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(struct i915_context *i915,
  50                                unsigned offset,
  51                                const unsigned state)
  52 {
  53    if (i915->current.dynamic[offset] == state)
  54       return;
  55
  56    i915->current.dynamic[offset] = state;
  57    i915->dynamic_dirty |= 1 << offset;
  58    i915->hardware_dirty |= I915_HW_DYNAMIC;
  59 }
  60
  61
  62
  63 static INLINE void set_dynamic_array(struct i915_context *i915,
  64                                      unsigned offset,
  65                                      const unsigned *src,
  66                                      unsigned dwords)
  67 {
  68    unsigned i;
  69
  70    if (!memcmp(src, &i915->current.dynamic[offset], dwords * 4))
  71       return;
  72
  73    for (i = 0; i < dwords; i++) {
  74       i915->current.dynamic[offset + i] = src[i];
  75       i915->dynamic_dirty |= 1 << (offset + i);
  76    }
  77
  78    i915->hardware_dirty |= I915_HW_DYNAMIC;
  79 }
  80
  81
  82
  83 /***********************************************************************
  84  * Modes4: stencil masks and logicop
  85  */
  86 static void upload_MODES4(struct i915_context *i915)
  87 {
  88    unsigned modes4 = 0;
  89
  90    /* I915_NEW_STENCIL
  91     */
  92    modes4 |= i915->depth_stencil->stencil_modes4;
  93
  94    /* I915_NEW_BLEND
  95      */
  96    modes4 |= i915->blend->modes4;
  97
  98    set_dynamic(i915, I915_DYNAMIC_MODES4, modes4);
  99 }
 100
 101 const struct i915_tracked_state i915_upload_MODES4 = {
 102    "MODES4",
 103    upload_MODES4,
 104    I915_NEW_BLEND | I915_NEW_DEPTH_STENCIL
 105 };
 106
 107
 108
 109 /***********************************************************************
 110  */
 111 static void upload_BFO(struct i915_context *i915)
 112 {
 113    unsigned bfo[2];
 114    bfo[0] = i915->depth_stencil->bfo[0];
 115    bfo[1] = i915->depth_stencil->bfo[1];
 116    /* I don't get it only allowed to set a ref mask when the enable bit is set? */
 117    if (bfo[0] & BFO_ENABLE_STENCIL_REF) {
 118       bfo[0] |= i915->stencil_ref.ref_value[1] << BFO_STENCIL_REF_SHIFT;
 119    }
 120
 121    set_dynamic_array(i915, I915_DYNAMIC_BFO_0, bfo, 2);
 122 }
 123
 124 const struct i915_tracked_state i915_upload_BFO = {
 125    "BFO",
 126    upload_BFO,
 127    I915_NEW_DEPTH_STENCIL
 128 };
 129
 130
 131
 132 /***********************************************************************
 133  */
 134 static void upload_BLENDCOLOR(struct i915_context *i915)
 135 {
 136    unsigned bc[2];
 137
 138    memset(bc, 0, sizeof(bc));
 139
 140    /* I915_NEW_BLEND
 141     */
 142    {
 143       const float *color = i915->blend_color.color;
 144
 145       bc[0] = _3DSTATE_CONST_BLEND_COLOR_CMD;
 146       bc[1] = pack_ui32_float4(color[0],
 147                                color[1],
 148                                color[2],
 149                                color[3]);
 150    }
 151
 152    set_dynamic_array(i915, I915_DYNAMIC_BC_0, bc, 2);
 153 }
 154
 155 const struct i915_tracked_state i915_upload_BLENDCOLOR = {
 156    "BLENDCOLOR",
 157    upload_BLENDCOLOR,
 158    I915_NEW_BLEND
 159 };
 160
 161
 162
 163 /***********************************************************************
 164  */
 165 static void upload_IAB(struct i915_context *i915)
 166 {
 167    unsigned iab = i915->blend->iab;
 168
 169    set_dynamic(i915, I915_DYNAMIC_IAB, iab);
 170 }
 171
 172 const struct i915_tracked_state i915_upload_IAB = {
 173    "IAB",
 174    upload_IAB,
 175    I915_NEW_BLEND
 176 };
 177
 178
 179
 180 /***********************************************************************
 181  */
 182 static void upload_DEPTHSCALE(struct i915_context *i915)
 183 {
 184    set_dynamic_array(i915, I915_DYNAMIC_DEPTHSCALE_0,
 185                      &i915->rasterizer->ds[0].u, 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_array(i915, I915_DYNAMIC_STP_0, st, 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(i915, I915_DYNAMIC_SC_ENA_0, i915->rasterizer->sc[0]);
 254 }
 255
 256 const struct i915_tracked_state i915_upload_SCISSOR_ENABLE = {
 257    "SCISSOR ENABLE",
 258    upload_SCISSOR_ENABLE,
 259    I915_NEW_RASTERIZER
 260 };
 261
 262
 263
 264 /***********************************************************************
 265  * Scissor rect
 266  */
 267 static void upload_SCISSOR_RECT(struct i915_context *i915)
 268 {
 269    unsigned x1 = i915->scissor.minx;
 270    unsigned y1 = i915->scissor.miny;
 271    unsigned x2 = i915->scissor.maxx - 1;
 272    unsigned y2 = i915->scissor.maxy - 1;
 273    unsigned sc[3];
 274
 275    sc[0] = _3DSTATE_SCISSOR_RECT_0_CMD;
 276    sc[1] = (y1 << 16) | (x1 & 0xffff);
 277    sc[2] = (y2 << 16) | (x2 & 0xffff);
 278
 279    set_dynamic_array(i915, I915_DYNAMIC_SC_RECT_0, sc, 3);
 280 }
 281
 282 const struct i915_tracked_state i915_upload_SCISSOR_RECT = {
 283    "SCISSOR RECT",
 284    upload_SCISSOR_RECT,
 285    I915_NEW_SCISSOR
 286 };
 287
 288
 289
 290 /***********************************************************************
 291  */
 292 static const struct i915_tracked_state *atoms[] = {
 293    &i915_upload_MODES4,
 294    &i915_upload_BFO,
 295    &i915_upload_BLENDCOLOR,
 296    &i915_upload_IAB,
 297    &i915_upload_DEPTHSCALE,
 298    &i915_upload_STIPPLE,
 299    &i915_upload_SCISSOR_ENABLE,
 300    &i915_upload_SCISSOR_RECT
 301 };
 302
 303 /* These will be dynamic indirect state commands, but for now just end
 304  * up on the batch buffer with everything else.
 305  */
 306 static void update_dynamic(struct i915_context *i915)
 307 {
 308    int i;
 309
 310    for (i = 0; i < Elements(atoms); i++)
 311       if (i915->dirty & atoms[i]->dirty)
 312          atoms[i]->update(i915);
 313 }
 314
 315 struct i915_tracked_state i915_hw_dynamic = {
 316    "dynamic",
 317    update_dynamic,
 318    ~0 /* all state atoms, becuase we do internal checking */
 319 };