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_texture *
  44 create_texture(struct pipe_context *pipe, enum pipe_format format,
  45                     VGint width, VGint height)
  46 {
  47    struct pipe_texture 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.tex_usage = PIPE_TEXTURE_USAGE_DEPTH_STENCIL;
  66    } else {
  67       templ.tex_usage = (PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
  68                          PIPE_TEXTURE_USAGE_RENDER_TARGET |
  69                          PIPE_TEXTURE_USAGE_SAMPLER);
  70    }
  71
  72    return pipe->screen->texture_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_texture *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_texture_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_texture_reference(&strb->texture, NULL);
 133
 134
 135    /* Probably need dedicated flags for surface usage too:
 136     */
 137    surface_usage = (PIPE_BUFFER_USAGE_GPU_READ  |
 138                     PIPE_BUFFER_USAGE_GPU_WRITE);
 139
 140    strb->texture = create_texture(pipe, strb->format, width, height);
 141
 142
 143    if (!strb->texture)
 144       return FALSE;
 145
 146    strb->surface = pipe->screen->get_tex_surface(pipe->screen,
 147                                                  strb->texture,
 148                                                  0, 0, 0,
 149                                                  surface_usage);
 150    strb->width = width;
 151    strb->height = height;
 152
 153    assert(strb->surface->width == width);
 154    assert(strb->surface->height == height);
 155
 156    return strb->surface != NULL;
 157 }
 158
 159 struct vg_context * st_create_context(struct pipe_context *pipe,
 160                                       const void *visual,
 161                                       struct vg_context *share)
 162 {
 163    struct vg_context *ctx = vg_create_context(pipe, visual, share);
 164    /*debug_printf("--------- CREATE CONTEXT %p\n", ctx);*/
 165    return ctx;
 166 }
 167
 168 void st_destroy_context(struct vg_context *st)
 169 {
 170    /*debug_printf("--------- DESTROY CONTEXT %p\n", st);*/
 171    vg_destroy_context(st);
 172 }
 173
 174 void st_copy_context_state(struct vg_context *dst, struct vg_context *src,
 175                            uint mask)
 176 {
 177    fprintf(stderr, "FIXME: %s\n", __FUNCTION__);
 178 }
 179
 180 void st_get_framebuffer_dimensions(struct st_framebuffer *stfb,
 181                                    uint *width,
 182                                    uint *height)
 183 {
 184    *width = stfb->strb->width;
 185    *height = stfb->strb->height;
 186 }
 187
 188 struct st_framebuffer * st_create_framebuffer(const void *visual,
 189                                               enum pipe_format colorFormat,
 190                                               enum pipe_format depthFormat,
 191                                               enum pipe_format stencilFormat,
 192                                               uint width, uint height,
 193                                               void *privateData)
 194 {
 195    struct st_framebuffer *stfb = CALLOC_STRUCT(st_framebuffer);
 196    if (stfb) {
 197       struct st_renderbuffer *rb =
 198          st_new_renderbuffer_fb(colorFormat);
 199       stfb->strb = rb;
 200 #if 0
 201       if (doubleBuffer) {
 202          struct st_renderbuffer *rb =
 203             st_new_renderbuffer_fb(colorFormat);
 204       }
 205 #endif
 206
 207       /* we want to combine the depth/stencil */
 208       if (stencilFormat == depthFormat)
 209          stfb->dsrb = st_new_renderbuffer_fb(stencilFormat);
 210       else
 211          stfb->dsrb = st_new_renderbuffer_fb(PIPE_FORMAT_Z24_UNORM_S8_USCALED);
 212
 213       /*### currently we always allocate it but it's possible it's
 214         not necessary if EGL_ALPHA_MASK_SIZE was 0
 215       */
 216       stfb->alpha_mask_view = NULL;
 217
 218       stfb->width = width;
 219       stfb->height = height;
 220       stfb->privateData = privateData;
 221    }
 222
 223    return stfb;
 224 }
 225
 226 static void setup_new_alpha_mask(struct vg_context *ctx,
 227                                  struct st_framebuffer *stfb,
 228                                  uint width, uint height)
 229 {
 230    struct pipe_context *pipe = ctx->pipe;
 231    struct pipe_sampler_view *old_sampler_view = stfb->alpha_mask_view;
 232
 233    /*
 234      we use PIPE_FORMAT_B8G8R8A8_UNORM because we want to render to
 235      this texture and use it as a sampler, so while this wastes some
 236      space it makes both of those a lot simpler
 237    */
 238    stfb->alpha_mask_view =
 239       create_tex_and_view(pipe, PIPE_FORMAT_B8G8R8A8_UNORM, width, height);
 240
 241    if (!stfb->alpha_mask_view) {
 242       if (old_sampler_view)
 243          pipe_sampler_view_reference(&old_sampler_view, NULL);
 244       return;
 245    }
 246
 247    vg_validate_state(ctx);
 248
 249    /* alpha mask starts with 1.f alpha */
 250    mask_fill(0, 0, width, height, 1.f);
 251
 252    /* if we had an old surface copy it over */
 253    if (old_sampler_view) {
 254       struct pipe_surface *surface = pipe->screen->get_tex_surface(
 255          pipe->screen,
 256          stfb->alpha_mask_view->texture,
 257          0, 0, 0,
 258          PIPE_BUFFER_USAGE_GPU_WRITE);
 259       struct pipe_surface *old_surface = pipe->screen->get_tex_surface(
 260          pipe->screen,
 261          old_sampler_view->texture,
 262          0, 0, 0,
 263          PIPE_BUFFER_USAGE_GPU_READ);
 264       if (pipe->surface_copy) {
 265          pipe->surface_copy(pipe,
 266                             surface,
 267                             0, 0,
 268                             old_surface,
 269                             0, 0,
 270                             MIN2(old_surface->width, width),
 271                             MIN2(old_surface->height, height));
 272       } else {
 273          util_surface_copy(pipe, FALSE,
 274                            surface,
 275                            0, 0,
 276                            old_surface,
 277                            0, 0,
 278                            MIN2(old_surface->width, width),
 279                            MIN2(old_surface->height, height));
 280       }
 281       if (surface)
 282          pipe_surface_reference(&surface, NULL);
 283       if (old_surface)
 284          pipe_surface_reference(&old_surface, NULL);
 285    }
 286
 287    /* Free the old texture
 288     */
 289    if (old_sampler_view)
 290       pipe_sampler_view_reference(&old_sampler_view, NULL);
 291 }
 292
 293 void st_resize_framebuffer(struct st_framebuffer *stfb,
 294                            uint width, uint height)
 295 {
 296    struct vg_context *ctx = vg_current_context();
 297    struct st_renderbuffer *strb = stfb->strb;
 298    struct pipe_framebuffer_state *state;
 299
 300    if (!ctx)
 301       return;
 302
 303    state = &ctx->state.g3d.fb;
 304
 305    /* If this is a noop, exit early and don't do the clear, etc below.
 306     */
 307    if (stfb->width == width &&
 308        stfb->height == height &&
 309        state->zsbuf)
 310       return;
 311
 312    stfb->width = width;
 313    stfb->height = height;
 314
 315    if (strb->width != width || strb->height != height)
 316       st_renderbuffer_alloc_storage(ctx, strb,
 317                                  width, height);
 318
 319    if (stfb->dsrb->width != width || stfb->dsrb->height != height)
 320       st_renderbuffer_alloc_storage(ctx, stfb->dsrb,
 321                                  width, height);
 322
 323    {
 324       VGuint i;
 325
 326       memset(state, 0, sizeof(struct pipe_framebuffer_state));
 327
 328       state->width  = width;
 329       state->height = height;
 330
 331       state->nr_cbufs = 1;
 332       state->cbufs[0] = strb->surface;
 333       for (i = 1; i < PIPE_MAX_COLOR_BUFS; ++i)
 334          state->cbufs[i] = 0;
 335
 336       state->zsbuf = stfb->dsrb->surface;
 337
 338       cso_set_framebuffer(ctx->cso_context, state);
 339    }
 340
 341    ctx->state.dirty |= VIEWPORT_DIRTY;
 342    ctx->state.dirty |= DEPTH_STENCIL_DIRTY;/*to reset the scissors*/
 343
 344    ctx->pipe->clear(ctx->pipe, PIPE_CLEAR_DEPTHSTENCIL,
 345                     NULL, 0.0, 0);
 346
 347    /* we need all the other state already set */
 348
 349    setup_new_alpha_mask(ctx, stfb, width, height);
 350
 351    pipe_sampler_view_reference( &stfb->blend_texture_view, NULL );
 352    stfb->blend_texture_view = create_tex_and_view(ctx->pipe, PIPE_FORMAT_B8G8R8A8_UNORM,
 353                                                   width, height);
 354 }
 355
 356 void st_set_framebuffer_surface(struct st_framebuffer *stfb,
 357                                 uint surfIndex, struct pipe_surface *surf)
 358 {
 359    struct st_renderbuffer *rb = stfb->strb;
 360
 361    /* unreference existing surfaces */
 362    pipe_surface_reference( &rb->surface, NULL );
 363    pipe_texture_reference( &rb->texture, NULL );
 364
 365    /* reference new ones */
 366    pipe_surface_reference( &rb->surface, surf );
 367    pipe_texture_reference( &rb->texture, surf->texture );
 368
 369    rb->width  = surf->width;
 370    rb->height = surf->height;
 371 }
 372
 373 int st_get_framebuffer_surface(struct st_framebuffer *stfb,
 374                                uint surfIndex, struct pipe_surface **surf)
 375 {
 376    struct st_renderbuffer *rb = stfb->strb;
 377    *surf = rb->surface;
 378    return VG_TRUE;
 379 }
 380
 381 int st_get_framebuffer_texture(struct st_framebuffer *stfb,
 382                                uint surfIndex, struct pipe_texture **tex)
 383 {
 384    struct st_renderbuffer *rb = stfb->strb;
 385    *tex = rb->texture;
 386    return VG_TRUE;
 387 }
 388
 389 void * st_framebuffer_private(struct st_framebuffer *stfb)
 390 {
 391    return stfb->privateData;
 392 }
 393
 394 void st_unreference_framebuffer(struct st_framebuffer *stfb)
 395 {
 396    /* FIXME */
 397 }
 398
 399 boolean st_make_current(struct vg_context *st,
 400                         struct st_framebuffer *draw,
 401                         struct st_framebuffer *read,
 402                         void *winsys_drawable_handle)
 403 {
 404    vg_set_current_context(st);
 405    if (st)
 406       st->draw_buffer = draw;
 407    return VG_TRUE;
 408 }
 409
 410 struct vg_context *st_get_current(void)
 411 {
 412    return vg_current_context();
 413 }
 414
 415 void st_flush(struct vg_context *st, uint pipeFlushFlags,
 416               struct pipe_fence_handle **fence)
 417 {
 418    st->pipe->flush(st->pipe, pipeFlushFlags, fence);
 419 }
 420
 421 void st_finish(struct vg_context *st)
 422 {
 423    struct pipe_fence_handle *fence = NULL;
 424
 425    st_flush(st, PIPE_FLUSH_RENDER_CACHE, &fence);
 426
 427    st->pipe->screen->fence_finish(st->pipe->screen, fence, 0);
 428    st->pipe->screen->fence_reference(st->pipe->screen, &fence, NULL);
 429 }
 430
 431 void st_notify_swapbuffers(struct st_framebuffer *stfb)
 432 {
 433    struct vg_context *ctx = vg_current_context();
 434    if (ctx && ctx->draw_buffer == stfb) {
 435       st_flush(ctx,
 436                PIPE_FLUSH_RENDER_CACHE |
 437                PIPE_FLUSH_SWAPBUFFERS |
 438                PIPE_FLUSH_FRAME,
 439                NULL);
 440    }
 441 }
 442
 443 void st_notify_swapbuffers_complete(struct st_framebuffer *stfb)
 444 {
 445 }
 446
 447 int st_bind_texture_surface(struct pipe_surface *ps, int target, int level,
 448                             enum pipe_format format)
 449 {
 450    return 0;
 451 }
 452
 453 int st_unbind_texture_surface(struct pipe_surface *ps, int target, int level)
 454 {
 455    return 0;
 456 }
 457
 458 st_proc st_get_proc_address(const char *procname)
 459 {
 460    return NULL;
 461 }