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_memory.h"
  36 #include "util/u_math.h"
  37 #include "util/u_rect.h"
  38
  39 /* advertise OpenVG support */
  40 PUBLIC const int st_api_OpenVG = 1;
  41
  42 static struct pipe_texture *
  43 create_texture(struct pipe_context *pipe, enum pipe_format format,
  44                VGint width, VGint height)
  45 {
  46    struct pipe_texture templ;
  47
  48    memset(&templ, 0, sizeof(templ));
  49
  50    if (format != PIPE_FORMAT_NONE) {
  51       templ.format = format;
  52    }
  53    else {
  54       templ.format = PIPE_FORMAT_B8G8R8A8_UNORM;
  55    }
  56
  57    templ.target = PIPE_TEXTURE_2D;
  58    templ.width0 = width;
  59    templ.height0 = height;
  60    templ.depth0 = 1;
  61    templ.last_level = 0;
  62
  63    if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 1)) {
  64       templ.tex_usage = PIPE_TEXTURE_USAGE_DEPTH_STENCIL;
  65    } else {
  66       templ.tex_usage = (PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
  67                          PIPE_TEXTURE_USAGE_RENDER_TARGET |
  68                          PIPE_TEXTURE_USAGE_SAMPLER);
  69    }
  70
  71    return pipe->screen->texture_create(pipe->screen, &templ);
  72 }
  73
  74 /**
  75  * Allocate a renderbuffer for a an on-screen window (not a user-created
  76  * renderbuffer).  The window system code determines the format.
  77  */
  78 static struct st_renderbuffer *
  79 st_new_renderbuffer_fb(enum pipe_format format)
  80 {
  81    struct st_renderbuffer *strb;
  82
  83    strb = CALLOC_STRUCT(st_renderbuffer);
  84    if (!strb) {
  85       /*_vega_error(NULL, VG_OUT_OF_MEMORY, "creating renderbuffer");*/
  86       return NULL;
  87    }
  88
  89    strb->format = format;
  90
  91    return strb;
  92 }
  93
  94
  95 /**
  96  * This is called to allocate the original drawing surface, and
  97  * during window resize.
  98  */
  99 static VGboolean
 100 st_renderbuffer_alloc_storage(struct vg_context * ctx,
 101                               struct st_renderbuffer *strb,
 102                               VGuint width, VGuint height)
 103 {
 104    struct pipe_context *pipe = ctx->pipe;
 105    unsigned surface_usage;
 106
 107    /* Free the old surface and texture
 108     */
 109    pipe_surface_reference(&strb->surface, NULL);
 110    pipe_texture_reference(&strb->texture, NULL);
 111
 112
 113    /* Probably need dedicated flags for surface usage too:
 114     */
 115    surface_usage = (PIPE_BUFFER_USAGE_GPU_READ  |
 116                     PIPE_BUFFER_USAGE_GPU_WRITE);
 117
 118    strb->texture = create_texture(pipe, strb->format,
 119                                   width, height);
 120
 121    if (!strb->texture)
 122       return FALSE;
 123
 124    strb->surface = pipe->screen->get_tex_surface(pipe->screen,
 125                                                  strb->texture,
 126                                                  0, 0, 0,
 127                                                  surface_usage);
 128    strb->width = width;
 129    strb->height = height;
 130
 131    assert(strb->surface->width == width);
 132    assert(strb->surface->height == height);
 133
 134    return strb->surface != NULL;
 135 }
 136
 137 struct vg_context * st_create_context(struct pipe_context *pipe,
 138                                       const void *visual,
 139                                       struct vg_context *share)
 140 {
 141    struct vg_context *ctx = vg_create_context(pipe, visual, share);
 142    /*debug_printf("--------- CREATE CONTEXT %p\n", ctx);*/
 143    return ctx;
 144 }
 145
 146 void st_destroy_context(struct vg_context *st)
 147 {
 148    /*debug_printf("--------- DESTROY CONTEXT %p\n", st);*/
 149    vg_destroy_context(st);
 150 }
 151
 152 void st_copy_context_state(struct vg_context *dst, struct vg_context *src,
 153                            uint mask)
 154 {
 155    fprintf(stderr, "FIXME: %s\n", __FUNCTION__);
 156 }
 157
 158 void st_get_framebuffer_dimensions(struct st_framebuffer *stfb,
 159                                    uint *width,
 160                                    uint *height)
 161 {
 162    *width = stfb->strb->width;
 163    *height = stfb->strb->height;
 164 }
 165
 166 struct st_framebuffer * st_create_framebuffer(const void *visual,
 167                                               enum pipe_format colorFormat,
 168                                               enum pipe_format depthFormat,
 169                                               enum pipe_format stencilFormat,
 170                                               uint width, uint height,
 171                                               void *privateData)
 172 {
 173    struct st_framebuffer *stfb = CALLOC_STRUCT(st_framebuffer);
 174    if (stfb) {
 175       struct st_renderbuffer *rb =
 176          st_new_renderbuffer_fb(colorFormat);
 177       stfb->strb = rb;
 178 #if 0
 179       if (doubleBuffer) {
 180          struct st_renderbuffer *rb =
 181             st_new_renderbuffer_fb(colorFormat);
 182       }
 183 #endif
 184
 185       /* we want to combine the depth/stencil */
 186       if (stencilFormat == depthFormat)
 187          stfb->dsrb = st_new_renderbuffer_fb(stencilFormat);
 188       else
 189          stfb->dsrb = st_new_renderbuffer_fb(PIPE_FORMAT_Z24S8_UNORM);
 190
 191       /*### currently we always allocate it but it's possible it's
 192         not necessary if EGL_ALPHA_MASK_SIZE was 0
 193       */
 194       stfb->alpha_mask = 0;
 195
 196       stfb->width = width;
 197       stfb->height = height;
 198       stfb->privateData = privateData;
 199    }
 200
 201    return stfb;
 202 }
 203
 204 static void setup_new_alpha_mask(struct vg_context *ctx,
 205                                  struct st_framebuffer *stfb,
 206                                  uint width, uint height)
 207 {
 208    struct pipe_context *pipe = ctx->pipe;
 209    struct pipe_texture *old_texture = stfb->alpha_mask;
 210
 211    /*
 212      we use PIPE_FORMAT_B8G8R8A8_UNORM because we want to render to
 213      this texture and use it as a sampler, so while this wastes some
 214      space it makes both of those a lot simpler
 215    */
 216    stfb->alpha_mask =
 217       create_texture(pipe, PIPE_FORMAT_B8G8R8A8_UNORM, width, height);
 218
 219    if (!stfb->alpha_mask) {
 220       if (old_texture)
 221          pipe_texture_reference(&old_texture, NULL);
 222       return;
 223    }
 224
 225    vg_validate_state(ctx);
 226
 227    /* alpha mask starts with 1.f alpha */
 228    mask_fill(0, 0, width, height, 1.f);
 229
 230    /* if we had an old surface copy it over */
 231    if (old_texture) {
 232       struct pipe_surface *surface = pipe->screen->get_tex_surface(
 233          pipe->screen,
 234          stfb->alpha_mask,
 235          0, 0, 0,
 236          PIPE_BUFFER_USAGE_GPU_WRITE);
 237       struct pipe_surface *old_surface = pipe->screen->get_tex_surface(
 238          pipe->screen,
 239          old_texture,
 240          0, 0, 0,
 241          PIPE_BUFFER_USAGE_GPU_READ);
 242       if (pipe->surface_copy) {
 243          pipe->surface_copy(pipe,
 244                             surface,
 245                             0, 0,
 246                             old_surface,
 247                             0, 0,
 248                             MIN2(old_surface->width, width),
 249                             MIN2(old_surface->height, height));
 250       } else {
 251          util_surface_copy(pipe, FALSE,
 252                            surface,
 253                            0, 0,
 254                            old_surface,
 255                            0, 0,
 256                            MIN2(old_surface->width, width),
 257                            MIN2(old_surface->height, height));
 258       }
 259       if (surface)
 260          pipe_surface_reference(&surface, NULL);
 261       if (old_surface)
 262          pipe_surface_reference(&old_surface, NULL);
 263    }
 264
 265    /* Free the old texture
 266     */
 267    if (old_texture)
 268       pipe_texture_reference(&old_texture, NULL);
 269 }
 270
 271 void st_resize_framebuffer(struct st_framebuffer *stfb,
 272                            uint width, uint height)
 273 {
 274    struct vg_context *ctx = vg_current_context();
 275    struct st_renderbuffer *strb = stfb->strb;
 276    struct pipe_framebuffer_state *state;
 277
 278    if (!ctx)
 279       return;
 280
 281    state = &ctx->state.g3d.fb;
 282
 283    /* If this is a noop, exit early and don't do the clear, etc below.
 284     */
 285    if (stfb->width == width &&
 286        stfb->height == height &&
 287        state->zsbuf)
 288       return;
 289
 290    stfb->width = width;
 291    stfb->height = height;
 292
 293    if (strb->width != width || strb->height != height)
 294       st_renderbuffer_alloc_storage(ctx, strb,
 295                                  width, height);
 296
 297    if (stfb->dsrb->width != width || stfb->dsrb->height != height)
 298       st_renderbuffer_alloc_storage(ctx, stfb->dsrb,
 299                                  width, height);
 300
 301    {
 302       VGuint i;
 303
 304       memset(state, 0, sizeof(struct pipe_framebuffer_state));
 305
 306       state->width  = width;
 307       state->height = height;
 308
 309       state->nr_cbufs = 1;
 310       state->cbufs[0] = strb->surface;
 311       for (i = 1; i < PIPE_MAX_COLOR_BUFS; ++i)
 312          state->cbufs[i] = 0;
 313
 314       state->zsbuf = stfb->dsrb->surface;
 315
 316       cso_set_framebuffer(ctx->cso_context, state);
 317    }
 318
 319    ctx->state.dirty |= VIEWPORT_DIRTY;
 320    ctx->state.dirty |= DEPTH_STENCIL_DIRTY;/*to reset the scissors*/
 321
 322    ctx->pipe->clear(ctx->pipe, PIPE_CLEAR_DEPTHSTENCIL,
 323                     NULL, 0.0, 0);
 324
 325    /* we need all the other state already set */
 326
 327    setup_new_alpha_mask(ctx, stfb, width, height);
 328
 329    pipe_texture_reference( &stfb->blend_texture, NULL );
 330    stfb->blend_texture = create_texture(ctx->pipe, PIPE_FORMAT_B8G8R8A8_UNORM,
 331                                         width, height);
 332 }
 333
 334 void st_set_framebuffer_surface(struct st_framebuffer *stfb,
 335                                 uint surfIndex, struct pipe_surface *surf)
 336 {
 337    struct st_renderbuffer *rb = stfb->strb;
 338
 339    /* unreference existing surfaces */
 340    pipe_surface_reference( &rb->surface, NULL );
 341    pipe_texture_reference( &rb->texture, NULL );
 342
 343    /* reference new ones */
 344    pipe_surface_reference( &rb->surface, surf );
 345    pipe_texture_reference( &rb->texture, surf->texture );
 346
 347    rb->width  = surf->width;
 348    rb->height = surf->height;
 349 }
 350
 351 int st_get_framebuffer_surface(struct st_framebuffer *stfb,
 352                                uint surfIndex, struct pipe_surface **surf)
 353 {
 354    struct st_renderbuffer *rb = stfb->strb;
 355    *surf = rb->surface;
 356    return VG_TRUE;
 357 }
 358
 359 int st_get_framebuffer_texture(struct st_framebuffer *stfb,
 360                                uint surfIndex, struct pipe_texture **tex)
 361 {
 362    struct st_renderbuffer *rb = stfb->strb;
 363    *tex = rb->texture;
 364    return VG_TRUE;
 365 }
 366
 367 void * st_framebuffer_private(struct st_framebuffer *stfb)
 368 {
 369    return stfb->privateData;
 370 }
 371
 372 void st_unreference_framebuffer(struct st_framebuffer *stfb)
 373 {
 374    /* FIXME */
 375 }
 376
 377 boolean st_make_current(struct vg_context *st,
 378                         struct st_framebuffer *draw,
 379                         struct st_framebuffer *read,
 380                         void *winsys_drawable_handle)
 381 {
 382    vg_set_current_context(st);
 383    if (st)
 384       st->draw_buffer = draw;
 385    return VG_TRUE;
 386 }
 387
 388 struct vg_context *st_get_current(void)
 389 {
 390    return vg_current_context();
 391 }
 392
 393 void st_flush(struct vg_context *st, uint pipeFlushFlags,
 394               struct pipe_fence_handle **fence)
 395 {
 396    st->pipe->flush(st->pipe, pipeFlushFlags, fence);
 397 }
 398
 399 void st_finish(struct vg_context *st)
 400 {
 401    struct pipe_fence_handle *fence = NULL;
 402
 403    st_flush(st, PIPE_FLUSH_RENDER_CACHE, &fence);
 404
 405    st->pipe->screen->fence_finish(st->pipe->screen, fence, 0);
 406    st->pipe->screen->fence_reference(st->pipe->screen, &fence, NULL);
 407 }
 408
 409 void st_notify_swapbuffers(struct st_framebuffer *stfb)
 410 {
 411    struct vg_context *ctx = vg_current_context();
 412    if (ctx && ctx->draw_buffer == stfb) {
 413       st_flush(ctx,
 414                PIPE_FLUSH_RENDER_CACHE |
 415                PIPE_FLUSH_SWAPBUFFERS |
 416                PIPE_FLUSH_FRAME,
 417                NULL);
 418    }
 419 }
 420
 421 void st_notify_swapbuffers_complete(struct st_framebuffer *stfb)
 422 {
 423 }
 424
 425 int st_bind_texture_surface(struct pipe_surface *ps, int target, int level,
 426                             enum pipe_format format)
 427 {
 428    return 0;
 429 }
 430
 431 int st_unbind_texture_surface(struct pipe_surface *ps, int target, int level)
 432 {
 433    return 0;
 434 }
 435
 436 st_proc st_get_proc_address(const char *procname)
 437 {
 438    return NULL;
 439 }