src/mesa/drivers/dri/r300/r300_context.c

   1 /*
   2 Copyright (C) The Weather Channel, Inc.  2002.  All Rights Reserved.
   3
   4 The Weather Channel (TM) funded Tungsten Graphics to develop the
   5 initial release of the Radeon 8500 driver under the XFree86 license.
   6 This notice must be preserved.
   7
   8 Permission is hereby granted, free of charge, to any person obtaining
   9 a copy of this software and associated documentation files (the
  10 "Software"), to deal in the Software without restriction, including
  11 without limitation the rights to use, copy, modify, merge, publish,
  12 distribute, sublicense, and/or sell copies of the Software, and to
  13 permit persons to whom the Software is furnished to do so, subject to
  14 the following conditions:
  15
  16 The above copyright notice and this permission notice (including the
  17 next paragraph) shall be included in all copies or substantial
  18 portions of the Software.
  19
  20 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  23 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  24 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27
  28 **************************************************************************/
  29
  30 /**
  31  * \file
  32  *
  33  * \author Keith Whitwell <keith@tungstengraphics.com>
  34  *
  35  * \author Nicolai Haehnle <prefect_@gmx.net>
  36  */
  37
  38 #include "main/glheader.h"
  39 #include "main/api_arrayelt.h"
  40 #include "main/context.h"
  41 #include "main/simple_list.h"
  42 #include "main/imports.h"
  43 #include "main/extensions.h"
  44 #include "main/bufferobj.h"
  45 #include "main/texobj.h"
  46
  47 #include "swrast/swrast.h"
  48 #include "swrast_setup/swrast_setup.h"
  49 #include "vbo/vbo.h"
  50
  51 #include "tnl/tnl.h"
  52 #include "tnl/t_pipeline.h"
  53
  54 #include "drivers/common/driverfuncs.h"
  55
  56 #include "r300_context.h"
  57 #include "radeon_span.h"
  58 #include "r300_cmdbuf.h"
  59 #include "r300_state.h"
  60 #include "r300_ioctl.h"
  61 #include "r300_tex.h"
  62 #include "r300_emit.h"
  63 #include "r300_swtcl.h"
  64 #include "radeon_bocs_wrapper.h"
  65 #include "radeon_buffer_objects.h"
  66 #include "radeon_queryobj.h"
  67
  68 #include "utils.h"
  69 #include "xmlpool.h"            /* for symbolic values of enum-type options */
  70
  71 #define need_GL_VERSION_2_0
  72 #define need_GL_ARB_occlusion_query
  73 #define need_GL_ARB_point_parameters
  74 #define need_GL_ARB_vertex_program
  75 #define need_GL_EXT_blend_equation_separate
  76 #define need_GL_EXT_blend_func_separate
  77 #define need_GL_EXT_blend_minmax
  78 #define need_GL_EXT_framebuffer_blit
  79 #define need_GL_EXT_framebuffer_object
  80 #define need_GL_EXT_fog_coord
  81 #define need_GL_EXT_gpu_program_parameters
  82 #define need_GL_EXT_provoking_vertex
  83 #define need_GL_EXT_secondary_color
  84 #define need_GL_EXT_stencil_two_side
  85 #define need_GL_ATI_separate_stencil
  86 #define need_GL_NV_vertex_program
  87
  88 #include "main/remap_helper.h"
  89
  90
  91 static const struct dri_extension card_extensions[] = {
  92   /* *INDENT-OFF* */
  93   {"GL_ARB_depth_texture",              NULL},
  94   {"GL_ARB_fragment_program",           NULL},
  95   {"GL_ARB_occlusion_query",            GL_ARB_occlusion_query_functions},
  96   {"GL_ARB_multitexture",               NULL},
  97   {"GL_ARB_point_parameters",           GL_ARB_point_parameters_functions},
  98   {"GL_ARB_shadow",                     NULL},
  99   {"GL_ARB_shadow_ambient",             NULL},
 100   {"GL_ARB_texture_border_clamp",       NULL},
 101   {"GL_ARB_texture_cube_map",           NULL},
 102   {"GL_ARB_texture_env_add",            NULL},
 103   {"GL_ARB_texture_env_combine",        NULL},
 104   {"GL_ARB_texture_env_crossbar",       NULL},
 105   {"GL_ARB_texture_env_dot3",           NULL},
 106   {"GL_ARB_texture_mirrored_repeat",    NULL},
 107   {"GL_ARB_vertex_program",             GL_ARB_vertex_program_functions},
 108   {"GL_EXT_blend_equation_separate",    GL_EXT_blend_equation_separate_functions},
 109   {"GL_EXT_blend_func_separate",        GL_EXT_blend_func_separate_functions},
 110   {"GL_EXT_blend_minmax",               GL_EXT_blend_minmax_functions},
 111   {"GL_EXT_blend_subtract",             NULL},
 112   {"GL_EXT_packed_depth_stencil",       NULL},
 113   {"GL_EXT_fog_coord",                  GL_EXT_fog_coord_functions },
 114   {"GL_EXT_gpu_program_parameters",     GL_EXT_gpu_program_parameters_functions},
 115   {"GL_EXT_provoking_vertex",           GL_EXT_provoking_vertex_functions },
 116   {"GL_EXT_secondary_color",            GL_EXT_secondary_color_functions},
 117   {"GL_EXT_shadow_funcs",               NULL},
 118   {"GL_EXT_stencil_two_side",           GL_EXT_stencil_two_side_functions},
 119   {"GL_EXT_stencil_wrap",               NULL},
 120   {"GL_EXT_texture_edge_clamp",         NULL},
 121   {"GL_EXT_texture_env_combine",        NULL},
 122   {"GL_EXT_texture_env_dot3",           NULL},
 123   {"GL_EXT_texture_filter_anisotropic", NULL},
 124   {"GL_EXT_texture_lod_bias",           NULL},
 125   {"GL_EXT_texture_mirror_clamp",       NULL},
 126   {"GL_EXT_texture_rectangle",          NULL},
 127   {"GL_EXT_texture_sRGB",               NULL},
 128   {"GL_EXT_vertex_array_bgra",          NULL},
 129   {"GL_ATI_separate_stencil",           GL_ATI_separate_stencil_functions},
 130   {"GL_ATI_texture_env_combine3",       NULL},
 131   {"GL_ATI_texture_mirror_once",        NULL},
 132   {"GL_MESA_pack_invert",               NULL},
 133   {"GL_MESA_ycbcr_texture",             NULL},
 134   {"GL_MESAX_texture_float",            NULL},
 135   {"GL_NV_blend_square",                NULL},
 136   {"GL_NV_vertex_program",              GL_NV_vertex_program_functions},
 137   {"GL_SGIS_generate_mipmap",           NULL},
 138   {NULL,                                NULL}
 139   /* *INDENT-ON* */
 140 };
 141
 142
 143 static const struct dri_extension mm_extensions[] = {
 144   { "GL_EXT_framebuffer_blit",  GL_EXT_framebuffer_blit_functions },
 145   { "GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions },
 146   { NULL, NULL }
 147 };
 148
 149 /**
 150  * The GL 2.0 functions are needed to make display lists work with
 151  * functions added by GL_ATI_separate_stencil.
 152  */
 153 static const struct dri_extension gl_20_extension[] = {
 154   {"GL_VERSION_2_0",                    GL_VERSION_2_0_functions },
 155 };
 156
 157 static const struct tnl_pipeline_stage *r300_pipeline[] = {
 158         /* Catch any t&l fallbacks
 159          */
 160         &_tnl_vertex_transform_stage,
 161         &_tnl_normal_transform_stage,
 162         &_tnl_lighting_stage,
 163         &_tnl_fog_coordinate_stage,
 164         &_tnl_texgen_stage,
 165         &_tnl_texture_transform_stage,
 166         &_tnl_point_attenuation_stage,
 167         &_tnl_vertex_program_stage,
 168         &_tnl_render_stage,
 169         0,
 170 };
 171
 172 static void r300_get_lock(radeonContextPtr rmesa)
 173 {
 174         drm_radeon_sarea_t *sarea = rmesa->sarea;
 175
 176         if (sarea->ctx_owner != rmesa->dri.hwContext) {
 177                 sarea->ctx_owner = rmesa->dri.hwContext;
 178                 if (!rmesa->radeonScreen->kernel_mm)
 179                         radeon_bo_legacy_texture_age(rmesa->radeonScreen->bom);
 180         }
 181 }
 182
 183 static void r300_vtbl_emit_cs_header(struct radeon_cs *cs, radeonContextPtr rmesa)
 184 {
 185     /* please flush pipe do all pending work */
 186     radeon_cs_write_dword(cs, cmdpacket0(rmesa->radeonScreen,
 187                                   R300_SC_SCREENDOOR, 1));
 188     radeon_cs_write_dword(cs, 0x0);
 189     radeon_cs_write_dword(cs, cmdpacket0(rmesa->radeonScreen,
 190                                   R300_SC_SCREENDOOR, 1));
 191     radeon_cs_write_dword(cs, 0x00FFFFFF);
 192     radeon_cs_write_dword(cs, cmdpacket0(rmesa->radeonScreen,
 193                                   R300_SC_HYPERZ, 1));
 194     radeon_cs_write_dword(cs, 0x0);
 195     radeon_cs_write_dword(cs, cmdpacket0(rmesa->radeonScreen,
 196                                   R300_US_CONFIG, 1));
 197     radeon_cs_write_dword(cs, 0x0);
 198     radeon_cs_write_dword(cs, cmdpacket0(rmesa->radeonScreen,
 199                                   R300_ZB_CNTL, 1));
 200     radeon_cs_write_dword(cs, 0x0);
 201     radeon_cs_write_dword(cs, cmdwait(rmesa->radeonScreen, R300_WAIT_3D));
 202     radeon_cs_write_dword(cs, cmdpacket0(rmesa->radeonScreen,
 203                                   R300_RB3D_DSTCACHE_CTLSTAT, 1));
 204     radeon_cs_write_dword(cs, R300_RB3D_DSTCACHE_CTLSTAT_DC_FLUSH_FLUSH_DIRTY_3D);
 205     radeon_cs_write_dword(cs, cmdpacket0(rmesa->radeonScreen,
 206                                   R300_ZB_ZCACHE_CTLSTAT, 1));
 207     radeon_cs_write_dword(cs, R300_ZB_ZCACHE_CTLSTAT_ZC_FLUSH_FLUSH_AND_FREE);
 208     radeon_cs_write_dword(cs, cmdwait(rmesa->radeonScreen,
 209                                R300_WAIT_3D | R300_WAIT_3D_CLEAN));
 210 }
 211
 212 static void r300_vtbl_pre_emit_atoms(radeonContextPtr radeon)
 213 {
 214         BATCH_LOCALS(radeon);
 215
 216         cp_wait(radeon, R300_WAIT_3D | R300_WAIT_3D_CLEAN);
 217         BEGIN_BATCH_NO_AUTOSTATE(2);
 218         OUT_BATCH_REGVAL(R300_TX_INVALTAGS, R300_TX_FLUSH);
 219         END_BATCH();
 220         end_3d(radeon);
 221 }
 222
 223 static void r300_fallback(GLcontext *ctx, GLuint bit, GLboolean mode)
 224 {
 225         r300ContextPtr r300 = R300_CONTEXT(ctx);
 226         if (mode)
 227                 r300->radeon.Fallback |= bit;
 228         else
 229                 r300->radeon.Fallback &= ~bit;
 230 }
 231
 232 static void r300_emit_query_finish(radeonContextPtr radeon)
 233 {
 234         r300ContextPtr r300 = (r300ContextPtr)radeon;
 235         struct radeon_query_object *query = radeon->query.current;
 236         BATCH_LOCALS(radeon);
 237
 238         BEGIN_BATCH_NO_AUTOSTATE(3 * 2 *r300->radeon.radeonScreen->num_gb_pipes + 2);
 239         switch (r300->radeon.radeonScreen->num_gb_pipes) {
 240         case 4:
 241                 OUT_BATCH_REGVAL(R300_SU_REG_DEST, R300_RASTER_PIPE_SELECT_3);
 242                 OUT_BATCH_REGSEQ(R300_ZB_ZPASS_ADDR, 1);
 243                 OUT_BATCH_RELOC(0, query->bo, query->curr_offset+3*sizeof(uint32_t), 0, RADEON_GEM_DOMAIN_GTT, 0);
 244         case 3:
 245                 OUT_BATCH_REGVAL(R300_SU_REG_DEST, R300_RASTER_PIPE_SELECT_2);
 246                 OUT_BATCH_REGSEQ(R300_ZB_ZPASS_ADDR, 1);
 247                 OUT_BATCH_RELOC(0, query->bo, query->curr_offset+2*sizeof(uint32_t), 0, RADEON_GEM_DOMAIN_GTT, 0);
 248         case 2:
 249                 if (r300->radeon.radeonScreen->chip_family <= CHIP_FAMILY_RV380) {
 250                         OUT_BATCH_REGVAL(R300_SU_REG_DEST, R300_RASTER_PIPE_SELECT_3);
 251                 } else {
 252                         OUT_BATCH_REGVAL(R300_SU_REG_DEST, R300_RASTER_PIPE_SELECT_1);
 253                 }
 254                 OUT_BATCH_REGSEQ(R300_ZB_ZPASS_ADDR, 1);
 255                 OUT_BATCH_RELOC(0, query->bo, query->curr_offset+1*sizeof(uint32_t), 0, RADEON_GEM_DOMAIN_GTT, 0);
 256         case 1:
 257         default:
 258                 OUT_BATCH_REGVAL(R300_SU_REG_DEST, R300_RASTER_PIPE_SELECT_0);
 259                 OUT_BATCH_REGSEQ(R300_ZB_ZPASS_ADDR, 1);
 260                 OUT_BATCH_RELOC(0, query->bo, query->curr_offset, 0, RADEON_GEM_DOMAIN_GTT, 0);
 261                 break;
 262         }
 263         OUT_BATCH_REGVAL(R300_SU_REG_DEST, R300_RASTER_PIPE_SELECT_ALL);
 264         END_BATCH();
 265         query->curr_offset += r300->radeon.radeonScreen->num_gb_pipes * sizeof(uint32_t);
 266         assert(query->curr_offset < RADEON_QUERY_PAGE_SIZE);
 267         query->emitted_begin = GL_FALSE;
 268 }
 269
 270 static void rv530_emit_query_finish_single_z(radeonContextPtr radeon)
 271 {
 272         BATCH_LOCALS(radeon);
 273         struct radeon_query_object *query = radeon->query.current;
 274
 275         BEGIN_BATCH_NO_AUTOSTATE(8);
 276         OUT_BATCH_REGVAL(RV530_FG_ZBREG_DEST, RV530_FG_ZBREG_DEST_PIPE_SELECT_0);
 277         OUT_BATCH_REGSEQ(R300_ZB_ZPASS_ADDR, 1);
 278         OUT_BATCH_RELOC(0, query->bo, query->curr_offset, 0, RADEON_GEM_DOMAIN_GTT, 0);
 279         OUT_BATCH_REGVAL(RV530_FG_ZBREG_DEST, RV530_FG_ZBREG_DEST_PIPE_SELECT_ALL);
 280         END_BATCH();
 281
 282         query->curr_offset += sizeof(uint32_t);
 283         assert(query->curr_offset < RADEON_QUERY_PAGE_SIZE);
 284         query->emitted_begin = GL_FALSE;
 285 }
 286
 287 static void rv530_emit_query_finish_double_z(radeonContextPtr radeon)
 288 {
 289         BATCH_LOCALS(radeon);
 290         struct radeon_query_object *query = radeon->query.current;
 291
 292         BEGIN_BATCH_NO_AUTOSTATE(14);
 293         OUT_BATCH_REGVAL(RV530_FG_ZBREG_DEST, RV530_FG_ZBREG_DEST_PIPE_SELECT_0);
 294         OUT_BATCH_REGSEQ(R300_ZB_ZPASS_ADDR, 1);
 295         OUT_BATCH_RELOC(0, query->bo, query->curr_offset, 0, RADEON_GEM_DOMAIN_GTT, 0);
 296         OUT_BATCH_REGVAL(RV530_FG_ZBREG_DEST, RV530_FG_ZBREG_DEST_PIPE_SELECT_1);
 297         OUT_BATCH_REGSEQ(R300_ZB_ZPASS_ADDR, 1);
 298         OUT_BATCH_RELOC(0, query->bo, query->curr_offset + sizeof(uint32_t), 0, RADEON_GEM_DOMAIN_GTT, 0);
 299         OUT_BATCH_REGVAL(RV530_FG_ZBREG_DEST, RV530_FG_ZBREG_DEST_PIPE_SELECT_ALL);
 300         END_BATCH();
 301
 302         query->curr_offset += 2 * sizeof(uint32_t);
 303         assert(query->curr_offset < RADEON_QUERY_PAGE_SIZE);
 304         query->emitted_begin = GL_FALSE;
 305 }
 306
 307 static void r300_init_vtbl(radeonContextPtr radeon)
 308 {
 309         radeon->vtbl.get_lock = r300_get_lock;
 310         radeon->vtbl.update_viewport_offset = r300UpdateViewportOffset;
 311         radeon->vtbl.emit_cs_header = r300_vtbl_emit_cs_header;
 312         radeon->vtbl.swtcl_flush = r300_swtcl_flush;
 313         radeon->vtbl.pre_emit_atoms = r300_vtbl_pre_emit_atoms;
 314         radeon->vtbl.fallback = r300_fallback;
 315         if (radeon->radeonScreen->chip_family == CHIP_FAMILY_RV530) {
 316                 if (radeon->radeonScreen->num_z_pipes == 2)
 317                         radeon->vtbl.emit_query_finish = rv530_emit_query_finish_double_z;
 318                 else
 319                         radeon->vtbl.emit_query_finish = rv530_emit_query_finish_single_z;
 320         } else
 321                 radeon->vtbl.emit_query_finish = r300_emit_query_finish;
 322 }
 323
 324 static void r300InitConstValues(GLcontext *ctx, radeonScreenPtr screen)
 325 {
 326         r300ContextPtr r300 = R300_CONTEXT(ctx);
 327
 328         ctx->Const.MaxTextureImageUnits =
 329             driQueryOptioni(&r300->radeon.optionCache, "texture_image_units");
 330         ctx->Const.MaxTextureCoordUnits =
 331             driQueryOptioni(&r300->radeon.optionCache, "texture_coord_units");
 332         ctx->Const.MaxTextureUnits = MIN2(ctx->Const.MaxTextureImageUnits,
 333                  ctx->Const.MaxTextureCoordUnits);
 334
 335         ctx->Const.MaxTextureMaxAnisotropy = 16.0;
 336         ctx->Const.MaxTextureLodBias = 16.0;
 337
 338         if (screen->chip_family >= CHIP_FAMILY_RV515) {
 339                 ctx->Const.MaxTextureLevels = 13;
 340                 ctx->Const.MaxCubeTextureLevels = 13;
 341                 ctx->Const.MaxTextureRectSize = 4096;
 342         }
 343         else {
 344                 ctx->Const.MaxTextureLevels = 12;
 345                 ctx->Const.MaxCubeTextureLevels = 12;
 346                 ctx->Const.MaxTextureRectSize = 2048;
 347         }
 348
 349         ctx->Const.MinPointSize = 1.0;
 350         ctx->Const.MinPointSizeAA = 1.0;
 351         ctx->Const.MaxPointSize = R300_POINTSIZE_MAX;
 352         ctx->Const.MaxPointSizeAA = R300_POINTSIZE_MAX;
 353
 354         ctx->Const.MinLineWidth = 1.0;
 355         ctx->Const.MinLineWidthAA = 1.0;
 356         ctx->Const.MaxLineWidth = R300_LINESIZE_MAX;
 357         ctx->Const.MaxLineWidthAA = R300_LINESIZE_MAX;
 358
 359         ctx->Const.MaxDrawBuffers = 1;
 360
 361         /* currently bogus data */
 362         if (r300->options.hw_tcl_enabled) {
 363                 ctx->Const.VertexProgram.MaxNativeInstructions = VSF_MAX_FRAGMENT_LENGTH / 4;
 364                 ctx->Const.VertexProgram.MaxNativeAluInstructions = VSF_MAX_FRAGMENT_LENGTH / 4;
 365                 ctx->Const.VertexProgram.MaxNativeAttribs = 16; /* r420 */
 366                 ctx->Const.VertexProgram.MaxNativeTemps = 32;
 367                 ctx->Const.VertexProgram.MaxNativeParameters = 256;     /* r420 */
 368                 ctx->Const.VertexProgram.MaxNativeAddressRegs = 1;
 369         }
 370
 371         if (screen->chip_family >= CHIP_FAMILY_RV515) {
 372                 ctx->Const.FragmentProgram.MaxNativeTemps = R500_PFS_NUM_TEMP_REGS;
 373                 ctx->Const.FragmentProgram.MaxNativeAttribs = 11;       /* copy i915... */
 374
 375                 /* The hardware limits are higher than this,
 376                  * but the non-KMS DRM interface artificially limits us
 377                  * to this many instructions.
 378                  *
 379                  * We could of course work around it in the KMS path,
 380                  * but it would be a mess, so it seems wiser
 381                  * to leave it as is. Going forward, the Gallium driver
 382                  * will not be subject to these limitations.
 383                  */
 384                 ctx->Const.FragmentProgram.MaxNativeParameters = 255;
 385                 ctx->Const.FragmentProgram.MaxNativeAluInstructions = 255;
 386                 ctx->Const.FragmentProgram.MaxNativeTexInstructions = 255;
 387                 ctx->Const.FragmentProgram.MaxNativeInstructions = 255;
 388                 ctx->Const.FragmentProgram.MaxNativeTexIndirections = 255;
 389                 ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0;
 390         } else {
 391                 ctx->Const.FragmentProgram.MaxNativeTemps = R300_PFS_NUM_TEMP_REGS;
 392                 ctx->Const.FragmentProgram.MaxNativeAttribs = 11;       /* copy i915... */
 393                 ctx->Const.FragmentProgram.MaxNativeParameters = R300_PFS_NUM_CONST_REGS;
 394                 ctx->Const.FragmentProgram.MaxNativeAluInstructions = R300_PFS_MAX_ALU_INST;
 395                 ctx->Const.FragmentProgram.MaxNativeTexInstructions = R300_PFS_MAX_TEX_INST;
 396                 ctx->Const.FragmentProgram.MaxNativeInstructions = R300_PFS_MAX_ALU_INST + R300_PFS_MAX_TEX_INST;
 397                 ctx->Const.FragmentProgram.MaxNativeTexIndirections = R300_PFS_MAX_TEX_INDIRECT;
 398                 ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0;
 399         }
 400
 401 }
 402
 403 static void r300ParseOptions(r300ContextPtr r300, radeonScreenPtr screen)
 404 {
 405         struct r300_options options = { 0 };
 406
 407         driParseConfigFiles(&r300->radeon.optionCache, &screen->optionCache,
 408                             screen->driScreen->myNum, "r300");
 409
 410         r300->radeon.initialMaxAnisotropy = driQueryOptionf(&r300->radeon.optionCache, "def_max_anisotropy");
 411
 412         options.stencil_two_side_disabled = driQueryOptionb(&r300->radeon.optionCache, "disable_stencil_two_side");
 413         options.s3tc_force_enabled = driQueryOptionb(&r300->radeon.optionCache, "force_s3tc_enable");
 414         options.s3tc_force_disabled = driQueryOptionb(&r300->radeon.optionCache, "disable_s3tc");
 415
 416         if (!(screen->chip_flags & RADEON_CHIPSET_TCL) || driQueryOptioni(&r300->radeon.optionCache, "tcl_mode") == DRI_CONF_TCL_SW)
 417                 options.hw_tcl_enabled = 0;
 418         else
 419                 options.hw_tcl_enabled = 1;
 420
 421         options.conformance_mode = !driQueryOptionb(&r300->radeon.optionCache, "disable_lowimpact_fallback");
 422
 423         r300->options = options;
 424 }
 425
 426 static void r300InitGLExtensions(GLcontext *ctx)
 427 {
 428         r300ContextPtr r300 = R300_CONTEXT(ctx);
 429
 430         driInitExtensions(ctx, card_extensions, GL_TRUE);
 431         if (r300->radeon.radeonScreen->kernel_mm)
 432                 driInitExtensions(ctx, mm_extensions, GL_FALSE);
 433
 434         if (r300->options.stencil_two_side_disabled)
 435                 _mesa_disable_extension(ctx, "GL_EXT_stencil_two_side");
 436
 437         if (r300->options.s3tc_force_disabled) {
 438                 _mesa_disable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 439         } else if (ctx->Mesa_DXTn || r300->options.s3tc_force_enabled) {
 440                 _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 441                 _mesa_enable_extension(ctx, "GL_S3_s3tc");
 442         }
 443
 444         if (!r300->radeon.radeonScreen->drmSupportsOcclusionQueries) {
 445                 _mesa_disable_extension(ctx, "GL_ARB_occlusion_query");
 446         }
 447 }
 448
 449 /* Create the device specific rendering context.
 450  */
 451 GLboolean r300CreateContext(const __GLcontextModes * glVisual,
 452                             __DRIcontextPrivate * driContextPriv,
 453                             void *sharedContextPrivate)
 454 {
 455         __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 456         radeonScreenPtr screen = (radeonScreenPtr) (sPriv->private);
 457         struct dd_function_table functions;
 458         r300ContextPtr r300;
 459         GLcontext *ctx;
 460
 461         assert(glVisual);
 462         assert(driContextPriv);
 463         assert(screen);
 464
 465         r300 = (r300ContextPtr) CALLOC(sizeof(*r300));
 466         if (!r300)
 467                 return GL_FALSE;
 468
 469         r300ParseOptions(r300, screen);
 470
 471         r300->radeon.radeonScreen = screen;
 472         r300_init_vtbl(&r300->radeon);
 473
 474         _mesa_init_driver_functions(&functions);
 475         r300InitIoctlFuncs(&functions);
 476         r300InitStateFuncs(&functions);
 477         r300InitTextureFuncs(&functions);
 478         r300InitShaderFuncs(&functions);
 479         radeonInitQueryObjFunctions(&functions);
 480         radeonInitBufferObjectFuncs(&functions);
 481
 482         if (!radeonInitContext(&r300->radeon, &functions,
 483                                glVisual, driContextPriv,
 484                                sharedContextPrivate)) {
 485                 FREE(r300);
 486                 return GL_FALSE;
 487         }
 488
 489         ctx = r300->radeon.glCtx;
 490
 491         r300->fallback = 0;
 492         if (r300->options.hw_tcl_enabled)
 493                 ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 494
 495         ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 496
 497         r300InitConstValues(ctx, screen);
 498
 499         _mesa_set_mvp_with_dp4( ctx, GL_TRUE );
 500
 501         /* Initialize the software rasterizer and helper modules.
 502          */
 503         _swrast_CreateContext(ctx);
 504         _vbo_CreateContext(ctx);
 505         _tnl_CreateContext(ctx);
 506         _swsetup_CreateContext(ctx);
 507         _swsetup_Wakeup(ctx);
 508
 509         /* Install the customized pipeline:
 510          */
 511         _tnl_destroy_pipeline(ctx);
 512         _tnl_install_pipeline(ctx, r300_pipeline);
 513         TNL_CONTEXT(ctx)->Driver.RunPipeline = _tnl_run_pipeline;
 514
 515         /* Configure swrast and TNL to match hardware characteristics:
 516          */
 517         _swrast_allow_pixel_fog(ctx, GL_FALSE);
 518         _swrast_allow_vertex_fog(ctx, GL_TRUE);
 519         _tnl_allow_pixel_fog(ctx, GL_FALSE);
 520         _tnl_allow_vertex_fog(ctx, GL_TRUE);
 521
 522         if (r300->options.hw_tcl_enabled) {
 523                 r300InitDraw(ctx);
 524         } else {
 525                 r300InitSwtcl(ctx);
 526         }
 527
 528         radeon_fbo_init(&r300->radeon);
 529         radeonInitSpanFuncs( ctx );
 530         r300InitCmdBuf(r300);
 531         r300InitState(r300);
 532         r300InitShaderFunctions(r300);
 533
 534         r300InitGLExtensions(ctx);
 535
 536         return GL_TRUE;
 537 }
 538