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 "vbo/vbo.h"
  40
  41
  42 #include "utils.h"
  43 #include "i915_reg.h"
  44
  45 /***************************************
  46  * Mesa's Driver Functions
  47  ***************************************/
  48
  49 static const struct dri_extension i915_extensions[] =
  50 {
  51     { "GL_ARB_depth_texture",              NULL },
  52     { "GL_ARB_fragment_program",           NULL },
  53     { "GL_ARB_shadow",                     NULL },
  54     { "GL_ARB_texture_env_crossbar",       NULL },
  55     { "GL_EXT_shadow_funcs",               NULL },
  56     /* ARB extn won't work if not enabled */
  57     { "GL_SGIX_depth_texture",             NULL },
  58     { NULL,                                NULL }
  59 };
  60
  61 /* Override intel default.
  62  */
  63 static void i915InvalidateState( GLcontext *ctx, GLuint new_state )
  64 {
  65    _swrast_InvalidateState( ctx, new_state );
  66    _swsetup_InvalidateState( ctx, new_state );
  67    _vbo_InvalidateState( ctx, new_state );
  68    _tnl_InvalidateState( ctx, new_state );
  69    _tnl_invalidate_vertex_state( ctx, new_state );
  70    INTEL_CONTEXT(ctx)->NewGLState |= new_state;
  71
  72    /* Todo: gather state values under which tracked parameters become
  73     * invalidated, add callbacks for things like
  74     * ProgramLocalParameters, etc.
  75     */
  76    {
  77       struct i915_fragment_program *p =
  78          (struct i915_fragment_program *)ctx->FragmentProgram._Current;
  79       if (p && p->nr_params)
  80          p->params_uptodate = 0;
  81    }
  82
  83    if (new_state & (_NEW_FOG|_NEW_HINT|_NEW_PROGRAM))
  84       i915_update_fog(ctx);
  85 }
  86
  87
  88 static void i915InitDriverFunctions( struct dd_function_table *functions )
  89 {
  90    intelInitDriverFunctions( functions );
  91    i915InitStateFunctions( functions );
  92    i915InitTextureFuncs( functions );
  93    i915InitFragProgFuncs( functions );
  94    functions->UpdateState = i915InvalidateState;
  95 }
  96
  97
  98
  99 GLboolean i915CreateContext( const __GLcontextModes *mesaVis,
 100                             __DRIcontextPrivate *driContextPriv,
 101                             void *sharedContextPrivate)
 102 {
 103    struct dd_function_table functions;
 104    i915ContextPtr i915 = (i915ContextPtr) CALLOC_STRUCT(i915_context);
 105    intelContextPtr intel = &i915->intel;
 106    GLcontext *ctx = &intel->ctx;
 107    GLuint i;
 108
 109    if (!i915) return GL_FALSE;
 110
 111    i915InitVtbl( i915 );
 112
 113    i915InitDriverFunctions( &functions );
 114
 115    if (!intelInitContext( intel, mesaVis, driContextPriv,
 116                           sharedContextPrivate, &functions )) {
 117       FREE(i915);
 118       return GL_FALSE;
 119    }
 120
 121    ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
 122    ctx->Const.MaxTextureImageUnits = I915_TEX_UNITS;
 123    ctx->Const.MaxTextureCoordUnits = I915_TEX_UNITS;
 124
 125    intel->nr_heaps = 1;
 126    intel->texture_heaps[0] =
 127       driCreateTextureHeap( 0, intel,
 128                             intel->intelScreen->tex.size,
 129                             12,
 130                             I830_NR_TEX_REGIONS,
 131                             intel->sarea->texList,
 132                             (unsigned *) & intel->sarea->texAge,
 133                             & intel->swapped,
 134                             sizeof( struct i915_texture_object ),
 135                             (destroy_texture_object_t *)intelDestroyTexObj );
 136
 137    /* FIXME: driCalculateMaxTextureLevels assumes that mipmaps are
 138     * tightly packed, but they're not in Intel graphics
 139     * hardware.
 140     */
 141    ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
 142    i = driQueryOptioni( &intel->optionCache, "allow_large_textures");
 143    driCalculateMaxTextureLevels( intel->texture_heaps,
 144                                  intel->nr_heaps,
 145                                  &intel->ctx.Const,
 146                                  4,
 147                                  11, /* max 2D texture size is 2048x2048 */
 148                                  8,  /* 3D texture */
 149                                  11, /* cube texture. */
 150                                  11, /* rect texture */
 151                                  12,
 152                                  GL_FALSE,
 153                                  i );
 154
 155    /* GL_ARB_fragment_program limits - don't think Mesa actually
 156     * validates programs against these, and in any case one ARB
 157     * instruction can translate to more than one HW instruction, so
 158     * we'll still have to check and fallback each time.
 159     */
 160
 161    ctx->Const.FragmentProgram.MaxNativeTemps = I915_MAX_TEMPORARY;
 162    ctx->Const.FragmentProgram.MaxNativeAttribs = 11; /* 8 tex, 2 color, fog */
 163    ctx->Const.FragmentProgram.MaxNativeParameters = I915_MAX_CONSTANT;
 164    ctx->Const.FragmentProgram.MaxNativeAluInstructions = I915_MAX_ALU_INSN;
 165    ctx->Const.FragmentProgram.MaxNativeTexInstructions = I915_MAX_TEX_INSN;
 166    ctx->Const.FragmentProgram.MaxNativeInstructions = (I915_MAX_ALU_INSN +
 167                                                 I915_MAX_TEX_INSN);
 168    ctx->Const.FragmentProgram.MaxNativeTexIndirections = I915_MAX_TEX_INDIRECT;
 169    ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0; /* I don't think we have one */
 170    ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 171    ctx->FragmentProgram._UseTexEnvProgram = GL_TRUE;
 172
 173
 174    driInitExtensions( ctx, i915_extensions, GL_FALSE );
 175
 176
 177    _tnl_init_vertices( ctx, ctx->Const.MaxArrayLockSize + 12,
 178                        36 * sizeof(GLfloat) );
 179
 180    intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
 181
 182    i915InitState( i915 );
 183
 184    return GL_TRUE;
 185 }
 186