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 "asm_util.h"
  34 #include "st_inlines.h"
  35 #include "vg_manager.h"
  36 #include "api.h"
  37 #include "mask.h"
  38
  39 #include "pipe/p_context.h"
  40 #include "util/u_inlines.h"
  41
  42 #include "cso_cache/cso_context.h"
  43
  44 #include "util/u_simple_shaders.h"
  45 #include "util/u_memory.h"
  46 #include "util/u_blit.h"
  47 #include "util/u_sampler.h"
  48 #include "util/u_format.h"
  49
  50 struct vg_context *_vg_context = 0;
  51
  52 struct vg_context * vg_current_context(void)
  53 {
  54    return _vg_context;
  55 }
  56
  57 /**
  58  * A depth/stencil rb will be needed regardless of what the visual says.
  59  */
  60 static boolean
  61 choose_depth_stencil_format(struct vg_context *ctx)
  62 {
  63    struct pipe_screen *screen = ctx->pipe->screen;
  64    enum pipe_format formats[] = {
  65       PIPE_FORMAT_Z24_UNORM_S8_USCALED,
  66       PIPE_FORMAT_S8_USCALED_Z24_UNORM,
  67       PIPE_FORMAT_NONE
  68    };
  69    enum pipe_format *fmt;
  70
  71    for (fmt = formats; *fmt != PIPE_FORMAT_NONE; fmt++) {
  72       if (screen->is_format_supported(screen, *fmt,
  73                PIPE_TEXTURE_2D, 0, PIPE_BIND_DEPTH_STENCIL, 0))
  74          break;
  75    }
  76
  77    ctx->ds_format = *fmt;
  78
  79    return (ctx->ds_format != PIPE_FORMAT_NONE);
  80 }
  81
  82 void vg_set_current_context(struct vg_context *ctx)
  83 {
  84    _vg_context = ctx;
  85    api_make_dispatch_current((ctx) ? ctx->dispatch : NULL);
  86 }
  87
  88 struct vg_context * vg_create_context(struct pipe_context *pipe,
  89                                       const void *visual,
  90                                       struct vg_context *share)
  91 {
  92    struct vg_context *ctx;
  93
  94    ctx = CALLOC_STRUCT(vg_context);
  95
  96    ctx->pipe = pipe;
  97    if (!choose_depth_stencil_format(ctx)) {
  98       FREE(ctx);
  99       return NULL;
 100    }
 101
 102    ctx->dispatch = api_create_dispatch();
 103
 104    vg_init_state(&ctx->state.vg);
 105    ctx->state.dirty = ALL_DIRTY;
 106
 107    ctx->cso_context = cso_create_context(pipe);
 108
 109    ctx->default_paint = paint_create(ctx);
 110    ctx->state.vg.stroke_paint = ctx->default_paint;
 111    ctx->state.vg.fill_paint = ctx->default_paint;
 112
 113
 114    ctx->mask.sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 115    ctx->mask.sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 116    ctx->mask.sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 117    ctx->mask.sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
 118    ctx->mask.sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
 119    ctx->mask.sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
 120    ctx->mask.sampler.normalized_coords = 0;
 121
 122    ctx->blend_sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 123    ctx->blend_sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 124    ctx->blend_sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 125    ctx->blend_sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
 126    ctx->blend_sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
 127    ctx->blend_sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
 128    ctx->blend_sampler.normalized_coords = 0;
 129
 130    vg_set_error(ctx, VG_NO_ERROR);
 131
 132    ctx->owned_objects[VG_OBJECT_PAINT] = cso_hash_create();
 133    ctx->owned_objects[VG_OBJECT_IMAGE] = cso_hash_create();
 134    ctx->owned_objects[VG_OBJECT_MASK] = cso_hash_create();
 135    ctx->owned_objects[VG_OBJECT_FONT] = cso_hash_create();
 136    ctx->owned_objects[VG_OBJECT_PATH] = cso_hash_create();
 137
 138    ctx->renderer = renderer_create(ctx);
 139    ctx->sc = shaders_cache_create(ctx);
 140    ctx->shader = shader_create(ctx);
 141
 142    ctx->blit = util_create_blit(ctx->pipe, ctx->cso_context);
 143
 144    return ctx;
 145 }
 146
 147 void vg_destroy_context(struct vg_context *ctx)
 148 {
 149    struct pipe_resource **cbuf = &ctx->mask.cbuf;
 150
 151    util_destroy_blit(ctx->blit);
 152    renderer_destroy(ctx->renderer);
 153    shaders_cache_destroy(ctx->sc);
 154    shader_destroy(ctx->shader);
 155    paint_destroy(ctx->default_paint);
 156
 157    if (*cbuf)
 158       pipe_resource_reference(cbuf, NULL);
 159
 160    if (ctx->mask.union_fs)
 161       vg_shader_destroy(ctx, ctx->mask.union_fs);
 162    if (ctx->mask.intersect_fs)
 163       vg_shader_destroy(ctx, ctx->mask.intersect_fs);
 164    if (ctx->mask.subtract_fs)
 165       vg_shader_destroy(ctx, ctx->mask.subtract_fs);
 166    if (ctx->mask.set_fs)
 167       vg_shader_destroy(ctx, ctx->mask.set_fs);
 168
 169    cso_release_all(ctx->cso_context);
 170    cso_destroy_context(ctx->cso_context);
 171
 172    cso_hash_delete(ctx->owned_objects[VG_OBJECT_PAINT]);
 173    cso_hash_delete(ctx->owned_objects[VG_OBJECT_IMAGE]);
 174    cso_hash_delete(ctx->owned_objects[VG_OBJECT_MASK]);
 175    cso_hash_delete(ctx->owned_objects[VG_OBJECT_FONT]);
 176    cso_hash_delete(ctx->owned_objects[VG_OBJECT_PATH]);
 177
 178    api_destroy_dispatch(ctx->dispatch);
 179
 180    FREE(ctx);
 181 }
 182
 183 void vg_init_object(struct vg_object *obj, struct vg_context *ctx, enum vg_object_type type)
 184 {
 185    obj->type = type;
 186    obj->ctx = ctx;
 187 }
 188
 189 VGboolean vg_context_is_object_valid(struct vg_context *ctx,
 190                                 enum vg_object_type type,
 191                                 void *ptr)
 192 {
 193     if (ctx) {
 194        struct cso_hash *hash = ctx->owned_objects[type];
 195        if (!hash)
 196           return VG_FALSE;
 197        return cso_hash_contains(hash, (unsigned)(long)ptr);
 198     }
 199     return VG_FALSE;
 200 }
 201
 202 void vg_context_add_object(struct vg_context *ctx,
 203                            enum vg_object_type type,
 204                            void *ptr)
 205 {
 206     if (ctx) {
 207        struct cso_hash *hash = ctx->owned_objects[type];
 208        if (!hash)
 209           return;
 210        cso_hash_insert(hash, (unsigned)(long)ptr, ptr);
 211     }
 212 }
 213
 214 void vg_context_remove_object(struct vg_context *ctx,
 215                               enum vg_object_type type,
 216                               void *ptr)
 217 {
 218    if (ctx) {
 219       struct cso_hash *hash = ctx->owned_objects[type];
 220       if (!hash)
 221          return;
 222       cso_hash_take(hash, (unsigned)(long)ptr);
 223    }
 224 }
 225
 226 static struct pipe_resource *
 227 create_texture(struct pipe_context *pipe, enum pipe_format format,
 228                     VGint width, VGint height)
 229 {
 230    struct pipe_resource templ;
 231
 232    memset(&templ, 0, sizeof(templ));
 233
 234    if (format != PIPE_FORMAT_NONE) {
 235       templ.format = format;
 236    }
 237    else {
 238       templ.format = PIPE_FORMAT_B8G8R8A8_UNORM;
 239    }
 240
 241    templ.target = PIPE_TEXTURE_2D;
 242    templ.width0 = width;
 243    templ.height0 = height;
 244    templ.depth0 = 1;
 245    templ.last_level = 0;
 246
 247    if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 1)) {
 248       templ.bind = PIPE_BIND_DEPTH_STENCIL;
 249    } else {
 250       templ.bind = (PIPE_BIND_DISPLAY_TARGET |
 251                     PIPE_BIND_RENDER_TARGET |
 252                     PIPE_BIND_SAMPLER_VIEW);
 253    }
 254
 255    return pipe->screen->resource_create(pipe->screen, &templ);
 256 }
 257
 258 static struct pipe_sampler_view *
 259 create_tex_and_view(struct pipe_context *pipe, enum pipe_format format,
 260                     VGint width, VGint height)
 261 {
 262    struct pipe_resource *texture;
 263    struct pipe_sampler_view view_templ;
 264    struct pipe_sampler_view *view;
 265
 266    texture = create_texture(pipe, format, width, height);
 267
 268    if (!texture)
 269       return NULL;
 270
 271    u_sampler_view_default_template(&view_templ, texture, texture->format);
 272    view = pipe->create_sampler_view(pipe, texture, &view_templ);
 273    /* want the texture to go away if the view is freed */
 274    pipe_resource_reference(&texture, NULL);
 275
 276    return view;
 277 }
 278
 279 static void
 280 vg_context_update_alpha_mask_view(struct vg_context *ctx,
 281                                   uint width, uint height)
 282 {
 283    struct st_framebuffer *stfb = ctx->draw_buffer;
 284    struct pipe_sampler_view *old_sampler_view = stfb->alpha_mask_view;
 285    struct pipe_context *pipe = ctx->pipe;
 286
 287    if (old_sampler_view &&
 288        old_sampler_view->texture->width0 == width &&
 289        old_sampler_view->texture->height0 == height)
 290       return;
 291
 292    /*
 293      we use PIPE_FORMAT_B8G8R8A8_UNORM because we want to render to
 294      this texture and use it as a sampler, so while this wastes some
 295      space it makes both of those a lot simpler
 296    */
 297    stfb->alpha_mask_view = create_tex_and_view(pipe,
 298          PIPE_FORMAT_B8G8R8A8_UNORM, width, height);
 299
 300    if (!stfb->alpha_mask_view) {
 301       if (old_sampler_view)
 302          pipe_sampler_view_reference(&old_sampler_view, NULL);
 303       return;
 304    }
 305
 306    /* XXX could this call be avoided? */
 307    vg_validate_state(ctx);
 308
 309    /* alpha mask starts with 1.f alpha */
 310    mask_fill(0, 0, width, height, 1.f);
 311
 312    /* if we had an old surface copy it over */
 313    if (old_sampler_view) {
 314       struct pipe_subresource subsurf, subold_surf;
 315       subsurf.face = 0;
 316       subsurf.level = 0;
 317       subold_surf.face = 0;
 318       subold_surf.level = 0;
 319       pipe->resource_copy_region(pipe,
 320                                  stfb->alpha_mask_view->texture,
 321                                  subsurf,
 322                                  0, 0, 0,
 323                                  old_sampler_view->texture,
 324                                  subold_surf,
 325                                  0, 0, 0,
 326                                  MIN2(old_sampler_view->texture->width0,
 327                                       stfb->alpha_mask_view->texture->width0),
 328                                  MIN2(old_sampler_view->texture->height0,
 329                                       stfb->alpha_mask_view->texture->height0));
 330    }
 331
 332    /* Free the old texture
 333     */
 334    if (old_sampler_view)
 335       pipe_sampler_view_reference(&old_sampler_view, NULL);
 336 }
 337
 338 static void
 339 vg_context_update_blend_texture_view(struct vg_context *ctx,
 340                                      uint width, uint height)
 341 {
 342    struct pipe_context *pipe = ctx->pipe;
 343    struct st_framebuffer *stfb = ctx->draw_buffer;
 344    struct pipe_sampler_view *old = stfb->blend_texture_view;
 345
 346    if (old &&
 347        old->texture->width0 == width &&
 348        old->texture->height0 == height)
 349       return;
 350
 351    stfb->blend_texture_view = create_tex_and_view(pipe,
 352          PIPE_FORMAT_B8G8R8A8_UNORM, width, height);
 353
 354    pipe_sampler_view_reference(&old, NULL);
 355 }
 356
 357 static boolean
 358 vg_context_update_depth_stencil_rb(struct vg_context * ctx,
 359                                    uint width, uint height)
 360 {
 361    struct st_renderbuffer *dsrb = ctx->draw_buffer->dsrb;
 362    struct pipe_context *pipe = ctx->pipe;
 363    unsigned surface_usage;
 364
 365    if ((dsrb->width == width && dsrb->height == height) && dsrb->texture)
 366       return FALSE;
 367
 368    /* unreference existing ones */
 369    pipe_surface_reference(&dsrb->surface, NULL);
 370    pipe_resource_reference(&dsrb->texture, NULL);
 371    dsrb->width = dsrb->height = 0;
 372
 373    /* Probably need dedicated flags for surface usage too:
 374     */
 375    surface_usage = PIPE_BIND_DEPTH_STENCIL; /* XXX: was: RENDER_TARGET */
 376
 377    dsrb->texture = create_texture(pipe, dsrb->format, width, height);
 378    if (!dsrb->texture)
 379       return TRUE;
 380
 381    dsrb->surface = pipe->screen->get_tex_surface(pipe->screen,
 382                                                  dsrb->texture,
 383                                                  0, 0, 0,
 384                                                  surface_usage);
 385    if (!dsrb->surface) {
 386       pipe_resource_reference(&dsrb->texture, NULL);
 387       return TRUE;
 388    }
 389
 390    dsrb->width = width;
 391    dsrb->height = height;
 392
 393    assert(dsrb->surface->width == width);
 394    assert(dsrb->surface->height == height);
 395
 396    return TRUE;
 397 }
 398
 399 void vg_validate_state(struct vg_context *ctx)
 400 {
 401    struct st_framebuffer *stfb = ctx->draw_buffer;
 402
 403    vg_manager_validate_framebuffer(ctx);
 404
 405    if (vg_context_update_depth_stencil_rb(ctx, stfb->width, stfb->height))
 406       ctx->state.dirty |= DEPTH_STENCIL_DIRTY;
 407
 408    /* TODO create as needed */
 409    vg_context_update_alpha_mask_view(ctx, stfb->width, stfb->height);
 410    vg_context_update_blend_texture_view(ctx, stfb->width, stfb->height);
 411
 412    renderer_validate(ctx->renderer, ctx->state.dirty,
 413          ctx->draw_buffer, &ctx->state.vg);
 414
 415    ctx->state.dirty = NONE_DIRTY;
 416
 417    shader_set_masking(ctx->shader, ctx->state.vg.masking);
 418    shader_set_image_mode(ctx->shader, ctx->state.vg.image_mode);
 419    shader_set_color_transform(ctx->shader, ctx->state.vg.color_transform);
 420 }
 421
 422 VGboolean vg_object_is_valid(void *ptr, enum vg_object_type type)
 423 {
 424    struct vg_object *obj = ptr;
 425    if (ptr && is_aligned(obj) && obj->type == type)
 426       return VG_TRUE;
 427    else
 428       return VG_FALSE;
 429 }
 430
 431 void vg_set_error(struct vg_context *ctx,
 432                   VGErrorCode code)
 433 {
 434    /*vgGetError returns the oldest error code provided by
 435     * an API call on the current context since the previous
 436     * call to vgGetError on that context (or since the creation
 437     of the context).*/
 438    if (ctx->_error == VG_NO_ERROR)
 439       ctx->_error = code;
 440 }
 441
 442 void vg_prepare_blend_surface(struct vg_context *ctx)
 443 {
 444    struct pipe_surface *dest_surface = NULL;
 445    struct pipe_context *pipe = ctx->pipe;
 446    struct pipe_sampler_view *view;
 447    struct pipe_sampler_view view_templ;
 448    struct st_framebuffer *stfb = ctx->draw_buffer;
 449    struct st_renderbuffer *strb = stfb->strb;
 450
 451    /* first finish all pending rendering */
 452    vgFinish();
 453
 454    u_sampler_view_default_template(&view_templ, strb->texture, strb->texture->format);
 455    view = pipe->create_sampler_view(pipe, strb->texture, &view_templ);
 456
 457    dest_surface = pipe->screen->get_tex_surface(pipe->screen,
 458                                                 stfb->blend_texture_view->texture,
 459                                                 0, 0, 0,
 460                                                 PIPE_BIND_RENDER_TARGET);
 461    util_blit_pixels_tex(ctx->blit,
 462                         view,
 463                         0, 0,
 464                         strb->width, strb->height,
 465                         dest_surface,
 466                         0, 0,
 467                         strb->width, strb->height,
 468                         0.0, PIPE_TEX_MIPFILTER_NEAREST);
 469
 470    if (dest_surface)
 471       pipe_surface_reference(&dest_surface, NULL);
 472
 473    /* make sure it's complete */
 474    vgFinish();
 475
 476    pipe_sampler_view_reference(&view, NULL);
 477 }
 478
 479
 480 void vg_prepare_blend_surface_from_mask(struct vg_context *ctx)
 481 {
 482    struct pipe_surface *dest_surface = NULL;
 483    struct pipe_context *pipe = ctx->pipe;
 484    struct st_framebuffer *stfb = ctx->draw_buffer;
 485    struct st_renderbuffer *strb = stfb->strb;
 486
 487    vg_validate_state(ctx);
 488
 489    /* first finish all pending rendering */
 490    vgFinish();
 491
 492    dest_surface = pipe->screen->get_tex_surface(pipe->screen,
 493                                                 stfb->blend_texture_view->texture,
 494                                                 0, 0, 0,
 495                                                 PIPE_BIND_RENDER_TARGET);
 496
 497    util_blit_pixels_tex(ctx->blit,
 498                         stfb->alpha_mask_view,
 499                         0, 0,
 500                         strb->width, strb->height,
 501                         dest_surface,
 502                         0, 0,
 503                         strb->width, strb->height,
 504                         0.0, PIPE_TEX_MIPFILTER_NEAREST);
 505
 506    /* make sure it's complete */
 507    vgFinish();
 508
 509    if (dest_surface)
 510       pipe_surface_reference(&dest_surface, NULL);
 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 }