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
  35 #include "pipe/p_context.h"
  36 #include "pipe/p_screen.h"
  37 #include "util/u_inlines.h"
  38 #include "util/u_format.h"
  39 #include "util/u_memory.h"
  40 #include "util/u_surface.h"
  41 #include "util/u_sampler.h"
  42
  43 struct vg_mask_layer {
  44    struct vg_object base;
  45
  46    VGint width;
  47    VGint height;
  48
  49    struct pipe_sampler_view *sampler_view;
  50 };
  51
  52 static INLINE VGboolean
  53 intersect_rectangles(VGint dwidth, VGint dheight,
  54                      VGint swidth, VGint sheight,
  55                      VGint tx, VGint ty,
  56                      VGint twidth, VGint theight,
  57                      VGint *offsets,
  58                      VGint *location)
  59 {
  60    if (tx + twidth <= 0 || tx >= dwidth)
  61       return VG_FALSE;
  62    if (ty + theight <= 0 || ty >= dheight)
  63       return VG_FALSE;
  64
  65    offsets[0] = 0;
  66    offsets[1] = 0;
  67    location[0] = tx;
  68    location[1] = ty;
  69
  70    if (tx < 0) {
  71       offsets[0] -= tx;
  72       location[0] = 0;
  73
  74       location[2] = MIN2(tx + swidth, MIN2(dwidth, tx + twidth));
  75       offsets[2] = location[2];
  76    } else {
  77       offsets[2] = MIN2(twidth, MIN2(dwidth - tx, swidth ));
  78       location[2] = offsets[2];
  79    }
  80
  81    if (ty < 0) {
  82       offsets[1] -= ty;
  83       location[1] = 0;
  84
  85       location[3] = MIN2(ty + sheight, MIN2(dheight, ty + theight));
  86       offsets[3] = location[3];
  87    } else {
  88       offsets[3] = MIN2(theight, MIN2(dheight - ty, sheight));
  89       location[3] = offsets[3];
  90    }
  91
  92    return VG_TRUE;
  93 }
  94
  95 #if DEBUG_MASKS
  96 static void read_alpha_mask(void * data, VGint dataStride,
  97                             VGImageFormat dataFormat,
  98                             VGint sx, VGint sy,
  99                             VGint width, VGint height)
 100 {
 101    struct vg_context *ctx = vg_current_context();
 102    struct pipe_context *pipe = ctx->pipe;
 103
 104    struct st_framebuffer *stfb = ctx->draw_buffer;
 105    struct st_renderbuffer *strb = stfb->alpha_mask;
 106
 107    VGfloat temp[VEGA_MAX_IMAGE_WIDTH][4];
 108    VGfloat *df = (VGfloat*)temp;
 109    VGint y = (stfb->height - sy) - 1, yStep = -1;
 110    VGint i;
 111    VGubyte *dst = (VGubyte *)data;
 112    VGint xoffset = 0, yoffset = 0;
 113
 114    if (sx < 0) {
 115       xoffset = -sx;
 116       xoffset *= _vega_size_for_format(dataFormat);
 117       width += sx;
 118       sx = 0;
 119    }
 120    if (sy < 0) {
 121       yoffset = -sy;
 122       height += sy;
 123       sy = 0;
 124       y = (stfb->height - sy) - 1;
 125       yoffset *= dataStride;
 126    }
 127
 128    {
 129       struct pipe_surface *surf;
 130
 131       surf = pipe->create_surface(pipe, strb->texture,  0, 0, 0,
 132                                   PIPE_BIND_TRANSFER_READ);
 133
 134       /* Do a row at a time to flip image data vertically */
 135       for (i = 0; i < height; i++) {
 136 #if 0
 137          debug_printf("%d-%d  == %d\n", sy, height, y);
 138 #endif
 139          pipe_get_tile_rgba(surf, sx, y, width, 1, df);
 140          y += yStep;
 141          _vega_pack_rgba_span_float(ctx, width, temp, dataFormat,
 142                                     dst + yoffset + xoffset);
 143          dst += dataStride;
 144       }
 145
 146       pipe_surface_reference(&surf, NULL);
 147    }
 148 }
 149
 150 void save_alpha_to_file(const char *filename)
 151 {
 152    struct vg_context *ctx = vg_current_context();
 153    struct st_framebuffer *stfb = ctx->draw_buffer;
 154    VGint *data;
 155    int i, j;
 156
 157    data = malloc(sizeof(int) * stfb->width * stfb->height);
 158    read_alpha_mask(data, stfb->width * sizeof(int),
 159                    VG_sRGBA_8888,
 160                    0, 0, stfb->width, stfb->height);
 161    fprintf(stderr, "/*---------- start */\n");
 162    fprintf(stderr, "const int image_width = %d;\n",
 163            stfb->width);
 164    fprintf(stderr, "const int image_height = %d;\n",
 165            stfb->height);
 166    fprintf(stderr, "const int image_data = {\n");
 167    for (i = 0; i < stfb->height; ++i) {
 168       for (j = 0; j < stfb->width; ++j) {
 169          int rgba = data[i * stfb->height + j];
 170          int argb = 0;
 171          argb = (rgba >> 8);
 172          argb |= ((rgba & 0xff) << 24);
 173          fprintf(stderr, "0x%x, ", argb);
 174       }
 175       fprintf(stderr, "\n");
 176    }
 177    fprintf(stderr, "};\n");
 178    fprintf(stderr, "/*---------- end */\n");
 179 }
 180 #endif
 181
 182 /* setup mask shader */
 183 static void *setup_mask_operation(VGMaskOperation operation)
 184 {
 185    struct vg_context *ctx = vg_current_context();
 186    void *shader = 0;
 187
 188    switch (operation) {
 189    case VG_UNION_MASK: {
 190       if (!ctx->mask.union_fs) {
 191          ctx->mask.union_fs = shader_create_from_text(ctx->pipe,
 192                                                       union_mask_asm,
 193                                                       200,
 194                                                       PIPE_SHADER_FRAGMENT);
 195       }
 196       shader = ctx->mask.union_fs->driver;
 197    }
 198       break;
 199    case VG_INTERSECT_MASK: {
 200       if (!ctx->mask.intersect_fs) {
 201          ctx->mask.intersect_fs = shader_create_from_text(ctx->pipe,
 202                                                           intersect_mask_asm,
 203                                                           200,
 204                                                           PIPE_SHADER_FRAGMENT);
 205       }
 206       shader = ctx->mask.intersect_fs->driver;
 207    }
 208       break;
 209    case VG_SUBTRACT_MASK: {
 210       if (!ctx->mask.subtract_fs) {
 211          ctx->mask.subtract_fs = shader_create_from_text(ctx->pipe,
 212                                                          subtract_mask_asm,
 213                                                          200,
 214                                                          PIPE_SHADER_FRAGMENT);
 215       }
 216       shader = ctx->mask.subtract_fs->driver;
 217    }
 218       break;
 219    case VG_SET_MASK: {
 220       if (!ctx->mask.set_fs) {
 221          ctx->mask.set_fs = shader_create_from_text(ctx->pipe,
 222                                                     set_mask_asm,
 223                                                     200,
 224                                                     PIPE_SHADER_FRAGMENT);
 225       }
 226       shader = ctx->mask.set_fs->driver;
 227    }
 228       break;
 229    default:
 230          assert(0);
 231       break;
 232    }
 233
 234    return shader;
 235 }
 236
 237 static void mask_resource_fill(struct pipe_resource *dst,
 238                                int x, int y, int width, int height,
 239                                VGfloat coverage)
 240 {
 241    struct vg_context *ctx = vg_current_context();
 242    VGfloat fs_consts[12] = {
 243       0.0f, 0.0f, 0.0f, 0.0f, /* not used */
 244       0.0f, 0.0f, 0.0f, 0.0f, /* not used */
 245       0.0f, 0.0f, 0.0f, coverage /* color */
 246    };
 247    void *fs;
 248
 249    if (x < 0) {
 250       width += x;
 251       x = 0;
 252    }
 253    if (y < 0) {
 254       height += y;
 255       y = 0;
 256    }
 257
 258    fs = shaders_cache_fill(ctx->sc, VEGA_SOLID_FILL_SHADER);
 259
 260    if (renderer_filter_begin(ctx->renderer, dst, VG_FALSE, ~0,
 261             NULL, NULL, 0, fs, (const void *) fs_consts, sizeof(fs_consts))) {
 262       renderer_filter(ctx->renderer, x, y, width, height, 0, 0, 0, 0);
 263       renderer_filter_end(ctx->renderer);
 264    }
 265
 266 #if DEBUG_MASKS
 267    save_alpha_to_file(0);
 268 #endif
 269 }
 270
 271
 272 static void mask_using_texture(struct pipe_sampler_view *sampler_view,
 273                                VGboolean is_layer,
 274                                VGMaskOperation operation,
 275                                VGint x, VGint y,
 276                                VGint width, VGint height)
 277 {
 278    struct vg_context *ctx = vg_current_context();
 279    struct pipe_sampler_view *dst_view = vg_get_surface_mask(ctx);
 280    struct pipe_resource *dst = dst_view->texture;
 281    struct pipe_resource *texture = sampler_view->texture;
 282    const struct pipe_sampler_state *samplers[2];
 283    struct pipe_sampler_view *views[2];
 284    struct pipe_sampler_state sampler;
 285    VGint offsets[4], loc[4];
 286    const VGfloat ones[4] = {1.f, 1.f, 1.f, 1.f};
 287    void *fs;
 288
 289    if (!intersect_rectangles(dst->width0, dst->height0,
 290                              texture->width0, texture->height0,
 291                              x, y, width, height,
 292                              offsets, loc))
 293       return;
 294 #if 0
 295    debug_printf("Offset = [%d, %d, %d, %d]\n", offsets[0],
 296                 offsets[1], offsets[2], offsets[3]);
 297    debug_printf("Locati = [%d, %d, %d, %d]\n", loc[0],
 298                 loc[1], loc[2], loc[3]);
 299 #endif
 300
 301
 302    sampler = ctx->mask.sampler;
 303    sampler.normalized_coords = 1;
 304    samplers[0] = &sampler;
 305    views[0] = sampler_view;
 306
 307    /* prepare our blend surface */
 308    samplers[1] = &ctx->mask.sampler;
 309    views[1] = vg_prepare_blend_surface_from_mask(ctx);
 310
 311    fs = setup_mask_operation(operation);
 312
 313    if (renderer_filter_begin(ctx->renderer, dst, VG_FALSE,
 314             ~0, samplers, views, 2, fs, (const void *) ones, sizeof(ones))) {
 315       /* layer should be flipped when used as a texture */
 316       if (is_layer) {
 317          offsets[1] += offsets[3];
 318          offsets[3] = -offsets[3];
 319       }
 320       renderer_filter(ctx->renderer,
 321             loc[0], loc[1], loc[2], loc[3],
 322             offsets[0], offsets[1], offsets[2], offsets[3]);
 323       renderer_filter_end(ctx->renderer);
 324    }
 325 }
 326
 327
 328 #ifdef OPENVG_VERSION_1_1
 329
 330 struct vg_mask_layer * mask_layer_create(VGint width, VGint height)
 331 {
 332    struct vg_context *ctx = vg_current_context();
 333    struct vg_mask_layer *mask = 0;
 334
 335    mask = CALLOC_STRUCT(vg_mask_layer);
 336    vg_init_object(&mask->base, ctx, VG_OBJECT_MASK);
 337    mask->width = width;
 338    mask->height = height;
 339
 340    {
 341       struct pipe_resource pt;
 342       struct pipe_context *pipe = ctx->pipe;
 343       struct pipe_screen *screen = ctx->pipe->screen;
 344       struct pipe_sampler_view view_templ;
 345       struct pipe_sampler_view *view = NULL;
 346       struct pipe_resource *texture;
 347
 348       memset(&pt, 0, sizeof(pt));
 349       pt.target = PIPE_TEXTURE_2D;
 350       pt.format = PIPE_FORMAT_B8G8R8A8_UNORM;
 351       pt.last_level = 0;
 352       pt.width0 = width;
 353       pt.height0 = height;
 354       pt.depth0 = 1;
 355       pt.array_size = 1;
 356       pt.bind = PIPE_BIND_SAMPLER_VIEW;
 357
 358       texture = screen->resource_create(screen, &pt);
 359
 360       if (texture) {
 361          u_sampler_view_default_template(&view_templ, texture, texture->format);
 362          view = pipe->create_sampler_view(pipe, texture, &view_templ);
 363       }
 364       pipe_resource_reference(&texture, NULL);
 365       mask->sampler_view = view;
 366    }
 367
 368    vg_context_add_object(ctx, &mask->base);
 369
 370    return mask;
 371 }
 372
 373 void mask_layer_destroy(struct vg_mask_layer *layer)
 374 {
 375    struct vg_context *ctx = vg_current_context();
 376
 377    vg_context_remove_object(ctx, &layer->base);
 378    pipe_sampler_view_reference(&layer->sampler_view, NULL);
 379    FREE(layer);
 380 }
 381
 382 void mask_layer_fill(struct vg_mask_layer *layer,
 383                      VGint x, VGint y,
 384                      VGint width, VGint height,
 385                      VGfloat value)
 386 {
 387    VGfloat alpha_color[4] = {0, 0, 0, 0};
 388
 389    alpha_color[3] = value;
 390
 391    mask_resource_fill(layer->sampler_view->texture,
 392                       x, y, width, height, value);
 393 }
 394
 395 void mask_copy(struct vg_mask_layer *layer,
 396                VGint sx, VGint sy,
 397                VGint dx, VGint dy,
 398                VGint width, VGint height)
 399 {
 400    struct vg_context *ctx = vg_current_context();
 401    struct pipe_sampler_view *src = vg_get_surface_mask(ctx);
 402    struct pipe_surface *surf, surf_tmpl;
 403
 404    /* get the destination surface */
 405    u_surface_default_template(&surf_tmpl, layer->sampler_view->texture,
 406                               PIPE_BIND_RENDER_TARGET);
 407    surf = ctx->pipe->create_surface(ctx->pipe, layer->sampler_view->texture,
 408                                     &surf_tmpl);
 409    if (surf && renderer_copy_begin(ctx->renderer, surf, VG_FALSE, src)) {
 410       /* layer should be flipped when used as a texture */
 411       sy += height;
 412       height = -height;
 413
 414       renderer_copy(ctx->renderer,
 415             dx, dy, width, height,
 416             sx, sy, width, height);
 417       renderer_copy_end(ctx->renderer);
 418    }
 419
 420    pipe_surface_reference(&surf, NULL);
 421 }
 422
 423 static void mask_layer_render_to(struct vg_mask_layer *layer,
 424                                  struct path *path,
 425                                  VGbitfield paint_modes)
 426 {
 427    struct vg_context *ctx = vg_current_context();
 428    struct pipe_context *pipe = ctx->pipe;
 429    struct pipe_sampler_view *view = vg_get_surface_mask(ctx);
 430    struct matrix *mat = &ctx->state.vg.path_user_to_surface_matrix;
 431    struct pipe_surface *surf, surf_tmpl;
 432    u_surface_default_template(&surf_tmpl, view->texture,
 433                               PIPE_BIND_RENDER_TARGET);
 434    surf = pipe->create_surface(pipe, view->texture, &surf_tmpl);
 435
 436    renderer_validate_for_mask_rendering(ctx->renderer, surf, mat);
 437
 438    if (paint_modes & VG_FILL_PATH) {
 439       path_fill(path);
 440    }
 441
 442    if (paint_modes & VG_STROKE_PATH){
 443       path_stroke(path);
 444    }
 445
 446    pipe_surface_reference(&surf, NULL);
 447 }
 448
 449 void mask_render_to(struct path *path,
 450                     VGbitfield paint_modes,
 451                     VGMaskOperation operation)
 452 {
 453    struct vg_context *ctx = vg_current_context();
 454    struct st_framebuffer *stfb = ctx->draw_buffer;
 455    struct vg_mask_layer *temp_layer;
 456    VGint width, height;
 457
 458    width = stfb->width;
 459    height = stfb->height;
 460
 461    temp_layer = mask_layer_create(width, height);
 462    mask_layer_fill(temp_layer, 0, 0, width, height, 0.0f);
 463
 464    mask_layer_render_to(temp_layer, path, paint_modes);
 465
 466    mask_using_layer(temp_layer, operation, 0, 0, width, height);
 467
 468    mask_layer_destroy(temp_layer);
 469 }
 470
 471 void mask_using_layer(struct vg_mask_layer *layer,
 472                       VGMaskOperation operation,
 473                       VGint x, VGint y,
 474                       VGint width, VGint height)
 475 {
 476    mask_using_texture(layer->sampler_view, VG_TRUE, operation,
 477                       x, y, width, height);
 478 }
 479
 480 VGint mask_layer_width(struct vg_mask_layer *layer)
 481 {
 482    return layer->width;
 483 }
 484
 485 VGint mask_layer_height(struct vg_mask_layer *layer)
 486 {
 487    return layer->height;
 488 }
 489
 490
 491 #endif
 492
 493 void mask_using_image(struct vg_image *image,
 494                       VGMaskOperation operation,
 495                       VGint x, VGint y,
 496                       VGint width, VGint height)
 497 {
 498    mask_using_texture(image->sampler_view, VG_FALSE, operation,
 499                       x, y, width, height);
 500 }
 501
 502 void mask_fill(VGint x, VGint y, VGint width, VGint height,
 503                VGfloat value)
 504 {
 505    struct vg_context *ctx = vg_current_context();
 506    struct pipe_sampler_view *view = vg_get_surface_mask(ctx);
 507
 508 #if DEBUG_MASKS
 509    debug_printf("mask_fill(%d, %d, %d, %d) with  rgba(%f, %f, %f, %f)\n",
 510                 x, y, width, height,
 511                 0.0f, 0.0f, 0.0f, value);
 512 #endif
 513
 514    mask_resource_fill(view->texture, x, y, width, height, value);
 515 }
 516
 517 VGint mask_bind_samplers(struct pipe_sampler_state **samplers,
 518                          struct pipe_sampler_view **sampler_views)
 519 {
 520    struct vg_context *ctx = vg_current_context();
 521
 522    if (ctx->state.vg.masking) {
 523       samplers[1] = &ctx->mask.sampler;
 524       sampler_views[1] = vg_get_surface_mask(ctx);
 525       return 1;
 526    } else
 527       return 0;
 528 }