src/gallium/state_trackers/vega/vg_tracker.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 #include "vg_tracker.h"
  29 #include "mask.h"
  30
  31 #include "pipe/p_context.h"
  32 #include "util/u_inlines.h"
  33 #include "pipe/p_screen.h"
  34 #include "util/u_format.h"
  35 #include "util/u_sampler.h"
  36 #include "util/u_memory.h"
  37 #include "util/u_math.h"
  38 #include "util/u_rect.h"
  39
  40 /* advertise OpenVG support */
  41 PUBLIC const int st_api_OpenVG = 1;
  42
  43 static struct pipe_resource *
  44 create_texture(struct pipe_context *pipe, enum pipe_format format,
  45                     VGint width, VGint height)
  46 {
  47    struct pipe_resource templ;
  48
  49    memset(&templ, 0, sizeof(templ));
  50
  51    if (format != PIPE_FORMAT_NONE) {
  52       templ.format = format;
  53    }
  54    else {
  55       templ.format = PIPE_FORMAT_B8G8R8A8_UNORM;
  56    }
  57
  58    templ.target = PIPE_TEXTURE_2D;
  59    templ.width0 = width;
  60    templ.height0 = height;
  61    templ.depth0 = 1;
  62    templ.last_level = 0;
  63
  64    if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 1)) {
  65       templ.bind = PIPE_BIND_DEPTH_STENCIL;
  66    } else {
  67       templ.bind = (PIPE_BIND_DISPLAY_TARGET |
  68                     PIPE_BIND_RENDER_TARGET |
  69                     PIPE_BIND_SAMPLER_VIEW);
  70    }
  71
  72    return pipe->screen->resource_create(pipe->screen, &templ);
  73 }
  74
  75 static struct pipe_sampler_view *
  76 create_tex_and_view(struct pipe_context *pipe, enum pipe_format format,
  77                     VGint width, VGint height)
  78 {
  79    struct pipe_resource *texture;
  80    struct pipe_sampler_view view_templ;
  81    struct pipe_sampler_view *view;
  82
  83    texture = create_texture(pipe, format, width, height);
  84
  85    if (!texture)
  86       return NULL;
  87
  88    u_sampler_view_default_template(&view_templ, texture, texture->format);
  89    view = pipe->create_sampler_view(pipe, texture, &view_templ);
  90    /* want the texture to go away if the view is freed */
  91    pipe_resource_reference(&texture, NULL);
  92
  93    return view;
  94 }
  95
  96 /**
  97  * Allocate a renderbuffer for a an on-screen window (not a user-created
  98  * renderbuffer).  The window system code determines the format.
  99  */
 100 static struct st_renderbuffer *
 101 st_new_renderbuffer_fb(enum pipe_format format)
 102 {
 103    struct st_renderbuffer *strb;
 104
 105    strb = CALLOC_STRUCT(st_renderbuffer);
 106    if (!strb) {
 107       /*_vega_error(NULL, VG_OUT_OF_MEMORY, "creating renderbuffer");*/
 108       return NULL;
 109    }
 110
 111    strb->format = format;
 112
 113    return strb;
 114 }
 115
 116
 117 /**
 118  * This is called to allocate the original drawing surface, and
 119  * during window resize.
 120  */
 121 static VGboolean
 122 st_renderbuffer_alloc_storage(struct vg_context * ctx,
 123                               struct st_renderbuffer *strb,
 124                               VGuint width, VGuint height)
 125 {
 126    struct pipe_context *pipe = ctx->pipe;
 127    unsigned surface_usage;
 128
 129    /* Free the old surface and texture
 130     */
 131    pipe_surface_reference(&strb->surface, NULL);
 132    pipe_resource_reference(&strb->texture, NULL);
 133
 134
 135    /* Probably need dedicated flags for surface usage too:
 136     */
 137    surface_usage = (PIPE_BIND_RENDER_TARGET  |
 138                     PIPE_BIND_BLIT_SOURCE |
 139                     PIPE_BIND_BLIT_DESTINATION);
 140
 141    strb->texture = create_texture(pipe, strb->format, width, height);
 142
 143
 144    if (!strb->texture)
 145       return FALSE;
 146
 147    strb->surface = pipe->screen->get_tex_surface(pipe->screen,
 148                                                  strb->texture,
 149                                                  0, 0, 0,
 150                                                  surface_usage);
 151    strb->width = width;
 152    strb->height = height;
 153
 154    assert(strb->surface->width == width);
 155    assert(strb->surface->height == height);
 156
 157    return strb->surface != NULL;
 158 }
 159
 160 struct vg_context * st_create_context(struct pipe_context *pipe,
 161                                       const void *visual,
 162                                       struct vg_context *share)
 163 {
 164    struct vg_context *ctx = vg_create_context(pipe, visual, share);
 165    /*debug_printf("--------- CREATE CONTEXT %p\n", ctx);*/
 166    return ctx;
 167 }
 168
 169 void st_destroy_context(struct vg_context *st)
 170 {
 171    /*debug_printf("--------- DESTROY CONTEXT %p\n", st);*/
 172    vg_destroy_context(st);
 173 }
 174
 175 void st_copy_context_state(struct vg_context *dst, struct vg_context *src,
 176                            uint mask)
 177 {
 178    fprintf(stderr, "FIXME: %s\n", __FUNCTION__);
 179 }
 180
 181 void st_get_framebuffer_dimensions(struct st_framebuffer *stfb,
 182                                    uint *width,
 183                                    uint *height)
 184 {
 185    *width = stfb->strb->width;
 186    *height = stfb->strb->height;
 187 }
 188
 189 struct st_framebuffer * st_create_framebuffer(const void *visual,
 190                                               enum pipe_format colorFormat,
 191                                               enum pipe_format depthFormat,
 192                                               enum pipe_format stencilFormat,
 193                                               uint width, uint height,
 194                                               void *privateData)
 195 {
 196    struct st_framebuffer *stfb = CALLOC_STRUCT(st_framebuffer);
 197    if (stfb) {
 198       struct st_renderbuffer *rb =
 199          st_new_renderbuffer_fb(colorFormat);
 200       stfb->strb = rb;
 201 #if 0
 202       if (doubleBuffer) {
 203          struct st_renderbuffer *rb =
 204             st_new_renderbuffer_fb(colorFormat);
 205       }
 206 #endif
 207
 208       /* we want to combine the depth/stencil */
 209       if (stencilFormat == depthFormat)
 210          stfb->dsrb = st_new_renderbuffer_fb(stencilFormat);
 211       else
 212          stfb->dsrb = st_new_renderbuffer_fb(PIPE_FORMAT_Z24_UNORM_S8_USCALED);
 213
 214       /*### currently we always allocate it but it's possible it's
 215         not necessary if EGL_ALPHA_MASK_SIZE was 0
 216       */
 217       stfb->alpha_mask_view = NULL;
 218
 219       stfb->width = width;
 220       stfb->height = height;
 221       stfb->privateData = privateData;
 222    }
 223
 224    return stfb;
 225 }
 226
 227 static void setup_new_alpha_mask(struct vg_context *ctx,
 228                                  struct st_framebuffer *stfb,
 229                                  uint width, uint height)
 230 {
 231    struct pipe_context *pipe = ctx->pipe;
 232    struct pipe_sampler_view *old_sampler_view = stfb->alpha_mask_view;
 233
 234    /*
 235      we use PIPE_FORMAT_B8G8R8A8_UNORM because we want to render to
 236      this texture and use it as a sampler, so while this wastes some
 237      space it makes both of those a lot simpler
 238    */
 239    stfb->alpha_mask_view =
 240       create_tex_and_view(pipe, PIPE_FORMAT_B8G8R8A8_UNORM, width, height);
 241
 242    if (!stfb->alpha_mask_view) {
 243       if (old_sampler_view)
 244          pipe_sampler_view_reference(&old_sampler_view, NULL);
 245       return;
 246    }
 247
 248    vg_validate_state(ctx);
 249
 250    /* alpha mask starts with 1.f alpha */
 251    mask_fill(0, 0, width, height, 1.f);
 252
 253    /* if we had an old surface copy it over */
 254    if (old_sampler_view) {
 255       struct pipe_surface *surface = pipe->screen->get_tex_surface(
 256          pipe->screen,
 257          stfb->alpha_mask_view->texture,
 258          0, 0, 0,
 259          PIPE_BIND_RENDER_TARGET |
 260          PIPE_BIND_BLIT_DESTINATION);
 261       struct pipe_surface *old_surface = pipe->screen->get_tex_surface(
 262          pipe->screen,
 263          old_sampler_view->texture,
 264          0, 0, 0,
 265          PIPE_BIND_BLIT_SOURCE);
 266       if (pipe->surface_copy) {
 267          pipe->surface_copy(pipe,
 268                             surface,
 269                             0, 0,
 270                             old_surface,
 271                             0, 0,
 272                             MIN2(old_surface->width, width),
 273                             MIN2(old_surface->height, height));
 274       } else {
 275          util_surface_copy(pipe, FALSE,
 276                            surface,
 277                            0, 0,
 278                            old_surface,
 279                            0, 0,
 280                            MIN2(old_surface->width, width),
 281                            MIN2(old_surface->height, height));
 282       }
 283       if (surface)
 284          pipe_surface_reference(&surface, NULL);
 285       if (old_surface)
 286          pipe_surface_reference(&old_surface, NULL);
 287    }
 288
 289    /* Free the old texture
 290     */
 291    if (old_sampler_view)
 292       pipe_sampler_view_reference(&old_sampler_view, NULL);
 293 }
 294
 295 void st_resize_framebuffer(struct st_framebuffer *stfb,
 296                            uint width, uint height)
 297 {
 298    struct vg_context *ctx = vg_current_context();
 299    struct st_renderbuffer *strb = stfb->strb;
 300    struct pipe_framebuffer_state *state;
 301
 302    if (!ctx)
 303       return;
 304
 305    state = &ctx->state.g3d.fb;
 306
 307    /* If this is a noop, exit early and don't do the clear, etc below.
 308     */
 309    if (stfb->width == width &&
 310        stfb->height == height &&
 311        state->zsbuf)
 312       return;
 313
 314    stfb->width = width;
 315    stfb->height = height;
 316
 317    if (strb->width != width || strb->height != height)
 318       st_renderbuffer_alloc_storage(ctx, strb,
 319                                  width, height);
 320
 321    if (stfb->dsrb->width != width || stfb->dsrb->height != height)
 322       st_renderbuffer_alloc_storage(ctx, stfb->dsrb,
 323                                  width, height);
 324
 325    {
 326       VGuint i;
 327
 328       memset(state, 0, sizeof(struct pipe_framebuffer_state));
 329
 330       state->width  = width;
 331       state->height = height;
 332
 333       state->nr_cbufs = 1;
 334       state->cbufs[0] = strb->surface;
 335       for (i = 1; i < PIPE_MAX_COLOR_BUFS; ++i)
 336          state->cbufs[i] = 0;
 337
 338       state->zsbuf = stfb->dsrb->surface;
 339
 340       cso_set_framebuffer(ctx->cso_context, state);
 341    }
 342
 343    ctx->state.dirty |= VIEWPORT_DIRTY;
 344    ctx->state.dirty |= DEPTH_STENCIL_DIRTY;/*to reset the scissors*/
 345
 346    ctx->pipe->clear(ctx->pipe, PIPE_CLEAR_DEPTHSTENCIL,
 347                     NULL, 0.0, 0);
 348
 349    /* we need all the other state already set */
 350
 351    setup_new_alpha_mask(ctx, stfb, width, height);
 352
 353    pipe_sampler_view_reference( &stfb->blend_texture_view, NULL );
 354    stfb->blend_texture_view = create_tex_and_view(ctx->pipe, PIPE_FORMAT_B8G8R8A8_UNORM,
 355                                                   width, height);
 356 }
 357
 358 void st_set_framebuffer_surface(struct st_framebuffer *stfb,
 359                                 uint surfIndex, struct pipe_surface *surf)
 360 {
 361    struct st_renderbuffer *rb = stfb->strb;
 362
 363    /* unreference existing surfaces */
 364    pipe_surface_reference( &rb->surface, NULL );
 365    pipe_resource_reference( &rb->texture, NULL );
 366
 367    /* reference new ones */
 368    pipe_surface_reference( &rb->surface, surf );
 369    pipe_resource_reference( &rb->texture, surf->texture );
 370
 371    rb->width  = surf->width;
 372    rb->height = surf->height;
 373 }
 374
 375 int st_get_framebuffer_surface(struct st_framebuffer *stfb,
 376                                uint surfIndex, struct pipe_surface **surf)
 377 {
 378    struct st_renderbuffer *rb = stfb->strb;
 379    *surf = rb->surface;
 380    return VG_TRUE;
 381 }
 382
 383 int st_get_framebuffer_texture(struct st_framebuffer *stfb,
 384                                uint surfIndex, struct pipe_resource **tex)
 385 {
 386    struct st_renderbuffer *rb = stfb->strb;
 387    *tex = rb->texture;
 388    return VG_TRUE;
 389 }
 390
 391 void * st_framebuffer_private(struct st_framebuffer *stfb)
 392 {
 393    return stfb->privateData;
 394 }
 395
 396 void st_unreference_framebuffer(struct st_framebuffer *stfb)
 397 {
 398    /* FIXME */
 399 }
 400
 401 boolean st_make_current(struct vg_context *st,
 402                         struct st_framebuffer *draw,
 403                         struct st_framebuffer *read,
 404                         void *winsys_drawable_handle)
 405 {
 406    vg_set_current_context(st);
 407    if (st)
 408       st->draw_buffer = draw;
 409    return VG_TRUE;
 410 }
 411
 412 struct vg_context *st_get_current(void)
 413 {
 414    return vg_current_context();
 415 }
 416
 417 void st_flush(struct vg_context *st, uint pipeFlushFlags,
 418               struct pipe_fence_handle **fence)
 419 {
 420    st->pipe->flush(st->pipe, pipeFlushFlags, fence);
 421 }
 422
 423 void st_finish(struct vg_context *st)
 424 {
 425    struct pipe_fence_handle *fence = NULL;
 426
 427    st_flush(st, PIPE_FLUSH_RENDER_CACHE, &fence);
 428
 429    st->pipe->screen->fence_finish(st->pipe->screen, fence, 0);
 430    st->pipe->screen->fence_reference(st->pipe->screen, &fence, NULL);
 431 }
 432
 433 void st_notify_swapbuffers(struct st_framebuffer *stfb)
 434 {
 435    struct vg_context *ctx = vg_current_context();
 436    if (ctx && ctx->draw_buffer == stfb) {
 437       st_flush(ctx,
 438                PIPE_FLUSH_RENDER_CACHE |
 439                PIPE_FLUSH_SWAPBUFFERS |
 440                PIPE_FLUSH_FRAME,
 441                NULL);
 442    }
 443 }
 444
 445 void st_notify_swapbuffers_complete(struct st_framebuffer *stfb)
 446 {
 447 }
 448
 449 int st_bind_texture_surface(struct pipe_surface *ps, int target, int level,
 450                             enum pipe_format format)
 451 {
 452    return 0;
 453 }
 454
 455 int st_unbind_texture_surface(struct pipe_surface *ps, int target, int level)
 456 {
 457    return 0;
 458 }
 459
 460 st_proc st_get_proc_address(const char *procname)
 461 {
 462    return NULL;
 463 }