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    /* for clears */
 163    uint16_t fb_height, fb_width;
 164
 165    unsigned id;                 /* track lost context events */
 166 };
 167
 168 struct i915_blend_state {
 169    unsigned iab;
 170    unsigned modes4;
 171    unsigned LIS5;
 172    unsigned LIS6;
 173 };
 174
 175 struct i915_depth_stencil_state {
 176    unsigned stencil_modes4;
 177    unsigned bfo[2];
 178    unsigned stencil_LIS5;
 179    unsigned depth_LIS6;
 180 };
 181
 182 struct i915_rasterizer_state {
 183    unsigned light_twoside : 1;
 184    unsigned st;
 185    enum interp_mode color_interp;
 186
 187    unsigned LIS4;
 188    unsigned LIS7;
 189    unsigned sc[1];
 190
 191    struct pipe_rasterizer_state templ;
 192
 193    union { float f; unsigned u; } ds[2];
 194 };
 195
 196 struct i915_sampler_state {
 197    unsigned state[3];
 198    const struct pipe_sampler_state *templ;
 199    unsigned minlod;
 200    unsigned maxlod;
 201 };
 202
 203 struct i915_velems_state {
 204    unsigned count;
 205    struct pipe_vertex_element velem[PIPE_MAX_ATTRIBS];
 206 };
 207
 208
 209 struct i915_context {
 210    struct pipe_context base;
 211
 212    struct i915_winsys *iws;
 213
 214    struct draw_context *draw;
 215
 216    /* The most recent drawing state as set by the driver:
 217     */
 218    const struct i915_blend_state           *blend;
 219    const struct i915_sampler_state         *sampler[PIPE_MAX_SAMPLERS];
 220    const struct i915_depth_stencil_state   *depth_stencil;
 221    const struct i915_rasterizer_state      *rasterizer;
 222
 223    struct i915_fragment_shader *fs;
 224
 225    struct pipe_blend_color blend_color;
 226    struct pipe_stencil_ref stencil_ref;
 227    struct pipe_clip_state clip;
 228    struct pipe_resource *constants[PIPE_SHADER_TYPES];
 229    struct pipe_framebuffer_state framebuffer;
 230    struct pipe_poly_stipple poly_stipple;
 231    struct pipe_scissor_state scissor;
 232    struct pipe_sampler_view *fragment_sampler_views[PIPE_MAX_SAMPLERS];
 233    struct pipe_viewport_state viewport;
 234    struct pipe_index_buffer index_buffer;
 235
 236    unsigned dirty;
 237
 238    unsigned num_samplers;
 239    unsigned num_fragment_sampler_views;
 240
 241    struct i915_winsys_batchbuffer *batch;
 242
 243    /** Vertex buffer */
 244    struct i915_winsys_buffer *vbo;
 245    size_t vbo_offset;
 246    unsigned vbo_flushed;
 247
 248    struct i915_state current;
 249    unsigned hardware_dirty;
 250    unsigned immediate_dirty;
 251    unsigned dynamic_dirty;
 252    unsigned flush_dirty;
 253
 254    struct i915_winsys_buffer *validation_buffers[2 + 1 + I915_TEX_UNITS];
 255    int num_validation_buffers;
 256
 257    struct util_slab_mempool transfer_pool;
 258
 259    /** blitter/hw-clear */
 260    struct blitter_context* blitter;
 261
 262    /** State tracking needed by u_blitter for save/restore. */
 263    void *saved_fs;
 264    void (*saved_bind_fs_state)(struct pipe_context *pipe, void *shader);
 265    void *saved_vs;
 266    struct pipe_clip_state saved_clip;
 267    struct i915_velems_state *saved_velems;
 268    unsigned saved_nr_vertex_buffers;
 269    struct pipe_vertex_buffer saved_vertex_buffers[PIPE_MAX_ATTRIBS];
 270    unsigned saved_nr_samplers;
 271    void *saved_samplers[PIPE_MAX_SAMPLERS];
 272    void (*saved_bind_sampler_states)(struct pipe_context *pipe,
 273                                      unsigned num, void **sampler);
 274    unsigned saved_nr_sampler_views;
 275    struct pipe_sampler_view *saved_sampler_views[PIPE_MAX_SAMPLERS];
 276    void (*saved_set_sampler_views)(struct pipe_context *pipe,
 277                                    unsigned num, struct pipe_sampler_view **views);
 278 };
 279
 280 /* A flag for each state_tracker state object:
 281  */
 282 #define I915_NEW_VIEWPORT      0x1
 283 #define I915_NEW_RASTERIZER    0x2
 284 #define I915_NEW_FS            0x4
 285 #define I915_NEW_BLEND         0x8
 286 #define I915_NEW_CLIP          0x10
 287 #define I915_NEW_SCISSOR       0x20
 288 #define I915_NEW_STIPPLE       0x40
 289 #define I915_NEW_FRAMEBUFFER   0x80
 290 #define I915_NEW_ALPHA_TEST    0x100
 291 #define I915_NEW_DEPTH_STENCIL 0x200
 292 #define I915_NEW_SAMPLER       0x400
 293 #define I915_NEW_SAMPLER_VIEW  0x800
 294 #define I915_NEW_VS_CONSTANTS  0x1000
 295 #define I915_NEW_FS_CONSTANTS  0x2000
 296 #define I915_NEW_GS_CONSTANTS  0x4000
 297 #define I915_NEW_VBO           0x8000
 298 #define I915_NEW_VS            0x10000
 299
 300
 301 /* Driver's internally generated state flags:
 302  */
 303 #define I915_NEW_VERTEX_FORMAT    0x10000
 304
 305
 306 /* Dirty flags for hardware emit
 307  */
 308 #define I915_HW_STATIC            (1<<I915_CACHE_STATIC)
 309 #define I915_HW_DYNAMIC           (1<<I915_CACHE_DYNAMIC)
 310 #define I915_HW_SAMPLER           (1<<I915_CACHE_SAMPLER)
 311 #define I915_HW_MAP               (1<<I915_CACHE_MAP)
 312 #define I915_HW_PROGRAM           (1<<I915_CACHE_PROGRAM)
 313 #define I915_HW_CONSTANTS         (1<<I915_CACHE_CONSTANTS)
 314 #define I915_HW_IMMEDIATE         (1<<(I915_MAX_CACHE+0))
 315 #define I915_HW_INVARIANT         (1<<(I915_MAX_CACHE+1))
 316 #define I915_HW_FLUSH             (1<<(I915_MAX_CACHE+1))
 317
 318 /* hw flush handling */
 319 #define I915_FLUSH_CACHE                1
 320 #define I915_PIPELINE_FLUSH             2
 321
 322 static INLINE
 323 void i915_set_flush_dirty(struct i915_context *i915, unsigned flush)
 324 {
 325    i915->hardware_dirty |= I915_HW_FLUSH;
 326    i915->flush_dirty |= flush;
 327 }
 328
 329
 330 /***********************************************************************
 331  * i915_prim_emit.c:
 332  */
 333 struct draw_stage *i915_draw_render_stage( struct i915_context *i915 );
 334
 335
 336 /***********************************************************************
 337  * i915_prim_vbuf.c:
 338  */
 339 struct draw_stage *i915_draw_vbuf_stage( struct i915_context *i915 );
 340
 341
 342 /***********************************************************************
 343  * i915_state_emit.c:
 344  */
 345 void i915_emit_hardware_state(struct i915_context *i915 );
 346
 347
 348
 349 /***********************************************************************
 350  * i915_clear.c:
 351  */
 352 void i915_clear_blitter(struct pipe_context *pipe, unsigned buffers, const float *rgba,
 353                         double depth, unsigned stencil);
 354 void i915_clear_render(struct pipe_context *pipe, unsigned buffers, const float *rgba,
 355                        double depth, unsigned stencil);
 356 void i915_clear_emit(struct pipe_context *pipe, unsigned buffers, const float *rgba,
 357                      double depth, unsigned stencil,
 358                      unsigned destx, unsigned desty, unsigned width, unsigned height);
 359
 360
 361 /***********************************************************************
 362  *
 363  */
 364 void i915_init_state_functions( struct i915_context *i915 );
 365 void i915_init_fixup_state_functions( struct i915_context *i915 );
 366 void i915_init_flush_functions( struct i915_context *i915 );
 367 void i915_init_string_functions( struct i915_context *i915 );
 368
 369
 370 /************************************************************************
 371  * i915_context.c
 372  */
 373 struct pipe_context *i915_create_context(struct pipe_screen *screen,
 374                                          void *priv);
 375
 376
 377 /***********************************************************************
 378  * Inline conversion functions.  These are better-typed than the
 379  * macros used previously:
 380  */
 381 static INLINE struct i915_context *
 382 i915_context( struct pipe_context *pipe )
 383 {
 384    return (struct i915_context *)pipe;
 385 }
 386
 387
 388 #endif