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 char * const card_extensions[] =
  49 {
  50    "GL_ARB_fragment_program",
  51    NULL
  52 };
  53
  54 /* Override intel default.
  55  */
  56 static void i915InvalidateState( GLcontext *ctx, GLuint new_state )
  57 {
  58    _swrast_InvalidateState( ctx, new_state );
  59    _swsetup_InvalidateState( ctx, new_state );
  60    _ac_InvalidateState( ctx, new_state );
  61    _tnl_InvalidateState( ctx, new_state );
  62    _tnl_invalidate_vertex_state( ctx, new_state );
  63    INTEL_CONTEXT(ctx)->NewGLState |= new_state;
  64
  65    /* Todo: gather state values under which tracked parameters become
  66     * invalidated, add callbacks for things like
  67     * ProgramLocalParameters, etc.
  68     */
  69    {
  70       struct i915_fragment_program *p =
  71          (struct i915_fragment_program *)ctx->FragmentProgram.Current;
  72       if (p->nr_params)
  73          p->params_uptodate = 0;
  74    }
  75
  76 }
  77
  78 /* This is the extension list explicitly enabled by the client and
  79  * excludes functionality available in Mesa and also excludes legacy
  80  * extensions.  It is recognized that in an open source driver, those
  81  * extensions will probably be re-enabled.
  82  */
  83 static const GLubyte *i915GetString( GLcontext *ctx, GLenum name )
  84 {
  85    if (name == GL_EXTENSIONS)
  86       return
  87          "GL_ARB_fragment_program "
  88          "GL_ARB_multitexture "
  89          "GL_ARB_point_parameters "
  90          "GL_ARB_texture_border_clamp "
  91          "GL_ARB_texture_compression "
  92          "GL_ARB_texture_cube_map "
  93          "GL_ARB_texture_env_add "
  94          "GL_ARB_texture_env_combine "
  95          "GL_ARB_texture_env_dot3 "
  96          "GL_ARB_texture_mirrored_repeat "
  97          "GL_ARB_transpose_matrix "
  98          "GL_ARB_vertex_buffer_object "
  99          "GL_ARB_vertex_program "
 100          "GL_ARB_window_pos "
 101          "GL_EXT_abgr "
 102          "GL_EXT_bgra "
 103          "GL_EXT_blend_color "
 104          "GL_EXT_blend_func_separate "
 105          "GL_EXT_blend_minmax "
 106          "GL_EXT_blend_subtract "
 107          "GL_EXT_clip_volume_hint "
 108          "GL_EXT_compiled_vertex_array "
 109          "GL_EXT_draw_range_elements "
 110          "GL_EXT_fog_coord "
 111          "GL_EXT_multi_draw_arrays "
 112          "GL_EXT_packed_pixels "
 113          "GL_EXT_rescale_normal "
 114          "GL_EXT_secondary_color "
 115          "GL_EXT_separate_specular_color "
 116          "GL_EXT_stencil_wrap "
 117          "GL_EXT_texture3D "
 118          "GL_EXT_texture_env_add "
 119          "GL_EXT_texture_env_combine "
 120          "GL_EXT_texture_filter_anisotropic "
 121          "GL_IBM_texture_mirrored_repeat "
 122          "GL_MESA_ycbcr_texture "
 123          "GL_MESA_window_pos "
 124          "GL_NV_texgen_reflection "
 125          "GL_SGIS_generate_mipmap";
 126
 127    return intelGetString( ctx, name );
 128 }
 129
 130
 131 static void i915InitDriverFunctions( struct dd_function_table *functions )
 132 {
 133    intelInitDriverFunctions( functions );
 134    i915InitStateFunctions( functions );
 135    i915InitTextureFuncs( functions );
 136    i915InitFragProgFuncs( functions );
 137    functions->UpdateState = i915InvalidateState;
 138    functions->GetString = i915GetString;
 139 }
 140
 141
 142
 143 GLboolean i915CreateContext( const __GLcontextModes *mesaVis,
 144                             __DRIcontextPrivate *driContextPriv,
 145                             void *sharedContextPrivate)
 146 {
 147    struct dd_function_table functions;
 148    i915ContextPtr i915 = (i915ContextPtr) CALLOC_STRUCT(i915_context);
 149    intelContextPtr intel = &i915->intel;
 150    GLcontext *ctx = &intel->ctx;
 151
 152    if (!i915) return GL_FALSE;
 153
 154    i915InitVtbl( i915 );
 155
 156    i915InitDriverFunctions( &functions );
 157
 158    if (!intelInitContext( intel, mesaVis, driContextPriv,
 159                           sharedContextPrivate, &functions )) {
 160       FREE(i915);
 161       return GL_FALSE;
 162    }
 163
 164    ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
 165    ctx->Const.MaxTextureImageUnits = I915_TEX_UNITS;
 166    ctx->Const.MaxTextureCoordUnits = I915_TEX_UNITS;
 167
 168    intel->nr_heaps = 1;
 169    intel->texture_heaps[0] =
 170       driCreateTextureHeap( 0, intel,
 171                             intel->intelScreen->textureSize,
 172                             12,
 173                             I830_NR_TEX_REGIONS,
 174                             intel->sarea->texList,
 175                             & intel->sarea->texAge,
 176                             & intel->swapped,
 177                             sizeof( struct i915_texture_object ),
 178                             (destroy_texture_object_t *)intelDestroyTexObj );
 179
 180    /* FIXME: driCalculateMaxTextureLevels assumes that mipmaps are tightly
 181     * FIXME: packed, but they're not in Intel graphics hardware.
 182     */
 183    ctx->Const.MaxTextureUnits = 1;
 184    driCalculateMaxTextureLevels( intel->texture_heaps,
 185                                  intel->nr_heaps,
 186                                  &intel->ctx.Const,
 187                                  4,
 188                                  11, /* max 2D texture size is 2048x2048 */
 189                                  8,  /* 3D texture */
 190                                  11, /* cube texture. */
 191                                  11, /* rect texture */
 192                                  12,
 193                                  GL_FALSE );
 194    ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
 195
 196    /* GL_ARB_fragment_program limits - don't think Mesa actually
 197     * validates programs against these, and in any case one ARB
 198     * instruction can translate to more than one HW instruction, so
 199     * we'll still have to check and fallback each time.
 200     */
 201
 202    ctx->Const.MaxFragmentProgramTemps = I915_MAX_TEMPORARY;
 203    ctx->Const.MaxFragmentProgramAttribs = 11; /* 8 tex, 2 color, fog */
 204    ctx->Const.MaxFragmentProgramLocalParams = I915_MAX_CONSTANT;
 205    ctx->Const.MaxFragmentProgramEnvParams = I915_MAX_CONSTANT;
 206    ctx->Const.MaxFragmentProgramAluInstructions = I915_MAX_ALU_INSN;
 207    ctx->Const.MaxFragmentProgramTexInstructions = I915_MAX_TEX_INSN;
 208    ctx->Const.MaxFragmentProgramInstructions = (I915_MAX_ALU_INSN +
 209                                                 I915_MAX_TEX_INSN);
 210    ctx->Const.MaxFragmentProgramTexIndirections = I915_MAX_TEX_INDIRECT;
 211    ctx->Const.MaxFragmentProgramAddressRegs = 0; /* I don't think we have one */
 212
 213
 214    driInitExtensions( ctx, card_extensions, GL_FALSE );
 215
 216
 217    _tnl_init_vertices( ctx, ctx->Const.MaxArrayLockSize + 12,
 218                        36 * sizeof(GLfloat) );
 219
 220    intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
 221
 222    i915InitState( i915 );
 223
 224    return GL_TRUE;
 225 }
 226