workbench/libs/mesa/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_USCALED,
  65       PIPE_FORMAT_S8_USCALED_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 object)
 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)(long)object);
 206     }
 207     return VG_FALSE;
 208 }
 209
 210 void vg_context_add_object(struct vg_context *ctx,
 211                            enum vg_object_type type,
 212                            void *ptr)
 213 {
 214     if (ctx) {
 215        struct cso_hash *hash = ctx->owned_objects[type];
 216        if (!hash)
 217           return;
 218        cso_hash_insert(hash, (unsigned)(long)ptr, ptr);
 219     }
 220 }
 221
 222 void vg_context_remove_object(struct vg_context *ctx,
 223                               enum vg_object_type type,
 224                               void *ptr)
 225 {
 226    if (ctx) {
 227       struct cso_hash *hash = ctx->owned_objects[type];
 228       if (!hash)
 229          return;
 230       cso_hash_take(hash, (unsigned)(long)ptr);
 231    }
 232 }
 233
 234 static struct pipe_resource *
 235 create_texture(struct pipe_context *pipe, enum pipe_format format,
 236                     VGint width, VGint height)
 237 {
 238    struct pipe_resource templ;
 239
 240    memset(&templ, 0, sizeof(templ));
 241
 242    if (format != PIPE_FORMAT_NONE) {
 243       templ.format = format;
 244    }
 245    else {
 246       templ.format = PIPE_FORMAT_B8G8R8A8_UNORM;
 247    }
 248
 249    templ.target = PIPE_TEXTURE_2D;
 250    templ.width0 = width;
 251    templ.height0 = height;
 252    templ.depth0 = 1;
 253    templ.array_size = 1;
 254    templ.last_level = 0;
 255
 256    if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 1)) {
 257       templ.bind = PIPE_BIND_DEPTH_STENCIL;
 258    } else {
 259       templ.bind = (PIPE_BIND_DISPLAY_TARGET |
 260                     PIPE_BIND_RENDER_TARGET |
 261                     PIPE_BIND_SAMPLER_VIEW);
 262    }
 263
 264    return pipe->screen->resource_create(pipe->screen, &templ);
 265 }
 266
 267 static struct pipe_sampler_view *
 268 create_tex_and_view(struct pipe_context *pipe, enum pipe_format format,
 269                     VGint width, VGint height)
 270 {
 271    struct pipe_resource *texture;
 272    struct pipe_sampler_view view_templ;
 273    struct pipe_sampler_view *view;
 274
 275    texture = create_texture(pipe, format, width, height);
 276
 277    if (!texture)
 278       return NULL;
 279
 280    u_sampler_view_default_template(&view_templ, texture, texture->format);
 281    view = pipe->create_sampler_view(pipe, texture, &view_templ);
 282    /* want the texture to go away if the view is freed */
 283    pipe_resource_reference(&texture, NULL);
 284
 285    return view;
 286 }
 287
 288 static void
 289 vg_context_update_surface_mask_view(struct vg_context *ctx,
 290                                     uint width, uint height)
 291 {
 292    struct st_framebuffer *stfb = ctx->draw_buffer;
 293    struct pipe_sampler_view *old_sampler_view = stfb->surface_mask_view;
 294    struct pipe_context *pipe = ctx->pipe;
 295
 296    if (old_sampler_view &&
 297        old_sampler_view->texture->width0 == width &&
 298        old_sampler_view->texture->height0 == height)
 299       return;
 300
 301    /*
 302      we use PIPE_FORMAT_B8G8R8A8_UNORM because we want to render to
 303      this texture and use it as a sampler, so while this wastes some
 304      space it makes both of those a lot simpler
 305    */
 306    stfb->surface_mask_view = create_tex_and_view(pipe,
 307          PIPE_FORMAT_B8G8R8A8_UNORM, width, height);
 308
 309    if (!stfb->surface_mask_view) {
 310       if (old_sampler_view)
 311          pipe_sampler_view_reference(&old_sampler_view, NULL);
 312       return;
 313    }
 314
 315    /* XXX could this call be avoided? */
 316    vg_validate_state(ctx);
 317
 318    /* alpha mask starts with 1.f alpha */
 319    mask_fill(0, 0, width, height, 1.f);
 320
 321    /* if we had an old surface copy it over */
 322    if (old_sampler_view) {
 323       struct pipe_box src_box;
 324       u_box_origin_2d(MIN2(old_sampler_view->texture->width0,
 325                            stfb->surface_mask_view->texture->width0),
 326                       MIN2(old_sampler_view->texture->height0,
 327                            stfb->surface_mask_view->texture->height0),
 328                       &src_box);
 329
 330       pipe->resource_copy_region(pipe,
 331                                  stfb->surface_mask_view->texture,
 332                                  0, 0, 0, 0,
 333                                  old_sampler_view->texture,
 334                                  0, &src_box);
 335    }
 336
 337    /* Free the old texture
 338     */
 339    if (old_sampler_view)
 340       pipe_sampler_view_reference(&old_sampler_view, NULL);
 341 }
 342
 343 static void
 344 vg_context_update_blend_texture_view(struct vg_context *ctx,
 345                                      uint width, uint height)
 346 {
 347    struct pipe_context *pipe = ctx->pipe;
 348    struct st_framebuffer *stfb = ctx->draw_buffer;
 349    struct pipe_sampler_view *old = stfb->blend_texture_view;
 350
 351    if (old &&
 352        old->texture->width0 == width &&
 353        old->texture->height0 == height)
 354       return;
 355
 356    stfb->blend_texture_view = create_tex_and_view(pipe,
 357          PIPE_FORMAT_B8G8R8A8_UNORM, width, height);
 358
 359    pipe_sampler_view_reference(&old, NULL);
 360 }
 361
 362 static boolean
 363 vg_context_update_depth_stencil_rb(struct vg_context * ctx,
 364                                    uint width, uint height)
 365 {
 366    struct st_renderbuffer *dsrb = ctx->draw_buffer->dsrb;
 367    struct pipe_context *pipe = ctx->pipe;
 368    struct pipe_surface surf_tmpl;
 369
 370    if ((dsrb->width == width && dsrb->height == height) && dsrb->texture)
 371       return FALSE;
 372
 373    /* unreference existing ones */
 374    pipe_surface_reference(&dsrb->surface, NULL);
 375    pipe_resource_reference(&dsrb->texture, NULL);
 376    dsrb->width = dsrb->height = 0;
 377
 378    dsrb->texture = create_texture(pipe, dsrb->format, width, height);
 379    if (!dsrb->texture)
 380       return TRUE;
 381
 382    memset(&surf_tmpl, 0, sizeof(surf_tmpl));
 383    u_surface_default_template(&surf_tmpl, dsrb->texture,
 384                               PIPE_BIND_DEPTH_STENCIL);
 385    dsrb->surface = pipe->create_surface(pipe,
 386                                         dsrb->texture,
 387                                         &surf_tmpl);
 388    if (!dsrb->surface) {
 389       pipe_resource_reference(&dsrb->texture, NULL);
 390       return TRUE;
 391    }
 392
 393    dsrb->width = width;
 394    dsrb->height = height;
 395
 396    assert(dsrb->surface->width == width);
 397    assert(dsrb->surface->height == height);
 398
 399    return TRUE;
 400 }
 401
 402 void vg_validate_state(struct vg_context *ctx)
 403 {
 404    struct st_framebuffer *stfb = ctx->draw_buffer;
 405
 406    vg_manager_validate_framebuffer(ctx);
 407
 408    if (vg_context_update_depth_stencil_rb(ctx, stfb->width, stfb->height))
 409       ctx->state.dirty |= DEPTH_STENCIL_DIRTY;
 410
 411    /* blend state depends on fb format and paint color */
 412    if ((ctx->state.dirty & FRAMEBUFFER_DIRTY) ||
 413        (ctx->state.dirty & PAINT_DIRTY))
 414       ctx->state.dirty |= BLEND_DIRTY;
 415
 416    renderer_validate(ctx->renderer, ctx->state.dirty,
 417          ctx->draw_buffer, &ctx->state.vg);
 418
 419    ctx->state.dirty = 0;
 420
 421    shader_set_masking(ctx->shader, ctx->state.vg.masking);
 422    shader_set_image_mode(ctx->shader, ctx->state.vg.image_mode);
 423    shader_set_color_transform(ctx->shader, ctx->state.vg.color_transform);
 424 }
 425
 426 VGboolean vg_object_is_valid(VGHandle object, enum vg_object_type type)
 427 {
 428    struct vg_object *obj = handle_to_object(object);
 429    if (obj && is_aligned(obj) && obj->type == type)
 430       return VG_TRUE;
 431    else
 432       return VG_FALSE;
 433 }
 434
 435 void vg_set_error(struct vg_context *ctx,
 436                   VGErrorCode code)
 437 {
 438    /*vgGetError returns the oldest error code provided by
 439     * an API call on the current context since the previous
 440     * call to vgGetError on that context (or since the creation
 441     of the context).*/
 442    if (ctx->_error == VG_NO_ERROR)
 443       ctx->_error = code;
 444 }
 445
 446 static void vg_prepare_blend_texture(struct vg_context *ctx,
 447                                      struct pipe_sampler_view *src)
 448 {
 449    struct st_framebuffer *stfb = ctx->draw_buffer;
 450    struct pipe_surface *surf;
 451    struct pipe_surface surf_tmpl;
 452
 453    vg_context_update_blend_texture_view(ctx, stfb->width, stfb->height);
 454
 455    memset(&surf_tmpl, 0, sizeof(surf_tmpl));
 456    u_surface_default_template(&surf_tmpl, stfb->blend_texture_view->texture,
 457                               PIPE_BIND_RENDER_TARGET);
 458    surf = ctx->pipe->create_surface(ctx->pipe,
 459                                     stfb->blend_texture_view->texture,
 460                                     &surf_tmpl);
 461    if (surf) {
 462       util_blit_pixels_tex(ctx->blit,
 463                            src, 0, 0, stfb->width, stfb->height,
 464                            surf, 0, 0, stfb->width, stfb->height,
 465                            0.0, PIPE_TEX_MIPFILTER_NEAREST);
 466
 467       pipe_surface_reference(&surf, NULL);
 468    }
 469 }
 470
 471 struct pipe_sampler_view *vg_prepare_blend_surface(struct vg_context *ctx)
 472 {
 473    struct pipe_context *pipe = ctx->pipe;
 474    struct pipe_sampler_view *view;
 475    struct pipe_sampler_view view_templ;
 476    struct st_framebuffer *stfb = ctx->draw_buffer;
 477    struct st_renderbuffer *strb = stfb->strb;
 478
 479    vg_validate_state(ctx);
 480
 481    u_sampler_view_default_template(&view_templ, strb->texture, strb->texture->format);
 482    view = pipe->create_sampler_view(pipe, strb->texture, &view_templ);
 483
 484    vg_prepare_blend_texture(ctx, view);
 485
 486    pipe_sampler_view_reference(&view, NULL);
 487
 488    return stfb->blend_texture_view;
 489 }
 490
 491
 492 struct pipe_sampler_view *vg_prepare_blend_surface_from_mask(struct vg_context *ctx)
 493 {
 494    struct st_framebuffer *stfb = ctx->draw_buffer;
 495
 496    vg_validate_state(ctx);
 497
 498    vg_context_update_surface_mask_view(ctx, stfb->width, stfb->height);
 499    vg_prepare_blend_texture(ctx, stfb->surface_mask_view);
 500
 501    return stfb->blend_texture_view;
 502 }
 503
 504 struct pipe_sampler_view *vg_get_surface_mask(struct vg_context *ctx)
 505 {
 506    struct st_framebuffer *stfb = ctx->draw_buffer;
 507
 508    vg_context_update_surface_mask_view(ctx, stfb->width, stfb->height);
 509
 510    return stfb->surface_mask_view;
 511 }
 512
 513 /**
 514  * A transformation from window coordinates to paint coordinates.
 515  */
 516 VGboolean vg_get_paint_matrix(struct vg_context *ctx,
 517                               const struct matrix *paint_to_user,
 518                               const struct matrix *user_to_surface,
 519                               struct matrix *mat)
 520 {
 521    struct matrix tmp;
 522
 523    /* get user-to-paint matrix */
 524    memcpy(mat, paint_to_user, sizeof(*paint_to_user));
 525    if (!matrix_invert(mat))
 526       return VG_FALSE;
 527
 528    /* get surface-to-user matrix */
 529    memcpy(&tmp, user_to_surface, sizeof(*user_to_surface));
 530    if (!matrix_invert(&tmp))
 531       return VG_FALSE;
 532
 533    matrix_mult(mat, &tmp);
 534
 535    return VG_TRUE;
 536 }