src/gallium/state_trackers/vega/vg_context.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 "vg_context.h"
  28
  29 #include "paint.h"
  30 #include "renderer.h"
  31 #include "shaders_cache.h"
  32 #include "shader.h"
  33 #include "vg_manager.h"
  34 #include "api.h"
  35 #include "mask.h"
  36 #include "handle.h"
  37
  38 #include "pipe/p_context.h"
  39 #include "util/u_inlines.h"
  40
  41 #include "cso_cache/cso_context.h"
  42
  43 #include "util/u_memory.h"
  44 #include "util/u_blit.h"
  45 #include "util/u_sampler.h"
  46 #include "util/u_surface.h"
  47 #include "util/u_format.h"
  48
  49 struct vg_context *_vg_context = 0;
  50
  51 struct vg_context * vg_current_context(void)
  52 {
  53    return _vg_context;
  54 }
  55
  56 /**
  57  * A depth/stencil rb will be needed regardless of what the visual says.
  58  */
  59 static boolean
  60 choose_depth_stencil_format(struct vg_context *ctx)
  61 {
  62    struct pipe_screen *screen = ctx->pipe->screen;
  63    enum pipe_format formats[] = {
  64       PIPE_FORMAT_Z24_UNORM_S8_UINT,
  65       PIPE_FORMAT_S8_UINT_Z24_UNORM,
  66       PIPE_FORMAT_NONE
  67    };
  68    enum pipe_format *fmt;
  69
  70    for (fmt = formats; *fmt != PIPE_FORMAT_NONE; fmt++) {
  71       if (screen->is_format_supported(screen, *fmt,
  72                PIPE_TEXTURE_2D, 0, PIPE_BIND_DEPTH_STENCIL))
  73          break;
  74    }
  75
  76    ctx->ds_format = *fmt;
  77
  78    return (ctx->ds_format != PIPE_FORMAT_NONE);
  79 }
  80
  81 void vg_set_current_context(struct vg_context *ctx)
  82 {
  83    _vg_context = ctx;
  84    api_make_dispatch_current((ctx) ? ctx->dispatch : NULL);
  85 }
  86
  87 struct vg_context * vg_create_context(struct pipe_context *pipe,
  88                                       const void *visual,
  89                                       struct vg_context *share)
  90 {
  91    struct vg_context *ctx;
  92
  93    ctx = CALLOC_STRUCT(vg_context);
  94
  95    ctx->pipe = pipe;
  96    if (!choose_depth_stencil_format(ctx)) {
  97       FREE(ctx);
  98       return NULL;
  99    }
 100
 101    ctx->dispatch = api_create_dispatch();
 102
 103    vg_init_state(&ctx->state.vg);
 104    ctx->state.dirty = ALL_DIRTY;
 105
 106    ctx->cso_context = cso_create_context(pipe);
 107
 108    ctx->default_paint = paint_create(ctx);
 109    ctx->state.vg.stroke_paint = ctx->default_paint;
 110    ctx->state.vg.fill_paint = ctx->default_paint;
 111
 112
 113    ctx->mask.sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 114    ctx->mask.sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 115    ctx->mask.sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 116    ctx->mask.sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
 117    ctx->mask.sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
 118    ctx->mask.sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
 119    ctx->mask.sampler.normalized_coords = 0;
 120
 121    ctx->blend_sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 122    ctx->blend_sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 123    ctx->blend_sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 124    ctx->blend_sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
 125    ctx->blend_sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
 126    ctx->blend_sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
 127    ctx->blend_sampler.normalized_coords = 0;
 128
 129    vg_set_error(ctx, VG_NO_ERROR);
 130
 131    ctx->owned_objects[VG_OBJECT_PAINT] = cso_hash_create();
 132    ctx->owned_objects[VG_OBJECT_IMAGE] = cso_hash_create();
 133    ctx->owned_objects[VG_OBJECT_MASK] = cso_hash_create();
 134    ctx->owned_objects[VG_OBJECT_FONT] = cso_hash_create();
 135    ctx->owned_objects[VG_OBJECT_PATH] = cso_hash_create();
 136
 137    ctx->renderer = renderer_create(ctx);
 138    ctx->sc = shaders_cache_create(ctx);
 139    ctx->shader = shader_create(ctx);
 140
 141    ctx->blit = util_create_blit(ctx->pipe, ctx->cso_context);
 142
 143    return ctx;
 144 }
 145
 146 void vg_destroy_context(struct vg_context *ctx)
 147 {
 148    struct pipe_resource **cbuf = &ctx->mask.cbuf;
 149
 150    util_destroy_blit(ctx->blit);
 151    renderer_destroy(ctx->renderer);
 152    shaders_cache_destroy(ctx->sc);
 153    shader_destroy(ctx->shader);
 154    paint_destroy(ctx->default_paint);
 155
 156    if (*cbuf)
 157       pipe_resource_reference(cbuf, NULL);
 158
 159    if (ctx->mask.union_fs)
 160       vg_shader_destroy(ctx, ctx->mask.union_fs);
 161    if (ctx->mask.intersect_fs)
 162       vg_shader_destroy(ctx, ctx->mask.intersect_fs);
 163    if (ctx->mask.subtract_fs)
 164       vg_shader_destroy(ctx, ctx->mask.subtract_fs);
 165    if (ctx->mask.set_fs)
 166       vg_shader_destroy(ctx, ctx->mask.set_fs);
 167
 168    cso_release_all(ctx->cso_context);
 169    cso_destroy_context(ctx->cso_context);
 170
 171    cso_hash_delete(ctx->owned_objects[VG_OBJECT_PAINT]);
 172    cso_hash_delete(ctx->owned_objects[VG_OBJECT_IMAGE]);
 173    cso_hash_delete(ctx->owned_objects[VG_OBJECT_MASK]);
 174    cso_hash_delete(ctx->owned_objects[VG_OBJECT_FONT]);
 175    cso_hash_delete(ctx->owned_objects[VG_OBJECT_PATH]);
 176
 177    api_destroy_dispatch(ctx->dispatch);
 178
 179    FREE(ctx);
 180 }
 181
 182 void vg_init_object(struct vg_object *obj, struct vg_context *ctx, enum vg_object_type type)
 183 {
 184    obj->type = type;
 185    obj->ctx = ctx;
 186    obj->handle = create_handle(obj);
 187 }
 188
 189 /** free object resources, but not the object itself */
 190 void vg_free_object(struct vg_object *obj)
 191 {
 192    obj->type = 0;
 193    obj->ctx = NULL;
 194    destroy_handle(obj->handle);
 195 }
 196
 197 VGboolean vg_context_is_object_valid(struct vg_context *ctx,
 198                                 enum vg_object_type type,
 199                                 VGHandle handle)
 200 {
 201     if (ctx) {
 202        struct cso_hash *hash = ctx->owned_objects[type];
 203        if (!hash)
 204           return VG_FALSE;
 205        return cso_hash_contains(hash, (unsigned) handle);
 206     }
 207     return VG_FALSE;
 208 }
 209
 210 void vg_context_add_object(struct vg_context *ctx,
 211                            struct vg_object *obj)
 212 {
 213     if (ctx) {
 214        struct cso_hash *hash = ctx->owned_objects[obj->type];
 215        if (!hash)
 216           return;
 217        cso_hash_insert(hash, (unsigned) obj->handle, obj);
 218     }
 219 }
 220
 221 void vg_context_remove_object(struct vg_context *ctx,
 222                               struct vg_object *obj)
 223 {
 224    if (ctx) {
 225       struct cso_hash *hash = ctx->owned_objects[obj->type];
 226       if (!hash)
 227          return;
 228       cso_hash_take(hash, (unsigned) obj->handle);
 229    }
 230 }
 231
 232 static struct pipe_resource *
 233 create_texture(struct pipe_context *pipe, enum pipe_format format,
 234                     VGint width, VGint height)
 235 {
 236    struct pipe_resource templ;
 237
 238    memset(&templ, 0, sizeof(templ));
 239
 240    if (format != PIPE_FORMAT_NONE) {
 241       templ.format = format;
 242    }
 243    else {
 244       templ.format = PIPE_FORMAT_B8G8R8A8_UNORM;
 245    }
 246
 247    templ.target = PIPE_TEXTURE_2D;
 248    templ.width0 = width;
 249    templ.height0 = height;
 250    templ.depth0 = 1;
 251    templ.array_size = 1;
 252    templ.last_level = 0;
 253
 254    if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 1)) {
 255       templ.bind = PIPE_BIND_DEPTH_STENCIL;
 256    } else {
 257       templ.bind = (PIPE_BIND_DISPLAY_TARGET |
 258                     PIPE_BIND_RENDER_TARGET |
 259                     PIPE_BIND_SAMPLER_VIEW);
 260    }
 261
 262    return pipe->screen->resource_create(pipe->screen, &templ);
 263 }
 264
 265 static struct pipe_sampler_view *
 266 create_tex_and_view(struct pipe_context *pipe, enum pipe_format format,
 267                     VGint width, VGint height)
 268 {
 269    struct pipe_resource *texture;
 270    struct pipe_sampler_view view_templ;
 271    struct pipe_sampler_view *view;
 272
 273    texture = create_texture(pipe, format, width, height);
 274
 275    if (!texture)
 276       return NULL;
 277
 278    u_sampler_view_default_template(&view_templ, texture, texture->format);
 279    view = pipe->create_sampler_view(pipe, texture, &view_templ);
 280    /* want the texture to go away if the view is freed */
 281    pipe_resource_reference(&texture, NULL);
 282
 283    return view;
 284 }
 285
 286 static void
 287 vg_context_update_surface_mask_view(struct vg_context *ctx,
 288                                     uint width, uint height)
 289 {
 290    struct st_framebuffer *stfb = ctx->draw_buffer;
 291    struct pipe_sampler_view *old_sampler_view = stfb->surface_mask_view;
 292    struct pipe_context *pipe = ctx->pipe;
 293
 294    if (old_sampler_view &&
 295        old_sampler_view->texture->width0 == width &&
 296        old_sampler_view->texture->height0 == height)
 297       return;
 298
 299    /*
 300      we use PIPE_FORMAT_B8G8R8A8_UNORM because we want to render to
 301      this texture and use it as a sampler, so while this wastes some
 302      space it makes both of those a lot simpler
 303    */
 304    stfb->surface_mask_view = create_tex_and_view(pipe,
 305          PIPE_FORMAT_B8G8R8A8_UNORM, width, height);
 306
 307    if (!stfb->surface_mask_view) {
 308       if (old_sampler_view)
 309          pipe_sampler_view_reference(&old_sampler_view, NULL);
 310       return;
 311    }
 312
 313    /* XXX could this call be avoided? */
 314    vg_validate_state(ctx);
 315
 316    /* alpha mask starts with 1.f alpha */
 317    mask_fill(0, 0, width, height, 1.f);
 318
 319    /* if we had an old surface copy it over */
 320    if (old_sampler_view) {
 321       struct pipe_box src_box;
 322       u_box_origin_2d(MIN2(old_sampler_view->texture->width0,
 323                            stfb->surface_mask_view->texture->width0),
 324                       MIN2(old_sampler_view->texture->height0,
 325                            stfb->surface_mask_view->texture->height0),
 326                       &src_box);
 327
 328       pipe->resource_copy_region(pipe,
 329                                  stfb->surface_mask_view->texture,
 330                                  0, 0, 0, 0,
 331                                  old_sampler_view->texture,
 332                                  0, &src_box);
 333    }
 334
 335    /* Free the old texture
 336     */
 337    if (old_sampler_view)
 338       pipe_sampler_view_reference(&old_sampler_view, NULL);
 339 }
 340
 341 static void
 342 vg_context_update_blend_texture_view(struct vg_context *ctx,
 343                                      uint width, uint height)
 344 {
 345    struct pipe_context *pipe = ctx->pipe;
 346    struct st_framebuffer *stfb = ctx->draw_buffer;
 347    struct pipe_sampler_view *old = stfb->blend_texture_view;
 348
 349    if (old &&
 350        old->texture->width0 == width &&
 351        old->texture->height0 == height)
 352       return;
 353
 354    stfb->blend_texture_view = create_tex_and_view(pipe,
 355          PIPE_FORMAT_B8G8R8A8_UNORM, width, height);
 356
 357    pipe_sampler_view_reference(&old, NULL);
 358 }
 359
 360 static boolean
 361 vg_context_update_depth_stencil_rb(struct vg_context * ctx,
 362                                    uint width, uint height)
 363 {
 364    struct st_renderbuffer *dsrb = ctx->draw_buffer->dsrb;
 365    struct pipe_context *pipe = ctx->pipe;
 366    struct pipe_surface surf_tmpl;
 367
 368    if ((dsrb->width == width && dsrb->height == height) && dsrb->texture)
 369       return FALSE;
 370
 371    /* unreference existing ones */
 372    pipe_surface_reference(&dsrb->surface, NULL);
 373    pipe_resource_reference(&dsrb->texture, NULL);
 374    dsrb->width = dsrb->height = 0;
 375
 376    dsrb->texture = create_texture(pipe, dsrb->format, width, height);
 377    if (!dsrb->texture)
 378       return TRUE;
 379
 380    memset(&surf_tmpl, 0, sizeof(surf_tmpl));
 381    u_surface_default_template(&surf_tmpl, dsrb->texture,
 382                               PIPE_BIND_DEPTH_STENCIL);
 383    dsrb->surface = pipe->create_surface(pipe,
 384                                         dsrb->texture,
 385                                         &surf_tmpl);
 386    if (!dsrb->surface) {
 387       pipe_resource_reference(&dsrb->texture, NULL);
 388       return TRUE;
 389    }
 390
 391    dsrb->width = width;
 392    dsrb->height = height;
 393
 394    assert(dsrb->surface->width == width);
 395    assert(dsrb->surface->height == height);
 396
 397    return TRUE;
 398 }
 399
 400 void vg_validate_state(struct vg_context *ctx)
 401 {
 402    struct st_framebuffer *stfb = ctx->draw_buffer;
 403
 404    vg_manager_validate_framebuffer(ctx);
 405
 406    if (vg_context_update_depth_stencil_rb(ctx, stfb->width, stfb->height))
 407       ctx->state.dirty |= DEPTH_STENCIL_DIRTY;
 408
 409    /* blend state depends on fb format and paint color */
 410    if ((ctx->state.dirty & FRAMEBUFFER_DIRTY) ||
 411        (ctx->state.dirty & PAINT_DIRTY))
 412       ctx->state.dirty |= BLEND_DIRTY;
 413
 414    renderer_validate(ctx->renderer, ctx->state.dirty,
 415          ctx->draw_buffer, &ctx->state.vg);
 416
 417    ctx->state.dirty = 0;
 418
 419    shader_set_masking(ctx->shader, ctx->state.vg.masking);
 420    shader_set_image_mode(ctx->shader, ctx->state.vg.image_mode);
 421    shader_set_color_transform(ctx->shader, ctx->state.vg.color_transform);
 422 }
 423
 424 VGboolean vg_object_is_valid(VGHandle object, enum vg_object_type type)
 425 {
 426    struct vg_object *obj = handle_to_object(object);
 427    if (obj && is_aligned(obj) && obj->type == type)
 428       return VG_TRUE;
 429    else
 430       return VG_FALSE;
 431 }
 432
 433 void vg_set_error(struct vg_context *ctx,
 434                   VGErrorCode code)
 435 {
 436    /*vgGetError returns the oldest error code provided by
 437     * an API call on the current context since the previous
 438     * call to vgGetError on that context (or since the creation
 439     of the context).*/
 440    if (ctx->_error == VG_NO_ERROR)
 441       ctx->_error = code;
 442 }
 443
 444 static void vg_prepare_blend_texture(struct vg_context *ctx,
 445                                      struct pipe_sampler_view *src)
 446 {
 447    struct st_framebuffer *stfb = ctx->draw_buffer;
 448    struct pipe_surface *surf;
 449    struct pipe_surface surf_tmpl;
 450
 451    vg_context_update_blend_texture_view(ctx, stfb->width, stfb->height);
 452
 453    memset(&surf_tmpl, 0, sizeof(surf_tmpl));
 454    u_surface_default_template(&surf_tmpl, stfb->blend_texture_view->texture,
 455                               PIPE_BIND_RENDER_TARGET);
 456    surf = ctx->pipe->create_surface(ctx->pipe,
 457                                     stfb->blend_texture_view->texture,
 458                                     &surf_tmpl);
 459    if (surf) {
 460       util_blit_pixels_tex(ctx->blit,
 461                            src, 0, 0, stfb->width, stfb->height,
 462                            surf, 0, 0, stfb->width, stfb->height,
 463                            0.0, PIPE_TEX_MIPFILTER_NEAREST);
 464
 465       pipe_surface_reference(&surf, NULL);
 466    }
 467 }
 468
 469 struct pipe_sampler_view *vg_prepare_blend_surface(struct vg_context *ctx)
 470 {
 471    struct pipe_context *pipe = ctx->pipe;
 472    struct pipe_sampler_view *view;
 473    struct pipe_sampler_view view_templ;
 474    struct st_framebuffer *stfb = ctx->draw_buffer;
 475    struct st_renderbuffer *strb = stfb->strb;
 476
 477    vg_validate_state(ctx);
 478
 479    u_sampler_view_default_template(&view_templ, strb->texture, strb->texture->format);
 480    view = pipe->create_sampler_view(pipe, strb->texture, &view_templ);
 481
 482    vg_prepare_blend_texture(ctx, view);
 483
 484    pipe_sampler_view_reference(&view, NULL);
 485
 486    return stfb->blend_texture_view;
 487 }
 488
 489
 490 struct pipe_sampler_view *vg_prepare_blend_surface_from_mask(struct vg_context *ctx)
 491 {
 492    struct st_framebuffer *stfb = ctx->draw_buffer;
 493
 494    vg_validate_state(ctx);
 495
 496    vg_context_update_surface_mask_view(ctx, stfb->width, stfb->height);
 497    vg_prepare_blend_texture(ctx, stfb->surface_mask_view);
 498
 499    return stfb->blend_texture_view;
 500 }
 501
 502 struct pipe_sampler_view *vg_get_surface_mask(struct vg_context *ctx)
 503 {
 504    struct st_framebuffer *stfb = ctx->draw_buffer;
 505
 506    vg_context_update_surface_mask_view(ctx, stfb->width, stfb->height);
 507
 508    return stfb->surface_mask_view;
 509 }
 510
 511 /**
 512  * A transformation from window coordinates to paint coordinates.
 513  */
 514 VGboolean vg_get_paint_matrix(struct vg_context *ctx,
 515                               const struct matrix *paint_to_user,
 516                               const struct matrix *user_to_surface,
 517                               struct matrix *mat)
 518 {
 519    struct matrix tmp;
 520
 521    /* get user-to-paint matrix */
 522    memcpy(mat, paint_to_user, sizeof(*paint_to_user));
 523    if (!matrix_invert(mat))
 524       return VG_FALSE;
 525
 526    /* get surface-to-user matrix */
 527    memcpy(&tmp, user_to_surface, sizeof(*user_to_surface));
 528    if (!matrix_invert(&tmp))
 529       return VG_FALSE;
 530
 531    matrix_mult(mat, &tmp);
 532
 533    return VG_TRUE;
 534 }