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_memory.h"
  35 #include "util/u_math.h"
  36
  37 static struct pipe_texture *
  38 create_texture(struct pipe_context *pipe, enum pipe_format format,
  39                VGint width, VGint height)
  40 {
  41    struct pipe_texture templ;
  42
  43    memset(&templ, 0, sizeof(templ));
  44
  45    if (format != PIPE_FORMAT_NONE) {
  46       templ.format = format;
  47    }
  48    else {
  49       templ.format = PIPE_FORMAT_A8R8G8B8_UNORM;
  50    }
  51
  52    templ.target = PIPE_TEXTURE_2D;
  53    pf_get_block(templ.format, &templ.block);
  54    templ.width[0] = width;
  55    templ.height[0] = height;
  56    templ.depth[0] = 1;
  57    templ.last_level = 0;
  58
  59    if (pf_get_component_bits(format, PIPE_FORMAT_COMP_S)) {
  60       templ.tex_usage = PIPE_TEXTURE_USAGE_DEPTH_STENCIL;
  61    } else {
  62       templ.tex_usage = (PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
  63                          PIPE_TEXTURE_USAGE_RENDER_TARGET |
  64                          PIPE_TEXTURE_USAGE_SAMPLER);
  65    }
  66
  67    return pipe->screen->texture_create(pipe->screen, &templ);
  68 }
  69
  70 /**
  71  * Allocate a renderbuffer for a an on-screen window (not a user-created
  72  * renderbuffer).  The window system code determines the format.
  73  */
  74 static struct st_renderbuffer *
  75 st_new_renderbuffer_fb(enum pipe_format format)
  76 {
  77    struct st_renderbuffer *strb;
  78
  79    strb = CALLOC_STRUCT(st_renderbuffer);
  80    if (!strb) {
  81       /*_vega_error(NULL, VG_OUT_OF_MEMORY, "creating renderbuffer");*/
  82       return NULL;
  83    }
  84
  85    strb->format = format;
  86
  87    return strb;
  88 }
  89
  90
  91 /**
  92  * This is called to allocate the original drawing surface, and
  93  * during window resize.
  94  */
  95 static VGboolean
  96 st_renderbuffer_alloc_storage(struct vg_context * ctx,
  97                               struct st_renderbuffer *strb,
  98                               VGuint width, VGuint height)
  99 {
 100    struct pipe_context *pipe = ctx->pipe;
 101    unsigned surface_usage;
 102
 103    /* Free the old surface and texture
 104     */
 105    pipe_surface_reference(&strb->surface, NULL);
 106    pipe_texture_reference(&strb->texture, NULL);
 107
 108
 109    /* Probably need dedicated flags for surface usage too:
 110     */
 111    surface_usage = (PIPE_BUFFER_USAGE_GPU_READ  |
 112                     PIPE_BUFFER_USAGE_GPU_WRITE);
 113
 114    strb->texture = create_texture(pipe, strb->format,
 115                                   width, height);
 116
 117    if (!strb->texture)
 118       return FALSE;
 119
 120    strb->surface = pipe->screen->get_tex_surface(pipe->screen,
 121                                                  strb->texture,
 122                                                  0, 0, 0,
 123                                                  surface_usage);
 124    strb->width = width;
 125    strb->height = height;
 126
 127    assert(strb->surface->width == width);
 128    assert(strb->surface->height == height);
 129
 130    return strb->surface != NULL;
 131 }
 132
 133 struct vg_context * st_create_context(struct pipe_context *pipe,
 134                                       const void *visual,
 135                                       struct vg_context *share)
 136 {
 137    struct vg_context *ctx = vg_create_context(pipe, visual, share);
 138    /*debug_printf("--------- CREATE CONTEXT %p\n", ctx);*/
 139    return ctx;
 140 }
 141
 142 void st_destroy_context(struct vg_context *st)
 143 {
 144    /*debug_printf("--------- DESTROY CONTEXT %p\n", st);*/
 145    vg_destroy_context(st);
 146 }
 147
 148 void st_copy_context_state(struct vg_context *dst, struct vg_context *src,
 149                            uint mask)
 150 {
 151    fprintf(stderr, "FIXME: %s\n", __FUNCTION__);
 152 }
 153
 154 void st_get_framebuffer_dimensions(struct st_framebuffer *stfb,
 155                                    uint *width,
 156                                    uint *height)
 157 {
 158    *width = stfb->strb->width;
 159    *height = stfb->strb->height;
 160 }
 161
 162 struct st_framebuffer * st_create_framebuffer(const void *visual,
 163                                               enum pipe_format colorFormat,
 164                                               enum pipe_format depthFormat,
 165                                               enum pipe_format stencilFormat,
 166                                               uint width, uint height,
 167                                               void *privateData)
 168 {
 169    struct st_framebuffer *stfb = CALLOC_STRUCT(st_framebuffer);
 170    if (stfb) {
 171       struct st_renderbuffer *rb =
 172          st_new_renderbuffer_fb(colorFormat);
 173       stfb->strb = rb;
 174 #if 0
 175       if (doubleBuffer) {
 176          struct st_renderbuffer *rb =
 177             st_new_renderbuffer_fb(colorFormat);
 178       }
 179 #endif
 180
 181       /* we want to combine the depth/stencil */
 182       if (stencilFormat == depthFormat)
 183          stfb->dsrb = st_new_renderbuffer_fb(stencilFormat);
 184       else
 185          stfb->dsrb = st_new_renderbuffer_fb(PIPE_FORMAT_S8Z24_UNORM);
 186
 187       /*### currently we always allocate it but it's possible it's
 188         not necessary if EGL_ALPHA_MASK_SIZE was 0
 189       */
 190       stfb->alpha_mask = 0;
 191
 192       stfb->init_width = width;
 193       stfb->init_height = height;
 194       stfb->privateData = privateData;
 195    }
 196
 197    return stfb;
 198 }
 199
 200 static void setup_new_alpha_mask(struct vg_context *ctx,
 201                                  struct st_framebuffer *stfb,
 202                                  uint width, uint height)
 203 {
 204    struct pipe_context *pipe = ctx->pipe;
 205    struct pipe_texture *old_texture = stfb->alpha_mask;
 206
 207    /*
 208      we use PIPE_FORMAT_A8R8G8B8_UNORM because we want to render to
 209      this texture and use it as a sampler, so while this wastes some
 210      space it makes both of those a lot simpler
 211    */
 212    stfb->alpha_mask =
 213       create_texture(pipe, PIPE_FORMAT_A8R8G8B8_UNORM, width, height);
 214
 215    if (!stfb->alpha_mask) {
 216       if (old_texture)
 217          pipe_texture_reference(&old_texture, NULL);
 218       return;
 219    }
 220
 221    vg_validate_state(ctx);
 222
 223    /* alpha mask starts with 1.f alpha */
 224    mask_fill(0, 0, width, height, 1.f);
 225
 226    /* if we had an old surface copy it over */
 227    if (old_texture) {
 228       struct pipe_surface *surface = pipe->screen->get_tex_surface(
 229          pipe->screen,
 230          stfb->alpha_mask,
 231          0, 0, 0,
 232          PIPE_BUFFER_USAGE_GPU_WRITE);
 233       struct pipe_surface *old_surface = pipe->screen->get_tex_surface(
 234          pipe->screen,
 235          old_texture,
 236          0, 0, 0,
 237          PIPE_BUFFER_USAGE_GPU_READ);
 238       pipe->surface_copy(pipe,
 239                          surface,
 240                          0, 0,
 241                          old_surface,
 242                          0, 0,
 243                          MIN2(old_surface->width, width),
 244                          MIN2(old_surface->height, height));
 245       if (surface)
 246          pipe_surface_reference(&surface, NULL);
 247       if (old_surface)
 248          pipe_surface_reference(&old_surface, NULL);
 249    }
 250
 251    /* Free the old texture
 252     */
 253    if (old_texture)
 254       pipe_texture_reference(&old_texture, NULL);
 255 }
 256
 257 void st_resize_framebuffer(struct st_framebuffer *stfb,
 258                            uint width, uint height)
 259 {
 260    struct vg_context *ctx = vg_current_context();
 261    struct st_renderbuffer *strb = stfb->strb;
 262    struct pipe_framebuffer_state *state;
 263
 264    if (!ctx)
 265       return;
 266
 267    state = &ctx->state.g3d.fb;
 268
 269    /* If this is a noop, exit early and don't do the clear, etc below.
 270     */
 271    if (strb->width == width &&
 272        strb->height == height &&
 273        state->zsbuf)
 274       return;
 275
 276    if (strb->width != width || strb->height != height)
 277       st_renderbuffer_alloc_storage(ctx, strb,
 278                                  width, height);
 279
 280    if (stfb->dsrb->width != width || stfb->dsrb->height != height)
 281       st_renderbuffer_alloc_storage(ctx, stfb->dsrb,
 282                                  width, height);
 283
 284    {
 285       VGuint i;
 286
 287       memset(state, 0, sizeof(struct pipe_framebuffer_state));
 288
 289       state->width  = width;
 290       state->height = height;
 291
 292       state->nr_cbufs = 1;
 293       state->cbufs[0] = strb->surface;
 294       for (i = 1; i < PIPE_MAX_COLOR_BUFS; ++i)
 295          state->cbufs[i] = 0;
 296
 297       state->zsbuf = stfb->dsrb->surface;
 298
 299       cso_set_framebuffer(ctx->cso_context, state);
 300    }
 301
 302    ctx->state.dirty |= VIEWPORT_DIRTY;
 303    ctx->state.dirty |= DEPTH_STENCIL_DIRTY;/*to reset the scissors*/
 304
 305    ctx->pipe->clear(ctx->pipe, PIPE_CLEAR_DEPTHSTENCIL,
 306                     NULL, 0.0, 0);
 307
 308    /* we need all the other state already set */
 309
 310    setup_new_alpha_mask(ctx, stfb, width, height);
 311
 312    pipe_texture_reference( &stfb->blend_texture, NULL );
 313    stfb->blend_texture = create_texture(ctx->pipe, PIPE_FORMAT_A8R8G8B8_UNORM,
 314                                         width, height);
 315 }
 316
 317 void st_set_framebuffer_surface(struct st_framebuffer *stfb,
 318                                 uint surfIndex, struct pipe_surface *surf)
 319 {
 320    struct st_renderbuffer *rb = stfb->strb;
 321
 322    /* unreference existing surfaces */
 323    pipe_surface_reference( &rb->surface, NULL );
 324    pipe_texture_reference( &rb->texture, NULL );
 325
 326    /* reference new ones */
 327    pipe_surface_reference( &rb->surface, surf );
 328    pipe_texture_reference( &rb->texture, surf->texture );
 329
 330    rb->width  = surf->width;
 331    rb->height = surf->height;
 332 }
 333
 334 int st_get_framebuffer_surface(struct st_framebuffer *stfb,
 335                                uint surfIndex, struct pipe_surface **surf)
 336 {
 337    struct st_renderbuffer *rb = stfb->strb;
 338    *surf = rb->surface;
 339    return VG_TRUE;
 340 }
 341
 342 int st_get_framebuffer_texture(struct st_framebuffer *stfb,
 343                                uint surfIndex, struct pipe_texture **tex)
 344 {
 345    struct st_renderbuffer *rb = stfb->strb;
 346    *tex = rb->texture;
 347    return VG_TRUE;
 348 }
 349
 350 void * st_framebuffer_private(struct st_framebuffer *stfb)
 351 {
 352    return stfb->privateData;
 353 }
 354
 355 void st_unreference_framebuffer(struct st_framebuffer *stfb)
 356 {
 357    /* FIXME */
 358 }
 359
 360 void st_make_current(struct vg_context *st,
 361                      struct st_framebuffer *draw,
 362                      struct st_framebuffer *read)
 363 {
 364    vg_set_current_context(st);
 365    if (st) {
 366       st->draw_buffer = draw;
 367    }
 368 }
 369
 370 struct vg_context *st_get_current(void)
 371 {
 372    return vg_current_context();
 373 }
 374
 375 void st_flush(struct vg_context *st, uint pipeFlushFlags,
 376               struct pipe_fence_handle **fence)
 377 {
 378    st->pipe->flush(st->pipe, pipeFlushFlags, fence);
 379 }
 380
 381 void st_finish(struct vg_context *st)
 382 {
 383    struct pipe_fence_handle *fence = NULL;
 384
 385    st_flush(st, PIPE_FLUSH_RENDER_CACHE, &fence);
 386
 387    st->pipe->screen->fence_finish(st->pipe->screen, fence, 0);
 388    st->pipe->screen->fence_reference(st->pipe->screen, &fence, NULL);
 389 }
 390
 391 void st_notify_swapbuffers(struct st_framebuffer *stfb)
 392 {
 393    struct vg_context *ctx = vg_current_context();
 394    if (ctx && ctx->draw_buffer == stfb) {
 395       st_flush(ctx,
 396                PIPE_FLUSH_RENDER_CACHE |
 397                PIPE_FLUSH_SWAPBUFFERS |
 398                PIPE_FLUSH_FRAME,
 399                NULL);
 400    }
 401 }
 402
 403 void st_notify_swapbuffers_complete(struct st_framebuffer *stfb)
 404 {
 405 }
 406
 407 int st_bind_texture_surface(struct pipe_surface *ps, int target, int level,
 408                             enum pipe_format format)
 409 {
 410    return 0;
 411 }
 412
 413 int st_unbind_texture_surface(struct pipe_surface *ps, int target, int level)
 414 {
 415    return 0;
 416 }