src/gallium/state_trackers/vega/mask.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 VMware, Inc.  All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sub license, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial portions
  15  * of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  20  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  21  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  22  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  23  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  **************************************************************************/
  26
  27 #include "mask.h"
  28
  29 #include "path.h"
  30 #include "image.h"
  31 #include "shaders_cache.h"
  32 #include "renderer.h"
  33 #include "asm_util.h"
  34 #include "st_inlines.h"
  35
  36 #include "pipe/p_context.h"
  37 #include "pipe/p_screen.h"
  38 #include "util/u_inlines.h"
  39 #include "util/u_format.h"
  40 #include "util/u_memory.h"
  41
  42 struct vg_mask_layer {
  43    struct vg_object base;
  44
  45    VGint width;
  46    VGint height;
  47
  48    struct pipe_sampler_view *sampler_view;
  49 };
  50
  51 static INLINE struct pipe_surface *
  52 alpha_mask_surface(struct vg_context *ctx, int usage)
  53 {
  54    struct pipe_screen *screen = ctx->pipe->screen;
  55    struct st_framebuffer *stfb = ctx->draw_buffer;
  56    return screen->get_tex_surface(screen,
  57                                   stfb->alpha_mask_view->texture,
  58                                   0, 0, 0,
  59                                   usage);
  60 }
  61
  62 static INLINE VGboolean
  63 intersect_rectangles(VGint dwidth, VGint dheight,
  64                      VGint swidth, VGint sheight,
  65                      VGint tx, VGint ty,
  66                      VGint twidth, VGint theight,
  67                      VGint *offsets,
  68                      VGint *location)
  69 {
  70    if (tx + twidth <= 0 || tx >= dwidth)
  71       return VG_FALSE;
  72    if (ty + theight <= 0 || ty >= dheight)
  73       return VG_FALSE;
  74
  75    offsets[0] = 0;
  76    offsets[1] = 0;
  77    location[0] = tx;
  78    location[1] = ty;
  79
  80    if (tx < 0) {
  81       offsets[0] -= tx;
  82       location[0] = 0;
  83
  84       location[2] = MIN2(tx + swidth, MIN2(dwidth, tx + twidth));
  85       offsets[2] = location[2];
  86    } else {
  87       offsets[2] = MIN2(twidth, MIN2(dwidth - tx, swidth ));
  88       location[2] = offsets[2];
  89    }
  90
  91    if (ty < 0) {
  92       offsets[1] -= ty;
  93       location[1] = 0;
  94
  95       location[3] = MIN2(ty + sheight, MIN2(dheight, ty + theight));
  96       offsets[3] = location[3];
  97    } else {
  98       offsets[3] = MIN2(theight, MIN2(dheight - ty, sheight));
  99       location[3] = offsets[3];
 100    }
 101
 102    return VG_TRUE;
 103 }
 104
 105 #if DEBUG_MASKS
 106 static void read_alpha_mask(void * data, VGint dataStride,
 107                             VGImageFormat dataFormat,
 108                             VGint sx, VGint sy,
 109                             VGint width, VGint height)
 110 {
 111    struct vg_context *ctx = vg_current_context();
 112    struct pipe_context *pipe = ctx->pipe;
 113    struct pipe_screen *screen = pipe->screen;
 114
 115    struct st_framebuffer *stfb = ctx->draw_buffer;
 116    struct st_renderbuffer *strb = stfb->alpha_mask;
 117    struct pipe_framebuffer_state *fb = &ctx->state.g3d.fb;
 118
 119    VGfloat temp[VEGA_MAX_IMAGE_WIDTH][4];
 120    VGfloat *df = (VGfloat*)temp;
 121    VGint y = (fb->height - sy) - 1, yStep = -1;
 122    VGint i;
 123    VGubyte *dst = (VGubyte *)data;
 124    VGint xoffset = 0, yoffset = 0;
 125
 126    /* make sure rendering has completed */
 127    pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 128    if (sx < 0) {
 129       xoffset = -sx;
 130       xoffset *= _vega_size_for_format(dataFormat);
 131       width += sx;
 132       sx = 0;
 133    }
 134    if (sy < 0) {
 135       yoffset = -sy;
 136       height += sy;
 137       sy = 0;
 138       y = (fb->height - sy) - 1;
 139       yoffset *= dataStride;
 140    }
 141
 142    {
 143       struct pipe_surface *surf;
 144
 145       surf = screen->get_tex_surface(screen, strb->texture,  0, 0, 0,
 146                                      PIPE_BIND_TRANSFER_READ);
 147
 148       /* Do a row at a time to flip image data vertically */
 149       for (i = 0; i < height; i++) {
 150 #if 0
 151          debug_printf("%d-%d  == %d\n", sy, height, y);
 152 #endif
 153          pipe_get_tile_rgba(surf, sx, y, width, 1, df);
 154          y += yStep;
 155          _vega_pack_rgba_span_float(ctx, width, temp, dataFormat,
 156                                     dst + yoffset + xoffset);
 157          dst += dataStride;
 158       }
 159
 160       pipe_surface_reference(&surf, NULL);
 161    }
 162 }
 163
 164 void save_alpha_to_file(const char *filename)
 165 {
 166    struct vg_context *ctx = vg_current_context();
 167    struct pipe_framebuffer_state *fb = &ctx->state.g3d.fb;
 168    VGint *data;
 169    int i, j;
 170
 171    data = malloc(sizeof(int) * fb->width * fb->height);
 172    read_alpha_mask(data, fb->width * sizeof(int),
 173                    VG_sRGBA_8888,
 174                    0, 0, fb->width, fb->height);
 175    fprintf(stderr, "/*---------- start */\n");
 176    fprintf(stderr, "const int image_width = %d;\n",
 177            fb->width);
 178    fprintf(stderr, "const int image_height = %d;\n",
 179            fb->height);
 180    fprintf(stderr, "const int image_data = {\n");
 181    for (i = 0; i < fb->height; ++i) {
 182       for (j = 0; j < fb->width; ++j) {
 183          int rgba = data[i * fb->height + j];
 184          int argb = 0;
 185          argb = (rgba >> 8);
 186          argb |= ((rgba & 0xff) << 24);
 187          fprintf(stderr, "0x%x, ", argb);
 188       }
 189       fprintf(stderr, "\n");
 190    }
 191    fprintf(stderr, "};\n");
 192    fprintf(stderr, "/*---------- end */\n");
 193 }
 194 #endif
 195
 196 /* setup mask shader */
 197 static void *setup_mask_operation(VGMaskOperation operation)
 198 {
 199    struct vg_context *ctx = vg_current_context();
 200    void *shader = 0;
 201
 202    switch (operation) {
 203    case VG_UNION_MASK: {
 204       if (!ctx->mask.union_fs) {
 205          ctx->mask.union_fs = shader_create_from_text(ctx->pipe,
 206                                                       union_mask_asm,
 207                                                       200,
 208                                                       PIPE_SHADER_FRAGMENT);
 209       }
 210       shader = ctx->mask.union_fs->driver;
 211    }
 212       break;
 213    case VG_INTERSECT_MASK: {
 214       if (!ctx->mask.intersect_fs) {
 215          ctx->mask.intersect_fs = shader_create_from_text(ctx->pipe,
 216                                                           intersect_mask_asm,
 217                                                           200,
 218                                                           PIPE_SHADER_FRAGMENT);
 219       }
 220       shader = ctx->mask.intersect_fs->driver;
 221    }
 222       break;
 223    case VG_SUBTRACT_MASK: {
 224       if (!ctx->mask.subtract_fs) {
 225          ctx->mask.subtract_fs = shader_create_from_text(ctx->pipe,
 226                                                          subtract_mask_asm,
 227                                                          200,
 228                                                          PIPE_SHADER_FRAGMENT);
 229       }
 230       shader = ctx->mask.subtract_fs->driver;
 231    }
 232       break;
 233    case VG_SET_MASK: {
 234       if (!ctx->mask.set_fs) {
 235          ctx->mask.set_fs = shader_create_from_text(ctx->pipe,
 236                                                     set_mask_asm,
 237                                                     200,
 238                                                     PIPE_SHADER_FRAGMENT);
 239       }
 240       shader = ctx->mask.set_fs->driver;
 241    }
 242       break;
 243    default:
 244          assert(0);
 245       break;
 246    }
 247
 248    return shader;
 249 }
 250
 251 static void mask_resource_fill(struct pipe_resource *dst,
 252                                int x, int y, int width, int height,
 253                                VGfloat coverage)
 254 {
 255    struct vg_context *ctx = vg_current_context();
 256    VGfloat color[4] = { 0.0f, 0.0f, 0.0f, coverage };
 257    void *fs;
 258
 259    if (x < 0) {
 260       width += x;
 261       x = 0;
 262    }
 263    if (y < 0) {
 264       height += y;
 265       y = 0;
 266    }
 267
 268    fs = shaders_cache_fill(ctx->sc, VEGA_SOLID_FILL_SHADER);
 269
 270    if (renderer_filter_begin(ctx->renderer, dst, VG_FALSE,
 271             ~0, NULL, NULL, 0, fs, (const void *) color, sizeof(color))) {
 272       renderer_filter(ctx->renderer, x, y, width, height, 0, 0, 0, 0);
 273       renderer_filter_end(ctx->renderer);
 274    }
 275
 276 #if DEBUG_MASKS
 277    save_alpha_to_file(0);
 278 #endif
 279 }
 280
 281
 282 static void mask_using_texture(struct pipe_sampler_view *sampler_view,
 283                                VGMaskOperation operation,
 284                                VGint x, VGint y,
 285                                VGint width, VGint height)
 286 {
 287    struct vg_context *ctx = vg_current_context();
 288    struct pipe_resource *dst = ctx->draw_buffer->alpha_mask_view->texture;
 289    struct pipe_resource *texture = sampler_view->texture;
 290    const struct pipe_sampler_state *samplers[2];
 291    struct pipe_sampler_view *views[2];
 292    struct pipe_sampler_state sampler;
 293    VGint offsets[4], loc[4];
 294    const VGfloat ones[4] = {1.f, 1.f, 1.f, 1.f};
 295    void *fs;
 296
 297    if (!intersect_rectangles(dst->width0, dst->height0,
 298                              texture->width0, texture->height0,
 299                              x, y, width, height,
 300                              offsets, loc))
 301       return;
 302 #if 0
 303    debug_printf("Offset = [%d, %d, %d, %d]\n", offsets[0],
 304                 offsets[1], offsets[2], offsets[3]);
 305    debug_printf("Locati = [%d, %d, %d, %d]\n", loc[0],
 306                 loc[1], loc[2], loc[3]);
 307 #endif
 308
 309    sampler = ctx->mask.sampler;
 310    sampler.normalized_coords = 1;
 311    samplers[0] = &sampler;
 312    views[0] = sampler_view;
 313
 314    /* prepare our blend surface */
 315    vg_prepare_blend_surface_from_mask(ctx);
 316    samplers[1] = &ctx->mask.sampler;
 317    views[1] = ctx->draw_buffer->blend_texture_view;
 318
 319    fs = setup_mask_operation(operation);
 320
 321    if (renderer_filter_begin(ctx->renderer, dst, VG_FALSE,
 322             ~0, samplers, views, 2, fs, (const void *) ones, sizeof(ones))) {
 323       renderer_filter(ctx->renderer,
 324             loc[0], loc[1], loc[2], loc[3],
 325             offsets[0], offsets[1], offsets[2], offsets[3]);
 326       renderer_filter_end(ctx->renderer);
 327    }
 328 }
 329
 330
 331 #ifdef OPENVG_VERSION_1_1
 332
 333 struct vg_mask_layer * mask_layer_create(VGint width, VGint height)
 334 {
 335    struct vg_context *ctx = vg_current_context();
 336    struct vg_mask_layer *mask = 0;
 337
 338    mask = CALLOC_STRUCT(vg_mask_layer);
 339    vg_init_object(&mask->base, ctx, VG_OBJECT_MASK);
 340    mask->width = width;
 341    mask->height = height;
 342
 343    {
 344       struct pipe_resource pt;
 345       struct pipe_context *pipe = ctx->pipe;
 346       struct pipe_screen *screen = ctx->pipe->screen;
 347       struct pipe_sampler_view view_templ;
 348       struct pipe_sampler_view *view = NULL;
 349       struct pipe_resource *texture;
 350
 351       memset(&pt, 0, sizeof(pt));
 352       pt.target = PIPE_TEXTURE_2D;
 353       pt.format = PIPE_FORMAT_B8G8R8A8_UNORM;
 354       pt.last_level = 0;
 355       pt.width0 = width;
 356       pt.height0 = height;
 357       pt.depth0 = 1;
 358       pt.bind = PIPE_BIND_SAMPLER_VIEW;
 359       pt.compressed = 0;
 360
 361       texture = screen->resource_create(screen, &pt);
 362
 363       if (texture) {
 364          u_sampler_view_default_template(&view_templ, texture, texture->format);
 365          view = pipe->create_sampler_view(pipe, texture, &view_templ);
 366       }
 367       pipe_resource_reference(&texture, NULL);
 368       mask->sampler_view = view;
 369    }
 370
 371    vg_context_add_object(ctx, VG_OBJECT_MASK, mask);
 372
 373    return mask;
 374 }
 375
 376 void mask_layer_destroy(struct vg_mask_layer *layer)
 377 {
 378    struct vg_context *ctx = vg_current_context();
 379
 380    vg_context_remove_object(ctx, VG_OBJECT_MASK, layer);
 381    pipe_resource_release(&layer->texture);
 382    FREE(layer);
 383 }
 384
 385 void mask_layer_fill(struct vg_mask_layer *layer,
 386                      VGint x, VGint y,
 387                      VGint width, VGint height,
 388                      VGfloat value)
 389 {
 390    VGfloat alpha_color[4] = {0, 0, 0, 0};
 391
 392    alpha_color[3] = value;
 393
 394    mask_resource_fill(layer->sampler_view->texture,
 395                       x, y, width, height, value);
 396 }
 397
 398 void mask_copy(struct vg_mask_layer *layer,
 399                VGint sx, VGint sy,
 400                VGint dx, VGint dy,
 401                VGint width, VGint height)
 402 {
 403     struct vg_context *ctx = vg_current_context();
 404     struct st_framebuffer *fb_buffers = ctx->draw_buffer;
 405
 406     renderer_copy_texture(ctx->renderer,
 407                           layer->sampler_view,
 408                           sx, sy,
 409                           sx + width, sy + height,
 410                           fb_buffers->alpha_mask_view->texture,
 411                           dx, dy,
 412                           dx + width, dy + height);
 413 }
 414
 415 static void mask_layer_render_to(struct vg_mask_layer *layer,
 416                                  struct path *path,
 417                                  VGbitfield paint_modes)
 418 {
 419 #if 0
 420    struct vg_context *ctx = vg_current_context();
 421    const VGfloat fill_color[4] = {1.f, 1.f, 1.f, 1.f};
 422    struct pipe_screen *screen = ctx->pipe->screen;
 423    struct pipe_surface *surface;
 424
 425    surface = screen->get_tex_surface(screen, layer->sampler_view->texture,  0, 0, 0,
 426                                      PIPE_BIND_RENDER_TARGET);
 427
 428    cso_save_framebuffer(ctx->cso_context);
 429    cso_save_fragment_shader(ctx->cso_context);
 430
 431    setup_mask_blend();
 432    setup_mask_fill(fill_color);
 433    setup_mask_framebuffer(surface, layer->width, layer->height);
 434
 435    if (paint_modes & VG_FILL_PATH) {
 436       struct matrix *mat = &ctx->state.vg.path_user_to_surface_matrix;
 437       path_fill(path, mat);
 438    }
 439
 440    if (paint_modes & VG_STROKE_PATH){
 441       path_stroke(path);
 442    }
 443
 444
 445    /* make sure rendering has completed */
 446    ctx->pipe->flush(ctx->pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 447
 448    cso_restore_framebuffer(ctx->cso_context);
 449    cso_restore_fragment_shader(ctx->cso_context);
 450    ctx->state.dirty |= BLEND_DIRTY;
 451
 452    pipe_surface_reference(&surface, NULL);
 453 #endif
 454 }
 455
 456 void mask_render_to(struct path *path,
 457                     VGbitfield paint_modes,
 458                     VGMaskOperation operation)
 459 {
 460    struct vg_context *ctx = vg_current_context();
 461    struct st_framebuffer *fb_buffers = ctx->draw_buffer;
 462    struct vg_mask_layer *temp_layer;
 463    VGint width, height;
 464
 465    width = fb_buffers->alpha_mask_view->texture->width0;
 466    height = fb_buffers->alpha_mask_view->texture->width0;
 467
 468    temp_layer = mask_layer_create(width, height);
 469
 470    mask_layer_render_to(temp_layer, path, paint_modes);
 471
 472    mask_using_layer(temp_layer, 0, 0, width, height,
 473                     operation);
 474
 475    mask_layer_destroy(temp_layer);
 476 }
 477
 478 void mask_using_layer(struct vg_mask_layer *layer,
 479                       VGMaskOperation operation,
 480                       VGint x, VGint y,
 481                       VGint width, VGint height)
 482 {
 483    mask_using_texture(layer->sampler_view, operation,
 484                       x, y, width, height);
 485 }
 486
 487 VGint mask_layer_width(struct vg_mask_layer *layer)
 488 {
 489    return layer->width;
 490 }
 491
 492 VGint mask_layer_height(struct vg_mask_layer *layer)
 493 {
 494    return layer->height;
 495 }
 496
 497
 498 #endif
 499
 500 void mask_using_image(struct vg_image *image,
 501                       VGMaskOperation operation,
 502                       VGint x, VGint y,
 503                       VGint width, VGint height)
 504 {
 505    mask_using_texture(image->sampler_view, operation,
 506                       x, y, width, height);
 507 }
 508
 509 void mask_fill(VGint x, VGint y, VGint width, VGint height,
 510                VGfloat value)
 511 {
 512    struct vg_context *ctx = vg_current_context();
 513
 514 #if DEBUG_MASKS
 515    debug_printf("mask_fill(%d, %d, %d, %d) with  rgba(%f, %f, %f, %f)\n",
 516                 x, y, width, height,
 517                 0.0f, 0.0f, 0.0f, value);
 518 #endif
 519
 520    mask_resource_fill(ctx->draw_buffer->alpha_mask_view->texture,
 521                       x, y, width, height, value);
 522 }
 523
 524 VGint mask_bind_samplers(struct pipe_sampler_state **samplers,
 525                          struct pipe_sampler_view **sampler_views)
 526 {
 527    struct vg_context *ctx = vg_current_context();
 528
 529    if (ctx->state.vg.masking) {
 530       struct st_framebuffer *fb_buffers = ctx->draw_buffer;
 531
 532       samplers[1] = &ctx->mask.sampler;
 533       sampler_views[1] = fb_buffers->alpha_mask_view;
 534       return 1;
 535    } else
 536       return 0;
 537 }