src/gallium/drivers/r300/r300_context.h

   1 /*
   2  * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  22
  23 #ifndef R300_CONTEXT_H
  24 #define R300_CONTEXT_H
  25
  26 #include "draw/draw_vertex.h"
  27
  28 #include "util/u_blitter.h"
  29
  30 #include "pipe/p_context.h"
  31 #include "util/u_inlines.h"
  32 #include "util/u_transfer.h"
  33
  34 #include "translate/translate_cache.h"
  35
  36 #include "r300_defines.h"
  37 #include "r300_screen.h"
  38
  39 struct u_upload_mgr;
  40 struct r300_context;
  41 struct r300_fragment_shader;
  42 struct r300_vertex_shader;
  43 struct r300_stencilref_context;
  44
  45 struct r300_atom {
  46     /* List pointers. */
  47     struct r300_atom *prev, *next;
  48     /* Name, for debugging. */
  49     const char* name;
  50     /* Stat counter. */
  51     uint64_t counter;
  52     /* Opaque state. */
  53     void* state;
  54     /* Emit the state to the context. */
  55     void (*emit)(struct r300_context*, unsigned, void*);
  56     /* Upper bound on number of dwords to emit. */
  57     unsigned size;
  58     /* Whether this atom should be emitted. */
  59     boolean dirty;
  60     /* Whether this atom may be emitted with state == NULL. */
  61     boolean allow_null_state;
  62 };
  63
  64 struct r300_aa_state {
  65     struct r300_surface *dest;
  66
  67     uint32_t aa_config;
  68     uint32_t aaresolve_ctl;
  69 };
  70
  71 struct r300_blend_state {
  72     uint32_t cb[8];
  73     uint32_t cb_no_readwrite[8];
  74 };
  75
  76 struct r300_blend_color_state {
  77     uint32_t cb[3];
  78 };
  79
  80 struct r300_clip_state {
  81     struct pipe_clip_state clip;
  82
  83     uint32_t cb[29];
  84 };
  85
  86 struct r300_dsa_state {
  87     struct pipe_depth_stencil_alpha_state dsa;
  88
  89     /* This is actually a command buffer with named dwords. */
  90     uint32_t cb_begin;
  91     uint32_t alpha_function;    /* R300_FG_ALPHA_FUNC: 0x4bd4 */
  92     uint32_t cb_reg_seq;
  93     uint32_t z_buffer_control;  /* R300_ZB_CNTL: 0x4f00 */
  94     uint32_t z_stencil_control; /* R300_ZB_ZSTENCILCNTL: 0x4f04 */
  95     uint32_t stencil_ref_mask;  /* R300_ZB_STENCILREFMASK: 0x4f08 */
  96     uint32_t cb_reg;
  97     uint32_t stencil_ref_bf;    /* R500_ZB_STENCILREFMASK_BF: 0x4fd4 */
  98
  99     /* The second command buffer disables zbuffer reads and writes. */
 100     uint32_t cb_no_readwrite[8];
 101
 102     /* Whether a two-sided stencil is enabled. */
 103     boolean two_sided;
 104     /* Whether a fallback should be used for a two-sided stencil ref value. */
 105     boolean two_sided_stencil_ref;
 106 };
 107
 108 struct r300_hyperz_state {
 109     int current_func; /* -1 after a clear before first op */
 110     int flush;
 111     /* This is actually a command buffer with named dwords. */
 112     uint32_t cb_flush_begin;
 113     uint32_t zb_zcache_ctlstat;     /* R300_ZB_CACHE_CNTL */
 114     uint32_t cb_begin;
 115     uint32_t zb_bw_cntl;            /* R300_ZB_BW_CNTL */
 116     uint32_t cb_reg1;
 117     uint32_t zb_depthclearvalue;    /* R300_ZB_DEPTHCLEARVALUE */
 118     uint32_t cb_reg2;
 119     uint32_t sc_hyperz;             /* R300_SC_HYPERZ */
 120     uint32_t cb_reg3;
 121     uint32_t gb_z_peq_config;       /* R300_GB_Z_PEQ_CONFIG: 0x4028 */
 122 };
 123
 124 struct r300_gpu_flush {
 125     uint32_t cb_flush_clean[6];
 126 };
 127
 128 struct r300_rs_state {
 129     /* Original rasterizer state. */
 130     struct pipe_rasterizer_state rs;
 131     /* Draw-specific rasterizer state. */
 132     struct pipe_rasterizer_state rs_draw;
 133
 134     /* Command buffers. */
 135     uint32_t cb_main[25];
 136     uint32_t cb_poly_offset_zb16[5];
 137     uint32_t cb_poly_offset_zb24[5];
 138
 139     /* The index to cb_main where the cull_mode register value resides. */
 140     unsigned cull_mode_index;
 141
 142     /* Whether polygon offset is enabled. */
 143     boolean polygon_offset_enable;
 144
 145     /* This is emitted in the draw function. */
 146     uint32_t color_control;         /* R300_GA_COLOR_CONTROL: 0x4278 */
 147 };
 148
 149 struct r300_rs_block {
 150     uint32_t vap_vtx_state_cntl;  /* R300_VAP_VTX_STATE_CNTL: 0x2180 */
 151     uint32_t vap_vsm_vtx_assm;    /* R300_VAP_VSM_VTX_ASSM: 0x2184 */
 152     uint32_t vap_out_vtx_fmt[2];  /* R300_VAP_OUTPUT_VTX_FMT_[0-1]: 0x2090 */
 153
 154     uint32_t ip[8]; /* R300_RS_IP_[0-7], R500_RS_IP_[0-7] */
 155     uint32_t count; /* R300_RS_COUNT */
 156     uint32_t inst_count; /* R300_RS_INST_COUNT */
 157     uint32_t inst[8]; /* R300_RS_INST_[0-7] */
 158 };
 159
 160 struct r300_sampler_state {
 161     struct pipe_sampler_state state;
 162
 163     uint32_t filter0;      /* R300_TX_FILTER0: 0x4400 */
 164     uint32_t filter1;      /* R300_TX_FILTER1: 0x4440 */
 165     uint32_t border_color; /* R300_TX_BORDER_COLOR: 0x45c0 */
 166
 167     /* Min/max LOD must be clamped to [0, last_level], thus
 168      * it's dependent on a currently bound texture */
 169     unsigned min_lod, max_lod;
 170 };
 171
 172 struct r300_texture_format_state {
 173     uint32_t format0; /* R300_TX_FORMAT0: 0x4480 */
 174     uint32_t format1; /* R300_TX_FORMAT1: 0x44c0 */
 175     uint32_t format2; /* R300_TX_FORMAT2: 0x4500 */
 176     uint32_t tile_config; /* R300_TX_OFFSET (subset thereof) */
 177 };
 178
 179 struct r300_sampler_view {
 180     struct pipe_sampler_view base;
 181
 182     /* Swizzles in the UTIL_FORMAT_SWIZZLE_* representation,
 183      * derived from base. */
 184     unsigned char swizzle[4];
 185
 186     /* Copy of r300_texture::texture_format_state with format-specific bits
 187      * added. */
 188     struct r300_texture_format_state format;
 189
 190     /* The texture cache region for this texture. */
 191     uint32_t texcache_region;
 192 };
 193
 194 struct r300_texture_fb_state {
 195     uint32_t pitch[R300_MAX_TEXTURE_LEVELS]; /* COLORPITCH or DEPTHPITCH. */
 196     uint32_t format; /* US_OUT_FMT or R300_ZB_FORMAT */
 197 };
 198
 199 struct r300_texture_sampler_state {
 200     struct r300_texture_format_state format;
 201     uint32_t filter0;      /* R300_TX_FILTER0: 0x4400 */
 202     uint32_t filter1;      /* R300_TX_FILTER1: 0x4440 */
 203     uint32_t border_color;  /* R300_TX_BORDER_COLOR: 0x45c0 */
 204 };
 205
 206 struct r300_textures_state {
 207     /* Textures. */
 208     struct r300_sampler_view *sampler_views[16];
 209     int sampler_view_count;
 210     /* Sampler states. */
 211     struct r300_sampler_state *sampler_states[16];
 212     int sampler_state_count;
 213
 214     /* This is the merge of the texture and sampler states. */
 215     unsigned count;
 216     uint32_t tx_enable;         /* R300_TX_ENABLE: 0x4101 */
 217     struct r300_texture_sampler_state regs[16];
 218 };
 219
 220 struct r300_vertex_stream_state {
 221     /* R300_VAP_PROG_STREAK_CNTL_[0-7] */
 222     uint32_t vap_prog_stream_cntl[8];
 223     /* R300_VAP_PROG_STREAK_CNTL_EXT_[0-7] */
 224     uint32_t vap_prog_stream_cntl_ext[8];
 225
 226     unsigned count;
 227 };
 228
 229 struct r300_invariant_state {
 230     uint32_t cb[20];
 231 };
 232
 233 struct r300_vap_invariant_state {
 234     uint32_t cb[9];
 235 };
 236
 237 struct r300_viewport_state {
 238     float xscale;         /* R300_VAP_VPORT_XSCALE:  0x2098 */
 239     float xoffset;        /* R300_VAP_VPORT_XOFFSET: 0x209c */
 240     float yscale;         /* R300_VAP_VPORT_YSCALE:  0x20a0 */
 241     float yoffset;        /* R300_VAP_VPORT_YOFFSET: 0x20a4 */
 242     float zscale;         /* R300_VAP_VPORT_ZSCALE:  0x20a8 */
 243     float zoffset;        /* R300_VAP_VPORT_ZOFFSET: 0x20ac */
 244     uint32_t vte_control; /* R300_VAP_VTE_CNTL:      0x20b0 */
 245 };
 246
 247 struct r300_ztop_state {
 248     uint32_t z_buffer_top;      /* R300_ZB_ZTOP: 0x4f14 */
 249 };
 250
 251 /* The next several objects are not pure Radeon state; they inherit from
 252  * various Gallium classes. */
 253
 254 struct r300_constant_buffer {
 255     /* Buffer of constants */
 256     uint32_t *ptr;
 257     /* Remapping table. */
 258     unsigned *remap_table;
 259 };
 260
 261 /* Query object.
 262  *
 263  * This is not a subclass of pipe_query because pipe_query is never
 264  * actually fully defined. So, rather than have it as a member, and do
 265  * subclass-style casting, we treat pipe_query as an opaque, and just
 266  * trust that our state tracker does not ever mess up query objects.
 267  */
 268 struct r300_query {
 269     /* The kind of query. Currently only OQ is supported. */
 270     unsigned type;
 271     /* The number of pipes where query results are stored. */
 272     unsigned num_pipes;
 273     /* How many results have been written, in dwords. It's incremented
 274      * after end_query and flush. */
 275     unsigned num_results;
 276     /* if we've flushed the query */
 277     boolean flushed;
 278     /* if begin has been emitted */
 279     boolean begin_emitted;
 280
 281     /* The buffer where query results are stored. */
 282     struct r300_winsys_buffer *buffer;
 283     /* The size of the buffer. */
 284     unsigned buffer_size;
 285     /* The domain of the buffer. */
 286     enum r300_buffer_domain domain;
 287
 288     /* Linked list members. */
 289     struct r300_query* prev;
 290     struct r300_query* next;
 291 };
 292
 293 /* Fence object.
 294  *
 295  * This is a fake fence. Instead of syncing with the fence, we sync
 296  * with the context, which is inefficient but compliant.
 297  *
 298  * This is not a subclass of pipe_fence_handle because pipe_fence_handle is
 299  * never actually fully defined. So, rather than have it as a member, and do
 300  * subclass-style casting, we treat pipe_fence_handle as an opaque, and just
 301  * trust that our state tracker does not ever mess up fence objects.
 302  */
 303 struct r300_fence {
 304     struct pipe_reference reference;
 305     struct r300_context *ctx;
 306     boolean signalled;
 307 };
 308
 309 struct r300_surface {
 310     struct pipe_surface base;
 311
 312     /* Winsys buffer backing the texture. */
 313     struct r300_winsys_buffer *buffer;
 314
 315     enum r300_buffer_domain domain;
 316
 317     uint32_t offset;    /* COLOROFFSET or DEPTHOFFSET. */
 318     uint32_t pitch;     /* COLORPITCH or DEPTHPITCH. */
 319     uint32_t format;    /* US_OUT_FMT or ZB_FORMAT. */
 320
 321     /* Parameters dedicated to the CBZB clear. */
 322     uint32_t cbzb_width;            /* Aligned width. */
 323     uint32_t cbzb_height;           /* Half of the height. */
 324     uint32_t cbzb_midpoint_offset;  /* DEPTHOFFSET. */
 325     uint32_t cbzb_pitch;            /* DEPTHPITCH. */
 326     uint32_t cbzb_format;           /* ZB_FORMAT. */
 327
 328     /* Whether the CBZB clear is allowed on the surface. */
 329     boolean cbzb_allowed;
 330
 331 };
 332
 333 struct r300_texture_desc {
 334     /* Parent class. */
 335     struct u_resource b;
 336
 337     /* Buffer tiling.
 338      * Macrotiling is specified per-level because small mipmaps cannot
 339      * be macrotiled. */
 340     enum r300_buffer_tiling microtile;
 341     enum r300_buffer_tiling macrotile[R300_MAX_TEXTURE_LEVELS];
 342
 343     /* Offsets into the buffer. */
 344     unsigned offset_in_bytes[R300_MAX_TEXTURE_LEVELS];
 345
 346     /* Strides for each mip-level. */
 347     unsigned stride_in_pixels[R300_MAX_TEXTURE_LEVELS];
 348     unsigned stride_in_bytes[R300_MAX_TEXTURE_LEVELS];
 349
 350     /* Size of one zslice or face or 2D image based on the texture target. */
 351     unsigned layer_size_in_bytes[R300_MAX_TEXTURE_LEVELS];
 352
 353     /* Total size of this texture, in bytes,
 354      * derived from the texture properties. */
 355     unsigned size_in_bytes;
 356
 357     /* Total size of the buffer backing this texture, in bytes.
 358      * It must be >= size. */
 359     unsigned buffer_size_in_bytes;
 360
 361     /**
 362      * If non-zero, override the natural texture layout with
 363      * a custom stride (in bytes).
 364      *
 365      * \note Mipmapping fails for textures with a non-natural layout!
 366      *
 367      * \sa r300_texture_get_stride
 368      */
 369     unsigned stride_in_bytes_override;
 370
 371     /* Whether this texture has non-power-of-two dimensions.
 372      * It can be either a regular texture or a rectangle one. */
 373     boolean is_npot;
 374
 375     /* This flag says that hardware must use the stride for addressing
 376      * instead of the width. */
 377     boolean uses_stride_addressing;
 378
 379     /* Whether CBZB fast color clear is allowed on the miplevel. */
 380     boolean cbzb_allowed[R300_MAX_TEXTURE_LEVELS];
 381 };
 382
 383 struct r300_texture {
 384     struct r300_texture_desc desc;
 385
 386     enum r300_buffer_domain domain;
 387
 388     /* Pipe buffer backing this texture. */
 389     struct r300_winsys_buffer *buffer;
 390
 391     /* Registers carrying texture format data. */
 392     /* Only format-independent bits should be filled in. */
 393     struct r300_texture_format_state tx_format;
 394     /* All bits should be filled in. */
 395     struct r300_texture_fb_state fb_state;
 396
 397     /* hyper-z memory allocs */
 398     struct mem_block *hiz_mem[R300_MAX_TEXTURE_LEVELS];
 399     struct mem_block *zmask_mem[R300_MAX_TEXTURE_LEVELS];
 400     boolean zmask_in_use[R300_MAX_TEXTURE_LEVELS];
 401     boolean hiz_in_use[R300_MAX_TEXTURE_LEVELS];
 402
 403     /* This is the level tiling flags were last time set for.
 404      * It's used to prevent redundant tiling-flags changes from happening.*/
 405     unsigned surface_level;
 406 };
 407
 408 struct r300_vertex_element_state {
 409     unsigned count;
 410     struct pipe_vertex_element velem[PIPE_MAX_ATTRIBS];
 411
 412     /* If (velem[i].src_format != hw_format[i]), the vertex buffer
 413      * referenced by this vertex element cannot be used for rendering and
 414      * its vertex data must be translated to hw_format[i]. */
 415     enum pipe_format hw_format[PIPE_MAX_ATTRIBS];
 416     unsigned hw_format_size[PIPE_MAX_ATTRIBS];
 417
 418     /* The size of the vertex, in dwords. */
 419     unsigned vertex_size_dwords;
 420
 421     /* This might mean two things:
 422      * - src_format != hw_format, as discussed above.
 423      * - src_offset % 4 != 0. */
 424     boolean incompatible_layout;
 425
 426     struct r300_vertex_stream_state vertex_stream;
 427 };
 428
 429 struct r300_translate_context {
 430     /* Translate cache for incompatible vertex offset/stride/format fallback. */
 431     struct translate_cache *translate_cache;
 432
 433     /* The vertex buffer slot containing the translated buffer. */
 434     unsigned vb_slot;
 435
 436     /* Saved and new vertex element state. */
 437     void *saved_velems, *new_velems;
 438 };
 439
 440 struct r300_context {
 441     /* Parent class */
 442     struct pipe_context context;
 443
 444     /* The interface to the windowing system, etc. */
 445     struct r300_winsys_screen *rws;
 446     /* The command stream. */
 447     struct r300_winsys_cs *cs;
 448     /* Screen. */
 449     struct r300_screen *screen;
 450     /* Draw module. Used mostly for SW TCL. */
 451     struct draw_context* draw;
 452     size_t draw_vbo_size;
 453     /* Accelerated blit support. */
 454     struct blitter_context* blitter;
 455     /* Stencil two-sided reference value fallback. */
 456     struct r300_stencilref_context *stencilref_fallback;
 457     /* For translating vertex buffers having incompatible vertex layout. */
 458     struct r300_translate_context tran;
 459
 460     /* Vertex buffer for rendering. */
 461     struct pipe_resource* vbo;
 462     /* The KIL opcode needs the first texture unit to be enabled
 463      * on r3xx-r4xx. In order to calm down the CS checker, we bind this
 464      * dummy texture there. */
 465     struct r300_sampler_view *texkill_sampler;
 466     /* Offset into the VBO. */
 467     size_t vbo_offset;
 468
 469     /* The currently active query. */
 470     struct r300_query *query_current;
 471     /* The saved query for blitter operations. */
 472     struct r300_query *blitter_saved_query;
 473     /* Query list. */
 474     struct r300_query query_list;
 475
 476     /* Various CSO state objects. */
 477     /* Beginning of atom list. */
 478     struct r300_atom atom_list;
 479     /* Anti-aliasing (MSAA) state. */
 480     struct r300_atom aa_state;
 481     /* Blend state. */
 482     struct r300_atom blend_state;
 483     /* Blend color state. */
 484     struct r300_atom blend_color_state;
 485     /* User clip planes. */
 486     struct r300_atom clip_state;
 487     /* Depth, stencil, and alpha state. */
 488     struct r300_atom dsa_state;
 489     /* Fragment shader. */
 490     struct r300_atom fs;
 491     /* Fragment shader RC_CONSTANT_STATE variables. */
 492     struct r300_atom fs_rc_constant_state;
 493     /* Fragment shader constant buffer. */
 494     struct r300_atom fs_constants;
 495     /* Framebuffer state. */
 496     struct r300_atom fb_state;
 497     /* Framebuffer state (pipelined regs). */
 498     struct r300_atom fb_state_pipelined;
 499     /* HyperZ state (various SC/ZB bits). */
 500     struct r300_atom hyperz_state;
 501     /* Occlusion query. */
 502     struct r300_atom query_start;
 503     /* Rasterizer state. */
 504     struct r300_atom rs_state;
 505     /* RS block state + VAP (vertex shader) output mapping state. */
 506     struct r300_atom rs_block_state;
 507     /* Scissor state. */
 508     struct r300_atom scissor_state;
 509     /* Textures state. */
 510     struct r300_atom textures_state;
 511     /* Vertex stream formatting state. */
 512     struct r300_atom vertex_stream_state;
 513     /* Vertex shader. */
 514     struct r300_atom vs_state;
 515     /* Vertex shader constant buffer. */
 516     struct r300_atom vs_constants;
 517     /* Viewport state. */
 518     struct r300_atom viewport_state;
 519     /* ZTOP state. */
 520     struct r300_atom ztop_state;
 521     /* PVS flush. */
 522     struct r300_atom pvs_flush;
 523     /* VAP invariant state. */
 524     struct r300_atom vap_invariant_state;
 525     /* Texture cache invalidate. */
 526     struct r300_atom texture_cache_inval;
 527     /* GPU flush. */
 528     struct r300_atom gpu_flush;
 529     /* HiZ clear */
 530     struct r300_atom hiz_clear;
 531     /* zmask clear */
 532     struct r300_atom zmask_clear;
 533
 534     /* Invariant state. This must be emitted to get the engine started. */
 535     struct r300_atom invariant_state;
 536
 537     /* Vertex buffers for Gallium. */
 538     struct pipe_vertex_buffer vertex_buffer[PIPE_MAX_ATTRIBS];
 539     int vertex_buffer_count;
 540     int vertex_buffer_max_index;
 541     /* Vertex elements for Gallium. */
 542     struct r300_vertex_element_state *velems;
 543     bool any_user_vbs;
 544
 545     struct pipe_index_buffer index_buffer;
 546
 547     /* Vertex info for Draw. */
 548     struct vertex_info vertex_info;
 549
 550     struct pipe_stencil_ref stencil_ref;
 551     struct pipe_viewport_state viewport;
 552
 553     /* Stream locations for SWTCL. */
 554     int stream_loc_notcl[16];
 555
 556     /* Flag indicating whether or not the HW is dirty. */
 557     uint32_t dirty_hw;
 558     /* Whether polygon offset is enabled. */
 559     boolean polygon_offset_enabled;
 560     /* Z buffer bit depth. */
 561     uint32_t zbuffer_bpp;
 562     /* Whether rendering is conditional and should be skipped. */
 563     boolean skip_rendering;
 564     /* Point sprites texcoord index,  1 bit per texcoord */
 565     int sprite_coord_enable;
 566     /* Whether two-sided color selection is enabled (AKA light_twoside). */
 567     boolean two_sided_color;
 568     /* Incompatible vertex buffer layout? (misaligned stride or buffer_offset) */
 569     boolean incompatible_vb_layout;
 570 #define R300_Z_COMPRESS_44 1
 571 #define RV350_Z_COMPRESS_88 2
 572     int z_compression;
 573     boolean cbzb_clear;
 574     boolean z_decomp_rd;
 575
 576     /* two mem block managers for hiz/zmask ram space */
 577     struct mem_block *hiz_mm;
 578     struct mem_block *zmask_mm;
 579
 580     /* upload managers */
 581     struct u_upload_mgr *upload_vb;
 582     struct u_upload_mgr *upload_ib;
 583
 584     struct util_mempool pool_transfers;
 585
 586     /* Stat counter. */
 587     uint64_t flush_counter;
 588 };
 589
 590 /* Convenience cast wrappers. */
 591 static INLINE struct r300_query* r300_query(struct pipe_query* q)
 592 {
 593     return (struct r300_query*)q;
 594 }
 595
 596 static INLINE struct r300_surface* r300_surface(struct pipe_surface* surf)
 597 {
 598     return (struct r300_surface*)surf;
 599 }
 600
 601 static INLINE struct r300_texture* r300_texture(struct pipe_resource* tex)
 602 {
 603     return (struct r300_texture*)tex;
 604 }
 605
 606 static INLINE struct r300_context* r300_context(struct pipe_context* context)
 607 {
 608     return (struct r300_context*)context;
 609 }
 610
 611 static INLINE struct r300_fragment_shader *r300_fs(struct r300_context *r300)
 612 {
 613     return (struct r300_fragment_shader*)r300->fs.state;
 614 }
 615
 616 struct pipe_context* r300_create_context(struct pipe_screen* screen,
 617                                          void *priv);
 618
 619 void r300_finish(struct r300_context *r300);
 620 void r300_flush_cb(void *data);
 621
 622 /* Context initialization. */
 623 struct draw_stage* r300_draw_stage(struct r300_context* r300);
 624 void r300_init_blit_functions(struct r300_context *r300);
 625 void r300_init_flush_functions(struct r300_context* r300);
 626 void r300_init_query_functions(struct r300_context* r300);
 627 void r300_init_render_functions(struct r300_context *r300);
 628 void r300_init_state_functions(struct r300_context* r300);
 629 void r300_init_resource_functions(struct r300_context* r300);
 630
 631 /* r300_blit.c */
 632 void r300_flush_depth_stencil(struct pipe_context *pipe,
 633                               struct pipe_resource *dst,
 634                               struct pipe_subresource subdst,
 635                               unsigned zslice);
 636
 637 /* r300_query.c */
 638 void r300_resume_query(struct r300_context *r300,
 639                        struct r300_query *query);
 640 void r300_stop_query(struct r300_context *r300);
 641
 642 /* r300_render_translate.c */
 643 void r300_begin_vertex_translate(struct r300_context *r300);
 644 void r300_end_vertex_translate(struct r300_context *r300);
 645 void r300_translate_index_buffer(struct r300_context *r300,
 646                                  struct pipe_resource **index_buffer,
 647                                  unsigned *index_size, unsigned index_offset,
 648                                  unsigned *start, unsigned count);
 649
 650 /* r300_render_stencilref.c */
 651 void r300_plug_in_stencil_ref_fallback(struct r300_context *r300);
 652
 653 /* r300_render.c */
 654 void r300_draw_flush_vbuf(struct r300_context *r300);
 655 boolean r500_index_bias_supported(struct r300_context *r300);
 656 void r500_emit_index_bias(struct r300_context *r300, int index_bias);
 657
 658 /* r300_state.c */
 659 enum r300_fb_state_change {
 660     R300_CHANGED_FB_STATE = 0,
 661     R300_CHANGED_CBZB_FLAG,
 662     R300_CHANGED_ZCLEAR_FLAG
 663 };
 664
 665 void r300_mark_fb_state_dirty(struct r300_context *r300,
 666                               enum r300_fb_state_change change);
 667 void r300_mark_fs_code_dirty(struct r300_context *r300);
 668
 669 /* r300_debug.c */
 670 void r500_dump_rs_block(struct r300_rs_block *rs);
 671
 672
 673 static INLINE boolean CTX_DBG_ON(struct r300_context * ctx, unsigned flags)
 674 {
 675     return SCREEN_DBG_ON(ctx->screen, flags);
 676 }
 677
 678 static INLINE void CTX_DBG(struct r300_context * ctx, unsigned flags,
 679                        const char * fmt, ...)
 680 {
 681     if (CTX_DBG_ON(ctx, flags)) {
 682         va_list va;
 683         va_start(va, fmt);
 684         vfprintf(stderr, fmt, va);
 685         va_end(va);
 686     }
 687 }
 688
 689 #define DBG_ON  CTX_DBG_ON
 690 #define DBG     CTX_DBG
 691
 692 #endif /* R300_CONTEXT_H */