src/mesa/drivers/dri/intel/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 "main/mtypes.h"
  30 #include "main/context.h"
  31 #include "main/enums.h"
  32 #include "main/colormac.h"
  33
  34 #include "intel_blit.h"
  35 #include "intel_buffers.h"
  36 #include "intel_context.h"
  37 #include "intel_fbo.h"
  38 #include "intel_reg.h"
  39 #include "intel_regions.h"
  40 #include "intel_batchbuffer.h"
  41
  42 #define FILE_DEBUG_FLAG DEBUG_BLIT
  43
  44 static GLuint translate_raster_op(GLenum logicop)
  45 {
  46    switch(logicop) {
  47    case GL_CLEAR: return 0x00;
  48    case GL_AND: return 0x88;
  49    case GL_AND_REVERSE: return 0x44;
  50    case GL_COPY: return 0xCC;
  51    case GL_AND_INVERTED: return 0x22;
  52    case GL_NOOP: return 0xAA;
  53    case GL_XOR: return 0x66;
  54    case GL_OR: return 0xEE;
  55    case GL_NOR: return 0x11;
  56    case GL_EQUIV: return 0x99;
  57    case GL_INVERT: return 0x55;
  58    case GL_OR_REVERSE: return 0xDD;
  59    case GL_COPY_INVERTED: return 0x33;
  60    case GL_OR_INVERTED: return 0xBB;
  61    case GL_NAND: return 0x77;
  62    case GL_SET: return 0xFF;
  63    default: return 0;
  64    }
  65 }
  66
  67
  68 /* Copy BitBlt
  69  */
  70 GLboolean
  71 intelEmitCopyBlit(struct intel_context *intel,
  72                   GLuint cpp,
  73                   GLshort src_pitch,
  74                   dri_bo *src_buffer,
  75                   GLuint src_offset,
  76                   uint32_t src_tiling,
  77                   GLshort dst_pitch,
  78                   dri_bo *dst_buffer,
  79                   GLuint dst_offset,
  80                   uint32_t dst_tiling,
  81                   GLshort src_x, GLshort src_y,
  82                   GLshort dst_x, GLshort dst_y,
  83                   GLshort w, GLshort h,
  84                   GLenum logic_op)
  85 {
  86    GLuint CMD, BR13, pass = 0;
  87    int dst_y2 = dst_y + h;
  88    int dst_x2 = dst_x + w;
  89    dri_bo *aper_array[3];
  90    BATCH_LOCALS;
  91
  92    /* Blits are in a different ringbuffer so we don't use them. */
  93    if (intel->gen >= 6)
  94       return GL_FALSE;
  95
  96    if (dst_tiling != I915_TILING_NONE) {
  97       if (dst_offset & 4095)
  98          return GL_FALSE;
  99       if (dst_tiling == I915_TILING_Y)
 100          return GL_FALSE;
 101    }
 102    if (src_tiling != I915_TILING_NONE) {
 103       if (src_offset & 4095)
 104          return GL_FALSE;
 105       if (src_tiling == I915_TILING_Y)
 106          return GL_FALSE;
 107    }
 108
 109    /* do space check before going any further */
 110    do {
 111        aper_array[0] = intel->batch->buf;
 112        aper_array[1] = dst_buffer;
 113        aper_array[2] = src_buffer;
 114
 115        if (dri_bufmgr_check_aperture_space(aper_array, 3) != 0) {
 116            intel_batchbuffer_flush(intel->batch);
 117            pass++;
 118        } else
 119            break;
 120    } while (pass < 2);
 121
 122    intel_prepare_render(intel);
 123
 124    if (pass >= 2) {
 125        dri_bo_map(dst_buffer, GL_TRUE);
 126        dri_bo_map(src_buffer, GL_FALSE);
 127        _mesa_copy_rect((GLubyte *)dst_buffer->virtual + dst_offset,
 128                        cpp,
 129                        dst_pitch,
 130                        dst_x, dst_y,
 131                        w, h,
 132                        (GLubyte *)src_buffer->virtual + src_offset,
 133                        src_pitch,
 134                        src_x, src_y);
 135
 136        dri_bo_unmap(src_buffer);
 137        dri_bo_unmap(dst_buffer);
 138
 139        return GL_TRUE;
 140    }
 141
 142    intel_batchbuffer_require_space(intel->batch, 8 * 4);
 143    DBG("%s src:buf(%p)/%d+%d %d,%d dst:buf(%p)/%d+%d %d,%d sz:%dx%d\n",
 144        __FUNCTION__,
 145        src_buffer, src_pitch, src_offset, src_x, src_y,
 146        dst_buffer, dst_pitch, dst_offset, dst_x, dst_y, w, h);
 147
 148    src_pitch *= cpp;
 149    dst_pitch *= cpp;
 150
 151    BR13 = translate_raster_op(logic_op) << 16;
 152
 153    switch (cpp) {
 154    case 1:
 155       CMD = XY_SRC_COPY_BLT_CMD;
 156       break;
 157    case 2:
 158       BR13 |= BR13_565;
 159       CMD = XY_SRC_COPY_BLT_CMD;
 160       break;
 161    case 4:
 162       BR13 |= BR13_8888;
 163       CMD = XY_SRC_COPY_BLT_CMD | XY_BLT_WRITE_ALPHA | XY_BLT_WRITE_RGB;
 164       break;
 165    default:
 166       return GL_FALSE;
 167    }
 168
 169 #ifndef I915
 170    if (dst_tiling != I915_TILING_NONE) {
 171       CMD |= XY_DST_TILED;
 172       dst_pitch /= 4;
 173    }
 174    if (src_tiling != I915_TILING_NONE) {
 175       CMD |= XY_SRC_TILED;
 176       src_pitch /= 4;
 177    }
 178 #endif
 179
 180    if (dst_y2 <= dst_y || dst_x2 <= dst_x) {
 181       return GL_TRUE;
 182    }
 183
 184    assert(dst_x < dst_x2);
 185    assert(dst_y < dst_y2);
 186
 187    BEGIN_BATCH(8);
 188    OUT_BATCH(CMD);
 189    OUT_BATCH(BR13 | (uint16_t)dst_pitch);
 190    OUT_BATCH((dst_y << 16) | dst_x);
 191    OUT_BATCH((dst_y2 << 16) | dst_x2);
 192    OUT_RELOC(dst_buffer,
 193              I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
 194              dst_offset);
 195    OUT_BATCH((src_y << 16) | src_x);
 196    OUT_BATCH((uint16_t)src_pitch);
 197    OUT_RELOC(src_buffer,
 198              I915_GEM_DOMAIN_RENDER, 0,
 199              src_offset);
 200    ADVANCE_BATCH();
 201
 202    intel_batchbuffer_emit_mi_flush(intel->batch);
 203
 204    return GL_TRUE;
 205 }
 206
 207
 208 /**
 209  * Use blitting to clear the renderbuffers named by 'flags'.
 210  * Note: we can't use the ctx->DrawBuffer->_ColorDrawBufferIndexes field
 211  * since that might include software renderbuffers or renderbuffers
 212  * which we're clearing with triangles.
 213  * \param mask  bitmask of BUFFER_BIT_* values indicating buffers to clear
 214  */
 215 void
 216 intelClearWithBlit(GLcontext *ctx, GLbitfield mask)
 217 {
 218    struct intel_context *intel = intel_context(ctx);
 219    struct gl_framebuffer *fb = ctx->DrawBuffer;
 220    GLuint clear_depth;
 221    GLboolean all;
 222    GLint cx, cy, cw, ch;
 223    BATCH_LOCALS;
 224
 225    /* Blits are in a different ringbuffer so we don't use them. */
 226    assert(intel->gen < 6);
 227
 228    /*
 229     * Compute values for clearing the buffers.
 230     */
 231    clear_depth = 0;
 232    if (mask & BUFFER_BIT_DEPTH) {
 233       clear_depth = (GLuint) (fb->_DepthMax * ctx->Depth.Clear);
 234    }
 235    if (mask & BUFFER_BIT_STENCIL) {
 236       clear_depth |= (ctx->Stencil.Clear & 0xff) << 24;
 237    }
 238
 239    cx = fb->_Xmin;
 240    if (fb->Name == 0)
 241       cy = ctx->DrawBuffer->Height - fb->_Ymax;
 242    else
 243       cy = fb->_Ymin;
 244    cw = fb->_Xmax - fb->_Xmin;
 245    ch = fb->_Ymax - fb->_Ymin;
 246
 247    if (cw == 0 || ch == 0)
 248       return;
 249
 250    GLuint buf;
 251    all = (cw == fb->Width && ch == fb->Height);
 252
 253    intel_prepare_render(intel);
 254
 255    /* Loop over all renderbuffers */
 256    for (buf = 0; buf < BUFFER_COUNT && mask; buf++) {
 257       const GLbitfield bufBit = 1 << buf;
 258       struct intel_renderbuffer *irb;
 259       drm_intel_bo *write_buffer;
 260       int x1, y1, x2, y2;
 261       uint32_t clear_val;
 262       uint32_t BR13, CMD;
 263       int pitch, cpp;
 264       drm_intel_bo *aper_array[2];
 265
 266       if (!(mask & bufBit))
 267          continue;
 268
 269       /* OK, clear this renderbuffer */
 270       irb = intel_get_renderbuffer(fb, buf);
 271       write_buffer = intel_region_buffer(intel, irb->region,
 272                                          all ? INTEL_WRITE_FULL :
 273                                          INTEL_WRITE_PART);
 274       x1 = cx + irb->region->draw_x;
 275       y1 = cy + irb->region->draw_y;
 276       x2 = cx + cw + irb->region->draw_x;
 277       y2 = cy + ch + irb->region->draw_y;
 278
 279       pitch = irb->region->pitch;
 280       cpp = irb->region->cpp;
 281
 282       DBG("%s dst:buf(%p)/%d %d,%d sz:%dx%d\n",
 283           __FUNCTION__,
 284           irb->region->buffer, (pitch * cpp),
 285           x1, y1, x2 - x1, y2 - y1);
 286
 287       BR13 = 0xf0 << 16;
 288       CMD = XY_COLOR_BLT_CMD;
 289
 290       /* Setup the blit command */
 291       if (cpp == 4) {
 292          BR13 |= BR13_8888;
 293          if (buf == BUFFER_DEPTH || buf == BUFFER_STENCIL) {
 294             if (mask & BUFFER_BIT_DEPTH)
 295                CMD |= XY_BLT_WRITE_RGB;
 296             if (mask & BUFFER_BIT_STENCIL)
 297                CMD |= XY_BLT_WRITE_ALPHA;
 298          } else {
 299             /* clearing RGBA */
 300             CMD |= XY_BLT_WRITE_ALPHA | XY_BLT_WRITE_RGB;
 301          }
 302       } else {
 303          ASSERT(cpp == 2);
 304          BR13 |= BR13_565;
 305       }
 306
 307       assert(irb->region->tiling != I915_TILING_Y);
 308
 309 #ifndef I915
 310       if (irb->region->tiling != I915_TILING_NONE) {
 311          CMD |= XY_DST_TILED;
 312          pitch /= 4;
 313       }
 314 #endif
 315       BR13 |= (pitch * cpp);
 316
 317       if (buf == BUFFER_DEPTH || buf == BUFFER_STENCIL) {
 318          clear_val = clear_depth;
 319       } else {
 320          uint8_t clear[4];
 321          GLclampf *color = ctx->Color.ClearColor;
 322
 323          CLAMPED_FLOAT_TO_UBYTE(clear[0], color[0]);
 324          CLAMPED_FLOAT_TO_UBYTE(clear[1], color[1]);
 325          CLAMPED_FLOAT_TO_UBYTE(clear[2], color[2]);
 326          CLAMPED_FLOAT_TO_UBYTE(clear[3], color[3]);
 327
 328          switch (irb->Base.Format) {
 329          case MESA_FORMAT_ARGB8888:
 330          case MESA_FORMAT_XRGB8888:
 331             clear_val = PACK_COLOR_8888(clear[3], clear[0],
 332                                         clear[1], clear[2]);
 333             break;
 334          case MESA_FORMAT_RGB565:
 335             clear_val = PACK_COLOR_565(clear[0], clear[1], clear[2]);
 336             break;
 337          case MESA_FORMAT_ARGB4444:
 338             clear_val = PACK_COLOR_4444(clear[3], clear[0],
 339                                         clear[1], clear[2]);
 340             break;
 341          case MESA_FORMAT_ARGB1555:
 342             clear_val = PACK_COLOR_1555(clear[3], clear[0],
 343                                         clear[1], clear[2]);
 344             break;
 345          default:
 346             _mesa_problem(ctx, "Unexpected renderbuffer format: %d\n",
 347                           irb->Base.Format);
 348             clear_val = 0;
 349          }
 350       }
 351
 352       assert(x1 < x2);
 353       assert(y1 < y2);
 354
 355       /* do space check before going any further */
 356       aper_array[0] = intel->batch->buf;
 357       aper_array[1] = write_buffer;
 358
 359       if (drm_intel_bufmgr_check_aperture_space(aper_array,
 360                                                 ARRAY_SIZE(aper_array)) != 0) {
 361          intel_batchbuffer_flush(intel->batch);
 362       }
 363
 364       BEGIN_BATCH(6);
 365       OUT_BATCH(CMD);
 366       OUT_BATCH(BR13);
 367       OUT_BATCH((y1 << 16) | x1);
 368       OUT_BATCH((y2 << 16) | x2);
 369       OUT_RELOC(write_buffer,
 370                 I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
 371                 0);
 372       OUT_BATCH(clear_val);
 373       ADVANCE_BATCH();
 374
 375       if (buf == BUFFER_DEPTH || buf == BUFFER_STENCIL)
 376          mask &= ~(BUFFER_BIT_DEPTH | BUFFER_BIT_STENCIL);
 377       else
 378          mask &= ~bufBit;    /* turn off bit, for faster loop exit */
 379    }
 380 }
 381
 382 GLboolean
 383 intelEmitImmediateColorExpandBlit(struct intel_context *intel,
 384                                   GLuint cpp,
 385                                   GLubyte *src_bits, GLuint src_size,
 386                                   GLuint fg_color,
 387                                   GLshort dst_pitch,
 388                                   dri_bo *dst_buffer,
 389                                   GLuint dst_offset,
 390                                   uint32_t dst_tiling,
 391                                   GLshort x, GLshort y,
 392                                   GLshort w, GLshort h,
 393                                   GLenum logic_op)
 394 {
 395    int dwords = ALIGN(src_size, 8) / 4;
 396    uint32_t opcode, br13, blit_cmd;
 397
 398    /* Blits are in a different ringbuffer so we don't use them. */
 399    if (intel->gen >= 6)
 400       return GL_FALSE;
 401
 402    if (dst_tiling != I915_TILING_NONE) {
 403       if (dst_offset & 4095)
 404          return GL_FALSE;
 405       if (dst_tiling == I915_TILING_Y)
 406          return GL_FALSE;
 407    }
 408
 409    assert( logic_op - GL_CLEAR >= 0 );
 410    assert( logic_op - GL_CLEAR < 0x10 );
 411    assert(dst_pitch > 0);
 412
 413    if (w < 0 || h < 0)
 414       return GL_TRUE;
 415
 416    dst_pitch *= cpp;
 417
 418    DBG("%s dst:buf(%p)/%d+%d %d,%d sz:%dx%d, %d bytes %d dwords\n",
 419        __FUNCTION__,
 420        dst_buffer, dst_pitch, dst_offset, x, y, w, h, src_size, dwords);
 421
 422    intel_batchbuffer_require_space( intel->batch,
 423                                     (8 * 4) +
 424                                     (3 * 4) +
 425                                     dwords * 4 );
 426
 427    opcode = XY_SETUP_BLT_CMD;
 428    if (cpp == 4)
 429       opcode |= XY_BLT_WRITE_ALPHA | XY_BLT_WRITE_RGB;
 430 #ifndef I915
 431    if (dst_tiling != I915_TILING_NONE) {
 432       opcode |= XY_DST_TILED;
 433       dst_pitch /= 4;
 434    }
 435 #endif
 436
 437    br13 = dst_pitch | (translate_raster_op(logic_op) << 16) | (1 << 29);
 438    if (cpp == 2)
 439       br13 |= BR13_565;
 440    else
 441       br13 |= BR13_8888;
 442
 443    blit_cmd = XY_TEXT_IMMEDIATE_BLIT_CMD | XY_TEXT_BYTE_PACKED; /* packing? */
 444    if (dst_tiling != I915_TILING_NONE)
 445       blit_cmd |= XY_DST_TILED;
 446
 447    BEGIN_BATCH(8 + 3);
 448    OUT_BATCH(opcode);
 449    OUT_BATCH(br13);
 450    OUT_BATCH((0 << 16) | 0); /* clip x1, y1 */
 451    OUT_BATCH((100 << 16) | 100); /* clip x2, y2 */
 452    OUT_RELOC(dst_buffer,
 453              I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
 454              dst_offset);
 455    OUT_BATCH(0); /* bg */
 456    OUT_BATCH(fg_color); /* fg */
 457    OUT_BATCH(0); /* pattern base addr */
 458
 459    OUT_BATCH(blit_cmd | ((3 - 2) + dwords));
 460    OUT_BATCH((y << 16) | x);
 461    OUT_BATCH(((y + h) << 16) | (x + w));
 462    ADVANCE_BATCH();
 463
 464    intel_batchbuffer_data( intel->batch,
 465                            src_bits,
 466                            dwords * 4 );
 467
 468    intel_batchbuffer_emit_mi_flush(intel->batch);
 469
 470    return GL_TRUE;
 471 }
 472
 473 /* We don't have a memmove-type blit like some other hardware, so we'll do a
 474  * rectangular blit covering a large space, then emit 1-scanline blit at the
 475  * end to cover the last if we need.
 476  */
 477 void
 478 intel_emit_linear_blit(struct intel_context *intel,
 479                        drm_intel_bo *dst_bo,
 480                        unsigned int dst_offset,
 481                        drm_intel_bo *src_bo,
 482                        unsigned int src_offset,
 483                        unsigned int size)
 484 {
 485    GLuint pitch, height;
 486
 487    /* Blits are in a different ringbuffer so we don't use them. */
 488    assert(intel->gen < 6);
 489
 490    /* The pitch is a signed value. */
 491    pitch = MIN2(size, (1 << 15) - 1);
 492    height = size / pitch;
 493    intelEmitCopyBlit(intel, 1,
 494                      pitch, src_bo, src_offset, I915_TILING_NONE,
 495                      pitch, dst_bo, dst_offset, I915_TILING_NONE,
 496                      0, 0, /* src x/y */
 497                      0, 0, /* dst x/y */
 498                      pitch, height, /* w, h */
 499                      GL_COPY);
 500
 501    src_offset += pitch * height;
 502    dst_offset += pitch * height;
 503    size -= pitch * height;
 504    assert (size < (1 << 15));
 505    if (size != 0) {
 506       intelEmitCopyBlit(intel, 1,
 507                         size, src_bo, src_offset, I915_TILING_NONE,
 508                         size, dst_bo, dst_offset, I915_TILING_NONE,
 509                         0, 0, /* src x/y */
 510                         0, 0, /* dst x/y */
 511                         size, 1, /* w, h */
 512                         GL_COPY);
 513    }
 514 }