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 "r300_defines.h"
  35 #include "r300_screen.h"
  36
  37 struct u_upload_mgr;
  38 struct r300_context;
  39
  40 struct r300_fragment_shader;
  41 struct r300_vertex_shader;
  42
  43 struct r300_atom {
  44     /* List pointers. */
  45     struct r300_atom *prev, *next;
  46     /* Name, for debugging. */
  47     const char* name;
  48     /* Opaque state. */
  49     void* state;
  50     /* Emit the state to the context. */
  51     void (*emit)(struct r300_context*, unsigned, void*);
  52     /* Upper bound on number of dwords to emit. */
  53     unsigned size;
  54     /* Whether this atom should be emitted. */
  55     boolean dirty;
  56     /* Another dirty flag that is never automatically cleared. */
  57     boolean always_dirty;
  58 };
  59
  60 struct r300_blend_state {
  61     uint32_t blend_control;       /* R300_RB3D_CBLEND: 0x4e04 */
  62     uint32_t alpha_blend_control; /* R300_RB3D_ABLEND: 0x4e08 */
  63     uint32_t color_channel_mask;  /* R300_RB3D_COLOR_CHANNEL_MASK: 0x4e0c */
  64     uint32_t rop;                 /* R300_RB3D_ROPCNTL: 0x4e18 */
  65     uint32_t dither;              /* R300_RB3D_DITHER_CTL: 0x4e50 */
  66 };
  67
  68 struct r300_blend_color_state {
  69     /* RV515 and earlier */
  70     uint32_t blend_color;            /* R300_RB3D_BLEND_COLOR: 0x4e10 */
  71     /* R520 and newer */
  72     uint32_t blend_color_red_alpha;  /* R500_RB3D_CONSTANT_COLOR_AR: 0x4ef8 */
  73     uint32_t blend_color_green_blue; /* R500_RB3D_CONSTANT_COLOR_GB: 0x4efc */
  74 };
  75
  76 struct r300_dsa_state {
  77     uint32_t alpha_function;    /* R300_FG_ALPHA_FUNC: 0x4bd4 */
  78     uint32_t alpha_reference;   /* R500_FG_ALPHA_VALUE: 0x4be0 */
  79     uint32_t z_buffer_control;  /* R300_ZB_CNTL: 0x4f00 */
  80     uint32_t z_stencil_control; /* R300_ZB_ZSTENCILCNTL: 0x4f04 */
  81     uint32_t stencil_ref_mask;  /* R300_ZB_STENCILREFMASK: 0x4f08 */
  82     uint32_t stencil_ref_bf;    /* R500_ZB_STENCILREFMASK_BF: 0x4fd4 */
  83
  84     /* Whether a two-sided stencil is enabled. */
  85     boolean two_sided;
  86     /* Whether a fallback should be used for a two-sided stencil ref value. */
  87     boolean stencil_ref_bf_fallback;
  88 };
  89
  90 struct r300_rs_state {
  91     /* Draw-specific rasterizer state */
  92     struct pipe_rasterizer_state rs;
  93
  94     uint32_t vap_control_status;    /* R300_VAP_CNTL_STATUS: 0x2140 */
  95     uint32_t antialiasing_config;   /* R300_GB_AA_CONFIG: 0x4020 */
  96     uint32_t point_size;            /* R300_GA_POINT_SIZE: 0x421c */
  97     uint32_t line_control;          /* R300_GA_LINE_CNTL: 0x4234 */
  98     float depth_scale;            /* R300_SU_POLY_OFFSET_FRONT_SCALE: 0x42a4 */
  99                                   /* R300_SU_POLY_OFFSET_BACK_SCALE: 0x42ac */
 100     float depth_offset;           /* R300_SU_POLY_OFFSET_FRONT_OFFSET: 0x42a8 */
 101                                   /* R300_SU_POLY_OFFSET_BACK_OFFSET: 0x42b0 */
 102     uint32_t polygon_offset_enable; /* R300_SU_POLY_OFFSET_ENABLE: 0x42b4 */
 103     uint32_t cull_mode;             /* R300_SU_CULL_MODE: 0x42b8 */
 104     uint32_t line_stipple_config;   /* R300_GA_LINE_STIPPLE_CONFIG: 0x4328 */
 105     uint32_t line_stipple_value;    /* R300_GA_LINE_STIPPLE_VALUE: 0x4260 */
 106     uint32_t color_control;         /* R300_GA_COLOR_CONTROL: 0x4278 */
 107     uint32_t polygon_mode;          /* R300_GA_POLY_MODE: 0x4288 */
 108     uint32_t clip_rule;             /* R300_SC_CLIP_RULE: 0x43D0 */
 109
 110     /* Specifies top of Raster pipe specific enable controls,
 111      * i.e. texture coordinates stuffing for points, lines, triangles */
 112     uint32_t stuffing_enable;       /* R300_GB_ENABLE: 0x4008 */
 113
 114     /* Point sprites texture coordinates, 0: lower left, 1: upper right */
 115     float point_texcoord_left;      /* R300_GA_POINT_S0: 0x4200 */
 116     float point_texcoord_bottom;    /* R300_GA_POINT_T0: 0x4204 */
 117     float point_texcoord_right;     /* R300_GA_POINT_S1: 0x4208 */
 118     float point_texcoord_top;       /* R300_GA_POINT_T1: 0x420c */
 119 };
 120
 121 struct r300_rs_block {
 122     uint32_t ip[8]; /* R300_RS_IP_[0-7], R500_RS_IP_[0-7] */
 123     uint32_t count; /* R300_RS_COUNT */
 124     uint32_t inst_count; /* R300_RS_INST_COUNT */
 125     uint32_t inst[8]; /* R300_RS_INST_[0-7] */
 126 };
 127
 128 struct r300_sampler_state {
 129     struct pipe_sampler_state state;
 130
 131     uint32_t filter0;      /* R300_TX_FILTER0: 0x4400 */
 132     uint32_t filter1;      /* R300_TX_FILTER1: 0x4440 */
 133     uint32_t border_color; /* R300_TX_BORDER_COLOR: 0x45c0 */
 134
 135     /* Min/max LOD must be clamped to [0, last_level], thus
 136      * it's dependent on a currently bound texture */
 137     unsigned min_lod, max_lod;
 138 };
 139
 140 struct r300_texture_format_state {
 141     uint32_t format0; /* R300_TX_FORMAT0: 0x4480 */
 142     uint32_t format1; /* R300_TX_FORMAT1: 0x44c0 */
 143     uint32_t format2; /* R300_TX_FORMAT2: 0x4500 */
 144     uint32_t tile_config; /* R300_TX_OFFSET (subset thereof) */
 145 };
 146
 147 struct r300_sampler_view {
 148     struct pipe_sampler_view base;
 149
 150     /* Copy of r300_texture::texture_format_state with format-specific bits
 151      * added. */
 152     struct r300_texture_format_state format;
 153 };
 154
 155 struct r300_texture_fb_state {
 156     /* Colorbuffer. */
 157     uint32_t colorpitch[R300_MAX_TEXTURE_LEVELS]; /* R300_RB3D_COLORPITCH[0-3]*/
 158     uint32_t us_out_fmt; /* R300_US_OUT_FMT[0-3] */
 159
 160     /* Zbuffer. */
 161     uint32_t depthpitch[R300_MAX_TEXTURE_LEVELS]; /* R300_RB3D_DEPTHPITCH */
 162     uint32_t zb_format; /* R300_ZB_FORMAT */
 163 };
 164
 165 struct r300_textures_state {
 166     /* Textures. */
 167     struct r300_sampler_view *sampler_views[16];
 168     int sampler_view_count;
 169     /* Sampler states. */
 170     struct r300_sampler_state *sampler_states[16];
 171     int sampler_state_count;
 172
 173     /* This is the merge of the texture and sampler states. */
 174     unsigned count;
 175     uint32_t tx_enable;         /* R300_TX_ENABLE: 0x4101 */
 176     struct r300_texture_sampler_state {
 177         struct r300_texture_format_state format;
 178         uint32_t filter0;      /* R300_TX_FILTER0: 0x4400 */
 179         uint32_t filter1;      /* R300_TX_FILTER1: 0x4440 */
 180         uint32_t border_color;  /* R300_TX_BORDER_COLOR: 0x45c0 */
 181     } regs[16];
 182 };
 183
 184 struct r300_vertex_stream_state {
 185     /* R300_VAP_PROG_STREAK_CNTL_[0-7] */
 186     uint32_t vap_prog_stream_cntl[8];
 187     /* R300_VAP_PROG_STREAK_CNTL_EXT_[0-7] */
 188     uint32_t vap_prog_stream_cntl_ext[8];
 189
 190     unsigned count;
 191 };
 192
 193 struct r300_vap_output_state {
 194     uint32_t vap_vtx_state_cntl;  /* R300_VAP_VTX_STATE_CNTL: 0x2180 */
 195     uint32_t vap_vsm_vtx_assm;    /* R300_VAP_VSM_VTX_ASSM: 0x2184 */
 196     uint32_t vap_out_vtx_fmt[2];  /* R300_VAP_OUTPUT_VTX_FMT_[0-1]: 0x2090 */
 197 };
 198
 199 struct r300_viewport_state {
 200     float xscale;         /* R300_VAP_VPORT_XSCALE:  0x2098 */
 201     float xoffset;        /* R300_VAP_VPORT_XOFFSET: 0x209c */
 202     float yscale;         /* R300_VAP_VPORT_YSCALE:  0x20a0 */
 203     float yoffset;        /* R300_VAP_VPORT_YOFFSET: 0x20a4 */
 204     float zscale;         /* R300_VAP_VPORT_ZSCALE:  0x20a8 */
 205     float zoffset;        /* R300_VAP_VPORT_ZOFFSET: 0x20ac */
 206     uint32_t vte_control; /* R300_VAP_VTE_CNTL:      0x20b0 */
 207 };
 208
 209 struct r300_ztop_state {
 210     uint32_t z_buffer_top;      /* R300_ZB_ZTOP: 0x4f14 */
 211 };
 212
 213 /* The next several objects are not pure Radeon state; they inherit from
 214  * various Gallium classes. */
 215
 216 struct r300_constant_buffer {
 217     /* Buffer of constants */
 218     float constants[256][4];
 219     /* Total number of constants */
 220     unsigned count;
 221 };
 222
 223 /* Query object.
 224  *
 225  * This is not a subclass of pipe_query because pipe_query is never
 226  * actually fully defined. So, rather than have it as a member, and do
 227  * subclass-style casting, we treat pipe_query as an opaque, and just
 228  * trust that our state tracker does not ever mess up query objects.
 229  */
 230 struct r300_query {
 231     /* The kind of query. Currently only OQ is supported. */
 232     unsigned type;
 233     /* Whether this query is currently active. Only active queries will
 234      * get emitted into the command stream, and only active queries get
 235      * tallied. */
 236     boolean active;
 237     /* The current count of this query. Required to be at least 32 bits. */
 238     unsigned int count;
 239     /* The offset of this query into the query buffer, in bytes. */
 240     unsigned offset;
 241     /* if we've flushed the query */
 242     boolean flushed;
 243     /* if begin has been emitted */
 244     boolean begin_emitted;
 245     /* Linked list members. */
 246     struct r300_query* prev;
 247     struct r300_query* next;
 248 };
 249
 250 struct r300_texture {
 251     /* Parent class */
 252     struct u_resource b;
 253
 254     /* Offsets into the buffer. */
 255     unsigned offset[R300_MAX_TEXTURE_LEVELS];
 256
 257     /* A pitch for each mip-level */
 258     unsigned pitch[R300_MAX_TEXTURE_LEVELS];
 259
 260     /* Size of one zslice or face based on the texture target */
 261     unsigned layer_size[R300_MAX_TEXTURE_LEVELS];
 262
 263     /* Whether the mipmap level is macrotiled. */
 264     enum r300_buffer_tiling mip_macrotile[R300_MAX_TEXTURE_LEVELS];
 265
 266     /**
 267      * If non-zero, override the natural texture layout with
 268      * a custom stride (in bytes).
 269      *
 270      * \note Mipmapping fails for textures with a non-natural layout!
 271      *
 272      * \sa r300_texture_get_stride
 273      */
 274     unsigned stride_override;
 275
 276     /* Total size of this texture, in bytes. */
 277     unsigned size;
 278
 279     /* Whether this texture has non-power-of-two dimensions
 280      * or a user-specified pitch.
 281      * It can be either a regular texture or a rectangle one.
 282      */
 283     boolean uses_pitch;
 284
 285     /* Pipe buffer backing this texture. */
 286     struct r300_winsys_buffer *buffer;
 287
 288     /* Registers carrying texture format data. */
 289     /* Only format-independent bits should be filled in. */
 290     struct r300_texture_format_state tx_format;
 291     /* All bits should be filled in. */
 292     struct r300_texture_fb_state fb_state;
 293
 294     /* Buffer tiling */
 295     enum r300_buffer_tiling microtile, macrotile;
 296 };
 297
 298 struct r300_vertex_info {
 299     /* Parent class */
 300     struct vertex_info vinfo;
 301
 302     /* R300_VAP_PROG_STREAK_CNTL_[0-7] */
 303     uint32_t vap_prog_stream_cntl[8];
 304     /* R300_VAP_PROG_STREAK_CNTL_EXT_[0-7] */
 305     uint32_t vap_prog_stream_cntl_ext[8];
 306 };
 307
 308 struct r300_vertex_element_state {
 309     unsigned count;
 310     struct pipe_vertex_element velem[PIPE_MAX_ATTRIBS];
 311
 312     struct r300_vertex_stream_state vertex_stream;
 313 };
 314
 315 extern struct pipe_viewport_state r300_viewport_identity;
 316
 317 struct r300_context {
 318     /* Parent class */
 319     struct pipe_context context;
 320
 321     /* Emission of drawing packets. */
 322     void (*emit_draw_arrays_immediate)(
 323             struct r300_context *r300,
 324             unsigned mode, unsigned start, unsigned count);
 325
 326     void (*emit_draw_arrays)(
 327             struct r300_context *r300,
 328             unsigned mode, unsigned count);
 329
 330     void (*emit_draw_elements)(
 331             struct r300_context *r300, struct pipe_resource* indexBuffer,
 332             unsigned indexSize, unsigned minIndex, unsigned maxIndex,
 333             unsigned mode, unsigned start, unsigned count);
 334
 335
 336     /* The interface to the windowing system, etc. */
 337     struct r300_winsys_screen *rws;
 338     /* Screen. */
 339     struct r300_screen *screen;
 340     /* Draw module. Used mostly for SW TCL. */
 341     struct draw_context* draw;
 342     /* Accelerated blit support. */
 343     struct blitter_context* blitter;
 344
 345     /* Vertex buffer for rendering. */
 346     struct pipe_resource* vbo;
 347     /* Offset into the VBO. */
 348     size_t vbo_offset;
 349
 350     /* Occlusion query buffer. */
 351     struct pipe_resource* oqbo;
 352     /* Query list. */
 353     struct r300_query *query_current;
 354     struct r300_query query_list;
 355
 356     /* Various CSO state objects. */
 357     /* Beginning of atom list. */
 358     struct r300_atom atom_list;
 359     /* Blend state. */
 360     struct r300_atom blend_state;
 361     /* Blend color state. */
 362     struct r300_atom blend_color_state;
 363     /* User clip planes. */
 364     struct r300_atom clip_state;
 365     /* Shader constants. */
 366     struct r300_constant_buffer shader_constants[PIPE_SHADER_TYPES];
 367     /* Depth, stencil, and alpha state. */
 368     struct r300_atom dsa_state;
 369     /* Fragment shader. */
 370     struct r300_atom fs;
 371     /* Fragment shader RC_CONSTANT_STATE variables. */
 372     struct r300_atom fs_rc_constant_state;
 373     /* Fragment shader constant buffer. */
 374     struct r300_atom fs_constants;
 375     /* Framebuffer state. */
 376     struct r300_atom fb_state;
 377     /* Rasterizer state. */
 378     struct r300_atom rs_state;
 379     /* RS block state. */
 380     struct r300_atom rs_block_state;
 381     /* Scissor state. */
 382     struct r300_atom scissor_state;
 383     /* Textures state. */
 384     struct r300_atom textures_state;
 385     /* Vertex stream formatting state. */
 386     struct r300_atom vertex_stream_state;
 387     /* VAP (vertex shader) output mapping state. */
 388     struct r300_atom vap_output_state;
 389     /* Vertex shader. */
 390     struct r300_atom vs_state;
 391     /* Viewport state. */
 392     struct r300_atom viewport_state;
 393     /* ZTOP state. */
 394     struct r300_atom ztop_state;
 395     /* PVS flush. */
 396     struct r300_atom pvs_flush;
 397     /* Texture cache invalidate. */
 398     struct r300_atom texture_cache_inval;
 399
 400     /* Invariant state. This must be emitted to get the engine started. */
 401     struct r300_atom invariant_state;
 402
 403     /* Vertex buffers for Gallium. */
 404     struct pipe_vertex_buffer vertex_buffer[PIPE_MAX_ATTRIBS];
 405     int vertex_buffer_count;
 406     int vertex_buffer_max_index;
 407     /* Vertex elements for Gallium. */
 408     struct r300_vertex_element_state *velems;
 409     bool any_user_vbs;
 410
 411     /* Vertex info for Draw. */
 412     struct vertex_info vertex_info;
 413
 414     struct pipe_stencil_ref stencil_ref;
 415
 416     struct pipe_clip_state clip;
 417
 418     struct pipe_viewport_state viewport;
 419
 420     /* Bitmask of dirty state objects. */
 421     uint32_t dirty_state;
 422     /* Flag indicating whether or not the HW is dirty. */
 423     uint32_t dirty_hw;
 424     /* Whether polygon offset is enabled. */
 425     boolean polygon_offset_enabled;
 426     /* Z buffer bit depth. */
 427     uint32_t zbuffer_bpp;
 428     /* Whether rendering is conditional and should be skipped. */
 429     boolean skip_rendering;
 430     /* Whether the two-sided stencil ref value is different for front and
 431      * back faces, and fallback should be used for r3xx-r4xx. */
 432     boolean stencil_ref_bf_fallback;
 433     /* Point sprites texcoord index,  1 bit per texcoord */
 434     int sprite_coord_enable;
 435
 436     /* upload managers */
 437     struct u_upload_mgr *upload_vb;
 438     struct u_upload_mgr *upload_ib;
 439 };
 440
 441 /* Convenience cast wrapper. */
 442 static INLINE struct r300_texture* r300_texture(struct pipe_resource* tex)
 443 {
 444     return (struct r300_texture*)tex;
 445 }
 446
 447 static INLINE struct r300_context* r300_context(struct pipe_context* context)
 448 {
 449     return (struct r300_context*)context;
 450 }
 451
 452 static INLINE struct r300_fragment_shader *r300_fs(struct r300_context *r300)
 453 {
 454     return (struct r300_fragment_shader*)r300->fs.state;
 455 }
 456
 457 struct pipe_context* r300_create_context(struct pipe_screen* screen,
 458                                          void *priv);
 459
 460 /* Context initialization. */
 461 struct draw_stage* r300_draw_stage(struct r300_context* r300);
 462 void r300_init_state_functions(struct r300_context* r300);
 463 void r300_init_resource_functions(struct r300_context* r300);
 464
 465 static INLINE boolean CTX_DBG_ON(struct r300_context * ctx, unsigned flags)
 466 {
 467     return SCREEN_DBG_ON(ctx->screen, flags);
 468 }
 469
 470 static INLINE void CTX_DBG(struct r300_context * ctx, unsigned flags,
 471                        const char * fmt, ...)
 472 {
 473     if (CTX_DBG_ON(ctx, flags)) {
 474         va_list va;
 475         va_start(va, fmt);
 476         vfprintf(stderr, fmt, va);
 477         va_end(va);
 478     }
 479 }
 480
 481 #define DBG_ON  CTX_DBG_ON
 482 #define DBG     CTX_DBG
 483
 484 #endif /* R300_CONTEXT_H */