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_sampler.h"
  45 #include "util/u_surface.h"
  46 #include "util/u_format.h"
  47
  48 struct vg_context *_vg_context = 0;
  49
  50 struct vg_context * vg_current_context(void)
  51 {
  52    return _vg_context;
  53 }
  54
  55 /**
  56  * A depth/stencil rb will be needed regardless of what the visual says.
  57  */
  58 static boolean
  59 choose_depth_stencil_format(struct vg_context *ctx)
  60 {
  61    struct pipe_screen *screen = ctx->pipe->screen;
  62    enum pipe_format formats[] = {
  63       PIPE_FORMAT_Z24_UNORM_S8_UINT,
  64       PIPE_FORMAT_S8_UINT_Z24_UNORM,
  65       PIPE_FORMAT_NONE
  66    };
  67    enum pipe_format *fmt;
  68
  69    for (fmt = formats; *fmt != PIPE_FORMAT_NONE; fmt++) {
  70       if (screen->is_format_supported(screen, *fmt,
  71                PIPE_TEXTURE_2D, 0, PIPE_BIND_DEPTH_STENCIL))
  72          break;
  73    }
  74
  75    ctx->ds_format = *fmt;
  76
  77    return (ctx->ds_format != PIPE_FORMAT_NONE);
  78 }
  79
  80 void vg_set_current_context(struct vg_context *ctx)
  81 {
  82    _vg_context = ctx;
  83    api_make_dispatch_current((ctx) ? ctx->dispatch : NULL);
  84 }
  85
  86 struct vg_context * vg_create_context(struct pipe_context *pipe,
  87                                       const void *visual,
  88                                       struct vg_context *share)
  89 {
  90    struct vg_context *ctx;
  91
  92    ctx = CALLOC_STRUCT(vg_context);
  93
  94    ctx->pipe = pipe;
  95    if (!choose_depth_stencil_format(ctx)) {
  96       FREE(ctx);
  97       return NULL;
  98    }
  99
 100    ctx->dispatch = api_create_dispatch();
 101
 102    vg_init_state(&ctx->state.vg);
 103    ctx->state.dirty = ALL_DIRTY;
 104
 105    ctx->cso_context = cso_create_context(pipe);
 106
 107    ctx->default_paint = paint_create(ctx);
 108    ctx->state.vg.stroke_paint = ctx->default_paint;
 109    ctx->state.vg.fill_paint = ctx->default_paint;
 110
 111
 112    ctx->mask.sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 113    ctx->mask.sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 114    ctx->mask.sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 115    ctx->mask.sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
 116    ctx->mask.sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
 117    ctx->mask.sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
 118    ctx->mask.sampler.normalized_coords = 0;
 119
 120    ctx->blend_sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 121    ctx->blend_sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 122    ctx->blend_sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 123    ctx->blend_sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
 124    ctx->blend_sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
 125    ctx->blend_sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
 126    ctx->blend_sampler.normalized_coords = 0;
 127
 128    vg_set_error(ctx, VG_NO_ERROR);
 129
 130    ctx->owned_objects[VG_OBJECT_PAINT] = cso_hash_create();
 131    ctx->owned_objects[VG_OBJECT_IMAGE] = cso_hash_create();
 132    ctx->owned_objects[VG_OBJECT_MASK] = cso_hash_create();
 133    ctx->owned_objects[VG_OBJECT_FONT] = cso_hash_create();
 134    ctx->owned_objects[VG_OBJECT_PATH] = cso_hash_create();
 135
 136    ctx->renderer = renderer_create(ctx);
 137    ctx->sc = shaders_cache_create(ctx);
 138    ctx->shader = shader_create(ctx);
 139
 140    return ctx;
 141 }
 142
 143 void vg_destroy_context(struct vg_context *ctx)
 144 {
 145    struct pipe_resource **cbuf = &ctx->mask.cbuf;
 146
 147    renderer_destroy(ctx->renderer);
 148    shaders_cache_destroy(ctx->sc);
 149    shader_destroy(ctx->shader);
 150    paint_destroy(ctx->default_paint);
 151
 152    if (*cbuf)
 153       pipe_resource_reference(cbuf, NULL);
 154
 155    if (ctx->mask.union_fs)
 156       vg_shader_destroy(ctx, ctx->mask.union_fs);
 157    if (ctx->mask.intersect_fs)
 158       vg_shader_destroy(ctx, ctx->mask.intersect_fs);
 159    if (ctx->mask.subtract_fs)
 160       vg_shader_destroy(ctx, ctx->mask.subtract_fs);
 161    if (ctx->mask.set_fs)
 162       vg_shader_destroy(ctx, ctx->mask.set_fs);
 163
 164    cso_destroy_context(ctx->cso_context);
 165
 166    cso_hash_delete(ctx->owned_objects[VG_OBJECT_PAINT]);
 167    cso_hash_delete(ctx->owned_objects[VG_OBJECT_IMAGE]);
 168    cso_hash_delete(ctx->owned_objects[VG_OBJECT_MASK]);
 169    cso_hash_delete(ctx->owned_objects[VG_OBJECT_FONT]);
 170    cso_hash_delete(ctx->owned_objects[VG_OBJECT_PATH]);
 171
 172    api_destroy_dispatch(ctx->dispatch);
 173
 174    FREE(ctx);
 175 }
 176
 177 void vg_init_object(struct vg_object *obj, struct vg_context *ctx, enum vg_object_type type)
 178 {
 179    obj->type = type;
 180    obj->ctx = ctx;
 181    obj->handle = create_handle(obj);
 182 }
 183
 184 /** free object resources, but not the object itself */
 185 void vg_free_object(struct vg_object *obj)
 186 {
 187    obj->type = 0;
 188    obj->ctx = NULL;
 189    destroy_handle(obj->handle);
 190 }
 191
 192 VGboolean vg_context_is_object_valid(struct vg_context *ctx,
 193                                 enum vg_object_type type,
 194                                 VGHandle handle)
 195 {
 196     if (ctx) {
 197        struct cso_hash *hash = ctx->owned_objects[type];
 198        if (!hash)
 199           return VG_FALSE;
 200        return cso_hash_contains(hash, (unsigned) handle);
 201     }
 202     return VG_FALSE;
 203 }
 204
 205 void vg_context_add_object(struct vg_context *ctx,
 206                            struct vg_object *obj)
 207 {
 208     if (ctx) {
 209        struct cso_hash *hash = ctx->owned_objects[obj->type];
 210        if (!hash)
 211           return;
 212        cso_hash_insert(hash, (unsigned) obj->handle, obj);
 213     }
 214 }
 215
 216 void vg_context_remove_object(struct vg_context *ctx,
 217                               struct vg_object *obj)
 218 {
 219    if (ctx) {
 220       struct cso_hash *hash = ctx->owned_objects[obj->type];
 221       if (!hash)
 222          return;
 223       cso_hash_take(hash, (unsigned) obj->handle);
 224    }
 225 }
 226
 227 static struct pipe_resource *
 228 create_texture(struct pipe_context *pipe, enum pipe_format format,
 229                     VGint width, VGint height)
 230 {
 231    struct pipe_resource templ;
 232
 233    memset(&templ, 0, sizeof(templ));
 234
 235    if (format != PIPE_FORMAT_NONE) {
 236       templ.format = format;
 237    }
 238    else {
 239       templ.format = PIPE_FORMAT_B8G8R8A8_UNORM;
 240    }
 241
 242    templ.target = PIPE_TEXTURE_2D;
 243    templ.width0 = width;
 244    templ.height0 = height;
 245    templ.depth0 = 1;
 246    templ.array_size = 1;
 247    templ.last_level = 0;
 248
 249    if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 1)) {
 250       templ.bind = PIPE_BIND_DEPTH_STENCIL;
 251    } else {
 252       templ.bind = (PIPE_BIND_DISPLAY_TARGET |
 253                     PIPE_BIND_RENDER_TARGET |
 254                     PIPE_BIND_SAMPLER_VIEW);
 255    }
 256
 257    return pipe->screen->resource_create(pipe->screen, &templ);
 258 }
 259
 260 static struct pipe_sampler_view *
 261 create_tex_and_view(struct pipe_context *pipe, enum pipe_format format,
 262                     VGint width, VGint height)
 263 {
 264    struct pipe_resource *texture;
 265    struct pipe_sampler_view view_templ;
 266    struct pipe_sampler_view *view;
 267
 268    texture = create_texture(pipe, format, width, height);
 269
 270    if (!texture)
 271       return NULL;
 272
 273    u_sampler_view_default_template(&view_templ, texture, texture->format);
 274    view = pipe->create_sampler_view(pipe, texture, &view_templ);
 275    /* want the texture to go away if the view is freed */
 276    pipe_resource_reference(&texture, NULL);
 277
 278    return view;
 279 }
 280
 281 static void
 282 vg_context_update_surface_mask_view(struct vg_context *ctx,
 283                                     uint width, uint height)
 284 {
 285    struct st_framebuffer *stfb = ctx->draw_buffer;
 286    struct pipe_sampler_view *old_sampler_view = stfb->surface_mask_view;
 287    struct pipe_context *pipe = ctx->pipe;
 288
 289    if (old_sampler_view &&
 290        old_sampler_view->texture->width0 == width &&
 291        old_sampler_view->texture->height0 == height)
 292       return;
 293
 294    /*
 295      we use PIPE_FORMAT_B8G8R8A8_UNORM because we want to render to
 296      this texture and use it as a sampler, so while this wastes some
 297      space it makes both of those a lot simpler
 298    */
 299    stfb->surface_mask_view = create_tex_and_view(pipe,
 300          PIPE_FORMAT_B8G8R8A8_UNORM, width, height);
 301
 302    if (!stfb->surface_mask_view) {
 303       if (old_sampler_view)
 304          pipe_sampler_view_reference(&old_sampler_view, NULL);
 305       return;
 306    }
 307
 308    /* XXX could this call be avoided? */
 309    vg_validate_state(ctx);
 310
 311    /* alpha mask starts with 1.f alpha */
 312    mask_fill(0, 0, width, height, 1.f);
 313
 314    /* if we had an old surface copy it over */
 315    if (old_sampler_view) {
 316       struct pipe_box src_box;
 317       u_box_origin_2d(MIN2(old_sampler_view->texture->width0,
 318                            stfb->surface_mask_view->texture->width0),
 319                       MIN2(old_sampler_view->texture->height0,
 320                            stfb->surface_mask_view->texture->height0),
 321                       &src_box);
 322
 323       pipe->resource_copy_region(pipe,
 324                                  stfb->surface_mask_view->texture,
 325                                  0, 0, 0, 0,
 326                                  old_sampler_view->texture,
 327                                  0, &src_box);
 328    }
 329
 330    /* Free the old texture
 331     */
 332    if (old_sampler_view)
 333       pipe_sampler_view_reference(&old_sampler_view, NULL);
 334 }
 335
 336 static void
 337 vg_context_update_blend_texture_view(struct vg_context *ctx,
 338                                      uint width, uint height)
 339 {
 340    struct pipe_context *pipe = ctx->pipe;
 341    struct st_framebuffer *stfb = ctx->draw_buffer;
 342    struct pipe_sampler_view *old = stfb->blend_texture_view;
 343
 344    if (old &&
 345        old->texture->width0 == width &&
 346        old->texture->height0 == height)
 347       return;
 348
 349    stfb->blend_texture_view = create_tex_and_view(pipe,
 350          PIPE_FORMAT_B8G8R8A8_UNORM, width, height);
 351
 352    pipe_sampler_view_reference(&old, NULL);
 353 }
 354
 355 static boolean
 356 vg_context_update_depth_stencil_rb(struct vg_context * ctx,
 357                                    uint width, uint height)
 358 {
 359    struct st_renderbuffer *dsrb = ctx->draw_buffer->dsrb;
 360    struct pipe_context *pipe = ctx->pipe;
 361    struct pipe_surface surf_tmpl;
 362
 363    if ((dsrb->width == width && dsrb->height == height) && dsrb->texture)
 364       return FALSE;
 365
 366    /* unreference existing ones */
 367    pipe_surface_reference(&dsrb->surface, NULL);
 368    pipe_resource_reference(&dsrb->texture, NULL);
 369    dsrb->width = dsrb->height = 0;
 370
 371    dsrb->texture = create_texture(pipe, dsrb->format, width, height);
 372    if (!dsrb->texture)
 373       return TRUE;
 374
 375    u_surface_default_template(&surf_tmpl, dsrb->texture);
 376    dsrb->surface = pipe->create_surface(pipe,
 377                                         dsrb->texture,
 378                                         &surf_tmpl);
 379    if (!dsrb->surface) {
 380       pipe_resource_reference(&dsrb->texture, NULL);
 381       return TRUE;
 382    }
 383
 384    dsrb->width = width;
 385    dsrb->height = height;
 386
 387    assert(dsrb->surface->width == width);
 388    assert(dsrb->surface->height == height);
 389
 390    return TRUE;
 391 }
 392
 393 void vg_validate_state(struct vg_context *ctx)
 394 {
 395    struct st_framebuffer *stfb = ctx->draw_buffer;
 396
 397    vg_manager_validate_framebuffer(ctx);
 398
 399    if (vg_context_update_depth_stencil_rb(ctx, stfb->width, stfb->height))
 400       ctx->state.dirty |= DEPTH_STENCIL_DIRTY;
 401
 402    /* blend state depends on fb format and paint color */
 403    if ((ctx->state.dirty & FRAMEBUFFER_DIRTY) ||
 404        (ctx->state.dirty & PAINT_DIRTY))
 405       ctx->state.dirty |= BLEND_DIRTY;
 406
 407    renderer_validate(ctx->renderer, ctx->state.dirty,
 408          ctx->draw_buffer, &ctx->state.vg);
 409
 410    ctx->state.dirty = 0;
 411
 412    shader_set_masking(ctx->shader, ctx->state.vg.masking);
 413    shader_set_image_mode(ctx->shader, ctx->state.vg.image_mode);
 414    shader_set_color_transform(ctx->shader, ctx->state.vg.color_transform);
 415 }
 416
 417 VGboolean vg_object_is_valid(VGHandle object, enum vg_object_type type)
 418 {
 419    struct vg_object *obj = handle_to_object(object);
 420    if (obj && is_aligned(obj) && obj->type == type)
 421       return VG_TRUE;
 422    else
 423       return VG_FALSE;
 424 }
 425
 426 void vg_set_error(struct vg_context *ctx,
 427                   VGErrorCode code)
 428 {
 429    /*vgGetError returns the oldest error code provided by
 430     * an API call on the current context since the previous
 431     * call to vgGetError on that context (or since the creation
 432     of the context).*/
 433    if (ctx->_error == VG_NO_ERROR)
 434       ctx->_error = code;
 435 }
 436
 437 static void vg_prepare_blend_texture(struct vg_context *ctx,
 438                                      struct pipe_sampler_view *src)
 439 {
 440    struct st_framebuffer *stfb = ctx->draw_buffer;
 441    struct pipe_context *pipe = ctx->pipe;
 442    struct pipe_blit_info info;
 443
 444    vg_context_update_blend_texture_view(ctx, stfb->width, stfb->height);
 445
 446    memset(&info, 0, sizeof info);
 447    info.dst.resource = stfb->blend_texture_view->texture;
 448    info.dst.level = 0;
 449    info.dst.box.x = 0;
 450    info.dst.box.y = 0;
 451    info.dst.box.z = 0;
 452    info.dst.box.width = stfb->width;
 453    info.dst.box.height = stfb->height;
 454    info.dst.box.depth = 1;
 455    info.dst.format = stfb->blend_texture_view->format;
 456    info.src.resource = src->texture;
 457    info.src.level = src->u.tex.first_level;
 458    info.src.box.x = 0;
 459    info.src.box.y = 0;
 460    info.src.box.z = src->u.tex.first_layer;
 461    info.src.box.width = stfb->width;
 462    info.src.box.height = stfb->height;
 463    info.src.box.depth = 1;
 464    info.src.format = src->format;
 465    info.mask = PIPE_MASK_RGBA;
 466    info.filter = PIPE_TEX_MIPFILTER_NEAREST;
 467    info.scissor_enable = 0;
 468
 469    pipe->blit(pipe, &info);
 470 }
 471
 472 struct pipe_sampler_view *vg_prepare_blend_surface(struct vg_context *ctx)
 473 {
 474    struct pipe_context *pipe = ctx->pipe;
 475    struct pipe_sampler_view *view;
 476    struct pipe_sampler_view view_templ;
 477    struct st_framebuffer *stfb = ctx->draw_buffer;
 478    struct st_renderbuffer *strb = stfb->strb;
 479
 480    vg_validate_state(ctx);
 481
 482    u_sampler_view_default_template(&view_templ, strb->texture, strb->texture->format);
 483    view = pipe->create_sampler_view(pipe, strb->texture, &view_templ);
 484
 485    vg_prepare_blend_texture(ctx, view);
 486
 487    pipe_sampler_view_reference(&view, NULL);
 488
 489    return stfb->blend_texture_view;
 490 }
 491
 492
 493 struct pipe_sampler_view *vg_prepare_blend_surface_from_mask(struct vg_context *ctx)
 494 {
 495    struct st_framebuffer *stfb = ctx->draw_buffer;
 496
 497    vg_validate_state(ctx);
 498
 499    vg_context_update_surface_mask_view(ctx, stfb->width, stfb->height);
 500    vg_prepare_blend_texture(ctx, stfb->surface_mask_view);
 501
 502    return stfb->blend_texture_view;
 503 }
 504
 505 struct pipe_sampler_view *vg_get_surface_mask(struct vg_context *ctx)
 506 {
 507    struct st_framebuffer *stfb = ctx->draw_buffer;
 508
 509    vg_context_update_surface_mask_view(ctx, stfb->width, stfb->height);
 510
 511    return stfb->surface_mask_view;
 512 }
 513
 514 /**
 515  * A transformation from window coordinates to paint coordinates.
 516  */
 517 VGboolean vg_get_paint_matrix(struct vg_context *ctx,
 518                               const struct matrix *paint_to_user,
 519                               const struct matrix *user_to_surface,
 520                               struct matrix *mat)
 521 {
 522    struct matrix tmp;
 523
 524    /* get user-to-paint matrix */
 525    memcpy(mat, paint_to_user, sizeof(*paint_to_user));
 526    if (!matrix_invert(mat))
 527       return VG_FALSE;
 528
 529    /* get surface-to-user matrix */
 530    memcpy(&tmp, user_to_surface, sizeof(*user_to_surface));
 531    if (!matrix_invert(&tmp))
 532       return VG_FALSE;
 533
 534    matrix_mult(mat, &tmp);
 535
 536    return VG_TRUE;
 537 }