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 "vg_manager.h"
  35 #include "api.h"
  36 #include "mask.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_simple_shaders.h"
  44 #include "util/u_memory.h"
  45 #include "util/u_blit.h"
  46 #include "util/u_sampler.h"
  47 #include "util/u_surface.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.array_size = 1;
 246    templ.last_level = 0;
 247
 248    if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 1)) {
 249       templ.bind = PIPE_BIND_DEPTH_STENCIL;
 250    } else {
 251       templ.bind = (PIPE_BIND_DISPLAY_TARGET |
 252                     PIPE_BIND_RENDER_TARGET |
 253                     PIPE_BIND_SAMPLER_VIEW);
 254    }
 255
 256    return pipe->screen->resource_create(pipe->screen, &templ);
 257 }
 258
 259 static struct pipe_sampler_view *
 260 create_tex_and_view(struct pipe_context *pipe, enum pipe_format format,
 261                     VGint width, VGint height)
 262 {
 263    struct pipe_resource *texture;
 264    struct pipe_sampler_view view_templ;
 265    struct pipe_sampler_view *view;
 266
 267    texture = create_texture(pipe, format, width, height);
 268
 269    if (!texture)
 270       return NULL;
 271
 272    u_sampler_view_default_template(&view_templ, texture, texture->format);
 273    view = pipe->create_sampler_view(pipe, texture, &view_templ);
 274    /* want the texture to go away if the view is freed */
 275    pipe_resource_reference(&texture, NULL);
 276
 277    return view;
 278 }
 279
 280 static void
 281 vg_context_update_surface_mask_view(struct vg_context *ctx,
 282                                     uint width, uint height)
 283 {
 284    struct st_framebuffer *stfb = ctx->draw_buffer;
 285    struct pipe_sampler_view *old_sampler_view = stfb->surface_mask_view;
 286    struct pipe_context *pipe = ctx->pipe;
 287
 288    if (old_sampler_view &&
 289        old_sampler_view->texture->width0 == width &&
 290        old_sampler_view->texture->height0 == height)
 291       return;
 292
 293    /*
 294      we use PIPE_FORMAT_B8G8R8A8_UNORM because we want to render to
 295      this texture and use it as a sampler, so while this wastes some
 296      space it makes both of those a lot simpler
 297    */
 298    stfb->surface_mask_view = create_tex_and_view(pipe,
 299          PIPE_FORMAT_B8G8R8A8_UNORM, width, height);
 300
 301    if (!stfb->surface_mask_view) {
 302       if (old_sampler_view)
 303          pipe_sampler_view_reference(&old_sampler_view, NULL);
 304       return;
 305    }
 306
 307    /* XXX could this call be avoided? */
 308    vg_validate_state(ctx);
 309
 310    /* alpha mask starts with 1.f alpha */
 311    mask_fill(0, 0, width, height, 1.f);
 312
 313    /* if we had an old surface copy it over */
 314    if (old_sampler_view) {
 315       struct pipe_box src_box;
 316       u_box_origin_2d(MIN2(old_sampler_view->texture->width0,
 317                            stfb->surface_mask_view->texture->width0),
 318                       MIN2(old_sampler_view->texture->height0,
 319                            stfb->surface_mask_view->texture->height0),
 320                       &src_box);
 321
 322       pipe->resource_copy_region(pipe,
 323                                  stfb->surface_mask_view->texture,
 324                                  0, 0, 0, 0,
 325                                  old_sampler_view->texture,
 326                                  0, &src_box);
 327    }
 328
 329    /* Free the old texture
 330     */
 331    if (old_sampler_view)
 332       pipe_sampler_view_reference(&old_sampler_view, NULL);
 333 }
 334
 335 static void
 336 vg_context_update_blend_texture_view(struct vg_context *ctx,
 337                                      uint width, uint height)
 338 {
 339    struct pipe_context *pipe = ctx->pipe;
 340    struct st_framebuffer *stfb = ctx->draw_buffer;
 341    struct pipe_sampler_view *old = stfb->blend_texture_view;
 342
 343    if (old &&
 344        old->texture->width0 == width &&
 345        old->texture->height0 == height)
 346       return;
 347
 348    stfb->blend_texture_view = create_tex_and_view(pipe,
 349          PIPE_FORMAT_B8G8R8A8_UNORM, width, height);
 350
 351    pipe_sampler_view_reference(&old, NULL);
 352 }
 353
 354 static boolean
 355 vg_context_update_depth_stencil_rb(struct vg_context * ctx,
 356                                    uint width, uint height)
 357 {
 358    struct st_renderbuffer *dsrb = ctx->draw_buffer->dsrb;
 359    struct pipe_context *pipe = ctx->pipe;
 360    struct pipe_surface surf_tmpl;
 361
 362    if ((dsrb->width == width && dsrb->height == height) && dsrb->texture)
 363       return FALSE;
 364
 365    /* unreference existing ones */
 366    pipe_surface_reference(&dsrb->surface, NULL);
 367    pipe_resource_reference(&dsrb->texture, NULL);
 368    dsrb->width = dsrb->height = 0;
 369
 370    dsrb->texture = create_texture(pipe, dsrb->format, width, height);
 371    if (!dsrb->texture)
 372       return TRUE;
 373
 374    memset(&surf_tmpl, 0, sizeof(surf_tmpl));
 375    u_surface_default_template(&surf_tmpl, dsrb->texture,
 376                               PIPE_BIND_DEPTH_STENCIL);
 377    dsrb->surface = pipe->create_surface(pipe,
 378                                         dsrb->texture,
 379                                         &surf_tmpl);
 380    if (!dsrb->surface) {
 381       pipe_resource_reference(&dsrb->texture, NULL);
 382       return TRUE;
 383    }
 384
 385    dsrb->width = width;
 386    dsrb->height = height;
 387
 388    assert(dsrb->surface->width == width);
 389    assert(dsrb->surface->height == height);
 390
 391    return TRUE;
 392 }
 393
 394 void vg_validate_state(struct vg_context *ctx)
 395 {
 396    struct st_framebuffer *stfb = ctx->draw_buffer;
 397
 398    vg_manager_validate_framebuffer(ctx);
 399
 400    if (vg_context_update_depth_stencil_rb(ctx, stfb->width, stfb->height))
 401       ctx->state.dirty |= DEPTH_STENCIL_DIRTY;
 402
 403    /* blend state depends on fb format */
 404    if (ctx->state.dirty & FRAMEBUFFER_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(void *ptr, enum vg_object_type type)
 418 {
 419    struct vg_object *obj = ptr;
 420    if (ptr && 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_surface *surf;
 442    struct pipe_surface surf_tmpl;
 443
 444    vg_context_update_blend_texture_view(ctx, stfb->width, stfb->height);
 445
 446    memset(&surf_tmpl, 0, sizeof(surf_tmpl));
 447    u_surface_default_template(&surf_tmpl, stfb->blend_texture_view->texture,
 448                               PIPE_BIND_RENDER_TARGET);
 449    surf = ctx->pipe->create_surface(ctx->pipe,
 450                                     stfb->blend_texture_view->texture,
 451                                     &surf_tmpl);
 452    if (surf) {
 453       util_blit_pixels_tex(ctx->blit,
 454                            src, 0, 0, stfb->width, stfb->height,
 455                            surf, 0, 0, stfb->width, stfb->height,
 456                            0.0, PIPE_TEX_MIPFILTER_NEAREST);
 457
 458       pipe_surface_reference(&surf, NULL);
 459    }
 460 }
 461
 462 struct pipe_sampler_view *vg_prepare_blend_surface(struct vg_context *ctx)
 463 {
 464    struct pipe_context *pipe = ctx->pipe;
 465    struct pipe_sampler_view *view;
 466    struct pipe_sampler_view view_templ;
 467    struct st_framebuffer *stfb = ctx->draw_buffer;
 468    struct st_renderbuffer *strb = stfb->strb;
 469
 470    vg_validate_state(ctx);
 471
 472    u_sampler_view_default_template(&view_templ, strb->texture, strb->texture->format);
 473    view = pipe->create_sampler_view(pipe, strb->texture, &view_templ);
 474
 475    vg_prepare_blend_texture(ctx, view);
 476
 477    pipe_sampler_view_reference(&view, NULL);
 478
 479    return stfb->blend_texture_view;
 480 }
 481
 482
 483 struct pipe_sampler_view *vg_prepare_blend_surface_from_mask(struct vg_context *ctx)
 484 {
 485    struct st_framebuffer *stfb = ctx->draw_buffer;
 486
 487    vg_validate_state(ctx);
 488
 489    vg_context_update_surface_mask_view(ctx, stfb->width, stfb->height);
 490    vg_prepare_blend_texture(ctx, stfb->surface_mask_view);
 491
 492    return stfb->blend_texture_view;
 493 }
 494
 495 struct pipe_sampler_view *vg_get_surface_mask(struct vg_context *ctx)
 496 {
 497    struct st_framebuffer *stfb = ctx->draw_buffer;
 498
 499    vg_context_update_surface_mask_view(ctx, stfb->width, stfb->height);
 500
 501    return stfb->surface_mask_view;
 502 }
 503
 504 /**
 505  * A transformation from window coordinates to paint coordinates.
 506  */
 507 VGboolean vg_get_paint_matrix(struct vg_context *ctx,
 508                               const struct matrix *paint_to_user,
 509                               const struct matrix *user_to_surface,
 510                               struct matrix *mat)
 511 {
 512    struct matrix tmp;
 513
 514    /* get user-to-paint matrix */
 515    memcpy(mat, paint_to_user, sizeof(*paint_to_user));
 516    if (!matrix_invert(mat))
 517       return VG_FALSE;
 518
 519    /* get surface-to-user matrix */
 520    memcpy(&tmp, user_to_surface, sizeof(*user_to_surface));
 521    if (!matrix_invert(&tmp))
 522       return VG_FALSE;
 523
 524    matrix_mult(mat, &tmp);
 525
 526    return VG_TRUE;
 527 }