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
 118    VGfloat temp[VEGA_MAX_IMAGE_WIDTH][4];
 119    VGfloat *df = (VGfloat*)temp;
 120    VGint y = (stfb->height - sy) - 1, yStep = -1;
 121    VGint i;
 122    VGubyte *dst = (VGubyte *)data;
 123    VGint xoffset = 0, yoffset = 0;
 124
 125    /* make sure rendering has completed */
 126    pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 127    if (sx < 0) {
 128       xoffset = -sx;
 129       xoffset *= _vega_size_for_format(dataFormat);
 130       width += sx;
 131       sx = 0;
 132    }
 133    if (sy < 0) {
 134       yoffset = -sy;
 135       height += sy;
 136       sy = 0;
 137       y = (stfb->height - sy) - 1;
 138       yoffset *= dataStride;
 139    }
 140
 141    {
 142       struct pipe_surface *surf;
 143
 144       surf = screen->get_tex_surface(screen, strb->texture,  0, 0, 0,
 145                                      PIPE_BIND_TRANSFER_READ);
 146
 147       /* Do a row at a time to flip image data vertically */
 148       for (i = 0; i < height; i++) {
 149 #if 0
 150          debug_printf("%d-%d  == %d\n", sy, height, y);
 151 #endif
 152          pipe_get_tile_rgba(surf, sx, y, width, 1, df);
 153          y += yStep;
 154          _vega_pack_rgba_span_float(ctx, width, temp, dataFormat,
 155                                     dst + yoffset + xoffset);
 156          dst += dataStride;
 157       }
 158
 159       pipe_surface_reference(&surf, NULL);
 160    }
 161 }
 162
 163 void save_alpha_to_file(const char *filename)
 164 {
 165    struct vg_context *ctx = vg_current_context();
 166    struct st_framebuffer *stfb = ctx->draw_buffer;
 167    VGint *data;
 168    int i, j;
 169
 170    data = malloc(sizeof(int) * stfb->width * stfb->height);
 171    read_alpha_mask(data, stfb->width * sizeof(int),
 172                    VG_sRGBA_8888,
 173                    0, 0, stfb->width, stfb->height);
 174    fprintf(stderr, "/*---------- start */\n");
 175    fprintf(stderr, "const int image_width = %d;\n",
 176            stfb->width);
 177    fprintf(stderr, "const int image_height = %d;\n",
 178            stfb->height);
 179    fprintf(stderr, "const int image_data = {\n");
 180    for (i = 0; i < stfb->height; ++i) {
 181       for (j = 0; j < stfb->width; ++j) {
 182          int rgba = data[i * stfb->height + j];
 183          int argb = 0;
 184          argb = (rgba >> 8);
 185          argb |= ((rgba & 0xff) << 24);
 186          fprintf(stderr, "0x%x, ", argb);
 187       }
 188       fprintf(stderr, "\n");
 189    }
 190    fprintf(stderr, "};\n");
 191    fprintf(stderr, "/*---------- end */\n");
 192 }
 193 #endif
 194
 195 /* setup mask shader */
 196 static void *setup_mask_operation(VGMaskOperation operation)
 197 {
 198    struct vg_context *ctx = vg_current_context();
 199    void *shader = 0;
 200
 201    switch (operation) {
 202    case VG_UNION_MASK: {
 203       if (!ctx->mask.union_fs) {
 204          ctx->mask.union_fs = shader_create_from_text(ctx->pipe,
 205                                                       union_mask_asm,
 206                                                       200,
 207                                                       PIPE_SHADER_FRAGMENT);
 208       }
 209       shader = ctx->mask.union_fs->driver;
 210    }
 211       break;
 212    case VG_INTERSECT_MASK: {
 213       if (!ctx->mask.intersect_fs) {
 214          ctx->mask.intersect_fs = shader_create_from_text(ctx->pipe,
 215                                                           intersect_mask_asm,
 216                                                           200,
 217                                                           PIPE_SHADER_FRAGMENT);
 218       }
 219       shader = ctx->mask.intersect_fs->driver;
 220    }
 221       break;
 222    case VG_SUBTRACT_MASK: {
 223       if (!ctx->mask.subtract_fs) {
 224          ctx->mask.subtract_fs = shader_create_from_text(ctx->pipe,
 225                                                          subtract_mask_asm,
 226                                                          200,
 227                                                          PIPE_SHADER_FRAGMENT);
 228       }
 229       shader = ctx->mask.subtract_fs->driver;
 230    }
 231       break;
 232    case VG_SET_MASK: {
 233       if (!ctx->mask.set_fs) {
 234          ctx->mask.set_fs = shader_create_from_text(ctx->pipe,
 235                                                     set_mask_asm,
 236                                                     200,
 237                                                     PIPE_SHADER_FRAGMENT);
 238       }
 239       shader = ctx->mask.set_fs->driver;
 240    }
 241       break;
 242    default:
 243          assert(0);
 244       break;
 245    }
 246
 247    return shader;
 248 }
 249
 250 static void mask_resource_fill(struct pipe_resource *dst,
 251                                int x, int y, int width, int height,
 252                                VGfloat coverage)
 253 {
 254    struct vg_context *ctx = vg_current_context();
 255    VGfloat color[4] = { 0.0f, 0.0f, 0.0f, coverage };
 256    void *fs;
 257
 258    if (x < 0) {
 259       width += x;
 260       x = 0;
 261    }
 262    if (y < 0) {
 263       height += y;
 264       y = 0;
 265    }
 266
 267    fs = shaders_cache_fill(ctx->sc, VEGA_SOLID_FILL_SHADER);
 268
 269    if (renderer_filter_begin(ctx->renderer, dst, VG_FALSE,
 270             ~0, NULL, NULL, 0, fs, (const void *) color, sizeof(color))) {
 271       renderer_filter(ctx->renderer, x, y, width, height, 0, 0, 0, 0);
 272       renderer_filter_end(ctx->renderer);
 273    }
 274
 275 #if DEBUG_MASKS
 276    save_alpha_to_file(0);
 277 #endif
 278 }
 279
 280
 281 static void mask_using_texture(struct pipe_sampler_view *sampler_view,
 282                                VGMaskOperation operation,
 283                                VGint x, VGint y,
 284                                VGint width, VGint height)
 285 {
 286    struct vg_context *ctx = vg_current_context();
 287    struct pipe_resource *dst = ctx->draw_buffer->alpha_mask_view->texture;
 288    struct pipe_resource *texture = sampler_view->texture;
 289    const struct pipe_sampler_state *samplers[2];
 290    struct pipe_sampler_view *views[2];
 291    struct pipe_sampler_state sampler;
 292    VGint offsets[4], loc[4];
 293    const VGfloat ones[4] = {1.f, 1.f, 1.f, 1.f};
 294    void *fs;
 295
 296    if (!intersect_rectangles(dst->width0, dst->height0,
 297                              texture->width0, texture->height0,
 298                              x, y, width, height,
 299                              offsets, loc))
 300       return;
 301 #if 0
 302    debug_printf("Offset = [%d, %d, %d, %d]\n", offsets[0],
 303                 offsets[1], offsets[2], offsets[3]);
 304    debug_printf("Locati = [%d, %d, %d, %d]\n", loc[0],
 305                 loc[1], loc[2], loc[3]);
 306 #endif
 307
 308    sampler = ctx->mask.sampler;
 309    sampler.normalized_coords = 1;
 310    samplers[0] = &sampler;
 311    views[0] = sampler_view;
 312
 313    /* prepare our blend surface */
 314    vg_prepare_blend_surface_from_mask(ctx);
 315    samplers[1] = &ctx->mask.sampler;
 316    views[1] = ctx->draw_buffer->blend_texture_view;
 317
 318    fs = setup_mask_operation(operation);
 319
 320    if (renderer_filter_begin(ctx->renderer, dst, VG_FALSE,
 321             ~0, samplers, views, 2, fs, (const void *) ones, sizeof(ones))) {
 322       renderer_filter(ctx->renderer,
 323             loc[0], loc[1], loc[2], loc[3],
 324             offsets[0], offsets[1], offsets[2], offsets[3]);
 325       renderer_filter_end(ctx->renderer);
 326    }
 327 }
 328
 329
 330 #ifdef OPENVG_VERSION_1_1
 331
 332 struct vg_mask_layer * mask_layer_create(VGint width, VGint height)
 333 {
 334    struct vg_context *ctx = vg_current_context();
 335    struct vg_mask_layer *mask = 0;
 336
 337    mask = CALLOC_STRUCT(vg_mask_layer);
 338    vg_init_object(&mask->base, ctx, VG_OBJECT_MASK);
 339    mask->width = width;
 340    mask->height = height;
 341
 342    {
 343       struct pipe_resource pt;
 344       struct pipe_context *pipe = ctx->pipe;
 345       struct pipe_screen *screen = ctx->pipe->screen;
 346       struct pipe_sampler_view view_templ;
 347       struct pipe_sampler_view *view = NULL;
 348       struct pipe_resource *texture;
 349
 350       memset(&pt, 0, sizeof(pt));
 351       pt.target = PIPE_TEXTURE_2D;
 352       pt.format = PIPE_FORMAT_B8G8R8A8_UNORM;
 353       pt.last_level = 0;
 354       pt.width0 = width;
 355       pt.height0 = height;
 356       pt.depth0 = 1;
 357       pt.bind = PIPE_BIND_SAMPLER_VIEW;
 358       pt.compressed = 0;
 359
 360       texture = screen->resource_create(screen, &pt);
 361
 362       if (texture) {
 363          u_sampler_view_default_template(&view_templ, texture, texture->format);
 364          view = pipe->create_sampler_view(pipe, texture, &view_templ);
 365       }
 366       pipe_resource_reference(&texture, NULL);
 367       mask->sampler_view = view;
 368    }
 369
 370    vg_context_add_object(ctx, VG_OBJECT_MASK, mask);
 371
 372    return mask;
 373 }
 374
 375 void mask_layer_destroy(struct vg_mask_layer *layer)
 376 {
 377    struct vg_context *ctx = vg_current_context();
 378
 379    vg_context_remove_object(ctx, VG_OBJECT_MASK, layer);
 380    pipe_resource_release(&layer->texture);
 381    FREE(layer);
 382 }
 383
 384 void mask_layer_fill(struct vg_mask_layer *layer,
 385                      VGint x, VGint y,
 386                      VGint width, VGint height,
 387                      VGfloat value)
 388 {
 389    VGfloat alpha_color[4] = {0, 0, 0, 0};
 390
 391    alpha_color[3] = value;
 392
 393    mask_resource_fill(layer->sampler_view->texture,
 394                       x, y, width, height, value);
 395 }
 396
 397 void mask_copy(struct vg_mask_layer *layer,
 398                VGint sx, VGint sy,
 399                VGint dx, VGint dy,
 400                VGint width, VGint height)
 401 {
 402    struct vg_context *ctx = vg_current_context();
 403    struct pipe_sampler_view *src = ctx->draw_buffer->alpha_mask_view;
 404    struct pipe_surface *surf;
 405
 406    /* get the destination surface */
 407    surf = ctx->pipe->screen->get_tex_surface(ctx->pipe->screen,
 408          layer->sampler_view->texture, 0, 0, 0, PIPE_BIND_RENDER_TARGET);
 409    if (surf && renderer_copy_begin(ctx->renderer, surf, VG_FALSE, src)) {
 410       renderer_copy(ctx->renderer,
 411             dx, dy, width, height,
 412             sx, sy, width, height);
 413       renderer_copy_end(ctx->renderer);
 414    }
 415
 416    pipe_surface_reference(&surf, NULL);
 417 }
 418
 419 static void mask_layer_render_to(struct vg_mask_layer *layer,
 420                                  struct path *path,
 421                                  VGbitfield paint_modes)
 422 {
 423 #if 0
 424    struct vg_context *ctx = vg_current_context();
 425    const VGfloat fill_color[4] = {1.f, 1.f, 1.f, 1.f};
 426    struct pipe_screen *screen = ctx->pipe->screen;
 427    struct pipe_surface *surface;
 428
 429    surface = screen->get_tex_surface(screen, layer->sampler_view->texture,  0, 0, 0,
 430                                      PIPE_BIND_RENDER_TARGET);
 431
 432    cso_save_framebuffer(ctx->cso_context);
 433    cso_save_fragment_shader(ctx->cso_context);
 434
 435    setup_mask_blend();
 436    setup_mask_fill(fill_color);
 437    setup_mask_framebuffer(surface, layer->width, layer->height);
 438
 439    if (paint_modes & VG_FILL_PATH) {
 440       struct matrix *mat = &ctx->state.vg.path_user_to_surface_matrix;
 441       path_fill(path, mat);
 442    }
 443
 444    if (paint_modes & VG_STROKE_PATH){
 445       path_stroke(path);
 446    }
 447
 448
 449    /* make sure rendering has completed */
 450    ctx->pipe->flush(ctx->pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
 451
 452    cso_restore_framebuffer(ctx->cso_context);
 453    cso_restore_fragment_shader(ctx->cso_context);
 454    ctx->state.dirty |= BLEND_DIRTY;
 455
 456    pipe_surface_reference(&surface, NULL);
 457 #endif
 458 }
 459
 460 void mask_render_to(struct path *path,
 461                     VGbitfield paint_modes,
 462                     VGMaskOperation operation)
 463 {
 464    struct vg_context *ctx = vg_current_context();
 465    struct st_framebuffer *fb_buffers = ctx->draw_buffer;
 466    struct vg_mask_layer *temp_layer;
 467    VGint width, height;
 468
 469    width = fb_buffers->alpha_mask_view->texture->width0;
 470    height = fb_buffers->alpha_mask_view->texture->width0;
 471
 472    temp_layer = mask_layer_create(width, height);
 473
 474    mask_layer_render_to(temp_layer, path, paint_modes);
 475
 476    mask_using_layer(temp_layer, 0, 0, width, height,
 477                     operation);
 478
 479    mask_layer_destroy(temp_layer);
 480 }
 481
 482 void mask_using_layer(struct vg_mask_layer *layer,
 483                       VGMaskOperation operation,
 484                       VGint x, VGint y,
 485                       VGint width, VGint height)
 486 {
 487    mask_using_texture(layer->sampler_view, operation,
 488                       x, y, width, height);
 489 }
 490
 491 VGint mask_layer_width(struct vg_mask_layer *layer)
 492 {
 493    return layer->width;
 494 }
 495
 496 VGint mask_layer_height(struct vg_mask_layer *layer)
 497 {
 498    return layer->height;
 499 }
 500
 501
 502 #endif
 503
 504 void mask_using_image(struct vg_image *image,
 505                       VGMaskOperation operation,
 506                       VGint x, VGint y,
 507                       VGint width, VGint height)
 508 {
 509    mask_using_texture(image->sampler_view, operation,
 510                       x, y, width, height);
 511 }
 512
 513 void mask_fill(VGint x, VGint y, VGint width, VGint height,
 514                VGfloat value)
 515 {
 516    struct vg_context *ctx = vg_current_context();
 517
 518 #if DEBUG_MASKS
 519    debug_printf("mask_fill(%d, %d, %d, %d) with  rgba(%f, %f, %f, %f)\n",
 520                 x, y, width, height,
 521                 0.0f, 0.0f, 0.0f, value);
 522 #endif
 523
 524    mask_resource_fill(ctx->draw_buffer->alpha_mask_view->texture,
 525                       x, y, width, height, value);
 526 }
 527
 528 VGint mask_bind_samplers(struct pipe_sampler_state **samplers,
 529                          struct pipe_sampler_view **sampler_views)
 530 {
 531    struct vg_context *ctx = vg_current_context();
 532
 533    if (ctx->state.vg.masking) {
 534       struct st_framebuffer *fb_buffers = ctx->draw_buffer;
 535
 536       samplers[1] = &ctx->mask.sampler;
 537       sampler_views[1] = fb_buffers->alpha_mask_view;
 538       return 1;
 539    } else
 540       return 0;
 541 }