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