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 *program;
 108    uint program_len;
 109
 110    /**
 111     * constants introduced during translation.
 112     * These are placed at the end of the constant buffer and grow toward
 113     * the beginning (eg: slot 31, 30 29, ...)
 114     * User-provided constants start at 0.
 115     * This allows both types of constants to co-exist (until there's too many)
 116     * and doesn't require regenerating/changing the fragment program to
 117     * shuffle constants around.
 118     */
 119    uint num_constants;
 120    float constants[I915_MAX_CONSTANT][4];
 121
 122    /**
 123     * Status of each constant
 124     * if I915_CONSTFLAG_PARAM, the value must be taken from the corresponding
 125     * slot of the user's constant buffer. (set by pipe->set_constant_buffer())
 126     * Else, the bitmask indicates which components are occupied by immediates.
 127     */
 128    ubyte constant_flags[I915_MAX_CONSTANT];
 129
 130    /**
 131     * The mapping between generics and hw texture coords.
 132     * We need to share this between the vertex and fragment stages.
 133     **/
 134    int generic_mapping[I915_TEX_UNITS];
 135 };
 136
 137
 138 struct i915_cache_context;
 139
 140 /* Use to calculate differences between state emitted to hardware and
 141  * current driver-calculated state.
 142  */
 143 struct i915_state
 144 {
 145    unsigned immediate[I915_MAX_IMMEDIATE];
 146    unsigned dynamic[I915_MAX_DYNAMIC];
 147
 148    /** number of constants passed in through a constant buffer */
 149    uint num_user_constants[PIPE_SHADER_TYPES];
 150
 151    /* texture sampler state */
 152    unsigned sampler[I915_TEX_UNITS][3];
 153    unsigned sampler_enable_flags;
 154    unsigned sampler_enable_nr;
 155
 156    /* texture image buffers */
 157    unsigned texbuffer[I915_TEX_UNITS][2];
 158
 159    /** Describes the current hardware vertex layout */
 160    struct vertex_info vertex_info;
 161
 162    /* static state (dst/depth buffer state) */
 163    struct i915_winsys_buffer *cbuf_bo;
 164    unsigned cbuf_flags;
 165    struct i915_winsys_buffer *depth_bo;
 166    unsigned depth_flags;
 167    unsigned dst_buf_vars;
 168    uint32_t draw_offset;
 169    uint32_t draw_size;
 170
 171    unsigned id;                 /* track lost context events */
 172 };
 173
 174 struct i915_blend_state {
 175    unsigned iab;
 176    unsigned modes4;
 177    unsigned LIS5;
 178    unsigned LIS6;
 179 };
 180
 181 struct i915_depth_stencil_state {
 182    unsigned stencil_modes4;
 183    unsigned bfo[2];
 184    unsigned stencil_LIS5;
 185    unsigned depth_LIS6;
 186 };
 187
 188 struct i915_rasterizer_state {
 189    unsigned light_twoside : 1;
 190    unsigned st;
 191    enum interp_mode color_interp;
 192
 193    unsigned LIS4;
 194    unsigned LIS7;
 195    unsigned sc[1];
 196
 197    struct pipe_rasterizer_state templ;
 198
 199    union { float f; unsigned u; } ds[2];
 200 };
 201
 202 struct i915_sampler_state {
 203    unsigned state[3];
 204    const struct pipe_sampler_state *templ;
 205    unsigned minlod;
 206    unsigned maxlod;
 207 };
 208
 209 struct i915_velems_state {
 210    unsigned count;
 211    struct pipe_vertex_element velem[PIPE_MAX_ATTRIBS];
 212 };
 213
 214
 215 struct i915_context {
 216    struct pipe_context base;
 217
 218    struct i915_winsys *iws;
 219
 220    struct draw_context *draw;
 221
 222    /* The most recent drawing state as set by the driver:
 223     */
 224    const struct i915_blend_state           *blend;
 225    const struct i915_sampler_state         *sampler[PIPE_MAX_SAMPLERS];
 226    const struct i915_depth_stencil_state   *depth_stencil;
 227    const struct i915_rasterizer_state      *rasterizer;
 228
 229    struct i915_fragment_shader *fs;
 230
 231    struct pipe_blend_color blend_color;
 232    struct pipe_stencil_ref stencil_ref;
 233    struct pipe_clip_state clip;
 234    struct pipe_resource *constants[PIPE_SHADER_TYPES];
 235    struct pipe_framebuffer_state framebuffer;
 236    struct pipe_poly_stipple poly_stipple;
 237    struct pipe_scissor_state scissor;
 238    struct pipe_sampler_view *fragment_sampler_views[PIPE_MAX_SAMPLERS];
 239    struct pipe_viewport_state viewport;
 240    struct pipe_index_buffer index_buffer;
 241
 242    unsigned dirty;
 243
 244    unsigned num_samplers;
 245    unsigned num_fragment_sampler_views;
 246
 247    struct i915_winsys_batchbuffer *batch;
 248
 249    /** Vertex buffer */
 250    struct i915_winsys_buffer *vbo;
 251    size_t vbo_offset;
 252    unsigned vbo_flushed;
 253
 254    struct i915_state current;
 255    unsigned hardware_dirty;
 256    unsigned immediate_dirty : I915_MAX_IMMEDIATE;
 257    unsigned dynamic_dirty : I915_MAX_DYNAMIC;
 258    unsigned static_dirty : 4;
 259    unsigned flush_dirty : 2;
 260
 261    struct i915_winsys_buffer *validation_buffers[2 + 1 + I915_TEX_UNITS];
 262    int num_validation_buffers;
 263
 264    struct util_slab_mempool transfer_pool;
 265    struct util_slab_mempool texture_transfer_pool;
 266
 267    /* state for tracking flushes */
 268    int last_fired_vertices;
 269    int fired_vertices;
 270    int queued_vertices;
 271
 272    /** blitter/hw-clear */
 273    struct blitter_context* blitter;
 274
 275    /** State tracking needed by u_blitter for save/restore. */
 276    void *saved_fs;
 277    void (*saved_bind_fs_state)(struct pipe_context *pipe, void *shader);
 278    void *saved_vs;
 279    struct pipe_clip_state saved_clip;
 280    struct i915_velems_state *saved_velems;
 281    unsigned saved_nr_vertex_buffers;
 282    struct pipe_vertex_buffer saved_vertex_buffers[PIPE_MAX_ATTRIBS];
 283    unsigned saved_nr_samplers;
 284    void *saved_samplers[PIPE_MAX_SAMPLERS];
 285    void (*saved_bind_sampler_states)(struct pipe_context *pipe,
 286                                      unsigned num, void **sampler);
 287    unsigned saved_nr_sampler_views;
 288    struct pipe_sampler_view *saved_sampler_views[PIPE_MAX_SAMPLERS];
 289    void (*saved_set_sampler_views)(struct pipe_context *pipe,
 290                                    unsigned num, struct pipe_sampler_view **views);
 291 };
 292
 293 /* A flag for each state_tracker state object:
 294  */
 295 #define I915_NEW_VIEWPORT      0x1
 296 #define I915_NEW_RASTERIZER    0x2
 297 #define I915_NEW_FS            0x4
 298 #define I915_NEW_BLEND         0x8
 299 #define I915_NEW_CLIP          0x10
 300 #define I915_NEW_SCISSOR       0x20
 301 #define I915_NEW_STIPPLE       0x40
 302 #define I915_NEW_FRAMEBUFFER   0x80
 303 #define I915_NEW_ALPHA_TEST    0x100
 304 #define I915_NEW_DEPTH_STENCIL 0x200
 305 #define I915_NEW_SAMPLER       0x400
 306 #define I915_NEW_SAMPLER_VIEW  0x800
 307 #define I915_NEW_VS_CONSTANTS  0x1000
 308 #define I915_NEW_FS_CONSTANTS  0x2000
 309 #define I915_NEW_GS_CONSTANTS  0x4000
 310 #define I915_NEW_VBO           0x8000
 311 #define I915_NEW_VS            0x10000
 312
 313
 314 /* Driver's internally generated state flags:
 315  */
 316 #define I915_NEW_VERTEX_FORMAT    0x10000
 317
 318
 319 /* Dirty flags for hardware emit
 320  */
 321 #define I915_HW_STATIC            (1<<I915_CACHE_STATIC)
 322 #define I915_HW_DYNAMIC           (1<<I915_CACHE_DYNAMIC)
 323 #define I915_HW_SAMPLER           (1<<I915_CACHE_SAMPLER)
 324 #define I915_HW_MAP               (1<<I915_CACHE_MAP)
 325 #define I915_HW_PROGRAM           (1<<I915_CACHE_PROGRAM)
 326 #define I915_HW_CONSTANTS         (1<<I915_CACHE_CONSTANTS)
 327 #define I915_HW_IMMEDIATE         (1<<(I915_MAX_CACHE+0))
 328 #define I915_HW_INVARIANT         (1<<(I915_MAX_CACHE+1))
 329 #define I915_HW_FLUSH             (1<<(I915_MAX_CACHE+1))
 330
 331 /* hw flush handling */
 332 #define I915_FLUSH_CACHE                1
 333 #define I915_PIPELINE_FLUSH             2
 334
 335 /* split up static state */
 336 #define I915_DST_BUF_COLOR              1
 337 #define I915_DST_BUF_DEPTH              2
 338 #define I915_DST_VARS                   4
 339 #define I915_DST_RECT                   8
 340
 341 static INLINE
 342 void i915_set_flush_dirty(struct i915_context *i915, unsigned flush)
 343 {
 344    i915->hardware_dirty |= I915_HW_FLUSH;
 345    i915->flush_dirty |= flush;
 346 }
 347
 348
 349 /***********************************************************************
 350  * i915_prim_emit.c:
 351  */
 352 struct draw_stage *i915_draw_render_stage( struct i915_context *i915 );
 353
 354
 355 /***********************************************************************
 356  * i915_prim_vbuf.c:
 357  */
 358 struct draw_stage *i915_draw_vbuf_stage( struct i915_context *i915 );
 359
 360
 361 /***********************************************************************
 362  * i915_state_emit.c:
 363  */
 364 void i915_emit_hardware_state(struct i915_context *i915 );
 365
 366
 367
 368 /***********************************************************************
 369  * i915_clear.c:
 370  */
 371 void i915_clear_blitter(struct pipe_context *pipe, unsigned buffers, const float *rgba,
 372                         double depth, unsigned stencil);
 373 void i915_clear_render(struct pipe_context *pipe, unsigned buffers, const float *rgba,
 374                        double depth, unsigned stencil);
 375 void i915_clear_emit(struct pipe_context *pipe, unsigned buffers, const float *rgba,
 376                      double depth, unsigned stencil,
 377                      unsigned destx, unsigned desty, unsigned width, unsigned height);
 378
 379
 380 /***********************************************************************
 381  *
 382  */
 383 void i915_init_state_functions( struct i915_context *i915 );
 384 void i915_init_fixup_state_functions( struct i915_context *i915 );
 385 void i915_init_flush_functions( struct i915_context *i915 );
 386 void i915_init_string_functions( struct i915_context *i915 );
 387
 388
 389 /************************************************************************
 390  * i915_context.c
 391  */
 392 struct pipe_context *i915_create_context(struct pipe_screen *screen,
 393                                          void *priv);
 394
 395
 396 /***********************************************************************
 397  * Inline conversion functions.  These are better-typed than the
 398  * macros used previously:
 399  */
 400 static INLINE struct i915_context *
 401 i915_context( struct pipe_context *pipe )
 402 {
 403    return (struct i915_context *)pipe;
 404 }
 405
 406
 407 #endif