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 "brw_context.h"
  34 #include "brw_defines.h"
  35 #include "brw_draw.h"
  36 #include "brw_vs.h"
  37 #include "imports.h"
  38 #include "intel_tex.h"
  39 #include "intel_blit.h"
  40 #include "intel_batchbuffer.h"
  41
  42 #include "utils.h"
  43 #include "api_noop.h"
  44 #include "vtxfmt.h"
  45
  46 #include "shader/shader_api.h"
  47
  48 /***************************************
  49  * Mesa's Driver Functions
  50  ***************************************/
  51
  52 static const struct dri_extension brw_extensions[] =
  53 {
  54     { "GL_ARB_depth_texture",              NULL },
  55     { "GL_ARB_fragment_program",           NULL },
  56     { "GL_ARB_shadow",                     NULL },
  57     { "GL_EXT_shadow_funcs",               NULL },
  58     /* ARB extn won't work if not enabled */
  59     { "GL_SGIX_depth_texture",             NULL },
  60     { "GL_ARB_texture_env_crossbar",       NULL },
  61     { NULL,                                NULL }
  62 };
  63
  64 static void brwUseProgram(GLcontext *ctx, GLuint program)
  65 {
  66         struct brw_context *brw = brw_context(ctx);
  67         struct gl_shader_program *sh_prog;
  68         _mesa_use_program(ctx, program);
  69         sh_prog = ctx->Shader.CurrentProgram;
  70         if (sh_prog) {
  71             if (sh_prog->VertexProgram) {
  72                 brw->attribs.VertexProgram->Current = sh_prog->VertexProgram;
  73                 sh_prog->VertexProgram->Base.RefCount++;
  74                 ctx->VertexProgram.Enabled = GL_TRUE;
  75             }else
  76                 ctx->VertexProgram.Enabled = GL_FALSE;
  77
  78             if (sh_prog->FragmentProgram) {
  79                 brw->attribs.FragmentProgram->Current = sh_prog->FragmentProgram;
  80                 sh_prog->FragmentProgram->Base.RefCount++;
  81                 ctx->FragmentProgram.Enabled = GL_TRUE;
  82             } else
  83                 ctx->FragmentProgram.Enabled = GL_FALSE;
  84         }
  85 }
  86
  87 static void brwInitProgFuncs( struct dd_function_table *functions )
  88 {
  89    functions->UseProgram = brwUseProgram;
  90 }
  91 static void brwInitDriverFunctions( struct dd_function_table *functions )
  92 {
  93    intelInitDriverFunctions( functions );
  94    brwInitFragProgFuncs( functions );
  95    brwInitProgFuncs( functions );
  96 }
  97
  98
  99 static void brw_init_attribs( struct brw_context *brw )
 100 {
 101    GLcontext *ctx = &brw->intel.ctx;
 102
 103    brw->attribs.Color = &ctx->Color;
 104    brw->attribs.Depth = &ctx->Depth;
 105    brw->attribs.Fog = &ctx->Fog;
 106    brw->attribs.Hint = &ctx->Hint;
 107    brw->attribs.Light = &ctx->Light;
 108    brw->attribs.Line = &ctx->Line;
 109    brw->attribs.Point = &ctx->Point;
 110    brw->attribs.Polygon = &ctx->Polygon;
 111    brw->attribs.Scissor = &ctx->Scissor;
 112    brw->attribs.Stencil = &ctx->Stencil;
 113    brw->attribs.Texture = &ctx->Texture;
 114    brw->attribs.Transform = &ctx->Transform;
 115    brw->attribs.Viewport = &ctx->Viewport;
 116    brw->attribs.VertexProgram = &ctx->VertexProgram;
 117    brw->attribs.FragmentProgram = &ctx->FragmentProgram;
 118    brw->attribs.PolygonStipple = &ctx->PolygonStipple[0];
 119 }
 120
 121
 122 GLboolean brwCreateContext( const __GLcontextModes *mesaVis,
 123                             __DRIcontextPrivate *driContextPriv,
 124                             void *sharedContextPrivate)
 125 {
 126    struct dd_function_table functions;
 127    struct brw_context *brw = (struct brw_context *) CALLOC_STRUCT(brw_context);
 128    struct intel_context *intel = &brw->intel;
 129    GLcontext *ctx = &intel->ctx;
 130
 131    if (!brw) {
 132       _mesa_printf("%s: failed to alloc context\n", __FUNCTION__);
 133       return GL_FALSE;
 134    }
 135
 136    brwInitVtbl( brw );
 137    brwInitDriverFunctions( &functions );
 138
 139    if (!intelInitContext( intel, mesaVis, driContextPriv,
 140                           sharedContextPrivate, &functions )) {
 141       _mesa_printf("%s: failed to init intel context\n", __FUNCTION__);
 142       FREE(brw);
 143       return GL_FALSE;
 144    }
 145
 146    ctx->Const.MaxTextureUnits = BRW_MAX_TEX_UNIT;
 147    ctx->Const.MaxTextureImageUnits = BRW_MAX_TEX_UNIT;
 148    ctx->Const.MaxTextureCoordUnits = BRW_MAX_TEX_UNIT;
 149
 150
 151    /* Advertise the full hardware capabilities.  The new memory
 152     * manager should cope much better with overload situations:
 153     */
 154    ctx->Const.MaxTextureLevels = 12;
 155    ctx->Const.Max3DTextureLevels = 9;
 156    ctx->Const.MaxCubeTextureLevels = 12;
 157    ctx->Const.MaxTextureRectSize = (1<<11);
 158    ctx->Const.MaxTextureUnits = BRW_MAX_TEX_UNIT;
 159
 160 /*    ctx->Const.MaxNativeVertexProgramTemps = 32; */
 161
 162
 163    driInitExtensions( ctx, brw_extensions, GL_FALSE );
 164
 165    brw_init_attribs( brw );
 166    brw_init_metaops( brw );
 167    brw_init_state( brw );
 168
 169    brw->state.dirty.mesa = ~0;
 170    brw->state.dirty.brw = ~0;
 171
 172    memset(&brw->wm.bind, ~0, sizeof(brw->wm.bind));
 173
 174    brw->emit_state_always = 0;
 175
 176    ctx->FragmentProgram._MaintainTexEnvProgram = 1;
 177
 178    brw_draw_init( brw );
 179
 180    brw_ProgramCacheInit( ctx );
 181
 182    brw_FrameBufferTexInit( brw );
 183
 184    return GL_TRUE;
 185 }
 186