src/mesa/pipe/i915simple/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 "glheader.h"
  29 #include "context.h"
  30 #include "macros.h"
  31 #include "enums.h"
  32
  33 #include "i915_batch.h"
  34 #include "i915_state_inlines.h"
  35 #include "i915_context.h"
  36 #include "i915_reg.h"
  37 #include "i915_state.h"
  38
  39 #define FILE_DEBUG_FLAG DEBUG_STATE
  40
  41 /* State that we have chosen to store in the DYNAMIC segment of the
  42  * i915 indirect state mechanism.
  43  *
  44  * Can't cache these in the way we do the static state, as there is no
  45  * start/size in the command packet, instead an 'end' value that gets
  46  * incremented.
  47  *
  48  * Additionally, there seems to be a requirement to re-issue the full
  49  * (active) state every time a 4kb boundary is crossed.
  50  */
  51
  52 static inline void set_dynamic_indirect( struct i915_context *i915,
  53                                          GLuint offset,
  54                                          const GLuint *src,
  55                                          GLuint dwords )
  56 {
  57    int i;
  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  * Modes4: stencil masks and logicop
  68  */
  69 static void upload_MODES4( struct i915_context *i915 )
  70 {
  71    GLuint modes4 = 0;
  72
  73    /* I915_NEW_STENCIL */
  74    {
  75       GLint testmask = i915->stencil.value_mask[0] & 0xff;
  76       GLint writemask = i915->stencil.write_mask[0] & 0xff;
  77
  78       modes4 |= (_3DSTATE_MODES_4_CMD |
  79                  ENABLE_STENCIL_TEST_MASK |
  80                  STENCIL_TEST_MASK(testmask) |
  81                  ENABLE_STENCIL_WRITE_MASK |
  82                  STENCIL_WRITE_MASK(writemask));
  83    }
  84
  85    /* I915_NEW_BLEND */
  86    {
  87       modes4 |= (_3DSTATE_MODES_4_CMD |
  88                  ENABLE_LOGIC_OP_FUNC |
  89                  LOGIC_OP_FUNC(i915_translate_logic_op(i915->blend.logicop_func)));
  90    }
  91
  92    /* Always, so that we know when state is in-active:
  93     */
  94    set_dynamic_indirect( i915,
  95                          I915_DYNAMIC_MODES4,
  96                          &modes4,
  97                          1 );
  98 }
  99
 100 const struct i915_tracked_state i915_upload_MODES4 = {
 101    .dirty = I915_NEW_BLEND | I915_NEW_STENCIL,
 102    .update = upload_MODES4
 103 };
 104
 105
 106
 107
 108 /***********************************************************************
 109  */
 110
 111 static void upload_BFO( struct i915_context *i915 )
 112 {
 113    GLuint bf[2];
 114
 115    memset( bf, 0, sizeof(bf) );
 116
 117    /* _NEW_STENCIL
 118     */
 119    if (i915->stencil.back_enabled) {
 120       GLint test  = i915_translate_compare_func(i915->stencil.back_func);
 121       GLint fop   = i915_translate_stencil_op(i915->stencil.back_fail_op);
 122       GLint dfop  = i915_translate_stencil_op(i915->stencil.back_zfail_op);
 123       GLint dpop  = i915_translate_stencil_op(i915->stencil.back_zpass_op);
 124       GLint ref   = i915->stencil.ref_value[1] & 0xff;
 125       GLint tmask = i915->stencil.value_mask[1] & 0xff;
 126       GLint wmask = i915->stencil.write_mask[1] & 0xff;
 127
 128       bf[0] = (_3DSTATE_BACKFACE_STENCIL_OPS |
 129                BFO_ENABLE_STENCIL_FUNCS |
 130                BFO_ENABLE_STENCIL_TWO_SIDE |
 131                BFO_ENABLE_STENCIL_REF |
 132                BFO_STENCIL_TWO_SIDE |
 133                (ref  << BFO_STENCIL_REF_SHIFT) |
 134                (test << BFO_STENCIL_TEST_SHIFT) |
 135                (fop  << BFO_STENCIL_FAIL_SHIFT) |
 136                (dfop << BFO_STENCIL_PASS_Z_FAIL_SHIFT) |
 137                (dpop << BFO_STENCIL_PASS_Z_PASS_SHIFT));
 138
 139       bf[1] = (_3DSTATE_BACKFACE_STENCIL_MASKS |
 140                BFM_ENABLE_STENCIL_TEST_MASK |
 141                BFM_ENABLE_STENCIL_WRITE_MASK |
 142                (tmask << BFM_STENCIL_TEST_MASK_SHIFT) |
 143                (wmask << BFM_STENCIL_WRITE_MASK_SHIFT));
 144    }
 145    else {
 146       /* This actually disables two-side stencil: The bit set is a
 147        * modify-enable bit to indicate we are changing the two-side
 148        * setting.  Then there is a symbolic zero to show that we are
 149        * setting the flag to zero/off.
 150        */
 151       bf[0] = (_3DSTATE_BACKFACE_STENCIL_OPS |
 152                BFO_ENABLE_STENCIL_TWO_SIDE |
 153                0);
 154       bf[1] = 0;
 155    }
 156
 157    set_dynamic_indirect( i915,
 158                          I915_DYNAMIC_BFO_0,
 159                          &bf[0],
 160                          2 );
 161 }
 162
 163 const struct i915_tracked_state i915_upload_BFO = {
 164    .dirty = I915_NEW_STENCIL,
 165    .update = upload_BFO
 166 };
 167
 168
 169 /***********************************************************************
 170  */
 171
 172
 173 static void upload_BLENDCOLOR( struct i915_context *i915 )
 174 {
 175    GLuint bc[2];
 176
 177    memset( bc, 0, sizeof(bc) );
 178
 179    /* I915_NEW_BLEND {_COLOR}
 180     */
 181    {
 182       const GLfloat *color = i915->blend_color.color;
 183       GLubyte r, g, b, a;
 184
 185       UNCLAMPED_FLOAT_TO_UBYTE(r, color[RCOMP]);
 186       UNCLAMPED_FLOAT_TO_UBYTE(g, color[GCOMP]);
 187       UNCLAMPED_FLOAT_TO_UBYTE(b, color[BCOMP]);
 188       UNCLAMPED_FLOAT_TO_UBYTE(a, color[ACOMP]);
 189
 190       bc[0] = (_3DSTATE_CONST_BLEND_COLOR_CMD);
 191       bc[1] = (a << 24) | (r << 16) | (g << 8) | b;
 192    }
 193
 194    set_dynamic_indirect( i915,
 195                          I915_DYNAMIC_BC_0,
 196                          bc,
 197                          2 );
 198 }
 199
 200 const struct i915_tracked_state i915_upload_BLENDCOLOR = {
 201    .dirty = I915_NEW_BLEND,
 202    .update = upload_BLENDCOLOR
 203 };
 204
 205 /***********************************************************************
 206  */
 207
 208
 209 static void upload_IAB( struct i915_context *i915 )
 210 {
 211    GLuint iab = 0;
 212
 213    {
 214       GLuint eqRGB  = i915->blend.rgb_func;
 215       GLuint srcRGB = i915->blend.rgb_src_factor;
 216       GLuint dstRGB = i915->blend.rgb_dst_factor;
 217
 218       GLuint eqA    = i915->blend.alpha_func;
 219       GLuint srcA   = i915->blend.alpha_src_factor;
 220       GLuint dstA   = i915->blend.alpha_dst_factor;
 221
 222       if (eqA == GL_MIN || eqA == GL_MAX) {
 223          srcA = dstA = GL_ONE;
 224       }
 225
 226       if (eqRGB == GL_MIN || eqRGB == GL_MAX) {
 227          srcRGB = dstRGB = GL_ONE;
 228       }
 229
 230       if (srcA != srcRGB ||
 231           dstA != dstRGB ||
 232           eqA != eqRGB) {
 233
 234          iab = (_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD |
 235                 IAB_MODIFY_ENABLE |
 236                 IAB_ENABLE |
 237                 IAB_MODIFY_FUNC |
 238                 IAB_MODIFY_SRC_FACTOR |
 239                 IAB_MODIFY_DST_FACTOR |
 240                 SRC_ABLND_FACT(i915_translate_blend_factor(srcA)) |
 241                 DST_ABLND_FACT(i915_translate_blend_factor(dstA)) |
 242                 (i915_translate_blend_func(eqA) << IAB_FUNC_SHIFT));
 243       }
 244       else {
 245          iab = (_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD |
 246                 IAB_MODIFY_ENABLE |
 247                 0);
 248       }
 249    }
 250
 251
 252    set_dynamic_indirect( i915,
 253                          I915_DYNAMIC_IAB,
 254                          &iab,
 255                          1 );
 256 }
 257
 258 const struct i915_tracked_state i915_upload_IAB = {
 259    .dirty = I915_NEW_BLEND,
 260    .update = upload_IAB
 261 };
 262
 263
 264 /***********************************************************************
 265  */
 266
 267
 268
 269 static void upload_DEPTHSCALE( struct i915_context *i915 )
 270 {
 271    union { GLfloat f; GLuint u; } ds[2];
 272
 273    memset( ds, 0, sizeof(ds) );
 274
 275    /* I915_NEW_SETUP
 276     */
 277    ds[0].u = _3DSTATE_DEPTH_OFFSET_SCALE;
 278    ds[1].f = i915->setup.offset_scale;
 279
 280    set_dynamic_indirect( i915,
 281                          I915_DYNAMIC_DEPTHSCALE_0,
 282                          &ds[0].u,
 283                          2 );
 284 }
 285
 286 const struct i915_tracked_state i915_upload_DEPTHSCALE = {
 287    .dirty = I915_NEW_SETUP,
 288    .update = upload_DEPTHSCALE
 289 };
 290
 291
 292
 293 /***********************************************************************
 294  * Polygon stipple
 295  *
 296  * The i915 supports a 4x4 stipple natively, GL wants 32x32.
 297  * Fortunately stipple is usually a repeating pattern.
 298  *
 299  * XXX: does stipple pattern need to be adjusted according to
 300  * the window position?
 301  *
 302  * XXX: possibly need workaround for conform paths test.
 303  */
 304
 305 static void upload_STIPPLE( struct i915_context *i915 )
 306 {
 307    GLuint st[2];
 308
 309    st[0] = _3DSTATE_STIPPLE;
 310    st[1] = 0;
 311
 312    /* I915_NEW_SETUP
 313     */
 314    if (i915->setup.poly_stipple_enable) {
 315       st[1] |= ST1_ENABLE;
 316    }
 317
 318
 319    /* I915_NEW_STIPPLE
 320     */
 321    {
 322       const GLubyte *mask = (const GLubyte *)i915->poly_stipple.stipple;
 323       GLubyte p[4];
 324
 325       p[0] = mask[12] & 0xf;
 326       p[1] = mask[8] & 0xf;
 327       p[2] = mask[4] & 0xf;
 328       p[3] = mask[0] & 0xf;
 329
 330       /* Not sure what to do about fallbacks, so for now just dont:
 331        */
 332       st[1] |= ((p[0] << 0) |
 333                 (p[1] << 4) |
 334                 (p[2] << 8) |
 335                 (p[3] << 12));
 336    }
 337
 338
 339    set_dynamic_indirect( i915,
 340                          I915_DYNAMIC_STP_0,
 341                          &st[0],
 342                          2 );
 343 }
 344
 345
 346 const struct i915_tracked_state i915_upload_STIPPLE = {
 347    .dirty = I915_NEW_SETUP | I915_NEW_STIPPLE,
 348    .update = upload_STIPPLE
 349 };
 350
 351
 352
 353 /***********************************************************************
 354  * Scissor.
 355  */
 356 static void upload_SCISSOR_ENABLE( struct i915_context *i915 )
 357 {
 358    unsigned sc[1];
 359
 360    if (i915->setup.scissor)
 361       sc[0] = _3DSTATE_SCISSOR_ENABLE_CMD | ENABLE_SCISSOR_RECT;
 362    else
 363       sc[0] = _3DSTATE_SCISSOR_ENABLE_CMD | DISABLE_SCISSOR_RECT;
 364
 365    set_dynamic_indirect( i915,
 366                          I915_DYNAMIC_SC_ENA_0,
 367                          &sc[0],
 368                          1 );
 369 }
 370
 371 const struct i915_tracked_state i915_upload_SCISSOR_ENABLE = {
 372    .dirty = I915_NEW_SETUP,
 373    .update = upload_SCISSOR_ENABLE
 374 };
 375
 376
 377
 378 static void upload_SCISSOR_RECT( struct i915_context *i915 )
 379 {
 380    unsigned x1 = i915->scissor.minx;
 381    unsigned y1 = i915->scissor.miny;
 382    unsigned x2 = i915->scissor.maxx;
 383    unsigned y2 = i915->scissor.maxy;
 384    unsigned sc[3];
 385
 386    sc[0] = _3DSTATE_SCISSOR_RECT_0_CMD;
 387    sc[1] = (y1 << 16) | (x1 & 0xffff);
 388    sc[2] = (y2 << 16) | (x2 & 0xffff);
 389
 390    set_dynamic_indirect( i915,
 391                          I915_DYNAMIC_SC_RECT_0,
 392                          &sc[0],
 393                          3 );
 394 }
 395
 396
 397 const struct i915_tracked_state i915_upload_SCISSOR_RECT = {
 398    .dirty = I915_NEW_SCISSOR,
 399    .update = upload_SCISSOR_RECT
 400 };
 401
 402
 403
 404
 405
 406
 407 static const struct i915_tracked_state *atoms[] = {
 408    &i915_upload_MODES4,
 409    &i915_upload_BFO,
 410    &i915_upload_BLENDCOLOR,
 411    &i915_upload_IAB,
 412    &i915_upload_DEPTHSCALE,
 413    &i915_upload_STIPPLE,
 414    &i915_upload_SCISSOR_ENABLE,
 415    &i915_upload_SCISSOR_RECT
 416 };
 417
 418 /* These will be dynamic indirect state commands, but for now just end
 419  * up on the batch buffer with everything else.
 420  */
 421 void i915_update_dynamic( struct i915_context *i915 )
 422 {
 423    int i;
 424
 425    for (i = 0; i < Elements(atoms); i++)
 426       if (i915->dirty & atoms[i]->dirty)
 427          atoms[i]->update( i915 );
 428 }
 429