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 #include "util/u_math.h"
  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    for (i = 0; i < dwords; i++)
  57       i915->current.dynamic[offset + i] = src[i];
  58
  59    i915->hardware_dirty |= I915_HW_DYNAMIC;
  60 }
  61
  62
  63
  64 /***********************************************************************
  65  * Modes4: stencil masks and logicop
  66  */
  67 static void upload_MODES4(struct i915_context *i915)
  68 {
  69    unsigned modes4 = 0;
  70
  71    /* I915_NEW_STENCIL
  72     */
  73    modes4 |= i915->depth_stencil->stencil_modes4;
  74
  75    /* I915_NEW_BLEND
  76      */
  77    modes4 |= i915->blend->modes4;
  78
  79    /* Always, so that we know when state is in-active:
  80     */
  81    set_dynamic_indirect(i915,
  82                         I915_DYNAMIC_MODES4,
  83                         &modes4,
  84                         1);
  85 }
  86
  87 const struct i915_tracked_state i915_upload_MODES4 = {
  88    "MODES4",
  89    upload_MODES4,
  90    I915_NEW_BLEND | I915_NEW_DEPTH_STENCIL
  91 };
  92
  93
  94
  95 /***********************************************************************
  96  */
  97 static void upload_BFO(struct i915_context *i915)
  98 {
  99    unsigned bfo[2];
 100    bfo[0] = i915->depth_stencil->bfo[0];
 101    bfo[1] = i915->depth_stencil->bfo[1];
 102    /* I don't get it only allowed to set a ref mask when the enable bit is set? */
 103    if (bfo[0] & BFO_ENABLE_STENCIL_REF) {
 104       bfo[0] |= i915->stencil_ref.ref_value[1] << BFO_STENCIL_REF_SHIFT;
 105    }
 106
 107    set_dynamic_indirect(i915,
 108                         I915_DYNAMIC_BFO_0,
 109                         &(bfo[0]),
 110                         2);
 111 }
 112
 113 const struct i915_tracked_state i915_upload_BFO = {
 114    "BFO",
 115    upload_BFO,
 116    I915_NEW_DEPTH_STENCIL
 117 };
 118
 119
 120
 121 /***********************************************************************
 122  */
 123 static void upload_BLENDCOLOR(struct i915_context *i915)
 124 {
 125    unsigned bc[2];
 126
 127    memset(bc, 0, sizeof(bc));
 128
 129    /* I915_NEW_BLEND
 130     */
 131    {
 132       const float *color = i915->blend_color.color;
 133
 134       bc[0] = _3DSTATE_CONST_BLEND_COLOR_CMD;
 135       bc[1] = pack_ui32_float4(color[0],
 136                                color[1],
 137                                color[2],
 138                                color[3]);
 139    }
 140
 141    set_dynamic_indirect(i915,
 142                         I915_DYNAMIC_BC_0,
 143                         bc,
 144                         2);
 145 }
 146
 147 const struct i915_tracked_state i915_upload_BLENDCOLOR = {
 148    "BLENDCOLOR",
 149    upload_BLENDCOLOR,
 150    I915_NEW_BLEND
 151 };
 152
 153
 154
 155 /***********************************************************************
 156  */
 157 static void upload_IAB(struct i915_context *i915)
 158 {
 159    unsigned iab = i915->blend->iab;
 160
 161    set_dynamic_indirect(i915,
 162                         I915_DYNAMIC_IAB,
 163                         &iab,
 164                         1);
 165 }
 166
 167 const struct i915_tracked_state i915_upload_IAB = {
 168    "IAB",
 169    upload_IAB,
 170    I915_NEW_BLEND
 171 };
 172
 173
 174
 175 /***********************************************************************
 176  */
 177 static void upload_DEPTHSCALE(struct i915_context *i915)
 178 {
 179    set_dynamic_indirect(i915,
 180                         I915_DYNAMIC_DEPTHSCALE_0,
 181                         &(i915->rasterizer->ds[0].u),
 182                         2);
 183 }
 184
 185 const struct i915_tracked_state i915_upload_DEPTHSCALE = {
 186    "DEPTHSCALE",
 187    upload_DEPTHSCALE,
 188    I915_NEW_RASTERIZER
 189 };
 190
 191
 192
 193 /***********************************************************************
 194  * Polygon stipple
 195  *
 196  * The i915 supports a 4x4 stipple natively, GL wants 32x32.
 197  * Fortunately stipple is usually a repeating pattern.
 198  *
 199  * XXX: does stipple pattern need to be adjusted according to
 200  * the window position?
 201  *
 202  * XXX: possibly need workaround for conform paths test.
 203  */
 204 static void upload_STIPPLE(struct i915_context *i915)
 205 {
 206    unsigned st[2];
 207
 208    st[0] = _3DSTATE_STIPPLE;
 209    st[1] = 0;
 210
 211    /* I915_NEW_RASTERIZER
 212     */
 213    st[1] |= i915->rasterizer->st;
 214
 215    /* I915_NEW_STIPPLE
 216     */
 217    {
 218       const ubyte *mask = (const ubyte *)i915->poly_stipple.stipple;
 219       ubyte p[4];
 220
 221       p[0] = mask[12] & 0xf;
 222       p[1] = mask[8] & 0xf;
 223       p[2] = mask[4] & 0xf;
 224       p[3] = mask[0] & 0xf;
 225
 226       /* Not sure what to do about fallbacks, so for now just dont:
 227        */
 228       st[1] |= ((p[0] << 0) |
 229                 (p[1] << 4) |
 230                 (p[2] << 8) |
 231                 (p[3] << 12));
 232    }
 233
 234    set_dynamic_indirect(i915,
 235                         I915_DYNAMIC_STP_0,
 236                         &st[0],
 237                         2);
 238 }
 239
 240 const struct i915_tracked_state i915_upload_STIPPLE = {
 241    "STIPPLE",
 242    upload_STIPPLE,
 243    I915_NEW_RASTERIZER | I915_NEW_STIPPLE
 244 };
 245
 246
 247
 248 /***********************************************************************
 249  * Scissor enable
 250  */
 251 static void upload_SCISSOR_ENABLE( struct i915_context *i915 )
 252 {
 253    set_dynamic_indirect(i915,
 254                         I915_DYNAMIC_SC_ENA_0,
 255                         &(i915->rasterizer->sc[0]),
 256                         1);
 257 }
 258
 259 const struct i915_tracked_state i915_upload_SCISSOR_ENABLE = {
 260    "SCISSOR ENABLE",
 261    upload_SCISSOR_ENABLE,
 262    I915_NEW_RASTERIZER
 263 };
 264
 265
 266
 267 /***********************************************************************
 268  * Scissor rect
 269  */
 270 static void upload_SCISSOR_RECT(struct i915_context *i915)
 271 {
 272    unsigned x1 = i915->scissor.minx;
 273    unsigned y1 = i915->scissor.miny;
 274    unsigned x2 = i915->scissor.maxx;
 275    unsigned y2 = i915->scissor.maxy;
 276    unsigned sc[3];
 277
 278    sc[0] = _3DSTATE_SCISSOR_RECT_0_CMD;
 279    sc[1] = (y1 << 16) | (x1 & 0xffff);
 280    sc[2] = (y2 << 16) | (x2 & 0xffff);
 281
 282    set_dynamic_indirect(i915,
 283                         I915_DYNAMIC_SC_RECT_0,
 284                         &sc[0],
 285                         3);
 286 }
 287
 288 const struct i915_tracked_state i915_upload_SCISSOR_RECT = {
 289    "SCISSOR RECT",
 290    upload_SCISSOR_RECT,
 291    I915_NEW_SCISSOR
 292 };
 293
 294
 295
 296 /***********************************************************************
 297  */
 298 static const struct i915_tracked_state *atoms[] = {
 299    &i915_upload_MODES4,
 300    &i915_upload_BFO,
 301    &i915_upload_BLENDCOLOR,
 302    &i915_upload_IAB,
 303    &i915_upload_DEPTHSCALE,
 304    &i915_upload_STIPPLE,
 305    &i915_upload_SCISSOR_ENABLE,
 306    &i915_upload_SCISSOR_RECT
 307 };
 308
 309 /* These will be dynamic indirect state commands, but for now just end
 310  * up on the batch buffer with everything else.
 311  */
 312 static void update_dynamic(struct i915_context *i915)
 313 {
 314    int i;
 315
 316    for (i = 0; i < Elements(atoms); i++)
 317       if (i915->dirty & atoms[i]->dirty)
 318          atoms[i]->update(i915);
 319 }
 320
 321 struct i915_tracked_state i915_hw_dynamic = {
 322    "dynamic",
 323    update_dynamic,
 324    ~0 /* all state atoms, becuase we do internal checking */
 325 };