src/gallium/drivers/svga/svga_state_sampler.c

   1 /*
   2  * Copyright 2013 VMware, Inc.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  */
  24
  25
  26 /**
  27  * VGPU10 sampler and sampler view functions.
  28  */
  29
  30
  31 #include "pipe/p_defines.h"
  32 #include "util/u_bitmask.h"
  33 #include "util/u_format.h"
  34 #include "util/u_inlines.h"
  35 #include "util/u_math.h"
  36 #include "util/u_memory.h"
  37
  38 #include "svga_cmd.h"
  39 #include "svga_context.h"
  40 #include "svga_format.h"
  41 #include "svga_resource_buffer.h"
  42 #include "svga_resource_texture.h"
  43 #include "svga_sampler_view.h"
  44 #include "svga_shader.h"
  45 #include "svga_state.h"
  46 #include "svga_surface.h"
  47 #include "svga3d_surfacedefs.h"
  48
  49 /** Get resource handle for a texture or buffer */
  50 static inline struct svga_winsys_surface *
  51 svga_resource_handle(struct pipe_resource *res)
  52 {
  53    if (res->target == PIPE_BUFFER) {
  54       return svga_buffer(res)->handle;
  55    }
  56    else {
  57       return svga_texture(res)->handle;
  58    }
  59 }
  60
  61
  62 /**
  63  * This helper function returns TRUE if the specified resource collides with
  64  * any of the resources bound to any of the currently bound sampler views.
  65  */
  66 boolean
  67 svga_check_sampler_view_resource_collision(const struct svga_context *svga,
  68                                            const struct svga_winsys_surface *res,
  69                                            enum pipe_shader_type shader)
  70 {
  71    struct pipe_screen *screen = svga->pipe.screen;
  72    unsigned i;
  73
  74    if (svga_screen(screen)->debug.no_surface_view) {
  75       return FALSE;
  76    }
  77
  78    for (i = 0; i < svga->curr.num_sampler_views[shader]; i++) {
  79       struct svga_pipe_sampler_view *sv =
  80          svga_pipe_sampler_view(svga->curr.sampler_views[shader][i]);
  81
  82       if (sv && res == svga_resource_handle(sv->base.texture)) {
  83          return TRUE;
  84       }
  85    }
  86
  87    return FALSE;
  88 }
  89
  90
  91 /**
  92  * Check if there are any resources that are both bound to a render target
  93  * and bound as a shader resource for the given type of shader.
  94  */
  95 boolean
  96 svga_check_sampler_framebuffer_resource_collision(struct svga_context *svga,
  97                                                   enum pipe_shader_type shader)
  98 {
  99    struct svga_surface *surf;
 100    unsigned i;
 101
 102    for (i = 0; i < svga->curr.framebuffer.nr_cbufs; i++) {
 103       surf = svga_surface(svga->curr.framebuffer.cbufs[i]);
 104       if (surf &&
 105           svga_check_sampler_view_resource_collision(svga, surf->handle,
 106                                                      shader)) {
 107          return TRUE;
 108       }
 109    }
 110
 111    surf = svga_surface(svga->curr.framebuffer.zsbuf);
 112    if (surf &&
 113        svga_check_sampler_view_resource_collision(svga, surf->handle, shader)) {
 114       return TRUE;
 115    }
 116
 117    return FALSE;
 118 }
 119
 120
 121 /**
 122  * Create a DX ShaderResourceSamplerView for the given pipe_sampler_view,
 123  * if needed.
 124  */
 125 enum pipe_error
 126 svga_validate_pipe_sampler_view(struct svga_context *svga,
 127                                 struct svga_pipe_sampler_view *sv)
 128 {
 129    enum pipe_error ret = PIPE_OK;
 130
 131    if (sv->id == SVGA3D_INVALID_ID) {
 132       struct svga_screen *ss = svga_screen(svga->pipe.screen);
 133       struct pipe_resource *texture = sv->base.texture;
 134       struct svga_winsys_surface *surface = svga_resource_handle(texture);
 135       SVGA3dSurfaceFormat format;
 136       SVGA3dResourceType resourceDim;
 137       SVGA3dShaderResourceViewDesc viewDesc;
 138       enum pipe_format viewFormat = sv->base.format;
 139
 140       /* vgpu10 cannot create a BGRX view for a BGRA resource, so force it to
 141        * create a BGRA view (and vice versa).
 142        */
 143       if (viewFormat == PIPE_FORMAT_B8G8R8X8_UNORM &&
 144           svga_texture_device_format_has_alpha(texture)) {
 145          viewFormat = PIPE_FORMAT_B8G8R8A8_UNORM;
 146       }
 147       else if (viewFormat == PIPE_FORMAT_B8G8R8A8_UNORM &&
 148                !svga_texture_device_format_has_alpha(texture)) {
 149          viewFormat = PIPE_FORMAT_B8G8R8X8_UNORM;
 150       }
 151
 152       if (texture->target == PIPE_BUFFER) {
 153          unsigned pf_flags;
 154          svga_translate_texture_buffer_view_format(viewFormat,
 155                                                    &format,
 156                                                    &pf_flags);
 157       }
 158       else {
 159          format = svga_translate_format(ss, viewFormat,
 160                                         PIPE_BIND_SAMPLER_VIEW);
 161
 162          /* Convert the format to a sampler-friendly format, if needed */
 163          format = svga_sampler_format(format);
 164       }
 165
 166       assert(format != SVGA3D_FORMAT_INVALID);
 167
 168       if (texture->target == PIPE_BUFFER) {
 169          unsigned elem_size = util_format_get_blocksize(sv->base.format);
 170
 171          viewDesc.buffer.firstElement = sv->base.u.buf.offset / elem_size;
 172          viewDesc.buffer.numElements = sv->base.u.buf.size / elem_size;
 173       }
 174       else {
 175          viewDesc.tex.mostDetailedMip = sv->base.u.tex.first_level;
 176          viewDesc.tex.firstArraySlice = sv->base.u.tex.first_layer;
 177          viewDesc.tex.mipLevels = (sv->base.u.tex.last_level -
 178                                    sv->base.u.tex.first_level + 1);
 179       }
 180
 181       /* arraySize in viewDesc specifies the number of array slices in a
 182        * texture array. For 3D texture, last_layer in
 183        * pipe_sampler_view specifies the last slice of the texture
 184        * which is different from the last slice in a texture array,
 185        * hence we need to set arraySize to 1 explicitly.
 186        */
 187       viewDesc.tex.arraySize =
 188          (texture->target == PIPE_TEXTURE_3D ||
 189           texture->target == PIPE_BUFFER) ? 1 :
 190             (sv->base.u.tex.last_layer - sv->base.u.tex.first_layer + 1);
 191
 192       switch (texture->target) {
 193       case PIPE_BUFFER:
 194          resourceDim = SVGA3D_RESOURCE_BUFFER;
 195          break;
 196       case PIPE_TEXTURE_1D:
 197       case PIPE_TEXTURE_1D_ARRAY:
 198          resourceDim = SVGA3D_RESOURCE_TEXTURE1D;
 199          break;
 200       case PIPE_TEXTURE_RECT:
 201       case PIPE_TEXTURE_2D:
 202       case PIPE_TEXTURE_2D_ARRAY:
 203          resourceDim = SVGA3D_RESOURCE_TEXTURE2D;
 204          break;
 205       case PIPE_TEXTURE_3D:
 206          resourceDim = SVGA3D_RESOURCE_TEXTURE3D;
 207          break;
 208       case PIPE_TEXTURE_CUBE:
 209       case PIPE_TEXTURE_CUBE_ARRAY:
 210          resourceDim = SVGA3D_RESOURCE_TEXTURECUBE;
 211          break;
 212
 213       default:
 214          assert(!"Unexpected texture type");
 215          resourceDim = SVGA3D_RESOURCE_TEXTURE2D;
 216       }
 217
 218       sv->id = util_bitmask_add(svga->sampler_view_id_bm);
 219
 220       ret = SVGA3D_vgpu10_DefineShaderResourceView(svga->swc,
 221                                                    sv->id,
 222                                                    surface,
 223                                                    format,
 224                                                    resourceDim,
 225                                                    &viewDesc);
 226       if (ret != PIPE_OK) {
 227          util_bitmask_clear(svga->sampler_view_id_bm, sv->id);
 228          sv->id = SVGA3D_INVALID_ID;
 229       }
 230    }
 231
 232    return ret;
 233 }
 234
 235
 236 static enum pipe_error
 237 update_sampler_resources(struct svga_context *svga, unsigned dirty)
 238 {
 239    enum pipe_error ret = PIPE_OK;
 240    enum pipe_shader_type shader;
 241
 242    if (!svga_have_vgpu10(svga))
 243       return PIPE_OK;
 244
 245    for (shader = PIPE_SHADER_VERTEX; shader <= PIPE_SHADER_GEOMETRY; shader++) {
 246       SVGA3dShaderResourceViewId ids[PIPE_MAX_SAMPLERS];
 247       struct svga_winsys_surface *surfaces[PIPE_MAX_SAMPLERS];
 248       struct pipe_sampler_view *sampler_views[PIPE_MAX_SAMPLERS];
 249       unsigned count;
 250       unsigned nviews;
 251       unsigned i;
 252
 253       count = svga->curr.num_sampler_views[shader];
 254       for (i = 0; i < count; i++) {
 255          struct svga_pipe_sampler_view *sv =
 256             svga_pipe_sampler_view(svga->curr.sampler_views[shader][i]);
 257
 258          if (sv) {
 259             surfaces[i] = svga_resource_handle(sv->base.texture);
 260
 261             ret = svga_validate_pipe_sampler_view(svga, sv);
 262             if (ret != PIPE_OK)
 263                return ret;
 264
 265             assert(sv->id != SVGA3D_INVALID_ID);
 266             ids[i] = sv->id;
 267             sampler_views[i] = &sv->base;
 268          }
 269          else {
 270             surfaces[i] = NULL;
 271             ids[i] = SVGA3D_INVALID_ID;
 272             sampler_views[i] = NULL;
 273          }
 274       }
 275
 276       for (; i < svga->state.hw_draw.num_sampler_views[shader]; i++) {
 277          ids[i] = SVGA3D_INVALID_ID;
 278          surfaces[i] = NULL;
 279          sampler_views[i] = NULL;
 280       }
 281
 282       /* Number of ShaderResources that need to be modified. This includes
 283        * the one that need to be unbound.
 284        */
 285       nviews = MAX2(svga->state.hw_draw.num_sampler_views[shader], count);
 286       if (nviews > 0) {
 287          if (count != svga->state.hw_draw.num_sampler_views[shader] ||
 288              memcmp(sampler_views, svga->state.hw_draw.sampler_views[shader],
 289                     count * sizeof(sampler_views[0])) != 0) {
 290             SVGA3dShaderResourceViewId *pIds = ids;
 291             struct svga_winsys_surface **pSurf = surfaces;
 292             unsigned numSR = 0;
 293
 294             /* Loop through the sampler view list to only emit
 295              * the sampler views that are not already in the
 296              * corresponding entries in the device's
 297              * shader resource list.
 298              */
 299             for (i = 0; i < nviews; i++) {
 300                 boolean emit;
 301
 302                 emit = sampler_views[i] ==
 303                        svga->state.hw_draw.sampler_views[shader][i];
 304
 305                 if (!emit && i == nviews-1) {
 306                    /* Include the last sampler view in the next emit
 307                     * if it is different.
 308                     */
 309                    emit = TRUE;
 310                    numSR++;
 311                    i++;
 312                 }
 313
 314                 if (emit) {
 315                    /* numSR can only be 0 if the first entry of the list
 316                     * is the same as the one in the device list.
 317                     * In this case, * there is nothing to send yet.
 318                     */
 319                    if (numSR) {
 320                       ret = SVGA3D_vgpu10_SetShaderResources(
 321                                svga->swc,
 322                                svga_shader_type(shader),
 323                                i - numSR, /* startView */
 324                                numSR,
 325                                pIds,
 326                                pSurf);
 327
 328                       if (ret != PIPE_OK)
 329                          return ret;
 330                    }
 331                    pIds += (numSR + 1);
 332                    pSurf += (numSR + 1);
 333                    numSR = 0;
 334                 }
 335                 else
 336                    numSR++;
 337             }
 338
 339             /* Save referenced sampler views in the hw draw state.  */
 340             svga->state.hw_draw.num_sampler_views[shader] = count;
 341             for (i = 0; i < nviews; i++) {
 342                pipe_sampler_view_reference(
 343                   &svga->state.hw_draw.sampler_views[shader][i],
 344                   sampler_views[i]);
 345             }
 346          }
 347       }
 348    }
 349
 350    /* Handle polygon stipple sampler view */
 351    if (svga->curr.rast->templ.poly_stipple_enable) {
 352       const unsigned unit = svga->state.hw_draw.fs->pstipple_sampler_unit;
 353       struct svga_pipe_sampler_view *sv = svga->polygon_stipple.sampler_view;
 354       struct svga_winsys_surface *surface;
 355
 356       assert(sv);
 357       if (!sv) {
 358          return PIPE_OK;  /* probably out of memory */
 359       }
 360
 361       ret = svga_validate_pipe_sampler_view(svga, sv);
 362       if (ret != PIPE_OK)
 363          return ret;
 364
 365       surface = svga_resource_handle(sv->base.texture);
 366       ret = SVGA3D_vgpu10_SetShaderResources(
 367                svga->swc,
 368                svga_shader_type(PIPE_SHADER_FRAGMENT),
 369                unit, /* startView */
 370                1,
 371                &sv->id,
 372                &surface);
 373    }
 374    return ret;
 375 }
 376
 377
 378 struct svga_tracked_state svga_hw_sampler_bindings = {
 379    "shader resources emit",
 380    SVGA_NEW_STIPPLE |
 381    SVGA_NEW_TEXTURE_BINDING,
 382    update_sampler_resources
 383 };
 384
 385
 386
 387 static enum pipe_error
 388 update_samplers(struct svga_context *svga, unsigned dirty )
 389 {
 390    enum pipe_error ret = PIPE_OK;
 391    enum pipe_shader_type shader;
 392
 393    if (!svga_have_vgpu10(svga))
 394       return PIPE_OK;
 395
 396    for (shader = PIPE_SHADER_VERTEX; shader <= PIPE_SHADER_GEOMETRY; shader++) {
 397       const unsigned count = svga->curr.num_samplers[shader];
 398       SVGA3dSamplerId ids[PIPE_MAX_SAMPLERS];
 399       unsigned i;
 400       unsigned nsamplers;
 401
 402       for (i = 0; i < count; i++) {
 403          bool fs_shadow = false;
 404
 405          /* _NEW_FS */
 406          if (shader == PIPE_SHADER_FRAGMENT) {
 407             struct svga_shader_variant *fs = svga->state.hw_draw.fs;
 408             /* If the fragment shader is doing the shadow comparison
 409              * for this texture unit, don't enable shadow compare in
 410              * the texture sampler state.
 411              */
 412             if (fs && (fs->fs_shadow_compare_units & (1 << i))) {
 413                fs_shadow = true;
 414             }
 415          }
 416
 417          if (svga->curr.sampler[shader][i]) {
 418             ids[i] = svga->curr.sampler[shader][i]->id[fs_shadow];
 419             assert(ids[i] != SVGA3D_INVALID_ID);
 420          }
 421          else {
 422             ids[i] = SVGA3D_INVALID_ID;
 423          }
 424       }
 425
 426       for (; i < svga->state.hw_draw.num_samplers[shader]; i++) {
 427          ids[i] = SVGA3D_INVALID_ID;
 428       }
 429
 430       nsamplers = MAX2(svga->state.hw_draw.num_samplers[shader], count);
 431       if (nsamplers > 0) {
 432          if (count != svga->state.hw_draw.num_samplers[shader] ||
 433              memcmp(ids, svga->state.hw_draw.samplers[shader],
 434                     count * sizeof(ids[0])) != 0) {
 435             /* HW state is really changing */
 436             ret = SVGA3D_vgpu10_SetSamplers(svga->swc,
 437                                             nsamplers,
 438                                             0,                       /* start */
 439                                             svga_shader_type(shader), /* type */
 440                                             ids);
 441             if (ret != PIPE_OK)
 442                return ret;
 443             memcpy(svga->state.hw_draw.samplers[shader], ids,
 444                    nsamplers * sizeof(ids[0]));
 445             svga->state.hw_draw.num_samplers[shader] = count;
 446          }
 447       }
 448    }
 449
 450    /* Handle polygon stipple sampler texture */
 451    if (svga->curr.rast->templ.poly_stipple_enable) {
 452       const unsigned unit = svga->state.hw_draw.fs->pstipple_sampler_unit;
 453       struct svga_sampler_state *sampler = svga->polygon_stipple.sampler;
 454
 455       assert(sampler);
 456       if (!sampler) {
 457          return PIPE_OK; /* probably out of memory */
 458       }
 459
 460       if (svga->state.hw_draw.samplers[PIPE_SHADER_FRAGMENT][unit]
 461           != sampler->id[0]) {
 462          ret = SVGA3D_vgpu10_SetSamplers(svga->swc,
 463                                          1, /* count */
 464                                          unit, /* start */
 465                                          SVGA3D_SHADERTYPE_PS,
 466                                          &sampler->id[0]);
 467          if (ret != PIPE_OK)
 468             return ret;
 469
 470          /* save the polygon stipple sampler in the hw draw state */
 471          svga->state.hw_draw.samplers[PIPE_SHADER_FRAGMENT][unit] =
 472             sampler->id[0];
 473       }
 474    }
 475
 476    return ret;
 477 }
 478
 479
 480 struct svga_tracked_state svga_hw_sampler = {
 481    "texture sampler emit",
 482    (SVGA_NEW_FS |
 483     SVGA_NEW_SAMPLER |
 484     SVGA_NEW_STIPPLE),
 485    update_samplers
 486 };