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