90       return GL_FALSE;
  91    }
  92
  93    brwInitVtbl( brw );
  94    brwInitDriverFunctions( &functions );
  95
  96    if (!intelInitContext( intel, mesaVis, driContextPriv,
  97                           sharedContextPrivate, &functions )) {
  98       _mesa_printf("%s: failed to init intel context\n", __FUNCTION__);
  99       FREE(brw);
 100       return GL_FALSE;
 101    }
 102
 103    /* Initialize swrast, tnl driver tables: */
 104    intelInitSpanFuncs(ctx);
 105
 106    TNL_CONTEXT(ctx)->Driver.RunPipeline = _tnl_run_pipeline;
 107
 108    ctx->Const.MaxTextureImageUnits = BRW_MAX_TEX_UNIT;
 109    ctx->Const.MaxTextureCoordUnits = 8; /* Mesa limit */
 110    ctx->Const.MaxTextureUnits = MIN2(ctx->Const.MaxTextureCoordUnits,
 111                                      ctx->Const.MaxTextureImageUnits);
 112    ctx->Const.MaxVertexTextureImageUnits = 0; /* no vertex shader textures */
 113
 114    /* Mesa limits textures to 4kx4k; it would be nice to fix that someday
 115     */
 116    ctx->Const.MaxTextureLevels = 13;
 117    ctx->Const.Max3DTextureLevels = 9;
 118    ctx->Const.MaxCubeTextureLevels = 12;
 119    ctx->Const.MaxTextureRectSize = (1<<12);
 120
 121    /* if conformance mode is set, swrast can handle any size AA point */
 122    ctx->Const.MaxPointSizeAA = 255.0;
 123
 124    /* We want the GLSL compiler to emit code that uses condition codes */
 125    ctx->Shader.EmitCondCodes = GL_TRUE;
 126
 127 /*    ctx->Const.MaxNativeVertexProgramTemps = 32; */
 128
 129    brw_init_state( brw );
 130
 131    brw->state.dirty.mesa = ~0;
 132    brw->state.dirty.brw = ~0;
 133
 134    brw->emit_state_always = 0;
 135
 136    ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 137    ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 138
 139    make_empty_list(&brw->query.active_head);
 140
 141    brw_draw_init( brw );
 142
 143    return GL_TRUE;
 144 }
 145