src/gallium/drivers/i915simple/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/util/tgsi_scan.h"
  39
  40
  41 #define I915_TEX_UNITS 8
  42
  43 #define I915_DYNAMIC_MODES4       0
  44 #define I915_DYNAMIC_DEPTHSCALE_0 1 /* just the header */
  45 #define I915_DYNAMIC_DEPTHSCALE_1 2
  46 #define I915_DYNAMIC_IAB          3
  47 #define I915_DYNAMIC_BC_0         4 /* just the header */
  48 #define I915_DYNAMIC_BC_1         5
  49 #define I915_DYNAMIC_BFO_0        6
  50 #define I915_DYNAMIC_BFO_1        7
  51 #define I915_DYNAMIC_STP_0        8
  52 #define I915_DYNAMIC_STP_1        9
  53 #define I915_DYNAMIC_SC_ENA_0     10
  54 #define I915_DYNAMIC_SC_RECT_0    11
  55 #define I915_DYNAMIC_SC_RECT_1    12
  56 #define I915_DYNAMIC_SC_RECT_2    13
  57 #define I915_MAX_DYNAMIC          14
  58
  59
  60 #define I915_IMMEDIATE_S0         0
  61 #define I915_IMMEDIATE_S1         1
  62 #define I915_IMMEDIATE_S2         2
  63 #define I915_IMMEDIATE_S3         3
  64 #define I915_IMMEDIATE_S4         4
  65 #define I915_IMMEDIATE_S5         5
  66 #define I915_IMMEDIATE_S6         6
  67 #define I915_IMMEDIATE_S7         7
  68 #define I915_MAX_IMMEDIATE        8
  69
  70 /* These must mach the order of LI0_STATE_* bits, as they will be used
  71  * to generate hardware packets:
  72  */
  73 #define I915_CACHE_STATIC         0
  74 #define I915_CACHE_DYNAMIC        1 /* handled specially */
  75 #define I915_CACHE_SAMPLER        2
  76 #define I915_CACHE_MAP            3
  77 #define I915_CACHE_PROGRAM        4
  78 #define I915_CACHE_CONSTANTS      5
  79 #define I915_MAX_CACHE            6
  80
  81 #define I915_MAX_CONSTANT  32
  82
  83
  84 /** See constant_flags[] below */
  85 #define I915_CONSTFLAG_USER 0x1f
  86
  87
  88 /**
  89  * Subclass of pipe_shader_state
  90  */
  91 struct i915_fragment_shader
  92 {
  93    struct pipe_shader_state state;
  94
  95    struct tgsi_shader_info info;
  96
  97    uint *program;
  98    uint program_len;
  99
 100    /**
 101     * constants introduced during translation.
 102     * These are placed at the end of the constant buffer and grow toward
 103     * the beginning (eg: slot 31, 30 29, ...)
 104     * User-provided constants start at 0.
 105     * This allows both types of constants to co-exist (until there's too many)
 106     * and doesn't require regenerating/changing the fragment program to
 107     * shuffle constants around.
 108     */
 109    uint num_constants;
 110    float constants[I915_MAX_CONSTANT][4];
 111
 112    /**
 113     * Status of each constant
 114     * if I915_CONSTFLAG_PARAM, the value must be taken from the corresponding
 115     * slot of the user's constant buffer. (set by pipe->set_constant_buffer())
 116     * Else, the bitmask indicates which components are occupied by immediates.
 117     */
 118    ubyte constant_flags[I915_MAX_CONSTANT];
 119 };
 120
 121
 122 struct i915_cache_context;
 123
 124 /* Use to calculate differences between state emitted to hardware and
 125  * current driver-calculated state.
 126  */
 127 struct i915_state
 128 {
 129    unsigned immediate[I915_MAX_IMMEDIATE];
 130    unsigned dynamic[I915_MAX_DYNAMIC];
 131
 132    float constants[PIPE_SHADER_TYPES][I915_MAX_CONSTANT][4];
 133    /** number of constants passed in through a constant buffer */
 134    uint num_user_constants[PIPE_SHADER_TYPES];
 135
 136    /* texture sampler state */
 137    unsigned sampler[I915_TEX_UNITS][3];
 138    unsigned sampler_enable_flags;
 139    unsigned sampler_enable_nr;
 140
 141    /* texture image buffers */
 142    unsigned texbuffer[I915_TEX_UNITS][2];
 143
 144    /** Describes the current hardware vertex layout */
 145    struct vertex_info vertex_info;
 146
 147    unsigned id;                 /* track lost context events */
 148 };
 149
 150 struct i915_blend_state {
 151    unsigned iab;
 152    unsigned modes4;
 153    unsigned LIS5;
 154    unsigned LIS6;
 155 };
 156
 157 struct i915_depth_stencil_state {
 158    unsigned stencil_modes4;
 159    unsigned bfo[2];
 160    unsigned stencil_LIS5;
 161    unsigned depth_LIS6;
 162 };
 163
 164 struct i915_rasterizer_state {
 165    int light_twoside : 1;
 166    unsigned st;
 167    enum interp_mode color_interp;
 168
 169    unsigned LIS4;
 170    unsigned LIS7;
 171    unsigned sc[1];
 172
 173    const struct pipe_rasterizer_state *templ;
 174
 175    union { float f; unsigned u; } ds[2];
 176 };
 177
 178 struct i915_sampler_state {
 179    unsigned state[3];
 180    const struct pipe_sampler_state *templ;
 181 };
 182
 183
 184 struct i915_texture {
 185    struct pipe_texture base;
 186
 187    /* Derived from the above:
 188     */
 189    unsigned pitch;
 190    unsigned depth_pitch;          /* per-image on i945? */
 191    unsigned total_height;
 192
 193    unsigned nr_images[PIPE_MAX_TEXTURE_LEVELS];
 194
 195    /* Explicitly store the offset of each image for each cube face or
 196     * depth value.  Pretty much have to accept that hardware formats
 197     * are going to be so diverse that there is no unified way to
 198     * compute the offsets of depth/cube images within a mipmap level,
 199     * so have to store them as a lookup table:
 200     */
 201    unsigned *image_offset[PIPE_MAX_TEXTURE_LEVELS];   /**< array [depth] of offsets */
 202
 203    /* Includes image offset tables:
 204     */
 205    unsigned level_offset[PIPE_MAX_TEXTURE_LEVELS];
 206
 207    /* The data is held here:
 208     */
 209    struct pipe_buffer *buffer;
 210 };
 211
 212 struct i915_context
 213 {
 214    struct pipe_context pipe;
 215    struct i915_winsys *winsys;
 216    struct draw_context *draw;
 217
 218    /* The most recent drawing state as set by the driver:
 219     */
 220    const struct i915_blend_state           *blend;
 221    const struct i915_sampler_state         *sampler[PIPE_MAX_SAMPLERS];
 222    const struct i915_depth_stencil_state   *depth_stencil;
 223    const struct i915_rasterizer_state      *rasterizer;
 224
 225    struct i915_fragment_shader *fs;
 226
 227    struct pipe_blend_color blend_color;
 228    struct pipe_clip_state clip;
 229    struct pipe_constant_buffer constants[PIPE_SHADER_TYPES];
 230    struct pipe_framebuffer_state framebuffer;
 231    struct pipe_poly_stipple poly_stipple;
 232    struct pipe_scissor_state scissor;
 233    struct i915_texture *texture[PIPE_MAX_SAMPLERS];
 234    struct pipe_viewport_state viewport;
 235    struct pipe_vertex_buffer vertex_buffer[PIPE_MAX_ATTRIBS];
 236
 237    unsigned dirty;
 238
 239    unsigned num_samplers;
 240    unsigned num_textures;
 241    unsigned num_vertex_elements;
 242    unsigned num_vertex_buffers;
 243
 244    unsigned *batch_start;
 245
 246    /** Vertex buffer */
 247    struct pipe_buffer *vbo;
 248    size_t vbo_offset;
 249    unsigned vbo_flushed;
 250
 251    struct i915_state current;
 252    unsigned hardware_dirty;
 253
 254    unsigned debug;
 255 };
 256
 257 /* A flag for each state_tracker state object:
 258  */
 259 #define I915_NEW_VIEWPORT      0x1
 260 #define I915_NEW_RASTERIZER    0x2
 261 #define I915_NEW_FS            0x4
 262 #define I915_NEW_BLEND         0x8
 263 #define I915_NEW_CLIP          0x10
 264 #define I915_NEW_SCISSOR       0x20
 265 #define I915_NEW_STIPPLE       0x40
 266 #define I915_NEW_FRAMEBUFFER   0x80
 267 #define I915_NEW_ALPHA_TEST    0x100
 268 #define I915_NEW_DEPTH_STENCIL 0x200
 269 #define I915_NEW_SAMPLER       0x400
 270 #define I915_NEW_TEXTURE       0x800
 271 #define I915_NEW_CONSTANTS     0x1000
 272 #define I915_NEW_VBO           0x2000
 273 #define I915_NEW_VS            0x4000
 274
 275
 276 /* Driver's internally generated state flags:
 277  */
 278 #define I915_NEW_VERTEX_FORMAT    0x10000
 279
 280
 281 /* Dirty flags for hardware emit
 282  */
 283 #define I915_HW_STATIC            (1<<I915_CACHE_STATIC)
 284 #define I915_HW_DYNAMIC           (1<<I915_CACHE_DYNAMIC)
 285 #define I915_HW_SAMPLER           (1<<I915_CACHE_SAMPLER)
 286 #define I915_HW_MAP               (1<<I915_CACHE_MAP)
 287 #define I915_HW_PROGRAM           (1<<I915_CACHE_PROGRAM)
 288 #define I915_HW_CONSTANTS         (1<<I915_CACHE_CONSTANTS)
 289 #define I915_HW_IMMEDIATE         (1<<(I915_MAX_CACHE+0))
 290 #define I915_HW_INVARIENT         (1<<(I915_MAX_CACHE+1))
 291
 292
 293 /***********************************************************************
 294  * i915_prim_emit.c:
 295  */
 296 struct draw_stage *i915_draw_render_stage( struct i915_context *i915 );
 297
 298
 299 /***********************************************************************
 300  * i915_prim_vbuf.c:
 301  */
 302 struct draw_stage *i915_draw_vbuf_stage( struct i915_context *i915 );
 303
 304
 305 /***********************************************************************
 306  * i915_state_emit.c:
 307  */
 308 void i915_emit_hardware_state(struct i915_context *i915 );
 309
 310
 311
 312 /***********************************************************************
 313  * i915_clear.c:
 314  */
 315 void i915_clear(struct pipe_context *pipe, struct pipe_surface *ps,
 316                 unsigned clearValue);
 317
 318
 319 /***********************************************************************
 320  * i915_surface.c:
 321  */
 322 void i915_init_surface_functions( struct i915_context *i915 );
 323
 324 void i915_init_state_functions( struct i915_context *i915 );
 325 void i915_init_flush_functions( struct i915_context *i915 );
 326 void i915_init_string_functions( struct i915_context *i915 );
 327
 328
 329
 330
 331 /***********************************************************************
 332  * Inline conversion functions.  These are better-typed than the
 333  * macros used previously:
 334  */
 335 static INLINE struct i915_context *
 336 i915_context( struct pipe_context *pipe )
 337 {
 338    return (struct i915_context *)pipe;
 339 }
 340
 341
 342
 343 #endif