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    uint *program;
 106    uint program_len;
 107
 108    /**
 109     * constants introduced during translation.
 110     * These are placed at the end of the constant buffer and grow toward
 111     * the beginning (eg: slot 31, 30 29, ...)
 112     * User-provided constants start at 0.
 113     * This allows both types of constants to co-exist (until there's too many)
 114     * and doesn't require regenerating/changing the fragment program to
 115     * shuffle constants around.
 116     */
 117    uint num_constants;
 118    float constants[I915_MAX_CONSTANT][4];
 119
 120    /**
 121     * Status of each constant
 122     * if I915_CONSTFLAG_PARAM, the value must be taken from the corresponding
 123     * slot of the user's constant buffer. (set by pipe->set_constant_buffer())
 124     * Else, the bitmask indicates which components are occupied by immediates.
 125     */
 126    ubyte constant_flags[I915_MAX_CONSTANT];
 127 };
 128
 129
 130 struct i915_cache_context;
 131
 132 /* Use to calculate differences between state emitted to hardware and
 133  * current driver-calculated state.
 134  */
 135 struct i915_state
 136 {
 137    unsigned immediate[I915_MAX_IMMEDIATE];
 138    unsigned dynamic[I915_MAX_DYNAMIC];
 139
 140    /** number of constants passed in through a constant buffer */
 141    uint num_user_constants[PIPE_SHADER_TYPES];
 142
 143    /* texture sampler state */
 144    unsigned sampler[I915_TEX_UNITS][3];
 145    unsigned sampler_enable_flags;
 146    unsigned sampler_enable_nr;
 147
 148    /* texture image buffers */
 149    unsigned texbuffer[I915_TEX_UNITS][2];
 150
 151    /** Describes the current hardware vertex layout */
 152    struct vertex_info vertex_info;
 153
 154    /* static state (dst/depth buffer state) */
 155    struct i915_winsys_buffer *cbuf_bo;
 156    unsigned cbuf_flags;
 157    struct i915_winsys_buffer *depth_bo;
 158    unsigned depth_flags;
 159    unsigned dst_buf_vars;
 160    uint32_t draw_offset;
 161    uint32_t draw_size;
 162
 163    unsigned id;                 /* track lost context events */
 164 };
 165
 166 struct i915_blend_state {
 167    unsigned iab;
 168    unsigned modes4;
 169    unsigned LIS5;
 170    unsigned LIS6;
 171 };
 172
 173 struct i915_depth_stencil_state {
 174    unsigned stencil_modes4;
 175    unsigned bfo[2];
 176    unsigned stencil_LIS5;
 177    unsigned depth_LIS6;
 178 };
 179
 180 struct i915_rasterizer_state {
 181    unsigned light_twoside : 1;
 182    unsigned st;
 183    enum interp_mode color_interp;
 184
 185    unsigned LIS4;
 186    unsigned LIS7;
 187    unsigned sc[1];
 188
 189    struct pipe_rasterizer_state templ;
 190
 191    union { float f; unsigned u; } ds[2];
 192 };
 193
 194 struct i915_sampler_state {
 195    unsigned state[3];
 196    const struct pipe_sampler_state *templ;
 197    unsigned minlod;
 198    unsigned maxlod;
 199 };
 200
 201 struct i915_velems_state {
 202    unsigned count;
 203    struct pipe_vertex_element velem[PIPE_MAX_ATTRIBS];
 204 };
 205
 206
 207 struct i915_context {
 208    struct pipe_context base;
 209
 210    struct i915_winsys *iws;
 211
 212    struct draw_context *draw;
 213
 214    /* The most recent drawing state as set by the driver:
 215     */
 216    const struct i915_blend_state           *blend;
 217    const struct i915_sampler_state         *sampler[PIPE_MAX_SAMPLERS];
 218    const struct i915_depth_stencil_state   *depth_stencil;
 219    const struct i915_rasterizer_state      *rasterizer;
 220
 221    struct i915_fragment_shader *fs;
 222
 223    struct pipe_blend_color blend_color;
 224    struct pipe_stencil_ref stencil_ref;
 225    struct pipe_clip_state clip;
 226    struct pipe_resource *constants[PIPE_SHADER_TYPES];
 227    struct pipe_framebuffer_state framebuffer;
 228    struct pipe_poly_stipple poly_stipple;
 229    struct pipe_scissor_state scissor;
 230    struct pipe_sampler_view *fragment_sampler_views[PIPE_MAX_SAMPLERS];
 231    struct pipe_viewport_state viewport;
 232    struct pipe_index_buffer index_buffer;
 233
 234    unsigned dirty;
 235
 236    unsigned num_samplers;
 237    unsigned num_fragment_sampler_views;
 238
 239    struct i915_winsys_batchbuffer *batch;
 240
 241    /** Vertex buffer */
 242    struct i915_winsys_buffer *vbo;
 243    size_t vbo_offset;
 244    unsigned vbo_flushed;
 245
 246    struct i915_state current;
 247    unsigned hardware_dirty;
 248    unsigned immediate_dirty : I915_MAX_IMMEDIATE;
 249    unsigned dynamic_dirty : I915_MAX_DYNAMIC;
 250    unsigned static_dirty : 4;
 251    unsigned flush_dirty : 2;
 252
 253    struct i915_winsys_buffer *validation_buffers[2 + 1 + I915_TEX_UNITS];
 254    int num_validation_buffers;
 255
 256    struct util_slab_mempool transfer_pool;
 257
 258    /** blitter/hw-clear */
 259    struct blitter_context* blitter;
 260
 261    /** State tracking needed by u_blitter for save/restore. */
 262    void *saved_fs;
 263    void (*saved_bind_fs_state)(struct pipe_context *pipe, void *shader);
 264    void *saved_vs;
 265    struct pipe_clip_state saved_clip;
 266    struct i915_velems_state *saved_velems;
 267    unsigned saved_nr_vertex_buffers;
 268    struct pipe_vertex_buffer saved_vertex_buffers[PIPE_MAX_ATTRIBS];
 269    unsigned saved_nr_samplers;
 270    void *saved_samplers[PIPE_MAX_SAMPLERS];
 271    void (*saved_bind_sampler_states)(struct pipe_context *pipe,
 272                                      unsigned num, void **sampler);
 273    unsigned saved_nr_sampler_views;
 274    struct pipe_sampler_view *saved_sampler_views[PIPE_MAX_SAMPLERS];
 275    void (*saved_set_sampler_views)(struct pipe_context *pipe,
 276                                    unsigned num, struct pipe_sampler_view **views);
 277 };
 278
 279 /* A flag for each state_tracker state object:
 280  */
 281 #define I915_NEW_VIEWPORT      0x1
 282 #define I915_NEW_RASTERIZER    0x2
 283 #define I915_NEW_FS            0x4
 284 #define I915_NEW_BLEND         0x8
 285 #define I915_NEW_CLIP          0x10
 286 #define I915_NEW_SCISSOR       0x20
 287 #define I915_NEW_STIPPLE       0x40
 288 #define I915_NEW_FRAMEBUFFER   0x80
 289 #define I915_NEW_ALPHA_TEST    0x100
 290 #define I915_NEW_DEPTH_STENCIL 0x200
 291 #define I915_NEW_SAMPLER       0x400
 292 #define I915_NEW_SAMPLER_VIEW  0x800
 293 #define I915_NEW_VS_CONSTANTS  0x1000
 294 #define I915_NEW_FS_CONSTANTS  0x2000
 295 #define I915_NEW_GS_CONSTANTS  0x4000
 296 #define I915_NEW_VBO           0x8000
 297 #define I915_NEW_VS            0x10000
 298
 299
 300 /* Driver's internally generated state flags:
 301  */
 302 #define I915_NEW_VERTEX_FORMAT    0x10000
 303
 304
 305 /* Dirty flags for hardware emit
 306  */
 307 #define I915_HW_STATIC            (1<<I915_CACHE_STATIC)
 308 #define I915_HW_DYNAMIC           (1<<I915_CACHE_DYNAMIC)
 309 #define I915_HW_SAMPLER           (1<<I915_CACHE_SAMPLER)
 310 #define I915_HW_MAP               (1<<I915_CACHE_MAP)
 311 #define I915_HW_PROGRAM           (1<<I915_CACHE_PROGRAM)
 312 #define I915_HW_CONSTANTS         (1<<I915_CACHE_CONSTANTS)
 313 #define I915_HW_IMMEDIATE         (1<<(I915_MAX_CACHE+0))
 314 #define I915_HW_INVARIANT         (1<<(I915_MAX_CACHE+1))
 315 #define I915_HW_FLUSH             (1<<(I915_MAX_CACHE+1))
 316
 317 /* hw flush handling */
 318 #define I915_FLUSH_CACHE                1
 319 #define I915_PIPELINE_FLUSH             2
 320
 321 /* split up static state */
 322 #define I915_DST_BUF_COLOR              1
 323 #define I915_DST_BUF_DEPTH              2
 324 #define I915_DST_VARS                   4
 325 #define I915_DST_RECT                   8
 326
 327 static INLINE
 328 void i915_set_flush_dirty(struct i915_context *i915, unsigned flush)
 329 {
 330    i915->hardware_dirty |= I915_HW_FLUSH;
 331    i915->flush_dirty |= flush;
 332 }
 333
 334
 335 /***********************************************************************
 336  * i915_prim_emit.c:
 337  */
 338 struct draw_stage *i915_draw_render_stage( struct i915_context *i915 );
 339
 340
 341 /***********************************************************************
 342  * i915_prim_vbuf.c:
 343  */
 344 struct draw_stage *i915_draw_vbuf_stage( struct i915_context *i915 );
 345
 346
 347 /***********************************************************************
 348  * i915_state_emit.c:
 349  */
 350 void i915_emit_hardware_state(struct i915_context *i915 );
 351
 352
 353
 354 /***********************************************************************
 355  * i915_clear.c:
 356  */
 357 void i915_clear_blitter(struct pipe_context *pipe, unsigned buffers, const float *rgba,
 358                         double depth, unsigned stencil);
 359 void i915_clear_render(struct pipe_context *pipe, unsigned buffers, const float *rgba,
 360                        double depth, unsigned stencil);
 361 void i915_clear_emit(struct pipe_context *pipe, unsigned buffers, const float *rgba,
 362                      double depth, unsigned stencil,
 363                      unsigned destx, unsigned desty, unsigned width, unsigned height);
 364
 365
 366 /***********************************************************************
 367  *
 368  */
 369 void i915_init_state_functions( struct i915_context *i915 );
 370 void i915_init_fixup_state_functions( struct i915_context *i915 );
 371 void i915_init_flush_functions( struct i915_context *i915 );
 372 void i915_init_string_functions( struct i915_context *i915 );
 373
 374
 375 /************************************************************************
 376  * i915_context.c
 377  */
 378 struct pipe_context *i915_create_context(struct pipe_screen *screen,
 379                                          void *priv);
 380
 381
 382 /***********************************************************************
 383  * Inline conversion functions.  These are better-typed than the
 384  * macros used previously:
 385  */
 386 static INLINE struct i915_context *
 387 i915_context( struct pipe_context *pipe )
 388 {
 389    return (struct i915_context *)pipe;
 390 }
 391
 392
 393 #endif