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
  42
  43 struct i915_winsys;
  44 struct i915_winsys_buffer;
  45 struct i915_winsys_batchbuffer;
  46
  47
  48 #define I915_TEX_UNITS 8
  49
  50 #define I915_DYNAMIC_MODES4       0
  51 #define I915_DYNAMIC_DEPTHSCALE_0 1 /* just the header */
  52 #define I915_DYNAMIC_DEPTHSCALE_1 2
  53 #define I915_DYNAMIC_IAB          3
  54 #define I915_DYNAMIC_BC_0         4 /* just the header */
  55 #define I915_DYNAMIC_BC_1         5
  56 #define I915_DYNAMIC_BFO_0        6
  57 #define I915_DYNAMIC_BFO_1        7
  58 #define I915_DYNAMIC_STP_0        8
  59 #define I915_DYNAMIC_STP_1        9
  60 #define I915_DYNAMIC_SC_ENA_0     10
  61 #define I915_DYNAMIC_SC_RECT_0    11
  62 #define I915_DYNAMIC_SC_RECT_1    12
  63 #define I915_DYNAMIC_SC_RECT_2    13
  64 #define I915_MAX_DYNAMIC          14
  65
  66
  67 #define I915_IMMEDIATE_S0         0
  68 #define I915_IMMEDIATE_S1         1
  69 #define I915_IMMEDIATE_S2         2
  70 #define I915_IMMEDIATE_S3         3
  71 #define I915_IMMEDIATE_S4         4
  72 #define I915_IMMEDIATE_S5         5
  73 #define I915_IMMEDIATE_S6         6
  74 #define I915_IMMEDIATE_S7         7
  75 #define I915_MAX_IMMEDIATE        8
  76
  77 /* These must mach the order of LI0_STATE_* bits, as they will be used
  78  * to generate hardware packets:
  79  */
  80 #define I915_CACHE_STATIC         0
  81 #define I915_CACHE_DYNAMIC        1 /* handled specially */
  82 #define I915_CACHE_SAMPLER        2
  83 #define I915_CACHE_MAP            3
  84 #define I915_CACHE_PROGRAM        4
  85 #define I915_CACHE_CONSTANTS      5
  86 #define I915_MAX_CACHE            6
  87
  88 #define I915_MAX_CONSTANT  32
  89
  90
  91 /** See constant_flags[] below */
  92 #define I915_CONSTFLAG_USER 0x1f
  93
  94
  95 /**
  96  * Subclass of pipe_shader_state
  97  */
  98 struct i915_fragment_shader
  99 {
 100    struct pipe_shader_state state;
 101
 102    struct tgsi_shader_info info;
 103
 104    uint *program;
 105    uint program_len;
 106
 107    /**
 108     * constants introduced during translation.
 109     * These are placed at the end of the constant buffer and grow toward
 110     * the beginning (eg: slot 31, 30 29, ...)
 111     * User-provided constants start at 0.
 112     * This allows both types of constants to co-exist (until there's too many)
 113     * and doesn't require regenerating/changing the fragment program to
 114     * shuffle constants around.
 115     */
 116    uint num_constants;
 117    float constants[I915_MAX_CONSTANT][4];
 118
 119    /**
 120     * Status of each constant
 121     * if I915_CONSTFLAG_PARAM, the value must be taken from the corresponding
 122     * slot of the user's constant buffer. (set by pipe->set_constant_buffer())
 123     * Else, the bitmask indicates which components are occupied by immediates.
 124     */
 125    ubyte constant_flags[I915_MAX_CONSTANT];
 126 };
 127
 128
 129 struct i915_cache_context;
 130
 131 /* Use to calculate differences between state emitted to hardware and
 132  * current driver-calculated state.
 133  */
 134 struct i915_state
 135 {
 136    unsigned immediate[I915_MAX_IMMEDIATE];
 137    unsigned dynamic[I915_MAX_DYNAMIC];
 138
 139    /** number of constants passed in through a constant buffer */
 140    uint num_user_constants[PIPE_SHADER_TYPES];
 141
 142    /* texture sampler state */
 143    unsigned sampler[I915_TEX_UNITS][3];
 144    unsigned sampler_enable_flags;
 145    unsigned sampler_enable_nr;
 146
 147    /* texture image buffers */
 148    unsigned texbuffer[I915_TEX_UNITS][2];
 149
 150    /** Describes the current hardware vertex layout */
 151    struct vertex_info vertex_info;
 152
 153    unsigned id;                 /* track lost context events */
 154 };
 155
 156 struct i915_blend_state {
 157    unsigned iab;
 158    unsigned modes4;
 159    unsigned LIS5;
 160    unsigned LIS6;
 161 };
 162
 163 struct i915_depth_stencil_state {
 164    unsigned stencil_modes4;
 165    unsigned bfo[2];
 166    unsigned stencil_LIS5;
 167    unsigned depth_LIS6;
 168 };
 169
 170 struct i915_rasterizer_state {
 171    unsigned light_twoside : 1;
 172    unsigned st;
 173    enum interp_mode color_interp;
 174
 175    unsigned LIS4;
 176    unsigned LIS7;
 177    unsigned sc[1];
 178
 179    const struct pipe_rasterizer_state *templ;
 180
 181    union { float f; unsigned u; } ds[2];
 182 };
 183
 184 struct i915_sampler_state {
 185    unsigned state[3];
 186    const struct pipe_sampler_state *templ;
 187    unsigned minlod;
 188    unsigned maxlod;
 189 };
 190
 191 struct i915_velems_state {
 192    unsigned count;
 193    struct pipe_vertex_element velem[PIPE_MAX_ATTRIBS];
 194 };
 195
 196
 197 struct i915_context {
 198    struct pipe_context base;
 199
 200    struct i915_winsys *iws;
 201
 202    struct draw_context *draw;
 203
 204    /* The most recent drawing state as set by the driver:
 205     */
 206    const struct i915_blend_state           *blend;
 207    const struct i915_sampler_state         *sampler[PIPE_MAX_SAMPLERS];
 208    const struct i915_depth_stencil_state   *depth_stencil;
 209    const struct i915_rasterizer_state      *rasterizer;
 210
 211    struct i915_fragment_shader *fs;
 212
 213    struct pipe_blend_color blend_color;
 214    struct pipe_stencil_ref stencil_ref;
 215    struct pipe_clip_state clip;
 216    struct pipe_resource *constants[PIPE_SHADER_TYPES];
 217    struct pipe_framebuffer_state framebuffer;
 218    struct pipe_poly_stipple poly_stipple;
 219    struct pipe_scissor_state scissor;
 220    struct pipe_sampler_view *fragment_sampler_views[PIPE_MAX_SAMPLERS];
 221    struct pipe_viewport_state viewport;
 222    struct pipe_index_buffer index_buffer;
 223
 224    unsigned dirty;
 225
 226    unsigned num_samplers;
 227    unsigned num_fragment_sampler_views;
 228
 229    struct i915_winsys_batchbuffer *batch;
 230
 231    /** Vertex buffer */
 232    struct i915_winsys_buffer *vbo;
 233    size_t vbo_offset;
 234    unsigned vbo_flushed;
 235
 236    struct i915_state current;
 237    unsigned hardware_dirty;
 238
 239    struct util_slab_mempool transfer_pool;
 240 };
 241
 242 /* A flag for each state_tracker state object:
 243  */
 244 #define I915_NEW_VIEWPORT      0x1
 245 #define I915_NEW_RASTERIZER    0x2
 246 #define I915_NEW_FS            0x4
 247 #define I915_NEW_BLEND         0x8
 248 #define I915_NEW_CLIP          0x10
 249 #define I915_NEW_SCISSOR       0x20
 250 #define I915_NEW_STIPPLE       0x40
 251 #define I915_NEW_FRAMEBUFFER   0x80
 252 #define I915_NEW_ALPHA_TEST    0x100
 253 #define I915_NEW_DEPTH_STENCIL 0x200
 254 #define I915_NEW_SAMPLER       0x400
 255 #define I915_NEW_SAMPLER_VIEW  0x800
 256 #define I915_NEW_VS_CONSTANTS  0x1000
 257 #define I915_NEW_FS_CONSTANTS  0x2000
 258 #define I915_NEW_GS_CONSTANTS  0x4000
 259 #define I915_NEW_VBO           0x8000
 260 #define I915_NEW_VS            0x10000
 261
 262
 263 /* Driver's internally generated state flags:
 264  */
 265 #define I915_NEW_VERTEX_FORMAT    0x10000
 266
 267
 268 /* Dirty flags for hardware emit
 269  */
 270 #define I915_HW_STATIC            (1<<I915_CACHE_STATIC)
 271 #define I915_HW_DYNAMIC           (1<<I915_CACHE_DYNAMIC)
 272 #define I915_HW_SAMPLER           (1<<I915_CACHE_SAMPLER)
 273 #define I915_HW_MAP               (1<<I915_CACHE_MAP)
 274 #define I915_HW_PROGRAM           (1<<I915_CACHE_PROGRAM)
 275 #define I915_HW_CONSTANTS         (1<<I915_CACHE_CONSTANTS)
 276 #define I915_HW_IMMEDIATE         (1<<(I915_MAX_CACHE+0))
 277 #define I915_HW_INVARIANT         (1<<(I915_MAX_CACHE+1))
 278
 279
 280 /***********************************************************************
 281  * i915_prim_emit.c:
 282  */
 283 struct draw_stage *i915_draw_render_stage( struct i915_context *i915 );
 284
 285
 286 /***********************************************************************
 287  * i915_prim_vbuf.c:
 288  */
 289 struct draw_stage *i915_draw_vbuf_stage( struct i915_context *i915 );
 290
 291
 292 /***********************************************************************
 293  * i915_state_emit.c:
 294  */
 295 void i915_emit_hardware_state(struct i915_context *i915 );
 296
 297
 298
 299 /***********************************************************************
 300  * i915_clear.c:
 301  */
 302 void i915_clear( struct pipe_context *pipe, unsigned buffers, const float *rgba,
 303                  double depth, unsigned stencil);
 304
 305
 306 /***********************************************************************
 307  *
 308  */
 309 void i915_init_state_functions( struct i915_context *i915 );
 310 void i915_init_flush_functions( struct i915_context *i915 );
 311 void i915_init_string_functions( struct i915_context *i915 );
 312
 313
 314 /************************************************************************
 315  * i915_context.c
 316  */
 317 struct pipe_context *i915_create_context(struct pipe_screen *screen,
 318                                          void *priv);
 319
 320
 321 /***********************************************************************
 322  * Inline conversion functions.  These are better-typed than the
 323  * macros used previously:
 324  */
 325 static INLINE struct i915_context *
 326 i915_context( struct pipe_context *pipe )
 327 {
 328    return (struct i915_context *)pipe;
 329 }
 330
 331
 332 #endif