src/mesa/drivers/dri/i915/i915_context.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * 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, sub license, 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 portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "i915_context.h"
  29 #include "imports.h"
  30 #include "intel_tex.h"
  31 #include "intel_tris.h"
  32 #include "tnl/t_context.h"
  33 #include "tnl/t_pipeline.h"
  34 #include "tnl/t_vertex.h"
  35
  36 #include "swrast/swrast.h"
  37 #include "swrast_setup/swrast_setup.h"
  38 #include "tnl/tnl.h"
  39 #include "array_cache/acache.h"
  40
  41 #include "utils.h"
  42 #include "i915_reg.h"
  43
  44 /***************************************
  45  * Mesa's Driver Functions
  46  ***************************************/
  47
  48 static const struct dri_extension i915_extensions[] =
  49 {
  50     { "GL_ARB_depth_texture",              NULL },
  51     { "GL_ARB_fragment_program",           NULL },
  52     { "GL_ARB_shadow",                     NULL },
  53     { "GL_EXT_shadow_funcs",               NULL },
  54     /* ARB extn won't work if not enabled */
  55     { "GL_SGIX_depth_texture",             NULL },
  56     { NULL,                                NULL }
  57 };
  58
  59 /* Override intel default.
  60  */
  61 static void i915InvalidateState( GLcontext *ctx, GLuint new_state )
  62 {
  63    _swrast_InvalidateState( ctx, new_state );
  64    _swsetup_InvalidateState( ctx, new_state );
  65    _ac_InvalidateState( ctx, new_state );
  66    _tnl_InvalidateState( ctx, new_state );
  67    _tnl_invalidate_vertex_state( ctx, new_state );
  68    INTEL_CONTEXT(ctx)->NewGLState |= new_state;
  69
  70    /* Todo: gather state values under which tracked parameters become
  71     * invalidated, add callbacks for things like
  72     * ProgramLocalParameters, etc.
  73     */
  74    {
  75       struct i915_fragment_program *p =
  76          (struct i915_fragment_program *)ctx->FragmentProgram._Current;
  77       if (p && p->nr_params)
  78          p->params_uptodate = 0;
  79    }
  80
  81    if (new_state & (_NEW_FOG|_NEW_HINT|_NEW_PROGRAM))
  82       i915_update_fog(ctx);
  83 }
  84
  85
  86 static void i915InitDriverFunctions( struct dd_function_table *functions )
  87 {
  88    intelInitDriverFunctions( functions );
  89    i915InitStateFunctions( functions );
  90    i915InitTextureFuncs( functions );
  91    i915InitFragProgFuncs( functions );
  92    functions->UpdateState = i915InvalidateState;
  93 }
  94
  95
  96
  97 GLboolean i915CreateContext( const __GLcontextModes *mesaVis,
  98                             __DRIcontextPrivate *driContextPriv,
  99                             void *sharedContextPrivate)
 100 {
 101    struct dd_function_table functions;
 102    i915ContextPtr i915 = (i915ContextPtr) CALLOC_STRUCT(i915_context);
 103    intelContextPtr intel = &i915->intel;
 104    GLcontext *ctx = &intel->ctx;
 105
 106    if (!i915) return GL_FALSE;
 107
 108    i915InitVtbl( i915 );
 109
 110    i915InitDriverFunctions( &functions );
 111
 112    if (!intelInitContext( intel, mesaVis, driContextPriv,
 113                           sharedContextPrivate, &functions )) {
 114       FREE(i915);
 115       return GL_FALSE;
 116    }
 117
 118    ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
 119    ctx->Const.MaxTextureImageUnits = I915_TEX_UNITS;
 120    ctx->Const.MaxTextureCoordUnits = I915_TEX_UNITS;
 121
 122    intel->nr_heaps = 1;
 123    intel->texture_heaps[0] =
 124       driCreateTextureHeap( 0, intel,
 125                             intel->intelScreen->tex.size,
 126                             12,
 127                             I830_NR_TEX_REGIONS,
 128                             intel->sarea->texList,
 129                             & intel->sarea->texAge,
 130                             & intel->swapped,
 131                             sizeof( struct i915_texture_object ),
 132                             (destroy_texture_object_t *)intelDestroyTexObj );
 133
 134    /* FIXME: driCalculateMaxTextureLevels assumes that mipmaps are
 135     * tightly packed, but they're not in Intel graphics
 136     * hardware.
 137     */
 138    ctx->Const.MaxTextureUnits = 1;
 139    driCalculateMaxTextureLevels( intel->texture_heaps,
 140                                  intel->nr_heaps,
 141                                  &intel->ctx.Const,
 142                                  4,
 143                                  11, /* max 2D texture size is 2048x2048 */
 144                                  8,  /* 3D texture */
 145                                  11, /* cube texture. */
 146                                  11, /* rect texture */
 147                                  12,
 148                                  GL_FALSE );
 149    ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
 150
 151    /* GL_ARB_fragment_program limits - don't think Mesa actually
 152     * validates programs against these, and in any case one ARB
 153     * instruction can translate to more than one HW instruction, so
 154     * we'll still have to check and fallback each time.
 155     */
 156
 157    ctx->Const.MaxFragmentProgramTemps = I915_MAX_TEMPORARY;
 158    ctx->Const.MaxFragmentProgramAttribs = 11; /* 8 tex, 2 color, fog */
 159    ctx->Const.MaxFragmentProgramLocalParams = I915_MAX_CONSTANT;
 160    ctx->Const.MaxFragmentProgramEnvParams = I915_MAX_CONSTANT;
 161    ctx->Const.MaxFragmentProgramAluInstructions = I915_MAX_ALU_INSN;
 162    ctx->Const.MaxFragmentProgramTexInstructions = I915_MAX_TEX_INSN;
 163    ctx->Const.MaxFragmentProgramInstructions = (I915_MAX_ALU_INSN +
 164                                                 I915_MAX_TEX_INSN);
 165    ctx->Const.MaxFragmentProgramTexIndirections = I915_MAX_TEX_INDIRECT;
 166    ctx->Const.MaxFragmentProgramAddressRegs = 0; /* I don't think we have one */
 167
 168
 169    driInitExtensions( ctx, i915_extensions, GL_FALSE );
 170
 171
 172    _tnl_init_vertices( ctx, ctx->Const.MaxArrayLockSize + 12,
 173                        36 * sizeof(GLfloat) );
 174
 175    intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
 176
 177    i915InitState( i915 );
 178
 179    return GL_TRUE;
 180 }
 181