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
  39 #define I915_TEX_UNITS 8
  40
  41 #define I915_DYNAMIC_MODES4       0
  42 #define I915_DYNAMIC_DEPTHSCALE_0 1 /* just the header */
  43 #define I915_DYNAMIC_DEPTHSCALE_1 2
  44 #define I915_DYNAMIC_IAB          3
  45 #define I915_DYNAMIC_BC_0         4 /* just the header */
  46 #define I915_DYNAMIC_BC_1         5
  47 #define I915_DYNAMIC_BFO_0        6
  48 #define I915_DYNAMIC_BFO_1        7
  49 #define I915_DYNAMIC_STP_0        8
  50 #define I915_DYNAMIC_STP_1        9
  51 #define I915_DYNAMIC_SC_ENA_0     10
  52 #define I915_DYNAMIC_SC_RECT_0    11
  53 #define I915_DYNAMIC_SC_RECT_1    12
  54 #define I915_DYNAMIC_SC_RECT_2    13
  55 #define I915_MAX_DYNAMIC          14
  56
  57
  58 #define I915_IMMEDIATE_S0         0
  59 #define I915_IMMEDIATE_S1         1
  60 #define I915_IMMEDIATE_S2         2
  61 #define I915_IMMEDIATE_S3         3
  62 #define I915_IMMEDIATE_S4         4
  63 #define I915_IMMEDIATE_S5         5
  64 #define I915_IMMEDIATE_S6         6
  65 #define I915_IMMEDIATE_S7         7
  66 #define I915_MAX_IMMEDIATE        8
  67
  68 /* These must mach the order of LI0_STATE_* bits, as they will be used
  69  * to generate hardware packets:
  70  */
  71 #define I915_CACHE_STATIC         0
  72 #define I915_CACHE_DYNAMIC        1 /* handled specially */
  73 #define I915_CACHE_SAMPLER        2
  74 #define I915_CACHE_MAP            3
  75 #define I915_CACHE_PROGRAM        4
  76 #define I915_CACHE_CONSTANTS      5
  77 #define I915_MAX_CACHE            6
  78
  79 #define I915_MAX_CONSTANT  32
  80
  81
  82 /** See constant_flags[] below */
  83 #define I915_CONSTFLAG_USER 0x1f
  84
  85
  86 /**
  87  * Subclass of pipe_shader_state
  88  */
  89 struct i915_fragment_shader
  90 {
  91    struct pipe_shader_state state;
  92    uint *program;
  93    uint program_len;
  94
  95    /**
  96     * constants introduced during translation.
  97     * These are placed at the end of the constant buffer and grow toward
  98     * the beginning (eg: slot 31, 30 29, ...)
  99     * User-provided constants start at 0.
 100     * This allows both types of constants to co-exist (until there's too many)
 101     * and doesn't require regenerating/changing the fragment program to
 102     * shuffle constants around.
 103     */
 104    uint num_constants;
 105    float constants[I915_MAX_CONSTANT][4];
 106
 107    /**
 108     * Status of each constant
 109     * if I915_CONSTFLAG_PARAM, the value must be taken from the corresponding
 110     * slot of the user's constant buffer. (set by pipe->set_constant_buffer())
 111     * Else, the bitmask indicates which components are occupied by immediates.
 112     */
 113    ubyte constant_flags[I915_MAX_CONSTANT];
 114 };
 115
 116
 117 struct i915_cache_context;
 118
 119 /* Use to calculate differences between state emitted to hardware and
 120  * current driver-calculated state.
 121  */
 122 struct i915_state
 123 {
 124    unsigned immediate[I915_MAX_IMMEDIATE];
 125    unsigned dynamic[I915_MAX_DYNAMIC];
 126
 127    float constants[PIPE_SHADER_TYPES][I915_MAX_CONSTANT][4];
 128    /** number of constants passed in through a constant buffer */
 129    uint num_user_constants[PIPE_SHADER_TYPES];
 130
 131    /* texture sampler state */
 132    unsigned sampler[I915_TEX_UNITS][3];
 133    unsigned sampler_enable_flags;
 134    unsigned sampler_enable_nr;
 135
 136    /* texture image buffers */
 137    unsigned texbuffer[I915_TEX_UNITS][2];
 138
 139    /** Describes the current hardware vertex layout */
 140    struct vertex_info vertex_info;
 141
 142    unsigned id;                 /* track lost context events */
 143 };
 144
 145 struct i915_blend_state {
 146    unsigned iab;
 147    unsigned modes4;
 148    unsigned LIS5;
 149    unsigned LIS6;
 150 };
 151
 152 struct i915_depth_stencil_state {
 153    unsigned stencil_modes4;
 154    unsigned bfo[2];
 155    unsigned stencil_LIS5;
 156    unsigned depth_LIS6;
 157 };
 158
 159 struct i915_rasterizer_state {
 160    int light_twoside : 1;
 161    unsigned st;
 162    enum interp_mode color_interp;
 163
 164    unsigned LIS4;
 165    unsigned LIS7;
 166    unsigned sc[1];
 167
 168    const struct pipe_rasterizer_state *templ;
 169
 170    union { float f; unsigned u; } ds[2];
 171 };
 172
 173 struct i915_sampler_state {
 174    unsigned state[3];
 175    const struct pipe_sampler_state *templ;
 176 };
 177
 178
 179 struct i915_texture {
 180    struct pipe_texture base;
 181
 182    /* Derived from the above:
 183     */
 184    unsigned pitch;
 185    unsigned depth_pitch;          /* per-image on i945? */
 186    unsigned total_height;
 187
 188    unsigned nr_images[PIPE_MAX_TEXTURE_LEVELS];
 189
 190    /* Explicitly store the offset of each image for each cube face or
 191     * depth value.  Pretty much have to accept that hardware formats
 192     * are going to be so diverse that there is no unified way to
 193     * compute the offsets of depth/cube images within a mipmap level,
 194     * so have to store them as a lookup table:
 195     */
 196    unsigned *image_offset[PIPE_MAX_TEXTURE_LEVELS];   /**< array [depth] of offsets */
 197
 198    /* Includes image offset tables:
 199     */
 200    unsigned level_offset[PIPE_MAX_TEXTURE_LEVELS];
 201
 202    /* The data is held here:
 203     */
 204    struct pipe_buffer *buffer;
 205 };
 206
 207 struct i915_context
 208 {
 209    struct pipe_context pipe;
 210    struct i915_winsys *winsys;
 211    struct draw_context *draw;
 212
 213    /* The most recent drawing state as set by the driver:
 214     */
 215    const struct i915_blend_state           *blend;
 216    const struct i915_sampler_state         *sampler[PIPE_MAX_SAMPLERS];
 217    const struct i915_depth_stencil_state   *depth_stencil;
 218    const struct i915_rasterizer_state      *rasterizer;
 219
 220    struct i915_fragment_shader *fs;
 221
 222    struct pipe_blend_color blend_color;
 223    struct pipe_clip_state clip;
 224    struct pipe_constant_buffer constants[PIPE_SHADER_TYPES];
 225    struct pipe_framebuffer_state framebuffer;
 226    struct pipe_poly_stipple poly_stipple;
 227    struct pipe_scissor_state scissor;
 228    struct i915_texture *texture[PIPE_MAX_SAMPLERS];
 229    struct pipe_viewport_state viewport;
 230    struct pipe_vertex_buffer vertex_buffer[PIPE_ATTRIB_MAX];
 231
 232    unsigned dirty;
 233
 234    unsigned *batch_start;
 235
 236    /** Vertex buffer */
 237    struct pipe_buffer *vbo;
 238
 239    struct i915_state current;
 240    unsigned hardware_dirty;
 241
 242    unsigned debug;
 243    unsigned pci_id;
 244
 245    struct {
 246       unsigned is_i945:1;
 247    } flags;
 248 };
 249
 250 /* A flag for each state_tracker state object:
 251  */
 252 #define I915_NEW_VIEWPORT      0x1
 253 #define I915_NEW_RASTERIZER    0x2
 254 #define I915_NEW_FS            0x4
 255 #define I915_NEW_BLEND         0x8
 256 #define I915_NEW_CLIP          0x10
 257 #define I915_NEW_SCISSOR       0x20
 258 #define I915_NEW_STIPPLE       0x40
 259 #define I915_NEW_FRAMEBUFFER   0x80
 260 #define I915_NEW_ALPHA_TEST    0x100
 261 #define I915_NEW_DEPTH_STENCIL 0x200
 262 #define I915_NEW_SAMPLER       0x400
 263 #define I915_NEW_TEXTURE       0x800
 264 #define I915_NEW_CONSTANTS     0x1000
 265 #define I915_NEW_VBO           0x2000
 266
 267
 268 /* Driver's internally generated state flags:
 269  */
 270 #define I915_NEW_VERTEX_FORMAT    0x10000
 271
 272
 273 /* Dirty flags for hardware emit
 274  */
 275 #define I915_HW_STATIC            (1<<I915_CACHE_STATIC)
 276 #define I915_HW_DYNAMIC           (1<<I915_CACHE_DYNAMIC)
 277 #define I915_HW_SAMPLER           (1<<I915_CACHE_SAMPLER)
 278 #define I915_HW_MAP               (1<<I915_CACHE_MAP)
 279 #define I915_HW_PROGRAM           (1<<I915_CACHE_PROGRAM)
 280 #define I915_HW_CONSTANTS         (1<<I915_CACHE_CONSTANTS)
 281 #define I915_HW_IMMEDIATE         (1<<(I915_MAX_CACHE+0))
 282 #define I915_HW_INVARIENT         (1<<(I915_MAX_CACHE+1))
 283
 284
 285 /***********************************************************************
 286  * i915_prim_emit.c:
 287  */
 288 struct draw_stage *i915_draw_render_stage( struct i915_context *i915 );
 289
 290
 291 /***********************************************************************
 292  * i915_prim_vbuf.c:
 293  */
 294 struct draw_stage *i915_draw_vbuf_stage( struct i915_context *i915 );
 295
 296
 297 /***********************************************************************
 298  * i915_state_emit.c:
 299  */
 300 void i915_emit_hardware_state(struct i915_context *i915 );
 301
 302
 303
 304 /***********************************************************************
 305  * i915_clear.c:
 306  */
 307 void i915_clear(struct pipe_context *pipe, struct pipe_surface *ps,
 308                 unsigned clearValue);
 309
 310
 311 /***********************************************************************
 312  * i915_surface.c:
 313  */
 314 void i915_init_surface_functions( struct i915_context *i915 );
 315
 316 void i915_init_state_functions( struct i915_context *i915 );
 317 void i915_init_flush_functions( struct i915_context *i915 );
 318 void i915_init_string_functions( struct i915_context *i915 );
 319
 320
 321
 322 /***********************************************************************
 323  * Inline conversion functions.  These are better-typed than the
 324  * macros used previously:
 325  */
 326 static INLINE struct i915_context *
 327 i915_context( struct pipe_context *pipe )
 328 {
 329    return (struct i915_context *)pipe;
 330 }
 331
 332
 333
 334 #endif