src/gallium/drivers/i915/i915_context.h

   1  /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #ifndef I915_CONTEXT_H
  29 #define I915_CONTEXT_H
  30
  31
  32 #include "pipe/p_context.h"
  33 #include "pipe/p_defines.h"
  34 #include "pipe/p_state.h"
  35
  36 #include "draw/draw_vertex.h"
  37
  38 #include "tgsi/tgsi_scan.h"
  39
  40 #include "util/u_slab.h"
  41 #include "util/u_blitter.h"
  42
  43
  44 struct i915_winsys;
  45 struct i915_winsys_buffer;
  46 struct i915_winsys_batchbuffer;
  47
  48
  49 #define I915_TEX_UNITS 8
  50
  51 #define I915_DYNAMIC_MODES4       0
  52 #define I915_DYNAMIC_DEPTHSCALE_0 1 /* just the header */
  53 #define I915_DYNAMIC_DEPTHSCALE_1 2
  54 #define I915_DYNAMIC_IAB          3
  55 #define I915_DYNAMIC_BC_0         4 /* just the header */
  56 #define I915_DYNAMIC_BC_1         5
  57 #define I915_DYNAMIC_BFO_0        6
  58 #define I915_DYNAMIC_BFO_1        7
  59 #define I915_DYNAMIC_STP_0        8
  60 #define I915_DYNAMIC_STP_1        9
  61 #define I915_DYNAMIC_SC_ENA_0     10
  62 #define I915_DYNAMIC_SC_RECT_0    11
  63 #define I915_DYNAMIC_SC_RECT_1    12
  64 #define I915_DYNAMIC_SC_RECT_2    13
  65 #define I915_MAX_DYNAMIC          14
  66
  67
  68 #define I915_IMMEDIATE_S0         0
  69 #define I915_IMMEDIATE_S1         1
  70 #define I915_IMMEDIATE_S2         2
  71 #define I915_IMMEDIATE_S3         3
  72 #define I915_IMMEDIATE_S4         4
  73 #define I915_IMMEDIATE_S5         5
  74 #define I915_IMMEDIATE_S6         6
  75 #define I915_IMMEDIATE_S7         7
  76 #define I915_MAX_IMMEDIATE        8
  77
  78 /* These must mach the order of LI0_STATE_* bits, as they will be used
  79  * to generate hardware packets:
  80  */
  81 #define I915_CACHE_STATIC         0
  82 #define I915_CACHE_DYNAMIC        1 /* handled specially */
  83 #define I915_CACHE_SAMPLER        2
  84 #define I915_CACHE_MAP            3
  85 #define I915_CACHE_PROGRAM        4
  86 #define I915_CACHE_CONSTANTS      5
  87 #define I915_MAX_CACHE            6
  88
  89 #define I915_MAX_CONSTANT  32
  90
  91
  92 /** See constant_flags[] below */
  93 #define I915_CONSTFLAG_USER 0x1f
  94
  95
  96 /**
  97  * Subclass of pipe_shader_state
  98  */
  99 struct i915_fragment_shader
 100 {
 101    struct pipe_shader_state state;
 102
 103    struct tgsi_shader_info info;
 104
 105    struct draw_fragment_shader *draw_data;
 106
 107    uint *decl;
 108    uint decl_len;
 109
 110    uint *program;
 111    uint program_len;
 112
 113    /**
 114     * constants introduced during translation.
 115     * These are placed at the end of the constant buffer and grow toward
 116     * the beginning (eg: slot 31, 30 29, ...)
 117     * User-provided constants start at 0.
 118     * This allows both types of constants to co-exist (until there's too many)
 119     * and doesn't require regenerating/changing the fragment program to
 120     * shuffle constants around.
 121     */
 122    uint num_constants;
 123    float constants[I915_MAX_CONSTANT][4];
 124
 125    /**
 126     * Status of each constant
 127     * if I915_CONSTFLAG_PARAM, the value must be taken from the corresponding
 128     * slot of the user's constant buffer. (set by pipe->set_constant_buffer())
 129     * Else, the bitmask indicates which components are occupied by immediates.
 130     */
 131    ubyte constant_flags[I915_MAX_CONSTANT];
 132
 133    /**
 134     * The mapping between generics and hw texture coords.
 135     * We need to share this between the vertex and fragment stages.
 136     **/
 137    int generic_mapping[I915_TEX_UNITS];
 138 };
 139
 140
 141 struct i915_cache_context;
 142
 143 /* Use to calculate differences between state emitted to hardware and
 144  * current driver-calculated state.
 145  */
 146 struct i915_state
 147 {
 148    unsigned immediate[I915_MAX_IMMEDIATE];
 149    unsigned dynamic[I915_MAX_DYNAMIC];
 150
 151    /** number of constants passed in through a constant buffer */
 152    uint num_user_constants[PIPE_SHADER_TYPES];
 153
 154    /* texture sampler state */
 155    unsigned sampler[I915_TEX_UNITS][3];
 156    unsigned sampler_enable_flags;
 157    unsigned sampler_enable_nr;
 158
 159    /* texture image buffers */
 160    unsigned texbuffer[I915_TEX_UNITS][2];
 161
 162    /** Describes the current hardware vertex layout */
 163    struct vertex_info vertex_info;
 164
 165    /* static state (dst/depth buffer state) */
 166    struct i915_winsys_buffer *cbuf_bo;
 167    unsigned cbuf_flags;
 168    struct i915_winsys_buffer *depth_bo;
 169    unsigned depth_flags;
 170    unsigned dst_buf_vars;
 171    uint32_t draw_offset;
 172    uint32_t draw_size;
 173    uint32_t target_fixup_format;
 174    uint32_t fixup_swizzle;
 175
 176    unsigned id;                 /* track lost context events */
 177 };
 178
 179 struct i915_blend_state {
 180    unsigned iab;
 181    unsigned modes4;
 182    unsigned LIS5;
 183    unsigned LIS6;
 184 };
 185
 186 struct i915_depth_stencil_state {
 187    unsigned stencil_modes4;
 188    unsigned bfo[2];
 189    unsigned stencil_LIS5;
 190    unsigned depth_LIS6;
 191 };
 192
 193 struct i915_rasterizer_state {
 194    struct pipe_rasterizer_state templ;
 195
 196    unsigned light_twoside : 1;
 197    unsigned st;
 198    enum interp_mode color_interp;
 199
 200    unsigned LIS4;
 201    unsigned LIS7;
 202    unsigned sc[1];
 203
 204    union { float f; unsigned u; } ds[2];
 205 };
 206
 207 struct i915_sampler_state {
 208    struct pipe_sampler_state templ;
 209    unsigned state[3];
 210    unsigned minlod;
 211    unsigned maxlod;
 212 };
 213
 214 struct i915_velems_state {
 215    unsigned count;
 216    struct pipe_vertex_element velem[PIPE_MAX_ATTRIBS];
 217 };
 218
 219
 220 struct i915_context {
 221    struct pipe_context base;
 222
 223    struct i915_winsys *iws;
 224
 225    struct draw_context *draw;
 226
 227    /* The most recent drawing state as set by the driver:
 228     */
 229    const struct i915_blend_state           *blend;
 230    const struct i915_sampler_state         *sampler[PIPE_MAX_SAMPLERS];
 231    struct pipe_sampler_state *vertex_samplers[PIPE_MAX_SAMPLERS];
 232    const struct i915_depth_stencil_state   *depth_stencil;
 233    const struct i915_rasterizer_state      *rasterizer;
 234
 235    struct i915_fragment_shader *fs;
 236
 237    void *vs;
 238
 239    struct i915_velems_state *velems;
 240    unsigned nr_vertex_buffers;
 241    struct pipe_vertex_buffer vertex_buffers[PIPE_MAX_ATTRIBS];
 242
 243    struct pipe_blend_color blend_color;
 244    struct pipe_stencil_ref stencil_ref;
 245    struct pipe_clip_state clip;
 246    struct pipe_resource *constants[PIPE_SHADER_TYPES];
 247    struct pipe_framebuffer_state framebuffer;
 248    struct pipe_poly_stipple poly_stipple;
 249    struct pipe_scissor_state scissor;
 250    struct pipe_sampler_view *fragment_sampler_views[PIPE_MAX_SAMPLERS];
 251    struct pipe_sampler_view *vertex_sampler_views[PIPE_MAX_SAMPLERS];
 252    struct pipe_viewport_state viewport;
 253    struct pipe_index_buffer index_buffer;
 254
 255    unsigned dirty;
 256
 257    struct pipe_resource *mapped_vs_tex[PIPE_MAX_SAMPLERS];
 258    struct i915_winsys_buffer* mapped_vs_tex_buffer[PIPE_MAX_SAMPLERS];
 259
 260    unsigned num_samplers;
 261    unsigned num_fragment_sampler_views;
 262    unsigned num_vertex_samplers;
 263    unsigned num_vertex_sampler_views;
 264
 265    struct i915_winsys_batchbuffer *batch;
 266
 267    /** Vertex buffer */
 268    struct i915_winsys_buffer *vbo;
 269    size_t vbo_offset;
 270    unsigned vbo_flushed;
 271
 272    struct i915_state current;
 273    unsigned hardware_dirty;
 274    unsigned immediate_dirty : I915_MAX_IMMEDIATE;
 275    unsigned dynamic_dirty : I915_MAX_DYNAMIC;
 276    unsigned static_dirty : 4;
 277    unsigned flush_dirty : 2;
 278
 279    struct i915_winsys_buffer *validation_buffers[2 + 1 + I915_TEX_UNITS];
 280    int num_validation_buffers;
 281
 282    struct util_slab_mempool transfer_pool;
 283    struct util_slab_mempool texture_transfer_pool;
 284
 285    /* state for tracking flushes */
 286    int last_fired_vertices;
 287    int fired_vertices;
 288    int queued_vertices;
 289
 290    /** blitter/hw-clear */
 291    struct blitter_context* blitter;
 292
 293    /** State tracking needed by u_blitter for save/restore. */
 294    void (*saved_bind_fs_state)(struct pipe_context *pipe, void *shader);
 295    void (*saved_bind_sampler_states)(struct pipe_context *pipe,
 296                                      unsigned num, void **sampler);
 297    void (*saved_set_sampler_views)(struct pipe_context *pipe,
 298                                    unsigned num, struct pipe_sampler_view **views);
 299 };
 300
 301 /* A flag for each state_tracker state object:
 302  */
 303 #define I915_NEW_VIEWPORT      0x1
 304 #define I915_NEW_RASTERIZER    0x2
 305 #define I915_NEW_FS            0x4
 306 #define I915_NEW_BLEND         0x8
 307 #define I915_NEW_CLIP          0x10
 308 #define I915_NEW_SCISSOR       0x20
 309 #define I915_NEW_STIPPLE       0x40
 310 #define I915_NEW_FRAMEBUFFER   0x80
 311 #define I915_NEW_ALPHA_TEST    0x100
 312 #define I915_NEW_DEPTH_STENCIL 0x200
 313 #define I915_NEW_SAMPLER       0x400
 314 #define I915_NEW_SAMPLER_VIEW  0x800
 315 #define I915_NEW_VS_CONSTANTS  0x1000
 316 #define I915_NEW_FS_CONSTANTS  0x2000
 317 #define I915_NEW_GS_CONSTANTS  0x4000
 318 #define I915_NEW_VBO           0x8000
 319 #define I915_NEW_VS            0x10000
 320
 321
 322 /* Driver's internally generated state flags:
 323  */
 324 #define I915_NEW_VERTEX_FORMAT    0x10000
 325
 326
 327 /* Dirty flags for hardware emit
 328  */
 329 #define I915_HW_STATIC            (1<<I915_CACHE_STATIC)
 330 #define I915_HW_DYNAMIC           (1<<I915_CACHE_DYNAMIC)
 331 #define I915_HW_SAMPLER           (1<<I915_CACHE_SAMPLER)
 332 #define I915_HW_MAP               (1<<I915_CACHE_MAP)
 333 #define I915_HW_PROGRAM           (1<<I915_CACHE_PROGRAM)
 334 #define I915_HW_CONSTANTS         (1<<I915_CACHE_CONSTANTS)
 335 #define I915_HW_IMMEDIATE         (1<<(I915_MAX_CACHE+0))
 336 #define I915_HW_INVARIANT         (1<<(I915_MAX_CACHE+1))
 337 #define I915_HW_FLUSH             (1<<(I915_MAX_CACHE+1))
 338
 339 /* hw flush handling */
 340 #define I915_FLUSH_CACHE                1
 341 #define I915_PIPELINE_FLUSH             2
 342
 343 /* split up static state */
 344 #define I915_DST_BUF_COLOR              1
 345 #define I915_DST_BUF_DEPTH              2
 346 #define I915_DST_VARS                   4
 347 #define I915_DST_RECT                   8
 348
 349 static INLINE
 350 void i915_set_flush_dirty(struct i915_context *i915, unsigned flush)
 351 {
 352    i915->hardware_dirty |= I915_HW_FLUSH;
 353    i915->flush_dirty |= flush;
 354 }
 355
 356
 357 /***********************************************************************
 358  * i915_prim_emit.c:
 359  */
 360 struct draw_stage *i915_draw_render_stage( struct i915_context *i915 );
 361
 362
 363 /***********************************************************************
 364  * i915_prim_vbuf.c:
 365  */
 366 struct draw_stage *i915_draw_vbuf_stage( struct i915_context *i915 );
 367
 368
 369 /***********************************************************************
 370  * i915_state.c:
 371  */
 372 void i915_prepare_vertex_sampling(struct i915_context *i915);
 373 void i915_cleanup_vertex_sampling(struct i915_context *i915);
 374
 375
 376
 377 /***********************************************************************
 378  * i915_state_emit.c:
 379  */
 380 void i915_emit_hardware_state(struct i915_context *i915 );
 381
 382
 383
 384 /***********************************************************************
 385  * i915_clear.c:
 386  */
 387 void i915_clear_blitter(struct pipe_context *pipe, unsigned buffers,
 388                         const union pipe_color_union *color,
 389                         double depth, unsigned stencil);
 390 void i915_clear_render(struct pipe_context *pipe, unsigned buffers,
 391                        const union pipe_color_union *color,
 392                        double depth, unsigned stencil);
 393 void i915_clear_emit(struct pipe_context *pipe, unsigned buffers,
 394                      const union pipe_color_union *color,
 395                      double depth, unsigned stencil,
 396                      unsigned destx, unsigned desty, unsigned width, unsigned height);
 397
 398
 399 /***********************************************************************
 400  *
 401  */
 402 void i915_init_state_functions( struct i915_context *i915 );
 403 void i915_init_fixup_state_functions( struct i915_context *i915 );
 404 void i915_init_flush_functions( struct i915_context *i915 );
 405 void i915_init_string_functions( struct i915_context *i915 );
 406
 407
 408 /************************************************************************
 409  * i915_context.c
 410  */
 411 struct pipe_context *i915_create_context(struct pipe_screen *screen,
 412                                          void *priv);
 413
 414
 415 /***********************************************************************
 416  * Inline conversion functions.  These are better-typed than the
 417  * macros used previously:
 418  */
 419 static INLINE struct i915_context *
 420 i915_context( struct pipe_context *pipe )
 421 {
 422    return (struct i915_context *)pipe;
 423 }
 424
 425
 426 #endif