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     * The mapping between generics and hw texture coords.
 130     * We need to share this between the vertex and fragment stages.
 131     **/
 132    int generic_mapping[I915_TEX_UNITS];
 133 };
 134
 135
 136 struct i915_cache_context;
 137
 138 /* Use to calculate differences between state emitted to hardware and
 139  * current driver-calculated state.
 140  */
 141 struct i915_state
 142 {
 143    unsigned immediate[I915_MAX_IMMEDIATE];
 144    unsigned dynamic[I915_MAX_DYNAMIC];
 145
 146    /** number of constants passed in through a constant buffer */
 147    uint num_user_constants[PIPE_SHADER_TYPES];
 148
 149    /* texture sampler state */
 150    unsigned sampler[I915_TEX_UNITS][3];
 151    unsigned sampler_enable_flags;
 152    unsigned sampler_enable_nr;
 153
 154    /* texture image buffers */
 155    unsigned texbuffer[I915_TEX_UNITS][2];
 156
 157    /** Describes the current hardware vertex layout */
 158    struct vertex_info vertex_info;
 159
 160    /* static state (dst/depth buffer state) */
 161    struct i915_winsys_buffer *cbuf_bo;
 162    unsigned cbuf_flags;
 163    struct i915_winsys_buffer *depth_bo;
 164    unsigned depth_flags;
 165    unsigned dst_buf_vars;
 166    uint32_t draw_offset;
 167    uint32_t draw_size;
 168
 169    unsigned id;                 /* track lost context events */
 170 };
 171
 172 struct i915_blend_state {
 173    unsigned iab;
 174    unsigned modes4;
 175    unsigned LIS5;
 176    unsigned LIS6;
 177 };
 178
 179 struct i915_depth_stencil_state {
 180    unsigned stencil_modes4;
 181    unsigned bfo[2];
 182    unsigned stencil_LIS5;
 183    unsigned depth_LIS6;
 184 };
 185
 186 struct i915_rasterizer_state {
 187    unsigned light_twoside : 1;
 188    unsigned st;
 189    enum interp_mode color_interp;
 190
 191    unsigned LIS4;
 192    unsigned LIS7;
 193    unsigned sc[1];
 194
 195    struct pipe_rasterizer_state templ;
 196
 197    union { float f; unsigned u; } ds[2];
 198 };
 199
 200 struct i915_sampler_state {
 201    unsigned state[3];
 202    const struct pipe_sampler_state *templ;
 203    unsigned minlod;
 204    unsigned maxlod;
 205 };
 206
 207 struct i915_velems_state {
 208    unsigned count;
 209    struct pipe_vertex_element velem[PIPE_MAX_ATTRIBS];
 210 };
 211
 212
 213 struct i915_context {
 214    struct pipe_context base;
 215
 216    struct i915_winsys *iws;
 217
 218    struct draw_context *draw;
 219
 220    /* The most recent drawing state as set by the driver:
 221     */
 222    const struct i915_blend_state           *blend;
 223    const struct i915_sampler_state         *sampler[PIPE_MAX_SAMPLERS];
 224    const struct i915_depth_stencil_state   *depth_stencil;
 225    const struct i915_rasterizer_state      *rasterizer;
 226
 227    struct i915_fragment_shader *fs;
 228
 229    struct pipe_blend_color blend_color;
 230    struct pipe_stencil_ref stencil_ref;
 231    struct pipe_clip_state clip;
 232    struct pipe_resource *constants[PIPE_SHADER_TYPES];
 233    struct pipe_framebuffer_state framebuffer;
 234    struct pipe_poly_stipple poly_stipple;
 235    struct pipe_scissor_state scissor;
 236    struct pipe_sampler_view *fragment_sampler_views[PIPE_MAX_SAMPLERS];
 237    struct pipe_viewport_state viewport;
 238    struct pipe_index_buffer index_buffer;
 239
 240    unsigned dirty;
 241
 242    unsigned num_samplers;
 243    unsigned num_fragment_sampler_views;
 244
 245    struct i915_winsys_batchbuffer *batch;
 246
 247    /** Vertex buffer */
 248    struct i915_winsys_buffer *vbo;
 249    size_t vbo_offset;
 250    unsigned vbo_flushed;
 251
 252    struct i915_state current;
 253    unsigned hardware_dirty;
 254    unsigned immediate_dirty : I915_MAX_IMMEDIATE;
 255    unsigned dynamic_dirty : I915_MAX_DYNAMIC;
 256    unsigned static_dirty : 4;
 257    unsigned flush_dirty : 2;
 258
 259    struct i915_winsys_buffer *validation_buffers[2 + 1 + I915_TEX_UNITS];
 260    int num_validation_buffers;
 261
 262    struct util_slab_mempool transfer_pool;
 263
 264    /** blitter/hw-clear */
 265    struct blitter_context* blitter;
 266
 267    /** State tracking needed by u_blitter for save/restore. */
 268    void *saved_fs;
 269    void (*saved_bind_fs_state)(struct pipe_context *pipe, void *shader);
 270    void *saved_vs;
 271    struct pipe_clip_state saved_clip;
 272    struct i915_velems_state *saved_velems;
 273    unsigned saved_nr_vertex_buffers;
 274    struct pipe_vertex_buffer saved_vertex_buffers[PIPE_MAX_ATTRIBS];
 275    unsigned saved_nr_samplers;
 276    void *saved_samplers[PIPE_MAX_SAMPLERS];
 277    void (*saved_bind_sampler_states)(struct pipe_context *pipe,
 278                                      unsigned num, void **sampler);
 279    unsigned saved_nr_sampler_views;
 280    struct pipe_sampler_view *saved_sampler_views[PIPE_MAX_SAMPLERS];
 281    void (*saved_set_sampler_views)(struct pipe_context *pipe,
 282                                    unsigned num, struct pipe_sampler_view **views);
 283 };
 284
 285 /* A flag for each state_tracker state object:
 286  */
 287 #define I915_NEW_VIEWPORT      0x1
 288 #define I915_NEW_RASTERIZER    0x2
 289 #define I915_NEW_FS            0x4
 290 #define I915_NEW_BLEND         0x8
 291 #define I915_NEW_CLIP          0x10
 292 #define I915_NEW_SCISSOR       0x20
 293 #define I915_NEW_STIPPLE       0x40
 294 #define I915_NEW_FRAMEBUFFER   0x80
 295 #define I915_NEW_ALPHA_TEST    0x100
 296 #define I915_NEW_DEPTH_STENCIL 0x200
 297 #define I915_NEW_SAMPLER       0x400
 298 #define I915_NEW_SAMPLER_VIEW  0x800
 299 #define I915_NEW_VS_CONSTANTS  0x1000
 300 #define I915_NEW_FS_CONSTANTS  0x2000
 301 #define I915_NEW_GS_CONSTANTS  0x4000
 302 #define I915_NEW_VBO           0x8000
 303 #define I915_NEW_VS            0x10000
 304
 305
 306 /* Driver's internally generated state flags:
 307  */
 308 #define I915_NEW_VERTEX_FORMAT    0x10000
 309
 310
 311 /* Dirty flags for hardware emit
 312  */
 313 #define I915_HW_STATIC            (1<<I915_CACHE_STATIC)
 314 #define I915_HW_DYNAMIC           (1<<I915_CACHE_DYNAMIC)
 315 #define I915_HW_SAMPLER           (1<<I915_CACHE_SAMPLER)
 316 #define I915_HW_MAP               (1<<I915_CACHE_MAP)
 317 #define I915_HW_PROGRAM           (1<<I915_CACHE_PROGRAM)
 318 #define I915_HW_CONSTANTS         (1<<I915_CACHE_CONSTANTS)
 319 #define I915_HW_IMMEDIATE         (1<<(I915_MAX_CACHE+0))
 320 #define I915_HW_INVARIANT         (1<<(I915_MAX_CACHE+1))
 321 #define I915_HW_FLUSH             (1<<(I915_MAX_CACHE+1))
 322
 323 /* hw flush handling */
 324 #define I915_FLUSH_CACHE                1
 325 #define I915_PIPELINE_FLUSH             2
 326
 327 /* split up static state */
 328 #define I915_DST_BUF_COLOR              1
 329 #define I915_DST_BUF_DEPTH              2
 330 #define I915_DST_VARS                   4
 331 #define I915_DST_RECT                   8
 332
 333 static INLINE
 334 void i915_set_flush_dirty(struct i915_context *i915, unsigned flush)
 335 {
 336    i915->hardware_dirty |= I915_HW_FLUSH;
 337    i915->flush_dirty |= flush;
 338 }
 339
 340
 341 /***********************************************************************
 342  * i915_prim_emit.c:
 343  */
 344 struct draw_stage *i915_draw_render_stage( struct i915_context *i915 );
 345
 346
 347 /***********************************************************************
 348  * i915_prim_vbuf.c:
 349  */
 350 struct draw_stage *i915_draw_vbuf_stage( struct i915_context *i915 );
 351
 352
 353 /***********************************************************************
 354  * i915_state_emit.c:
 355  */
 356 void i915_emit_hardware_state(struct i915_context *i915 );
 357
 358
 359
 360 /***********************************************************************
 361  * i915_clear.c:
 362  */
 363 void i915_clear_blitter(struct pipe_context *pipe, unsigned buffers, const float *rgba,
 364                         double depth, unsigned stencil);
 365 void i915_clear_render(struct pipe_context *pipe, unsigned buffers, const float *rgba,
 366                        double depth, unsigned stencil);
 367 void i915_clear_emit(struct pipe_context *pipe, unsigned buffers, const float *rgba,
 368                      double depth, unsigned stencil,
 369                      unsigned destx, unsigned desty, unsigned width, unsigned height);
 370
 371
 372 /***********************************************************************
 373  *
 374  */
 375 void i915_init_state_functions( struct i915_context *i915 );
 376 void i915_init_fixup_state_functions( struct i915_context *i915 );
 377 void i915_init_flush_functions( struct i915_context *i915 );
 378 void i915_init_string_functions( struct i915_context *i915 );
 379
 380
 381 /************************************************************************
 382  * i915_context.c
 383  */
 384 struct pipe_context *i915_create_context(struct pipe_screen *screen,
 385                                          void *priv);
 386
 387
 388 /***********************************************************************
 389  * Inline conversion functions.  These are better-typed than the
 390  * macros used previously:
 391  */
 392 static INLINE struct i915_context *
 393 i915_context( struct pipe_context *pipe )
 394 {
 395    return (struct i915_context *)pipe;
 396 }
 397
 398
 399 #endif