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
  41 struct i915_winsys;
  42 struct i915_winsys_buffer;
  43 struct i915_winsys_batchbuffer;
  44
  45
  46 #define I915_TEX_UNITS 8
  47
  48 #define I915_DYNAMIC_MODES4       0
  49 #define I915_DYNAMIC_DEPTHSCALE_0 1 /* just the header */
  50 #define I915_DYNAMIC_DEPTHSCALE_1 2
  51 #define I915_DYNAMIC_IAB          3
  52 #define I915_DYNAMIC_BC_0         4 /* just the header */
  53 #define I915_DYNAMIC_BC_1         5
  54 #define I915_DYNAMIC_BFO_0        6
  55 #define I915_DYNAMIC_BFO_1        7
  56 #define I915_DYNAMIC_STP_0        8
  57 #define I915_DYNAMIC_STP_1        9
  58 #define I915_DYNAMIC_SC_ENA_0     10
  59 #define I915_DYNAMIC_SC_RECT_0    11
  60 #define I915_DYNAMIC_SC_RECT_1    12
  61 #define I915_DYNAMIC_SC_RECT_2    13
  62 #define I915_MAX_DYNAMIC          14
  63
  64
  65 #define I915_IMMEDIATE_S0         0
  66 #define I915_IMMEDIATE_S1         1
  67 #define I915_IMMEDIATE_S2         2
  68 #define I915_IMMEDIATE_S3         3
  69 #define I915_IMMEDIATE_S4         4
  70 #define I915_IMMEDIATE_S5         5
  71 #define I915_IMMEDIATE_S6         6
  72 #define I915_IMMEDIATE_S7         7
  73 #define I915_MAX_IMMEDIATE        8
  74
  75 /* These must mach the order of LI0_STATE_* bits, as they will be used
  76  * to generate hardware packets:
  77  */
  78 #define I915_CACHE_STATIC         0
  79 #define I915_CACHE_DYNAMIC        1 /* handled specially */
  80 #define I915_CACHE_SAMPLER        2
  81 #define I915_CACHE_MAP            3
  82 #define I915_CACHE_PROGRAM        4
  83 #define I915_CACHE_CONSTANTS      5
  84 #define I915_MAX_CACHE            6
  85
  86 #define I915_MAX_CONSTANT  32
  87
  88
  89 /** See constant_flags[] below */
  90 #define I915_CONSTFLAG_USER 0x1f
  91
  92
  93 /**
  94  * Subclass of pipe_shader_state
  95  */
  96 struct i915_fragment_shader
  97 {
  98    struct pipe_shader_state state;
  99
 100    struct tgsi_shader_info info;
 101
 102    uint *program;
 103    uint program_len;
 104
 105    /**
 106     * constants introduced during translation.
 107     * These are placed at the end of the constant buffer and grow toward
 108     * the beginning (eg: slot 31, 30 29, ...)
 109     * User-provided constants start at 0.
 110     * This allows both types of constants to co-exist (until there's too many)
 111     * and doesn't require regenerating/changing the fragment program to
 112     * shuffle constants around.
 113     */
 114    uint num_constants;
 115    float constants[I915_MAX_CONSTANT][4];
 116
 117    /**
 118     * Status of each constant
 119     * if I915_CONSTFLAG_PARAM, the value must be taken from the corresponding
 120     * slot of the user's constant buffer. (set by pipe->set_constant_buffer())
 121     * Else, the bitmask indicates which components are occupied by immediates.
 122     */
 123    ubyte constant_flags[I915_MAX_CONSTANT];
 124 };
 125
 126
 127 struct i915_cache_context;
 128
 129 /* Use to calculate differences between state emitted to hardware and
 130  * current driver-calculated state.
 131  */
 132 struct i915_state
 133 {
 134    unsigned immediate[I915_MAX_IMMEDIATE];
 135    unsigned dynamic[I915_MAX_DYNAMIC];
 136
 137    float constants[PIPE_SHADER_TYPES][I915_MAX_CONSTANT][4];
 138    /** number of constants passed in through a constant buffer */
 139    uint num_user_constants[PIPE_SHADER_TYPES];
 140
 141    /* texture sampler state */
 142    unsigned sampler[I915_TEX_UNITS][3];
 143    unsigned sampler_enable_flags;
 144    unsigned sampler_enable_nr;
 145
 146    /* texture image buffers */
 147    unsigned texbuffer[I915_TEX_UNITS][2];
 148
 149    /** Describes the current hardware vertex layout */
 150    struct vertex_info vertex_info;
 151
 152    unsigned id;                 /* track lost context events */
 153 };
 154
 155 struct i915_blend_state {
 156    unsigned iab;
 157    unsigned modes4;
 158    unsigned LIS5;
 159    unsigned LIS6;
 160 };
 161
 162 struct i915_depth_stencil_state {
 163    unsigned stencil_modes4;
 164    unsigned bfo[2];
 165    unsigned stencil_LIS5;
 166    unsigned depth_LIS6;
 167 };
 168
 169 struct i915_rasterizer_state {
 170    unsigned light_twoside : 1;
 171    unsigned st;
 172    enum interp_mode color_interp;
 173
 174    unsigned LIS4;
 175    unsigned LIS7;
 176    unsigned sc[1];
 177
 178    const struct pipe_rasterizer_state *templ;
 179
 180    union { float f; unsigned u; } ds[2];
 181 };
 182
 183 struct i915_sampler_state {
 184    unsigned state[3];
 185    const struct pipe_sampler_state *templ;
 186    unsigned minlod;
 187    unsigned maxlod;
 188 };
 189
 190 struct i915_velems_state {
 191    unsigned count;
 192    struct pipe_vertex_element velem[PIPE_MAX_ATTRIBS];
 193 };
 194
 195
 196 struct i915_context
 197 {
 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    /* XXX unneded */
 217    struct pipe_resource *constants[PIPE_SHADER_TYPES];
 218    struct pipe_framebuffer_state framebuffer;
 219    struct pipe_poly_stipple poly_stipple;
 220    struct pipe_scissor_state scissor;
 221    struct pipe_sampler_view *fragment_sampler_views[PIPE_MAX_SAMPLERS];
 222    struct pipe_viewport_state viewport;
 223    struct pipe_vertex_buffer vertex_buffer[PIPE_MAX_ATTRIBS];
 224    struct pipe_index_buffer index_buffer;
 225
 226    unsigned dirty;
 227
 228    unsigned num_samplers;
 229    unsigned num_fragment_sampler_views;
 230    unsigned num_vertex_buffers;
 231
 232    struct i915_winsys_batchbuffer *batch;
 233
 234    /** Vertex buffer */
 235    struct i915_winsys_buffer *vbo;
 236    size_t vbo_offset;
 237    unsigned vbo_flushed;
 238
 239    struct i915_state current;
 240    unsigned hardware_dirty;
 241 };
 242
 243 /* A flag for each state_tracker state object:
 244  */
 245 #define I915_NEW_VIEWPORT      0x1
 246 #define I915_NEW_RASTERIZER    0x2
 247 #define I915_NEW_FS            0x4
 248 #define I915_NEW_BLEND         0x8
 249 #define I915_NEW_CLIP          0x10
 250 #define I915_NEW_SCISSOR       0x20
 251 #define I915_NEW_STIPPLE       0x40
 252 #define I915_NEW_FRAMEBUFFER   0x80
 253 #define I915_NEW_ALPHA_TEST    0x100
 254 #define I915_NEW_DEPTH_STENCIL 0x200
 255 #define I915_NEW_SAMPLER       0x400
 256 #define I915_NEW_SAMPLER_VIEW  0x800
 257 #define I915_NEW_CONSTANTS     0x1000
 258 #define I915_NEW_VBO           0x2000
 259 #define I915_NEW_VS            0x4000
 260
 261
 262 /* Driver's internally generated state flags:
 263  */
 264 #define I915_NEW_VERTEX_FORMAT    0x10000
 265
 266
 267 /* Dirty flags for hardware emit
 268  */
 269 #define I915_HW_STATIC            (1<<I915_CACHE_STATIC)
 270 #define I915_HW_DYNAMIC           (1<<I915_CACHE_DYNAMIC)
 271 #define I915_HW_SAMPLER           (1<<I915_CACHE_SAMPLER)
 272 #define I915_HW_MAP               (1<<I915_CACHE_MAP)
 273 #define I915_HW_PROGRAM           (1<<I915_CACHE_PROGRAM)
 274 #define I915_HW_CONSTANTS         (1<<I915_CACHE_CONSTANTS)
 275 #define I915_HW_IMMEDIATE         (1<<(I915_MAX_CACHE+0))
 276 #define I915_HW_INVARIENT         (1<<(I915_MAX_CACHE+1))
 277
 278
 279 /***********************************************************************
 280  * i915_prim_emit.c:
 281  */
 282 struct draw_stage *i915_draw_render_stage( struct i915_context *i915 );
 283
 284
 285 /***********************************************************************
 286  * i915_prim_vbuf.c:
 287  */
 288 struct draw_stage *i915_draw_vbuf_stage( struct i915_context *i915 );
 289
 290
 291 /***********************************************************************
 292  * i915_state_emit.c:
 293  */
 294 void i915_emit_hardware_state(struct i915_context *i915 );
 295
 296
 297
 298 /***********************************************************************
 299  * i915_clear.c:
 300  */
 301 void i915_clear( struct pipe_context *pipe, unsigned buffers, const float *rgba,
 302                  double depth, unsigned stencil);
 303
 304
 305 /***********************************************************************
 306  *
 307  */
 308 void i915_init_state_functions( struct i915_context *i915 );
 309 void i915_init_flush_functions( struct i915_context *i915 );
 310 void i915_init_string_functions( struct i915_context *i915 );
 311
 312
 313 /************************************************************************
 314  * i915_context.c
 315  */
 316 struct pipe_context *i915_create_context(struct pipe_screen *screen,
 317                                          void *priv);
 318
 319
 320 /***********************************************************************
 321  * Inline conversion functions.  These are better-typed than the
 322  * macros used previously:
 323  */
 324 static INLINE struct i915_context *
 325 i915_context( struct pipe_context *pipe )
 326 {
 327    return (struct i915_context *)pipe;
 328 }
 329
 330
 331 #endif