src/mesa/drivers/dri/i965/intel_blit.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
  29 #include <stdio.h>
  30 #include <errno.h>
  31
  32 #include "mtypes.h"
  33 #include "context.h"
  34 #include "enums.h"
  35 #include "vblank.h"
  36
  37 #include "intel_reg.h"
  38 #include "intel_batchbuffer.h"
  39 #include "intel_context.h"
  40 #include "intel_blit.h"
  41 #include "intel_regions.h"
  42
  43 #include "bufmgr.h"
  44
  45
  46
  47
  48 /*
  49  * Copy the back buffer to the front buffer.
  50  */
  51 void intelCopyBuffer( const __DRIdrawablePrivate *dPriv,
  52                       const drm_clip_rect_t *rect )
  53 {
  54    struct intel_context *intel;
  55    GLboolean   missed_target;
  56    int64_t ust;
  57
  58    DBG("%s\n", __FUNCTION__);
  59
  60    assert(dPriv);
  61    assert(dPriv->driContextPriv);
  62    assert(dPriv->driContextPriv->driverPrivate);
  63
  64    intel = (struct intel_context *) dPriv->driContextPriv->driverPrivate;
  65    intelFlush( &intel->ctx );
  66
  67
  68    bmFinishFence(intel, intel->last_swap_fence);
  69
  70    /* The LOCK_HARDWARE is required for the cliprects.  Buffer offsets
  71     * should work regardless.
  72     */
  73    LOCK_HARDWARE( intel );
  74
  75    if (!rect)
  76    {
  77       /* This is a really crappy way to do wait-for-vblank.  I guess
  78        * it sortof works in the single-application case.
  79        */
  80        UNLOCK_HARDWARE( intel );
  81        driWaitForVBlank( dPriv, &intel->vbl_seq, intel->vblank_flags, & missed_target );
  82        LOCK_HARDWARE( intel );
  83    }
  84
  85    {
  86       intelScreenPrivate *intelScreen = intel->intelScreen;
  87       __DRIdrawablePrivate *dPriv = intel->driDrawable;
  88       int nbox = dPriv->numClipRects;
  89       drm_clip_rect_t *pbox = dPriv->pClipRects;
  90       int cpp = intelScreen->cpp;
  91       struct intel_region *src, *dst;
  92       int BR13, CMD;
  93       int i;
  94       int src_pitch, dst_pitch;
  95
  96       if (intel->sarea->pf_current_page == 0) {
  97          dst = intel->front_region;
  98          src = intel->back_region;
  99       }
 100       else {
 101          assert(0);
 102          src = intel->front_region;
 103          dst = intel->back_region;
 104       }
 105
 106       src_pitch = src->pitch * src->cpp;
 107       dst_pitch = dst->pitch * dst->cpp;
 108
 109       if (cpp == 2) {
 110          BR13 = (0xCC << 16) | (1<<24);
 111          CMD = XY_SRC_COPY_BLT_CMD;
 112       }
 113       else {
 114          BR13 = (0xCC << 16) | (1<<24) | (1<<25);
 115          CMD = (XY_SRC_COPY_BLT_CMD | XY_SRC_COPY_BLT_WRITE_ALPHA |
 116                 XY_SRC_COPY_BLT_WRITE_RGB);
 117       }
 118
 119       if (src->tiled) {
 120          CMD |= XY_SRC_TILED;
 121          src_pitch /= 4;
 122       }
 123
 124       if (dst->tiled) {
 125          CMD |= XY_DST_TILED;
 126          dst_pitch /= 4;
 127       }
 128
 129       for (i = 0 ; i < nbox; i++, pbox++)
 130       {
 131          drm_clip_rect_t tmp = *pbox;
 132
 133          if (rect) {
 134             if (!intel_intersect_cliprects(&tmp, &tmp, rect))
 135                continue;
 136          }
 137
 138
 139          if (tmp.x1 > tmp.x2 ||
 140              tmp.y1 > tmp.y2 ||
 141              tmp.x2 > intelScreen->width ||
 142              tmp.y2 > intelScreen->height)
 143             continue;
 144
 145          BEGIN_BATCH(8, INTEL_BATCH_NO_CLIPRECTS);
 146          OUT_BATCH( CMD );
 147          OUT_BATCH( dst_pitch | BR13 );
 148          OUT_BATCH( (tmp.y1 << 16) | tmp.x1 );
 149          OUT_BATCH( (tmp.y2 << 16) | tmp.x2 );
 150          OUT_BATCH( bmBufferOffset(intel, dst->buffer) );
 151          OUT_BATCH( (tmp.y1 << 16) | tmp.x1 );
 152          OUT_BATCH( src_pitch );
 153          OUT_BATCH( bmBufferOffset(intel, src->buffer) );
 154          ADVANCE_BATCH();
 155       }
 156    }
 157
 158    intel_batchbuffer_flush( intel->batch );
 159    intel->second_last_swap_fence = intel->last_swap_fence;
 160    intel->last_swap_fence = bmSetFence( intel );
 161    UNLOCK_HARDWARE( intel );
 162
 163    if (!rect)
 164    {
 165        intel->swap_count++;
 166        (*dri_interface->getUST)(&ust);
 167        if (missed_target) {
 168            intel->swap_missed_count++;
 169            intel->swap_missed_ust = ust -  intel->swap_ust;
 170        }
 171
 172        intel->swap_ust = ust;
 173    }
 174
 175 }
 176
 177
 178
 179
 180 void intelEmitFillBlit( struct intel_context *intel,
 181                         GLuint cpp,
 182                         GLshort dst_pitch,
 183                         struct buffer *dst_buffer,
 184                         GLuint dst_offset,
 185                         GLboolean dst_tiled,
 186                         GLshort x, GLshort y,
 187                         GLshort w, GLshort h,
 188                         GLuint color )
 189 {
 190    GLuint BR13, CMD;
 191    BATCH_LOCALS;
 192
 193    dst_pitch *= cpp;
 194
 195    switch(cpp) {
 196    case 1:
 197    case 2:
 198    case 3:
 199       BR13 = (0xF0 << 16) | (1<<24);
 200       CMD = XY_COLOR_BLT_CMD;
 201       break;
 202    case 4:
 203       BR13 = (0xF0 << 16) | (1<<24) | (1<<25);
 204       CMD = (XY_COLOR_BLT_CMD | XY_COLOR_BLT_WRITE_ALPHA |
 205              XY_COLOR_BLT_WRITE_RGB);
 206       break;
 207    default:
 208       return;
 209    }
 210
 211    if (dst_tiled) {
 212       CMD |= XY_DST_TILED;
 213       dst_pitch /= 4;
 214    }
 215
 216    BEGIN_BATCH(6, INTEL_BATCH_NO_CLIPRECTS);
 217    OUT_BATCH( CMD );
 218    OUT_BATCH( dst_pitch | BR13 );
 219    OUT_BATCH( (y << 16) | x );
 220    OUT_BATCH( ((y+h) << 16) | (x+w) );
 221    OUT_BATCH( bmBufferOffset(intel, dst_buffer) + dst_offset );
 222    OUT_BATCH( color );
 223    ADVANCE_BATCH();
 224 }
 225
 226
 227 /* Copy BitBlt
 228  */
 229 void intelEmitCopyBlit( struct intel_context *intel,
 230                         GLuint cpp,
 231                         GLshort src_pitch,
 232                         struct buffer *src_buffer,
 233                         GLuint  src_offset,
 234                         GLboolean src_tiled,
 235                         GLshort dst_pitch,
 236                         struct buffer *dst_buffer,
 237                         GLuint  dst_offset,
 238                         GLboolean dst_tiled,
 239                         GLshort src_x, GLshort src_y,
 240                         GLshort dst_x, GLshort dst_y,
 241                         GLshort w, GLshort h )
 242 {
 243    GLuint CMD, BR13;
 244    int dst_y2 = dst_y + h;
 245    int dst_x2 = dst_x + w;
 246    BATCH_LOCALS;
 247
 248
 249    DBG("%s src:buf(%d)/%d %d,%d dst:buf(%d)/%d %d,%d sz:%dx%d\n",
 250        __FUNCTION__,
 251        src_buffer, src_pitch, src_x, src_y,
 252        dst_buffer, dst_pitch, dst_x, dst_y,
 253        w,h);
 254
 255    src_pitch *= cpp;
 256    dst_pitch *= cpp;
 257
 258    switch(cpp) {
 259    case 1:
 260    case 2:
 261    case 3:
 262       BR13 = (0xCC << 16) | (1<<24);
 263       CMD = XY_SRC_COPY_BLT_CMD;
 264       break;
 265    case 4:
 266       BR13 = (0xCC << 16) | (1<<24) | (1<<25);
 267       CMD = (XY_SRC_COPY_BLT_CMD | XY_SRC_COPY_BLT_WRITE_ALPHA |
 268              XY_SRC_COPY_BLT_WRITE_RGB);
 269       break;
 270    default:
 271       return;
 272    }
 273
 274    if (src_tiled) {
 275       CMD |= XY_SRC_TILED;
 276       src_pitch /= 4;
 277    }
 278
 279    if (dst_tiled) {
 280       CMD |= XY_DST_TILED;
 281       dst_pitch /= 4;
 282    }
 283
 284    if (dst_y2 < dst_y ||
 285        dst_x2 < dst_x) {
 286       return;
 287    }
 288
 289    dst_pitch &= 0xffff;
 290    src_pitch &= 0xffff;
 291
 292    /* Initial y values don't seem to work with negative pitches.  If
 293     * we adjust the offsets manually (below), it seems to work fine.
 294     */
 295    if (0) {
 296       BEGIN_BATCH(8, INTEL_BATCH_NO_CLIPRECTS);
 297       OUT_BATCH( CMD );
 298       OUT_BATCH( dst_pitch | BR13 );
 299       OUT_BATCH( (dst_y << 16) | dst_x );
 300       OUT_BATCH( (dst_y2 << 16) | dst_x2 );
 301       OUT_BATCH( bmBufferOffset(intel, dst_buffer) + dst_offset );
 302       OUT_BATCH( (src_y << 16) | src_x );
 303       OUT_BATCH( src_pitch );
 304       OUT_BATCH( bmBufferOffset(intel, src_buffer) + src_offset );
 305       ADVANCE_BATCH();
 306    }
 307    else {
 308       BEGIN_BATCH(8, INTEL_BATCH_NO_CLIPRECTS);
 309       OUT_BATCH( CMD );
 310       OUT_BATCH( (dst_pitch & 0xffff) | BR13 );
 311       OUT_BATCH( (0 << 16) | dst_x );
 312       OUT_BATCH( (h << 16) | dst_x2 );
 313       OUT_BATCH( bmBufferOffset(intel, dst_buffer) + dst_offset + dst_y * dst_pitch );
 314       OUT_BATCH( (0 << 16) | src_x );
 315       OUT_BATCH( (src_pitch & 0xffff) );
 316       OUT_BATCH( bmBufferOffset(intel, src_buffer) + src_offset + src_y * src_pitch );
 317       ADVANCE_BATCH();
 318    }
 319 }
 320
 321
 322
 323 void intelClearWithBlit(GLcontext *ctx, GLbitfield flags, GLboolean all,
 324                       GLint cx1, GLint cy1, GLint cw, GLint ch)
 325 {
 326    struct intel_context *intel = intel_context( ctx );
 327    intelScreenPrivate *intelScreen = intel->intelScreen;
 328    GLuint clear_depth, clear_color;
 329    GLint cx, cy;
 330    GLint cpp = intelScreen->cpp;
 331    GLint i;
 332    struct intel_region *front = intel->front_region;
 333    struct intel_region *back = intel->back_region;
 334    struct intel_region *depth = intel->depth_region;
 335    GLuint BR13, FRONT_CMD, BACK_CMD, DEPTH_CMD;
 336    GLuint front_pitch;
 337    GLuint back_pitch;
 338    GLuint depth_pitch;
 339    BATCH_LOCALS;
 340
 341
 342    clear_color = intel->ClearColor;
 343    clear_depth = 0;
 344
 345    if (flags & BUFFER_BIT_DEPTH) {
 346       clear_depth = (GLuint)(ctx->Depth.Clear * intel->ClearDepth);
 347    }
 348
 349    if (flags & BUFFER_BIT_STENCIL) {
 350       clear_depth |= (ctx->Stencil.Clear & 0xff) << 24;
 351    }
 352
 353    switch(cpp) {
 354    case 2:
 355       BR13 = (0xF0 << 16) | (1<<24);
 356       BACK_CMD  = FRONT_CMD = XY_COLOR_BLT_CMD;
 357       DEPTH_CMD = XY_COLOR_BLT_CMD;
 358       break;
 359    case 4:
 360       BR13 = (0xF0 << 16) | (1<<24) | (1<<25);
 361       BACK_CMD = FRONT_CMD = (XY_COLOR_BLT_CMD |
 362                               XY_COLOR_BLT_WRITE_ALPHA |
 363                               XY_COLOR_BLT_WRITE_RGB);
 364       DEPTH_CMD = XY_COLOR_BLT_CMD;
 365       if (flags & BUFFER_BIT_DEPTH) DEPTH_CMD |= XY_COLOR_BLT_WRITE_RGB;
 366       if (flags & BUFFER_BIT_STENCIL) DEPTH_CMD |= XY_COLOR_BLT_WRITE_ALPHA;
 367       break;
 368    default:
 369       return;
 370    }
 371
 372
 373
 374    intelFlush( &intel->ctx );
 375    LOCK_HARDWARE( intel );
 376    {
 377       /* Refresh the cx/y/w/h values as they may have been invalidated
 378        * by a new window position or size picked up when we did
 379        * LOCK_HARDWARE above.  The values passed by mesa are not
 380        * reliable.
 381        */
 382       {
 383           cx = ctx->DrawBuffer->_Xmin;
 384           cy = ctx->DrawBuffer->_Ymin;
 385           ch = ctx->DrawBuffer->_Ymax - ctx->DrawBuffer->_Ymin;
 386           cw  = ctx->DrawBuffer->_Xmax - ctx->DrawBuffer->_Xmin;
 387       }
 388
 389       /* flip top to bottom */
 390       cy = intel->driDrawable->h-cy1-ch;
 391       cx = cx1 + intel->drawX;
 392       cy += intel->drawY;
 393
 394       /* adjust for page flipping */
 395       if ( intel->sarea->pf_current_page == 0 ) {
 396          front = intel->front_region;
 397          back = intel->back_region;
 398       }
 399       else {
 400          back = intel->front_region;
 401          front = intel->back_region;
 402       }
 403
 404       front_pitch = front->pitch * front->cpp;
 405       back_pitch = back->pitch * back->cpp;
 406       depth_pitch = depth->pitch * depth->cpp;
 407
 408       if (front->tiled) {
 409          FRONT_CMD |= XY_DST_TILED;
 410          front_pitch /= 4;
 411       }
 412
 413       if (back->tiled) {
 414          BACK_CMD |= XY_DST_TILED;
 415          back_pitch /= 4;
 416       }
 417
 418       if (depth->tiled) {
 419          DEPTH_CMD |= XY_DST_TILED;
 420          depth_pitch /= 4;
 421       }
 422
 423       for (i = 0 ; i < intel->numClipRects ; i++)
 424       {
 425          drm_clip_rect_t *box = &intel->pClipRects[i];
 426          drm_clip_rect_t b;
 427
 428          if (!all) {
 429             GLint x = box->x1;
 430             GLint y = box->y1;
 431             GLint w = box->x2 - x;
 432             GLint h = box->y2 - y;
 433
 434             if (x < cx) w -= cx - x, x = cx;
 435             if (y < cy) h -= cy - y, y = cy;
 436             if (x + w > cx + cw) w = cx + cw - x;
 437             if (y + h > cy + ch) h = cy + ch - y;
 438             if (w <= 0) continue;
 439             if (h <= 0) continue;
 440
 441             b.x1 = x;
 442             b.y1 = y;
 443             b.x2 = x + w;
 444             b.y2 = y + h;
 445          } else {
 446             b = *box;
 447          }
 448
 449
 450          if (b.x1 > b.x2 ||
 451              b.y1 > b.y2 ||
 452              b.x2 > intelScreen->width ||
 453              b.y2 > intelScreen->height)
 454             continue;
 455
 456          if ( flags & BUFFER_BIT_FRONT_LEFT ) {
 457             BEGIN_BATCH(6, INTEL_BATCH_NO_CLIPRECTS);
 458             OUT_BATCH( FRONT_CMD );
 459             OUT_BATCH( front_pitch | BR13 );
 460             OUT_BATCH( (b.y1 << 16) | b.x1 );
 461             OUT_BATCH( (b.y2 << 16) | b.x2 );
 462             OUT_BATCH( bmBufferOffset(intel, front->buffer) );
 463             OUT_BATCH( clear_color );
 464             ADVANCE_BATCH();
 465          }
 466
 467          if ( flags & BUFFER_BIT_BACK_LEFT ) {
 468             BEGIN_BATCH(6, INTEL_BATCH_NO_CLIPRECTS);
 469             OUT_BATCH( BACK_CMD );
 470             OUT_BATCH( back_pitch | BR13 );
 471             OUT_BATCH( (b.y1 << 16) | b.x1 );
 472             OUT_BATCH( (b.y2 << 16) | b.x2 );
 473             OUT_BATCH( bmBufferOffset(intel, back->buffer) );
 474             OUT_BATCH( clear_color );
 475             ADVANCE_BATCH();
 476          }
 477
 478          if ( flags & (BUFFER_BIT_STENCIL | BUFFER_BIT_DEPTH) ) {
 479             BEGIN_BATCH(6, INTEL_BATCH_NO_CLIPRECTS);
 480             OUT_BATCH( DEPTH_CMD );
 481             OUT_BATCH( depth_pitch | BR13 );
 482             OUT_BATCH( (b.y1 << 16) | b.x1 );
 483             OUT_BATCH( (b.y2 << 16) | b.x2 );
 484             OUT_BATCH( bmBufferOffset(intel, depth->buffer) );
 485             OUT_BATCH( clear_depth );
 486             ADVANCE_BATCH();
 487          }
 488       }
 489    }
 490    intel_batchbuffer_flush( intel->batch );
 491    UNLOCK_HARDWARE( intel );
 492 }
 493
 494