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 "pipe/p_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 static struct pipe_texture *
  40 create_texture(struct pipe_context *pipe, enum pipe_format format,
  41                VGint width, VGint height)
  42 {
  43    struct pipe_texture templ;
  44
  45    memset(&templ, 0, sizeof(templ));
  46
  47    if (format != PIPE_FORMAT_NONE) {
  48       templ.format = format;
  49    }
  50    else {
  51       templ.format = PIPE_FORMAT_A8R8G8B8_UNORM;
  52    }
  53
  54    templ.target = PIPE_TEXTURE_2D;
  55    templ.width0 = width;
  56    templ.height0 = height;
  57    templ.depth0 = 1;
  58    templ.last_level = 0;
  59
  60    if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 1)) {
  61       templ.tex_usage = PIPE_TEXTURE_USAGE_DEPTH_STENCIL;
  62    } else {
  63       templ.tex_usage = (PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
  64                          PIPE_TEXTURE_USAGE_RENDER_TARGET |
  65                          PIPE_TEXTURE_USAGE_SAMPLER);
  66    }
  67
  68    return pipe->screen->texture_create(pipe->screen, &templ);
  69 }
  70
  71 /**
  72  * Allocate a renderbuffer for a an on-screen window (not a user-created
  73  * renderbuffer).  The window system code determines the format.
  74  */
  75 static struct st_renderbuffer *
  76 st_new_renderbuffer_fb(enum pipe_format format)
  77 {
  78    struct st_renderbuffer *strb;
  79
  80    strb = CALLOC_STRUCT(st_renderbuffer);
  81    if (!strb) {
  82       /*_vega_error(NULL, VG_OUT_OF_MEMORY, "creating renderbuffer");*/
  83       return NULL;
  84    }
  85
  86    strb->format = format;
  87
  88    return strb;
  89 }
  90
  91
  92 /**
  93  * This is called to allocate the original drawing surface, and
  94  * during window resize.
  95  */
  96 static VGboolean
  97 st_renderbuffer_alloc_storage(struct vg_context * ctx,
  98                               struct st_renderbuffer *strb,
  99                               VGuint width, VGuint height)
 100 {
 101    struct pipe_context *pipe = ctx->pipe;
 102    unsigned surface_usage;
 103
 104    /* Free the old surface and texture
 105     */
 106    pipe_surface_reference(&strb->surface, NULL);
 107    pipe_texture_reference(&strb->texture, NULL);
 108
 109
 110    /* Probably need dedicated flags for surface usage too:
 111     */
 112    surface_usage = (PIPE_BUFFER_USAGE_GPU_READ  |
 113                     PIPE_BUFFER_USAGE_GPU_WRITE);
 114
 115    strb->texture = create_texture(pipe, strb->format,
 116                                   width, height);
 117
 118    if (!strb->texture)
 119       return FALSE;
 120
 121    strb->surface = pipe->screen->get_tex_surface(pipe->screen,
 122                                                  strb->texture,
 123                                                  0, 0, 0,
 124                                                  surface_usage);
 125    strb->width = width;
 126    strb->height = height;
 127
 128    assert(strb->surface->width == width);
 129    assert(strb->surface->height == height);
 130
 131    return strb->surface != NULL;
 132 }
 133
 134 struct vg_context * st_create_context(struct pipe_context *pipe,
 135                                       const void *visual,
 136                                       struct vg_context *share)
 137 {
 138    struct vg_context *ctx = vg_create_context(pipe, visual, share);
 139    /*debug_printf("--------- CREATE CONTEXT %p\n", ctx);*/
 140    return ctx;
 141 }
 142
 143 void st_destroy_context(struct vg_context *st)
 144 {
 145    /*debug_printf("--------- DESTROY CONTEXT %p\n", st);*/
 146    vg_destroy_context(st);
 147 }
 148
 149 void st_copy_context_state(struct vg_context *dst, struct vg_context *src,
 150                            uint mask)
 151 {
 152    fprintf(stderr, "FIXME: %s\n", __FUNCTION__);
 153 }
 154
 155 void st_get_framebuffer_dimensions(struct st_framebuffer *stfb,
 156                                    uint *width,
 157                                    uint *height)
 158 {
 159    *width = stfb->strb->width;
 160    *height = stfb->strb->height;
 161 }
 162
 163 struct st_framebuffer * st_create_framebuffer(const void *visual,
 164                                               enum pipe_format colorFormat,
 165                                               enum pipe_format depthFormat,
 166                                               enum pipe_format stencilFormat,
 167                                               uint width, uint height,
 168                                               void *privateData)
 169 {
 170    struct st_framebuffer *stfb = CALLOC_STRUCT(st_framebuffer);
 171    if (stfb) {
 172       struct st_renderbuffer *rb =
 173          st_new_renderbuffer_fb(colorFormat);
 174       stfb->strb = rb;
 175 #if 0
 176       if (doubleBuffer) {
 177          struct st_renderbuffer *rb =
 178             st_new_renderbuffer_fb(colorFormat);
 179       }
 180 #endif
 181
 182       /* we want to combine the depth/stencil */
 183       if (stencilFormat == depthFormat)
 184          stfb->dsrb = st_new_renderbuffer_fb(stencilFormat);
 185       else
 186          stfb->dsrb = st_new_renderbuffer_fb(PIPE_FORMAT_S8Z24_UNORM);
 187
 188       /*### currently we always allocate it but it's possible it's
 189         not necessary if EGL_ALPHA_MASK_SIZE was 0
 190       */
 191       stfb->alpha_mask = 0;
 192
 193       stfb->init_width = width;
 194       stfb->init_height = height;
 195       stfb->privateData = privateData;
 196    }
 197
 198    return stfb;
 199 }
 200
 201 static void setup_new_alpha_mask(struct vg_context *ctx,
 202                                  struct st_framebuffer *stfb,
 203                                  uint width, uint height)
 204 {
 205    struct pipe_context *pipe = ctx->pipe;
 206    struct pipe_texture *old_texture = stfb->alpha_mask;
 207
 208    /*
 209      we use PIPE_FORMAT_A8R8G8B8_UNORM because we want to render to
 210      this texture and use it as a sampler, so while this wastes some
 211      space it makes both of those a lot simpler
 212    */
 213    stfb->alpha_mask =
 214       create_texture(pipe, PIPE_FORMAT_A8R8G8B8_UNORM, width, height);
 215
 216    if (!stfb->alpha_mask) {
 217       if (old_texture)
 218          pipe_texture_reference(&old_texture, NULL);
 219       return;
 220    }
 221
 222    vg_validate_state(ctx);
 223
 224    /* alpha mask starts with 1.f alpha */
 225    mask_fill(0, 0, width, height, 1.f);
 226
 227    /* if we had an old surface copy it over */
 228    if (old_texture) {
 229       struct pipe_surface *surface = pipe->screen->get_tex_surface(
 230          pipe->screen,
 231          stfb->alpha_mask,
 232          0, 0, 0,
 233          PIPE_BUFFER_USAGE_GPU_WRITE);
 234       struct pipe_surface *old_surface = pipe->screen->get_tex_surface(
 235          pipe->screen,
 236          old_texture,
 237          0, 0, 0,
 238          PIPE_BUFFER_USAGE_GPU_READ);
 239       if (pipe->surface_copy) {
 240          pipe->surface_copy(pipe,
 241                             surface,
 242                             0, 0,
 243                             old_surface,
 244                             0, 0,
 245                             MIN2(old_surface->width, width),
 246                             MIN2(old_surface->height, height));
 247       } else {
 248          util_surface_copy(pipe, FALSE,
 249                            surface,
 250                            0, 0,
 251                            old_surface,
 252                            0, 0,
 253                            MIN2(old_surface->width, width),
 254                            MIN2(old_surface->height, height));
 255       }
 256       if (surface)
 257          pipe_surface_reference(&surface, NULL);
 258       if (old_surface)
 259          pipe_surface_reference(&old_surface, NULL);
 260    }
 261
 262    /* Free the old texture
 263     */
 264    if (old_texture)
 265       pipe_texture_reference(&old_texture, NULL);
 266 }
 267
 268 void st_resize_framebuffer(struct st_framebuffer *stfb,
 269                            uint width, uint height)
 270 {
 271    struct vg_context *ctx = vg_current_context();
 272    struct st_renderbuffer *strb = stfb->strb;
 273    struct pipe_framebuffer_state *state;
 274
 275    if (!ctx)
 276       return;
 277
 278    state = &ctx->state.g3d.fb;
 279
 280    /* If this is a noop, exit early and don't do the clear, etc below.
 281     */
 282    if (strb->width == width &&
 283        strb->height == height &&
 284        state->zsbuf)
 285       return;
 286
 287    if (strb->width != width || strb->height != height)
 288       st_renderbuffer_alloc_storage(ctx, strb,
 289                                  width, height);
 290
 291    if (stfb->dsrb->width != width || stfb->dsrb->height != height)
 292       st_renderbuffer_alloc_storage(ctx, stfb->dsrb,
 293                                  width, height);
 294
 295    {
 296       VGuint i;
 297
 298       memset(state, 0, sizeof(struct pipe_framebuffer_state));
 299
 300       state->width  = width;
 301       state->height = height;
 302
 303       state->nr_cbufs = 1;
 304       state->cbufs[0] = strb->surface;
 305       for (i = 1; i < PIPE_MAX_COLOR_BUFS; ++i)
 306          state->cbufs[i] = 0;
 307
 308       state->zsbuf = stfb->dsrb->surface;
 309
 310       cso_set_framebuffer(ctx->cso_context, state);
 311    }
 312
 313    ctx->state.dirty |= VIEWPORT_DIRTY;
 314    ctx->state.dirty |= DEPTH_STENCIL_DIRTY;/*to reset the scissors*/
 315
 316    ctx->pipe->clear(ctx->pipe, PIPE_CLEAR_DEPTHSTENCIL,
 317                     NULL, 0.0, 0);
 318
 319    /* we need all the other state already set */
 320
 321    setup_new_alpha_mask(ctx, stfb, width, height);
 322
 323    pipe_texture_reference( &stfb->blend_texture, NULL );
 324    stfb->blend_texture = create_texture(ctx->pipe, PIPE_FORMAT_A8R8G8B8_UNORM,
 325                                         width, height);
 326 }
 327
 328 void st_set_framebuffer_surface(struct st_framebuffer *stfb,
 329                                 uint surfIndex, struct pipe_surface *surf)
 330 {
 331    struct st_renderbuffer *rb = stfb->strb;
 332
 333    /* unreference existing surfaces */
 334    pipe_surface_reference( &rb->surface, NULL );
 335    pipe_texture_reference( &rb->texture, NULL );
 336
 337    /* reference new ones */
 338    pipe_surface_reference( &rb->surface, surf );
 339    pipe_texture_reference( &rb->texture, surf->texture );
 340
 341    rb->width  = surf->width;
 342    rb->height = surf->height;
 343 }
 344
 345 int st_get_framebuffer_surface(struct st_framebuffer *stfb,
 346                                uint surfIndex, struct pipe_surface **surf)
 347 {
 348    struct st_renderbuffer *rb = stfb->strb;
 349    *surf = rb->surface;
 350    return VG_TRUE;
 351 }
 352
 353 int st_get_framebuffer_texture(struct st_framebuffer *stfb,
 354                                uint surfIndex, struct pipe_texture **tex)
 355 {
 356    struct st_renderbuffer *rb = stfb->strb;
 357    *tex = rb->texture;
 358    return VG_TRUE;
 359 }
 360
 361 void * st_framebuffer_private(struct st_framebuffer *stfb)
 362 {
 363    return stfb->privateData;
 364 }
 365
 366 void st_unreference_framebuffer(struct st_framebuffer *stfb)
 367 {
 368    /* FIXME */
 369 }
 370
 371 void st_make_current(struct vg_context *st,
 372                      struct st_framebuffer *draw,
 373                      struct st_framebuffer *read)
 374 {
 375    vg_set_current_context(st);
 376    if (st) {
 377       st->draw_buffer = draw;
 378    }
 379 }
 380
 381 struct vg_context *st_get_current(void)
 382 {
 383    return vg_current_context();
 384 }
 385
 386 void st_flush(struct vg_context *st, uint pipeFlushFlags,
 387               struct pipe_fence_handle **fence)
 388 {
 389    st->pipe->flush(st->pipe, pipeFlushFlags, fence);
 390 }
 391
 392 void st_finish(struct vg_context *st)
 393 {
 394    struct pipe_fence_handle *fence = NULL;
 395
 396    st_flush(st, PIPE_FLUSH_RENDER_CACHE, &fence);
 397
 398    st->pipe->screen->fence_finish(st->pipe->screen, fence, 0);
 399    st->pipe->screen->fence_reference(st->pipe->screen, &fence, NULL);
 400 }
 401
 402 void st_notify_swapbuffers(struct st_framebuffer *stfb)
 403 {
 404    struct vg_context *ctx = vg_current_context();
 405    if (ctx && ctx->draw_buffer == stfb) {
 406       st_flush(ctx,
 407                PIPE_FLUSH_RENDER_CACHE |
 408                PIPE_FLUSH_SWAPBUFFERS |
 409                PIPE_FLUSH_FRAME,
 410                NULL);
 411    }
 412 }
 413
 414 void st_notify_swapbuffers_complete(struct st_framebuffer *stfb)
 415 {
 416 }
 417
 418 int st_bind_texture_surface(struct pipe_surface *ps, int target, int level,
 419                             enum pipe_format format)
 420 {
 421    return 0;
 422 }
 423
 424 int st_unbind_texture_surface(struct pipe_surface *ps, int target, int level)
 425 {
 426    return 0;
 427 }