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  * 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    modes4 |= i915->depth_stencil->stencil_modes4;
  73    /* I915_NEW_BLEND */
  74    modes4 |= i915->blend->modes4;
  75
  76    /* Always, so that we know when state is in-active:
  77     */
  78    set_dynamic_indirect( i915,
  79                          I915_DYNAMIC_MODES4,
  80                          &modes4,
  81                          1 );
  82 }
  83
  84 const struct i915_tracked_state i915_upload_MODES4 = {
  85    I915_NEW_BLEND | I915_NEW_DEPTH_STENCIL,
  86    upload_MODES4
  87 };
  88
  89
  90
  91
  92 /***********************************************************************
  93  */
  94
  95 static void upload_BFO( struct i915_context *i915 )
  96 {
  97    unsigned bfo[2];
  98    bfo[0] = i915->depth_stencil->bfo[0];
  99    bfo[1] = i915->depth_stencil->bfo[1];
 100    /* I don't get it only allowed to set a ref mask when the enable bit is set? */
 101    if (bfo[0] & BFO_ENABLE_STENCIL_REF) {
 102       bfo[0] |= i915->stencil_ref.ref_value[1] << BFO_STENCIL_REF_SHIFT;
 103    }
 104    set_dynamic_indirect( i915,
 105                          I915_DYNAMIC_BFO_0,
 106                          &(bfo[0]),
 107                          2 );
 108 }
 109
 110 const struct i915_tracked_state i915_upload_BFO = {
 111    I915_NEW_DEPTH_STENCIL,
 112    upload_BFO
 113 };
 114
 115
 116 /***********************************************************************
 117  */
 118
 119
 120 static void upload_BLENDCOLOR( struct i915_context *i915 )
 121 {
 122    unsigned bc[2];
 123
 124    memset( bc, 0, sizeof(bc) );
 125
 126    /* I915_NEW_BLEND {_COLOR}
 127     */
 128    {
 129       const float *color = i915->blend_color.color;
 130
 131       bc[0] = _3DSTATE_CONST_BLEND_COLOR_CMD;
 132       bc[1] = pack_ui32_float4( color[0],
 133                                 color[1],
 134                                 color[2],
 135                                 color[3] );
 136    }
 137
 138    set_dynamic_indirect( i915,
 139                          I915_DYNAMIC_BC_0,
 140                          bc,
 141                          2 );
 142 }
 143
 144 const struct i915_tracked_state i915_upload_BLENDCOLOR = {
 145    I915_NEW_BLEND,
 146    upload_BLENDCOLOR
 147 };
 148
 149 /***********************************************************************
 150  */
 151
 152
 153 static void upload_IAB( struct i915_context *i915 )
 154 {
 155    unsigned iab = i915->blend->iab;
 156
 157
 158    set_dynamic_indirect( i915,
 159                          I915_DYNAMIC_IAB,
 160                          &iab,
 161                          1 );
 162 }
 163
 164 const struct i915_tracked_state i915_upload_IAB = {
 165    I915_NEW_BLEND,
 166    upload_IAB
 167 };
 168
 169
 170 /***********************************************************************
 171  */
 172
 173
 174
 175 static void upload_DEPTHSCALE( struct i915_context *i915 )
 176 {
 177    set_dynamic_indirect( i915,
 178                          I915_DYNAMIC_DEPTHSCALE_0,
 179                          &(i915->rasterizer->ds[0].u),
 180                          2 );
 181 }
 182
 183 const struct i915_tracked_state i915_upload_DEPTHSCALE = {
 184    I915_NEW_RASTERIZER,
 185    upload_DEPTHSCALE
 186 };
 187
 188
 189
 190 /***********************************************************************
 191  * Polygon stipple
 192  *
 193  * The i915 supports a 4x4 stipple natively, GL wants 32x32.
 194  * Fortunately stipple is usually a repeating pattern.
 195  *
 196  * XXX: does stipple pattern need to be adjusted according to
 197  * the window position?
 198  *
 199  * XXX: possibly need workaround for conform paths test.
 200  */
 201
 202 static void upload_STIPPLE( struct i915_context *i915 )
 203 {
 204    unsigned st[2];
 205
 206    st[0] = _3DSTATE_STIPPLE;
 207    st[1] = 0;
 208
 209    /* I915_NEW_RASTERIZER
 210     */
 211    st[1] |= i915->rasterizer->st;
 212
 213
 214    /* I915_NEW_STIPPLE
 215     */
 216    {
 217       const ubyte *mask = (const ubyte *)i915->poly_stipple.stipple;
 218       ubyte p[4];
 219
 220       p[0] = mask[12] & 0xf;
 221       p[1] = mask[8] & 0xf;
 222       p[2] = mask[4] & 0xf;
 223       p[3] = mask[0] & 0xf;
 224
 225       /* Not sure what to do about fallbacks, so for now just dont:
 226        */
 227       st[1] |= ((p[0] << 0) |
 228                 (p[1] << 4) |
 229                 (p[2] << 8) |
 230                 (p[3] << 12));
 231    }
 232
 233
 234    set_dynamic_indirect( i915,
 235                          I915_DYNAMIC_STP_0,
 236                          &st[0],
 237                          2 );
 238 }
 239
 240
 241 const struct i915_tracked_state i915_upload_STIPPLE = {
 242    I915_NEW_RASTERIZER | I915_NEW_STIPPLE,
 243    upload_STIPPLE
 244 };
 245
 246
 247
 248 /***********************************************************************
 249  * Scissor.
 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    I915_NEW_RASTERIZER,
 261    upload_SCISSOR_ENABLE
 262 };
 263
 264
 265
 266 static void upload_SCISSOR_RECT( struct i915_context *i915 )
 267 {
 268    unsigned x1 = i915->scissor.minx;
 269    unsigned y1 = i915->scissor.miny;
 270    unsigned x2 = i915->scissor.maxx;
 271    unsigned y2 = i915->scissor.maxy;
 272    unsigned sc[3];
 273
 274    sc[0] = _3DSTATE_SCISSOR_RECT_0_CMD;
 275    sc[1] = (y1 << 16) | (x1 & 0xffff);
 276    sc[2] = (y2 << 16) | (x2 & 0xffff);
 277
 278    set_dynamic_indirect( i915,
 279                          I915_DYNAMIC_SC_RECT_0,
 280                          &sc[0],
 281                          3 );
 282 }
 283
 284
 285 const struct i915_tracked_state i915_upload_SCISSOR_RECT = {
 286    I915_NEW_SCISSOR,
 287    upload_SCISSOR_RECT
 288 };
 289
 290
 291
 292
 293
 294
 295 static const struct i915_tracked_state *atoms[] = {
 296    &i915_upload_MODES4,
 297    &i915_upload_BFO,
 298    &i915_upload_BLENDCOLOR,
 299    &i915_upload_IAB,
 300    &i915_upload_DEPTHSCALE,
 301    &i915_upload_STIPPLE,
 302    &i915_upload_SCISSOR_ENABLE,
 303    &i915_upload_SCISSOR_RECT
 304 };
 305
 306 /* These will be dynamic indirect state commands, but for now just end
 307  * up on the batch buffer with everything else.
 308  */
 309 void i915_update_dynamic( struct i915_context *i915 )
 310 {
 311    int i;
 312
 313    for (i = 0; i < Elements(atoms); i++)
 314       if (i915->dirty & atoms[i]->dirty)
 315          atoms[i]->update( i915 );
 316 }
 317