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
  83 struct i915_cache_context;
  84
  85 /* Use to calculate differences between state emitted to hardware and
  86  * current driver-calculated state.
  87  */
  88 struct i915_state
  89 {
  90    unsigned immediate[I915_MAX_IMMEDIATE];
  91    unsigned dynamic[I915_MAX_DYNAMIC];
  92
  93    float constants[PIPE_SHADER_TYPES][I915_MAX_CONSTANT][4];
  94    /** number of constants passed in through a constant buffer */
  95    uint num_user_constants[PIPE_SHADER_TYPES];
  96    /** user constants, plus extra constants from shader translation */
  97    uint num_constants[PIPE_SHADER_TYPES];
  98
  99    uint *program;
 100    uint program_len;
 101
 102    /* texture sampler state */
 103    unsigned sampler[I915_TEX_UNITS][3];
 104    unsigned sampler_enable_flags;
 105    unsigned sampler_enable_nr;
 106
 107    /* texture image buffers */
 108    unsigned texbuffer[I915_TEX_UNITS][2];
 109
 110    /** Describes the current hardware vertex layout */
 111    struct vertex_info vertex_info;
 112
 113    unsigned id;                 /* track lost context events */
 114 };
 115
 116 struct i915_blend_state {
 117    unsigned iab;
 118    unsigned modes4;
 119    unsigned LIS5;
 120    unsigned LIS6;
 121 };
 122
 123 struct i915_depth_stencil_state {
 124    unsigned stencil_modes4;
 125    unsigned bfo[2];
 126    unsigned stencil_LIS5;
 127    unsigned depth_LIS6;
 128 };
 129
 130 struct i915_rasterizer_state {
 131    int light_twoside : 1;
 132    unsigned st;
 133    enum interp_mode color_interp;
 134
 135    unsigned LIS4;
 136    unsigned LIS7;
 137    unsigned sc[1];
 138
 139    const struct pipe_rasterizer_state *templ;
 140
 141    union { float f; unsigned u; } ds[2];
 142 };
 143
 144 struct i915_sampler_state {
 145    unsigned state[3];
 146    const struct pipe_sampler_state *templ;
 147 };
 148
 149
 150 struct i915_texture {
 151    struct pipe_texture base;
 152
 153    /* Derived from the above:
 154     */
 155    unsigned pitch;
 156    unsigned depth_pitch;          /* per-image on i945? */
 157    unsigned total_height;
 158
 159    unsigned nr_images[PIPE_MAX_TEXTURE_LEVELS];
 160
 161    /* Explicitly store the offset of each image for each cube face or
 162     * depth value.  Pretty much have to accept that hardware formats
 163     * are going to be so diverse that there is no unified way to
 164     * compute the offsets of depth/cube images within a mipmap level,
 165     * so have to store them as a lookup table:
 166     */
 167    unsigned *image_offset[PIPE_MAX_TEXTURE_LEVELS];   /**< array [depth] of offsets */
 168
 169    /* Includes image offset tables:
 170     */
 171    unsigned level_offset[PIPE_MAX_TEXTURE_LEVELS];
 172
 173    /* The data is held here:
 174     */
 175    struct pipe_buffer *buffer;
 176 };
 177
 178 struct i915_context
 179 {
 180    struct pipe_context pipe;
 181    struct i915_winsys *winsys;
 182    struct draw_context *draw;
 183
 184    /* The most recent drawing state as set by the driver:
 185     */
 186    const struct i915_blend_state           *blend;
 187    const struct i915_sampler_state         *sampler[PIPE_MAX_SAMPLERS];
 188    const struct i915_depth_stencil_state   *depth_stencil;
 189    const struct i915_rasterizer_state      *rasterizer;
 190    const struct pipe_shader_state *fs;
 191
 192    struct pipe_blend_color blend_color;
 193    struct pipe_clip_state clip;
 194    struct pipe_constant_buffer constants[PIPE_SHADER_TYPES];
 195    struct pipe_framebuffer_state framebuffer;
 196    struct pipe_poly_stipple poly_stipple;
 197    struct pipe_scissor_state scissor;
 198    struct i915_texture *texture[PIPE_MAX_SAMPLERS];
 199    struct pipe_viewport_state viewport;
 200    struct pipe_vertex_buffer vertex_buffer[PIPE_ATTRIB_MAX];
 201
 202    unsigned dirty;
 203
 204    unsigned *batch_start;
 205
 206    /** Vertex buffer */
 207    struct pipe_buffer *vbo;
 208
 209    struct i915_state current;
 210    unsigned hardware_dirty;
 211
 212    unsigned debug;
 213    unsigned pci_id;
 214
 215    struct {
 216       unsigned is_i945:1;
 217    } flags;
 218 };
 219
 220 /* A flag for each state_tracker state object:
 221  */
 222 #define I915_NEW_VIEWPORT      0x1
 223 #define I915_NEW_RASTERIZER    0x2
 224 #define I915_NEW_FS            0x4
 225 #define I915_NEW_BLEND         0x8
 226 #define I915_NEW_CLIP          0x10
 227 #define I915_NEW_SCISSOR       0x20
 228 #define I915_NEW_STIPPLE       0x40
 229 #define I915_NEW_FRAMEBUFFER   0x80
 230 #define I915_NEW_ALPHA_TEST    0x100
 231 #define I915_NEW_DEPTH_STENCIL 0x200
 232 #define I915_NEW_SAMPLER       0x400
 233 #define I915_NEW_TEXTURE       0x800
 234 #define I915_NEW_CONSTANTS     0x1000
 235 #define I915_NEW_VBO           0x2000
 236
 237
 238 /* Driver's internally generated state flags:
 239  */
 240 #define I915_NEW_VERTEX_FORMAT    0x10000
 241
 242
 243 /* Dirty flags for hardware emit
 244  */
 245 #define I915_HW_STATIC            (1<<I915_CACHE_STATIC)
 246 #define I915_HW_DYNAMIC           (1<<I915_CACHE_DYNAMIC)
 247 #define I915_HW_SAMPLER           (1<<I915_CACHE_SAMPLER)
 248 #define I915_HW_MAP               (1<<I915_CACHE_MAP)
 249 #define I915_HW_PROGRAM           (1<<I915_CACHE_PROGRAM)
 250 #define I915_HW_CONSTANTS         (1<<I915_CACHE_CONSTANTS)
 251 #define I915_HW_IMMEDIATE         (1<<(I915_MAX_CACHE+0))
 252 #define I915_HW_INVARIENT         (1<<(I915_MAX_CACHE+1))
 253
 254
 255 /***********************************************************************
 256  * i915_prim_emit.c:
 257  */
 258 struct draw_stage *i915_draw_render_stage( struct i915_context *i915 );
 259
 260
 261 /***********************************************************************
 262  * i915_prim_vbuf.c:
 263  */
 264 struct draw_stage *i915_draw_vbuf_stage( struct i915_context *i915 );
 265
 266
 267 /***********************************************************************
 268  * i915_state_emit.c:
 269  */
 270 void i915_emit_hardware_state(struct i915_context *i915 );
 271
 272
 273
 274 /***********************************************************************
 275  * i915_clear.c:
 276  */
 277 void i915_clear(struct pipe_context *pipe, struct pipe_surface *ps,
 278                 unsigned clearValue);
 279
 280
 281 /***********************************************************************
 282  * i915_surface.c:
 283  */
 284 void i915_init_surface_functions( struct i915_context *i915 );
 285
 286 void i915_init_state_functions( struct i915_context *i915 );
 287 void i915_init_flush_functions( struct i915_context *i915 );
 288 void i915_init_string_functions( struct i915_context *i915 );
 289
 290
 291
 292 /***********************************************************************
 293  * Inline conversion functions.  These are better-typed than the
 294  * macros used previously:
 295  */
 296 static INLINE struct i915_context *
 297 i915_context( struct pipe_context *pipe )
 298 {
 299    return (struct i915_context *)pipe;
 300 }
 301
 302
 303
 304 #endif