src/gallium/drivers/i915/i915_state_dynamic.c

   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 #include "i915_batch.h"
  29 #include "i915_state_inlines.h"
  30 #include "i915_context.h"
  31 #include "i915_reg.h"
  32 #include "i915_state.h"
  33
  34 #include "util/u_memory.h"
  35 #include "util/u_pack_color.h"
  36
  37
  38 /* State that we have chosen to store in the DYNAMIC segment of the
  39  * i915 indirect state mechanism.
  40  *
  41  * Can't cache these in the way we do the static state, as there is no
  42  * start/size in the command packet, instead an 'end' value that gets
  43  * incremented.
  44  *
  45  * Additionally, there seems to be a requirement to re-issue the full
  46  * (active) state every time a 4kb boundary is crossed.
  47  */
  48
  49 static INLINE void set_dynamic_indirect(struct i915_context *i915,
  50                                         unsigned offset,
  51                                         const unsigned *src,
  52                                         unsigned dwords)
  53 {
  54    unsigned i;
  55
  56    if (!memcmp(src, &i915->current.dynamic[offset], dwords * 4))
  57       return;
  58
  59    for (i = 0; i < dwords; i++)
  60       i915->current.dynamic[offset + i] = src[i];
  61
  62    i915->hardware_dirty |= I915_HW_DYNAMIC;
  63 }
  64
  65
  66
  67 /***********************************************************************
  68  * Modes4: stencil masks and logicop
  69  */
  70 static void upload_MODES4(struct i915_context *i915)
  71 {
  72    unsigned modes4 = 0;
  73
  74    /* I915_NEW_STENCIL
  75     */
  76    modes4 |= i915->depth_stencil->stencil_modes4;
  77
  78    /* I915_NEW_BLEND
  79      */
  80    modes4 |= i915->blend->modes4;
  81
  82    /* Always, so that we know when state is in-active:
  83     */
  84    set_dynamic_indirect(i915,
  85                         I915_DYNAMIC_MODES4,
  86                         &modes4,
  87                         1);
  88 }
  89
  90 const struct i915_tracked_state i915_upload_MODES4 = {
  91    "MODES4",
  92    upload_MODES4,
  93    I915_NEW_BLEND | I915_NEW_DEPTH_STENCIL
  94 };
  95
  96
  97
  98 /***********************************************************************
  99  */
 100 static void upload_BFO(struct i915_context *i915)
 101 {
 102    unsigned bfo[2];
 103    bfo[0] = i915->depth_stencil->bfo[0];
 104    bfo[1] = i915->depth_stencil->bfo[1];
 105    /* I don't get it only allowed to set a ref mask when the enable bit is set? */
 106    if (bfo[0] & BFO_ENABLE_STENCIL_REF) {
 107       bfo[0] |= i915->stencil_ref.ref_value[1] << BFO_STENCIL_REF_SHIFT;
 108    }
 109
 110    set_dynamic_indirect(i915,
 111                         I915_DYNAMIC_BFO_0,
 112                         &(bfo[0]),
 113                         2);
 114 }
 115
 116 const struct i915_tracked_state i915_upload_BFO = {
 117    "BFO",
 118    upload_BFO,
 119    I915_NEW_DEPTH_STENCIL
 120 };
 121
 122
 123
 124 /***********************************************************************
 125  */
 126 static void upload_BLENDCOLOR(struct i915_context *i915)
 127 {
 128    unsigned bc[2];
 129
 130    memset(bc, 0, sizeof(bc));
 131
 132    /* I915_NEW_BLEND
 133     */
 134    {
 135       const float *color = i915->blend_color.color;
 136
 137       bc[0] = _3DSTATE_CONST_BLEND_COLOR_CMD;
 138       bc[1] = pack_ui32_float4(color[0],
 139                                color[1],
 140                                color[2],
 141                                color[3]);
 142    }
 143
 144    set_dynamic_indirect(i915,
 145                         I915_DYNAMIC_BC_0,
 146                         bc,
 147                         2);
 148 }
 149
 150 const struct i915_tracked_state i915_upload_BLENDCOLOR = {
 151    "BLENDCOLOR",
 152    upload_BLENDCOLOR,
 153    I915_NEW_BLEND
 154 };
 155
 156
 157
 158 /***********************************************************************
 159  */
 160 static void upload_IAB(struct i915_context *i915)
 161 {
 162    unsigned iab = i915->blend->iab;
 163
 164    set_dynamic_indirect(i915,
 165                         I915_DYNAMIC_IAB,
 166                         &iab,
 167                         1);
 168 }
 169
 170 const struct i915_tracked_state i915_upload_IAB = {
 171    "IAB",
 172    upload_IAB,
 173    I915_NEW_BLEND
 174 };
 175
 176
 177
 178 /***********************************************************************
 179  */
 180 static void upload_DEPTHSCALE(struct i915_context *i915)
 181 {
 182    set_dynamic_indirect(i915,
 183                         I915_DYNAMIC_DEPTHSCALE_0,
 184                         &(i915->rasterizer->ds[0].u),
 185                         2);
 186 }
 187
 188 const struct i915_tracked_state i915_upload_DEPTHSCALE = {
 189    "DEPTHSCALE",
 190    upload_DEPTHSCALE,
 191    I915_NEW_RASTERIZER
 192 };
 193
 194
 195
 196 /***********************************************************************
 197  * Polygon stipple
 198  *
 199  * The i915 supports a 4x4 stipple natively, GL wants 32x32.
 200  * Fortunately stipple is usually a repeating pattern.
 201  *
 202  * XXX: does stipple pattern need to be adjusted according to
 203  * the window position?
 204  *
 205  * XXX: possibly need workaround for conform paths test.
 206  */
 207 static void upload_STIPPLE(struct i915_context *i915)
 208 {
 209    unsigned st[2];
 210
 211    st[0] = _3DSTATE_STIPPLE;
 212    st[1] = 0;
 213
 214    /* I915_NEW_RASTERIZER
 215     */
 216    st[1] |= i915->rasterizer->st;
 217
 218    /* I915_NEW_STIPPLE
 219     */
 220    {
 221       const ubyte *mask = (const ubyte *)i915->poly_stipple.stipple;
 222       ubyte p[4];
 223
 224       p[0] = mask[12] & 0xf;
 225       p[1] = mask[8] & 0xf;
 226       p[2] = mask[4] & 0xf;
 227       p[3] = mask[0] & 0xf;
 228
 229       /* Not sure what to do about fallbacks, so for now just dont:
 230        */
 231       st[1] |= ((p[0] << 0) |
 232                 (p[1] << 4) |
 233                 (p[2] << 8) |
 234                 (p[3] << 12));
 235    }
 236
 237    set_dynamic_indirect(i915,
 238                         I915_DYNAMIC_STP_0,
 239                         &st[0],
 240                         2);
 241 }
 242
 243 const struct i915_tracked_state i915_upload_STIPPLE = {
 244    "STIPPLE",
 245    upload_STIPPLE,
 246    I915_NEW_RASTERIZER | I915_NEW_STIPPLE
 247 };
 248
 249
 250
 251 /***********************************************************************
 252  * Scissor enable
 253  */
 254 static void upload_SCISSOR_ENABLE( struct i915_context *i915 )
 255 {
 256    set_dynamic_indirect(i915,
 257                         I915_DYNAMIC_SC_ENA_0,
 258                         &(i915->rasterizer->sc[0]),
 259                         1);
 260 }
 261
 262 const struct i915_tracked_state i915_upload_SCISSOR_ENABLE = {
 263    "SCISSOR ENABLE",
 264    upload_SCISSOR_ENABLE,
 265    I915_NEW_RASTERIZER
 266 };
 267
 268
 269
 270 /***********************************************************************
 271  * Scissor rect
 272  */
 273 static void upload_SCISSOR_RECT(struct i915_context *i915)
 274 {
 275    unsigned x1 = i915->scissor.minx;
 276    unsigned y1 = i915->scissor.miny;
 277    unsigned x2 = i915->scissor.maxx;
 278    unsigned y2 = i915->scissor.maxy;
 279    unsigned sc[3];
 280
 281    sc[0] = _3DSTATE_SCISSOR_RECT_0_CMD;
 282    sc[1] = (y1 << 16) | (x1 & 0xffff);
 283    sc[2] = (y2 << 16) | (x2 & 0xffff);
 284
 285    set_dynamic_indirect(i915,
 286                         I915_DYNAMIC_SC_RECT_0,
 287                         &sc[0],
 288                         3);
 289 }
 290
 291 const struct i915_tracked_state i915_upload_SCISSOR_RECT = {
 292    "SCISSOR RECT",
 293    upload_SCISSOR_RECT,
 294    I915_NEW_SCISSOR
 295 };
 296
 297
 298
 299 /***********************************************************************
 300  */
 301 static const struct i915_tracked_state *atoms[] = {
 302    &i915_upload_MODES4,
 303    &i915_upload_BFO,
 304    &i915_upload_BLENDCOLOR,
 305    &i915_upload_IAB,
 306    &i915_upload_DEPTHSCALE,
 307    &i915_upload_STIPPLE,
 308    &i915_upload_SCISSOR_ENABLE,
 309    &i915_upload_SCISSOR_RECT
 310 };
 311
 312 /* These will be dynamic indirect state commands, but for now just end
 313  * up on the batch buffer with everything else.
 314  */
 315 static void update_dynamic(struct i915_context *i915)
 316 {
 317    int i;
 318
 319    for (i = 0; i < Elements(atoms); i++)
 320       if (i915->dirty & atoms[i]->dirty)
 321          atoms[i]->update(i915);
 322 }
 323
 324 struct i915_tracked_state i915_hw_dynamic = {
 325    "dynamic",
 326    update_dynamic,
 327    ~0 /* all state atoms, becuase we do internal checking */
 328 };