src/gallium/auxiliary/util/u_blitter.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 Marek Olšák <maraeo@gmail.com>
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sub license, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial portions
  15  * of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  20  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  21  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  22  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  23  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  **************************************************************************/
  26
  27 #ifndef U_BLITTER_H
  28 #define U_BLITTER_H
  29
  30 #include "util/u_framebuffer.h"
  31 #include "util/u_inlines.h"
  32
  33 #include "pipe/p_state.h"
  34
  35 #ifdef __cplusplus
  36 extern "C" {
  37 #endif
  38
  39 struct pipe_context;
  40
  41 enum blitter_attrib_type {
  42    UTIL_BLITTER_ATTRIB_NONE,
  43    UTIL_BLITTER_ATTRIB_COLOR,
  44    UTIL_BLITTER_ATTRIB_TEXCOORD_XY,
  45    UTIL_BLITTER_ATTRIB_TEXCOORD_XYZW,
  46 };
  47
  48 union blitter_attrib {
  49    float color[4];
  50
  51    struct {
  52       float x1, y1, x2, y2, z, w;
  53    } texcoord;
  54 };
  55
  56 struct blitter_context;
  57
  58 typedef void *(*blitter_get_vs_func)(struct blitter_context *blitter);
  59
  60 struct blitter_context
  61 {
  62    /**
  63     * Draw a rectangle.
  64     *
  65     * \param get_vs  Callback for obtaining the vertex shader for the draw call.
  66     *                It might invoke the shader compiler. The driver is
  67     *                responsible for setting the vertex shader, and the callback
  68     *                allows the driver to query the vertex shader CSO if it
  69     *                wants to use the default one.
  70     * \param x1      An X coordinate of the top-left corner.
  71     * \param y1      A Y coordinate of the top-left corner.
  72     * \param x2      An X coordinate of the bottom-right corner.
  73     * \param y2      A Y coordinate of the bottom-right corner.
  74     * \param depth   A depth which the rectangle is rendered at.
  75     *
  76     * \param type   Semantics of the attributes "attrib".
  77     *               If type is UTIL_BLITTER_ATTRIB_NONE, ignore them.
  78     *               If type is UTIL_BLITTER_ATTRIB_COLOR, the attributes
  79     *               make up a constant RGBA color, and should go
  80     *               to the GENERIC0 varying slot of a fragment shader.
  81     *               If type is UTIL_BLITTER_ATTRIB_TEXCOORD, {a1, a2} and
  82     *               {a3, a4} specify top-left and bottom-right texture
  83     *               coordinates of the rectangle, respectively, and should go
  84     *               to the GENERIC0 varying slot of a fragment shader.
  85     *
  86     * \param attrib See type.
  87     *
  88     * \note A driver may optionally override this callback to implement
  89     *       a specialized hardware path for drawing a rectangle, e.g. using
  90     *       a rectangular point sprite.
  91     */
  92    void (*draw_rectangle)(struct blitter_context *blitter,
  93                           void *vertex_elements_cso,
  94                           blitter_get_vs_func get_vs,
  95                           int x1, int y1, int x2, int y2,
  96                           float depth, unsigned num_instances,
  97                           enum blitter_attrib_type type,
  98                           const union blitter_attrib *attrib);
  99
 100    /* Whether the blitter is running. */
 101    bool running;
 102
 103    bool use_index_buffer;
 104
 105    /* Private members, really. */
 106    struct pipe_context *pipe; /**< pipe context */
 107
 108    void *saved_blend_state;   /**< blend state */
 109    void *saved_dsa_state;     /**< depth stencil alpha state */
 110    void *saved_velem_state;   /**< vertex elements state */
 111    void *saved_rs_state;      /**< rasterizer state */
 112    void *saved_fs, *saved_vs, *saved_gs, *saved_tcs, *saved_tes; /**< shaders */
 113
 114    struct pipe_framebuffer_state saved_fb_state;  /**< framebuffer state */
 115    struct pipe_stencil_ref saved_stencil_ref;     /**< stencil ref */
 116    struct pipe_viewport_state saved_viewport;
 117    struct pipe_scissor_state saved_scissor;
 118    bool skip_viewport_restore;
 119    bool is_sample_mask_saved;
 120    unsigned saved_sample_mask;
 121
 122    unsigned saved_num_sampler_states;
 123    void *saved_sampler_states[PIPE_MAX_SAMPLERS];
 124
 125    unsigned saved_num_sampler_views;
 126    struct pipe_sampler_view *saved_sampler_views[PIPE_MAX_SAMPLERS];
 127
 128    unsigned cb_slot;
 129    struct pipe_constant_buffer saved_fs_constant_buffer;
 130
 131    unsigned vb_slot;
 132    struct pipe_vertex_buffer saved_vertex_buffer;
 133
 134    unsigned saved_num_so_targets;
 135    struct pipe_stream_output_target *saved_so_targets[PIPE_MAX_SO_BUFFERS];
 136
 137    struct pipe_query *saved_render_cond_query;
 138    uint saved_render_cond_mode;
 139    bool saved_render_cond_cond;
 140
 141    boolean saved_window_rectangles_include;
 142    unsigned saved_num_window_rectangles;
 143    struct pipe_scissor_state saved_window_rectangles[PIPE_MAX_WINDOW_RECTANGLES];
 144 };
 145
 146 /**
 147  * Create a blitter context.
 148  */
 149 struct blitter_context *util_blitter_create(struct pipe_context *pipe);
 150
 151 /**
 152  * Destroy a blitter context.
 153  */
 154 void util_blitter_destroy(struct blitter_context *blitter);
 155
 156 void util_blitter_cache_all_shaders(struct blitter_context *blitter);
 157 void *util_blitter_get_noop_blend_state(struct blitter_context *blitter);
 158
 159
 160 /**
 161  * Return the pipe context associated with a blitter context.
 162  */
 163 static inline
 164 struct pipe_context *util_blitter_get_pipe(struct blitter_context *blitter)
 165 {
 166    return blitter->pipe;
 167 }
 168
 169 /**
 170  * Override PIPE_CAP_TEXTURE_MULTISAMPLE as reported by the driver.
 171  */
 172 void util_blitter_set_texture_multisample(struct blitter_context *blitter,
 173                                           bool supported);
 174
 175 /* The default function to draw a rectangle. This can only be used
 176  * inside of the draw_rectangle callback if the driver overrides it. */
 177 void util_blitter_draw_rectangle(struct blitter_context *blitter,
 178                                  void *vertex_elements_cso,
 179                                  blitter_get_vs_func get_vs,
 180                                  int x1, int y1, int x2, int y2,
 181                                  float depth, unsigned num_instances,
 182                                  enum blitter_attrib_type type,
 183                                  const union blitter_attrib *attrib);
 184
 185
 186 /*
 187  * These states must be saved before any of the following functions are called:
 188  * - vertex buffers
 189  * - vertex elements
 190  * - vertex shader
 191  * - geometry shader (if supported)
 192  * - stream output targets (if supported)
 193  * - rasterizer state
 194  */
 195
 196 /**
 197  * Clear a specified set of currently bound buffers to specified values.
 198  *
 199  * These states must be saved in the blitter in addition to the state objects
 200  * already required to be saved:
 201  * - fragment shader
 202  * - depth stencil alpha state
 203  * - blend state
 204  */
 205 void util_blitter_clear(struct blitter_context *blitter,
 206                         unsigned width, unsigned height, unsigned num_layers,
 207                         unsigned clear_buffers,
 208                         const union pipe_color_union *color,
 209                         double depth, unsigned stencil,
 210                         bool msaa);
 211
 212 /**
 213  * Check if the blitter (with the help of the driver) can blit between
 214  * the two resources.
 215  */
 216 bool util_blitter_is_copy_supported(struct blitter_context *blitter,
 217                                     const struct pipe_resource *dst,
 218                                     const struct pipe_resource *src);
 219
 220 bool util_blitter_is_blit_supported(struct blitter_context *blitter,
 221                                     const struct pipe_blit_info *info);
 222
 223 /**
 224  * Copy a block of pixels from one surface to another.
 225  *
 226  * These states must be saved in the blitter in addition to the state objects
 227  * already required to be saved:
 228  * - fragment shader
 229  * - depth stencil alpha state
 230  * - blend state
 231  * - fragment sampler states
 232  * - fragment sampler textures
 233  * - framebuffer state
 234  * - sample mask
 235  */
 236 void util_blitter_copy_texture(struct blitter_context *blitter,
 237                                struct pipe_resource *dst,
 238                                unsigned dst_level,
 239                                unsigned dstx, unsigned dsty, unsigned dstz,
 240                                struct pipe_resource *src,
 241                                unsigned src_level,
 242                                const struct pipe_box *srcbox);
 243
 244 /**
 245  * This is a generic implementation of pipe->blit, which accepts
 246  * sampler/surface views instead of resources.
 247  *
 248  * The layer and mipmap level are specified by the views.
 249  *
 250  * Drivers can use this to change resource properties (like format, width,
 251  * height) by changing how the views interpret them, instead of changing
 252  * pipe_resource directly. This is used to blit resources of formats which
 253  * are not renderable.
 254  *
 255  * src_width0 and src_height0 are sampler_view-private properties that
 256  * override pipe_resource. The blitter uses them for computation of texture
 257  * coordinates. The dst dimensions are supplied through pipe_surface::width
 258  * and height.
 259  *
 260  * The mask is a combination of the PIPE_MASK_* flags.
 261  * Set to PIPE_MASK_RGBAZS if unsure.
 262  */
 263 void util_blitter_blit_generic(struct blitter_context *blitter,
 264                                struct pipe_surface *dst,
 265                                const struct pipe_box *dstbox,
 266                                struct pipe_sampler_view *src,
 267                                const struct pipe_box *srcbox,
 268                                unsigned src_width0, unsigned src_height0,
 269                                unsigned mask, unsigned filter,
 270                                const struct pipe_scissor_state *scissor,
 271                                bool alpha_blend);
 272
 273 void util_blitter_blit(struct blitter_context *blitter,
 274                        const struct pipe_blit_info *info);
 275
 276 void util_blitter_generate_mipmap(struct blitter_context *blitter,
 277                                   struct pipe_resource *tex,
 278                                   enum pipe_format format,
 279                                   unsigned base_level, unsigned last_level,
 280                                   unsigned first_layer, unsigned last_layer);
 281
 282 /**
 283  * Helper function to initialize a view for copy_texture_view.
 284  * The parameters must match copy_texture_view.
 285  */
 286 void util_blitter_default_dst_texture(struct pipe_surface *dst_templ,
 287                                       struct pipe_resource *dst,
 288                                       unsigned dstlevel,
 289                                       unsigned dstz);
 290
 291 /**
 292  * Helper function to initialize a view for copy_texture_view.
 293  * The parameters must match copy_texture_view.
 294  */
 295 void util_blitter_default_src_texture(struct blitter_context *blitter,
 296                                       struct pipe_sampler_view *src_templ,
 297                                       struct pipe_resource *src,
 298                                       unsigned srclevel);
 299
 300 /**
 301  * Copy data from one buffer to another using the Stream Output functionality.
 302  * 4-byte alignment is required, otherwise software fallback is used.
 303  */
 304 void util_blitter_copy_buffer(struct blitter_context *blitter,
 305                               struct pipe_resource *dst,
 306                               unsigned dstx,
 307                               struct pipe_resource *src,
 308                               unsigned srcx,
 309                               unsigned size);
 310
 311 /**
 312  * Clear the contents of a buffer using the Stream Output functionality.
 313  * 4-byte alignment is required.
 314  *
 315  * "num_channels" can be 1, 2, 3, or 4, and specifies if the clear value is
 316  * R, RG, RGB, or RGBA.
 317  *
 318  * For each element, only "num_channels" components of "clear_value" are
 319  * copied to the buffer, then the offset is incremented by num_channels*4.
 320  */
 321 void util_blitter_clear_buffer(struct blitter_context *blitter,
 322                                struct pipe_resource *dst,
 323                                unsigned offset, unsigned size,
 324                                unsigned num_channels,
 325                                const union pipe_color_union *clear_value);
 326
 327 /**
 328  * Clear a region of a (color) surface to a constant value.
 329  *
 330  * These states must be saved in the blitter in addition to the state objects
 331  * already required to be saved:
 332  * - fragment shader
 333  * - depth stencil alpha state
 334  * - blend state
 335  * - framebuffer state
 336  */
 337 void util_blitter_clear_render_target(struct blitter_context *blitter,
 338                                       struct pipe_surface *dst,
 339                                       const union pipe_color_union *color,
 340                                       unsigned dstx, unsigned dsty,
 341                                       unsigned width, unsigned height);
 342
 343 /**
 344  * Clear a region of a depth-stencil surface, both stencil and depth
 345  * or only one of them if this is a combined depth-stencil surface.
 346  *
 347  * These states must be saved in the blitter in addition to the state objects
 348  * already required to be saved:
 349  * - fragment shader
 350  * - depth stencil alpha state
 351  * - blend state
 352  * - framebuffer state
 353  */
 354 void util_blitter_clear_depth_stencil(struct blitter_context *blitter,
 355                                       struct pipe_surface *dst,
 356                                       unsigned clear_flags,
 357                                       double depth,
 358                                       unsigned stencil,
 359                                       unsigned dstx, unsigned dsty,
 360                                       unsigned width, unsigned height);
 361
 362 /* The following functions are customized variants of the clear functions.
 363  * Some drivers use them internally to do things like MSAA resolve
 364  * and resource decompression. It usually consists of rendering a full-screen
 365  * quad with a special blend or DSA state.
 366  */
 367
 368 /* Used by r300g for depth decompression. */
 369 void util_blitter_custom_clear_depth(struct blitter_context *blitter,
 370                                      unsigned width, unsigned height,
 371                                      double depth, void *custom_dsa);
 372
 373 /* Used by r600g for depth decompression. */
 374 void util_blitter_custom_depth_stencil(struct blitter_context *blitter,
 375                                        struct pipe_surface *zsurf,
 376                                        struct pipe_surface *cbsurf,
 377                                        unsigned sample_mask,
 378                                        void *dsa_stage, float depth);
 379
 380 /* Used by r600g for color decompression. */
 381 void util_blitter_custom_color(struct blitter_context *blitter,
 382                                struct pipe_surface *dstsurf,
 383                                void *custom_blend);
 384
 385 /* Used by r600g for MSAA color resolve. */
 386 void util_blitter_custom_resolve_color(struct blitter_context *blitter,
 387                                        struct pipe_resource *dst,
 388                                        unsigned dst_level,
 389                                        unsigned dst_layer,
 390                                        struct pipe_resource *src,
 391                                        unsigned src_layer,
 392                                        unsigned sampled_mask,
 393                                        void *custom_blend,
 394                                        enum pipe_format format);
 395
 396 /* Used by vc4 for 8/16-bit linear-to-tiled blits */
 397 void util_blitter_custom_shader(struct blitter_context *blitter,
 398                                 struct pipe_surface *dstsurf,
 399                                 void *custom_vs, void *custom_fs);
 400
 401 /* The functions below should be used to save currently bound constant state
 402  * objects inside a driver. The objects are automatically restored at the end
 403  * of the util_blitter_{clear, copy_region, fill_region} functions and then
 404  * forgotten.
 405  *
 406  * States not listed here are not affected by util_blitter. */
 407
 408 static inline void
 409 util_blitter_save_blend(struct blitter_context *blitter, void *state)
 410 {
 411    blitter->saved_blend_state = state;
 412 }
 413
 414 static inline void
 415 util_blitter_save_depth_stencil_alpha(struct blitter_context *blitter,
 416                                       void *state)
 417 {
 418    blitter->saved_dsa_state = state;
 419 }
 420
 421 static inline void
 422 util_blitter_save_vertex_elements(struct blitter_context *blitter, void *state)
 423 {
 424    blitter->saved_velem_state = state;
 425 }
 426
 427 static inline void
 428 util_blitter_save_stencil_ref(struct blitter_context *blitter,
 429                               const struct pipe_stencil_ref *state)
 430 {
 431    blitter->saved_stencil_ref = *state;
 432 }
 433
 434 static inline void
 435 util_blitter_save_rasterizer(struct blitter_context *blitter, void *state)
 436 {
 437    blitter->saved_rs_state = state;
 438 }
 439
 440 static inline void
 441 util_blitter_save_fragment_shader(struct blitter_context *blitter, void *fs)
 442 {
 443    blitter->saved_fs = fs;
 444 }
 445
 446 static inline void
 447 util_blitter_save_vertex_shader(struct blitter_context *blitter, void *vs)
 448 {
 449    blitter->saved_vs = vs;
 450 }
 451
 452 static inline void
 453 util_blitter_save_geometry_shader(struct blitter_context *blitter, void *gs)
 454 {
 455    blitter->saved_gs = gs;
 456 }
 457
 458 static inline void
 459 util_blitter_save_tessctrl_shader(struct blitter_context *blitter,
 460                                   void *sh)
 461 {
 462    blitter->saved_tcs = sh;
 463 }
 464
 465 static inline void
 466 util_blitter_save_tesseval_shader(struct blitter_context *blitter,
 467                                   void *sh)
 468 {
 469    blitter->saved_tes = sh;
 470 }
 471
 472 static inline void
 473 util_blitter_save_framebuffer(struct blitter_context *blitter,
 474                               const struct pipe_framebuffer_state *state)
 475 {
 476    blitter->saved_fb_state.nr_cbufs = 0; /* It's ~0 now, meaning it's unsaved. */
 477    util_copy_framebuffer_state(&blitter->saved_fb_state, state);
 478 }
 479
 480 static inline void
 481 util_blitter_save_viewport(struct blitter_context *blitter,
 482                            struct pipe_viewport_state *state)
 483 {
 484    blitter->saved_viewport = *state;
 485 }
 486
 487 static inline void
 488 util_blitter_save_scissor(struct blitter_context *blitter,
 489                           struct pipe_scissor_state *state)
 490 {
 491    blitter->saved_scissor = *state;
 492 }
 493
 494 static inline void
 495 util_blitter_save_fragment_sampler_states(
 496                   struct blitter_context *blitter,
 497                   unsigned num_sampler_states,
 498                   void **sampler_states)
 499 {
 500    assert(num_sampler_states <= ARRAY_SIZE(blitter->saved_sampler_states));
 501
 502    blitter->saved_num_sampler_states = num_sampler_states;
 503    memcpy(blitter->saved_sampler_states, sampler_states,
 504           num_sampler_states * sizeof(void *));
 505 }
 506
 507 static inline void
 508 util_blitter_save_fragment_sampler_views(struct blitter_context *blitter,
 509                                          unsigned num_views,
 510                                          struct pipe_sampler_view **views)
 511 {
 512    unsigned i;
 513    assert(num_views <= ARRAY_SIZE(blitter->saved_sampler_views));
 514
 515    blitter->saved_num_sampler_views = num_views;
 516    for (i = 0; i < num_views; i++)
 517       pipe_sampler_view_reference(&blitter->saved_sampler_views[i],
 518                                   views[i]);
 519 }
 520
 521 static inline void
 522 util_blitter_save_fragment_constant_buffer_slot(
 523                   struct blitter_context *blitter,
 524                   struct pipe_constant_buffer *constant_buffers)
 525 {
 526    pipe_resource_reference(&blitter->saved_fs_constant_buffer.buffer,
 527                            constant_buffers[blitter->cb_slot].buffer);
 528    memcpy(&blitter->saved_fs_constant_buffer, &constant_buffers[blitter->cb_slot],
 529           sizeof(struct pipe_constant_buffer));
 530 }
 531
 532 static inline void
 533 util_blitter_save_vertex_buffer_slot(struct blitter_context *blitter,
 534                                      struct pipe_vertex_buffer *vertex_buffers)
 535 {
 536    pipe_vertex_buffer_reference(&blitter->saved_vertex_buffer,
 537                                 &vertex_buffers[blitter->vb_slot]);
 538 }
 539
 540 static inline void
 541 util_blitter_save_so_targets(struct blitter_context *blitter,
 542                              unsigned num_targets,
 543                              struct pipe_stream_output_target **targets)
 544 {
 545    unsigned i;
 546    assert(num_targets <= ARRAY_SIZE(blitter->saved_so_targets));
 547
 548    blitter->saved_num_so_targets = num_targets;
 549    for (i = 0; i < num_targets; i++)
 550       pipe_so_target_reference(&blitter->saved_so_targets[i],
 551                                targets[i]);
 552 }
 553
 554 static inline void
 555 util_blitter_save_sample_mask(struct blitter_context *blitter,
 556                               unsigned sample_mask)
 557 {
 558    blitter->is_sample_mask_saved = true;
 559    blitter->saved_sample_mask = sample_mask;
 560 }
 561
 562 static inline void
 563 util_blitter_save_render_condition(struct blitter_context *blitter,
 564                                    struct pipe_query *query,
 565                                    bool condition,
 566                                    enum pipe_render_cond_flag mode)
 567 {
 568    blitter->saved_render_cond_query = query;
 569    blitter->saved_render_cond_mode = mode;
 570    blitter->saved_render_cond_cond = condition;
 571 }
 572
 573 static inline void
 574 util_blitter_save_window_rectangles(struct blitter_context *blitter,
 575                                     boolean include,
 576                                     unsigned num_rectangles,
 577                                     const struct pipe_scissor_state *rects)
 578 {
 579    blitter->saved_window_rectangles_include = include;
 580    blitter->saved_num_window_rectangles = num_rectangles;
 581    if (num_rectangles > 0) {
 582       assert(num_rectangles < ARRAY_SIZE(blitter->saved_window_rectangles));
 583       memcpy(blitter->saved_window_rectangles, rects,
 584              sizeof(*rects) * num_rectangles);
 585    }
 586 }
 587
 588 void util_blitter_common_clear_setup(struct blitter_context *blitter,
 589                                      unsigned width, unsigned height,
 590                                      unsigned clear_buffers,
 591                                      void *custom_blend, void *custom_dsa);
 592
 593 void util_blitter_set_running_flag(struct blitter_context *blitter);
 594 void util_blitter_unset_running_flag(struct blitter_context *blitter);
 595
 596 void util_blitter_restore_vertex_states(struct blitter_context *blitter);
 597 void util_blitter_restore_fragment_states(struct blitter_context *blitter);
 598 void util_blitter_restore_render_cond(struct blitter_context *blitter);
 599 void util_blitter_restore_fb_state(struct blitter_context *blitter);
 600 void util_blitter_restore_textures(struct blitter_context *blitter);
 601 void util_blitter_restore_constant_buffer_state(struct blitter_context *blitter);
 602
 603 /* These are supported combinations of blits from ZS to color and vice versa.
 604  * The blitter will do the packing/unpacking of depth and stencil
 605  * in the fragment shader.
 606  */
 607 static inline enum pipe_format
 608 util_blitter_get_color_format_for_zs(enum pipe_format format)
 609 {
 610    switch (format) {
 611    case PIPE_FORMAT_Z16_UNORM:
 612       return PIPE_FORMAT_R16_UNORM;
 613
 614    case PIPE_FORMAT_Z32_FLOAT:
 615       return PIPE_FORMAT_R32_FLOAT;
 616
 617    case PIPE_FORMAT_Z24_UNORM_S8_UINT:
 618    case PIPE_FORMAT_Z24X8_UNORM:
 619    case PIPE_FORMAT_S8_UINT_Z24_UNORM:
 620    case PIPE_FORMAT_X8Z24_UNORM:
 621       return PIPE_FORMAT_R32_UINT;
 622
 623    case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
 624       return PIPE_FORMAT_R32G32_UINT;
 625
 626    case PIPE_FORMAT_Z32_UNORM:
 627    default:
 628       assert(0);
 629    }
 630    return PIPE_FORMAT_NONE;
 631 }
 632
 633 #ifdef __cplusplus
 634 }
 635 #endif
 636
 637 #endif