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       format = svga_translate_format(ss, viewFormat,
 153                                      PIPE_BIND_SAMPLER_VIEW);
 154       assert(format != SVGA3D_FORMAT_INVALID);
 155
 156       /* Convert the format to a sampler-friendly format, if needed */
 157       format = svga_sampler_format(format);
 158
 159       if (texture->target == PIPE_BUFFER) {
 160          unsigned elem_size = util_format_get_blocksize(sv->base.format);
 161
 162          viewDesc.buffer.firstElement = sv->base.u.buf.offset / elem_size;
 163          viewDesc.buffer.numElements = sv->base.u.buf.size / elem_size;
 164       }
 165       else {
 166          viewDesc.tex.mostDetailedMip = sv->base.u.tex.first_level;
 167          viewDesc.tex.firstArraySlice = sv->base.u.tex.first_layer;
 168          viewDesc.tex.mipLevels = (sv->base.u.tex.last_level -
 169                                    sv->base.u.tex.first_level + 1);
 170       }
 171
 172       /* arraySize in viewDesc specifies the number of array slices in a
 173        * texture array. For 3D texture, last_layer in
 174        * pipe_sampler_view specifies the last slice of the texture
 175        * which is different from the last slice in a texture array,
 176        * hence we need to set arraySize to 1 explicitly.
 177        */
 178       viewDesc.tex.arraySize =
 179          (texture->target == PIPE_TEXTURE_3D ||
 180           texture->target == PIPE_BUFFER) ? 1 :
 181             (sv->base.u.tex.last_layer - sv->base.u.tex.first_layer + 1);
 182
 183       switch (texture->target) {
 184       case PIPE_BUFFER:
 185          resourceDim = SVGA3D_RESOURCE_BUFFER;
 186          break;
 187       case PIPE_TEXTURE_1D:
 188       case PIPE_TEXTURE_1D_ARRAY:
 189          resourceDim = SVGA3D_RESOURCE_TEXTURE1D;
 190          break;
 191       case PIPE_TEXTURE_RECT:
 192       case PIPE_TEXTURE_2D:
 193       case PIPE_TEXTURE_2D_ARRAY:
 194          resourceDim = SVGA3D_RESOURCE_TEXTURE2D;
 195          break;
 196       case PIPE_TEXTURE_3D:
 197          resourceDim = SVGA3D_RESOURCE_TEXTURE3D;
 198          break;
 199       case PIPE_TEXTURE_CUBE:
 200       case PIPE_TEXTURE_CUBE_ARRAY:
 201          resourceDim = SVGA3D_RESOURCE_TEXTURECUBE;
 202          break;
 203
 204       default:
 205          assert(!"Unexpected texture type");
 206          resourceDim = SVGA3D_RESOURCE_TEXTURE2D;
 207       }
 208
 209       sv->id = util_bitmask_add(svga->sampler_view_id_bm);
 210
 211       ret = SVGA3D_vgpu10_DefineShaderResourceView(svga->swc,
 212                                                    sv->id,
 213                                                    surface,
 214                                                    format,
 215                                                    resourceDim,
 216                                                    &viewDesc);
 217       if (ret != PIPE_OK) {
 218          util_bitmask_clear(svga->sampler_view_id_bm, sv->id);
 219          sv->id = SVGA3D_INVALID_ID;
 220       }
 221    }
 222
 223    return ret;
 224 }
 225
 226
 227 static enum pipe_error
 228 update_sampler_resources(struct svga_context *svga, unsigned dirty)
 229 {
 230    enum pipe_error ret = PIPE_OK;
 231    enum pipe_shader_type shader;
 232
 233    if (!svga_have_vgpu10(svga))
 234       return PIPE_OK;
 235
 236    for (shader = PIPE_SHADER_VERTEX; shader <= PIPE_SHADER_GEOMETRY; shader++) {
 237       SVGA3dShaderResourceViewId ids[PIPE_MAX_SAMPLERS];
 238       struct svga_winsys_surface *surfaces[PIPE_MAX_SAMPLERS];
 239       struct pipe_sampler_view *sampler_views[PIPE_MAX_SAMPLERS];
 240       unsigned count;
 241       unsigned nviews;
 242       unsigned i;
 243
 244       count = svga->curr.num_sampler_views[shader];
 245       for (i = 0; i < count; i++) {
 246          struct svga_pipe_sampler_view *sv =
 247             svga_pipe_sampler_view(svga->curr.sampler_views[shader][i]);
 248
 249          if (sv) {
 250             surfaces[i] = svga_resource_handle(sv->base.texture);
 251
 252             ret = svga_validate_pipe_sampler_view(svga, sv);
 253             if (ret != PIPE_OK)
 254                return ret;
 255
 256             assert(sv->id != SVGA3D_INVALID_ID);
 257             ids[i] = sv->id;
 258             sampler_views[i] = &sv->base;
 259          }
 260          else {
 261             surfaces[i] = NULL;
 262             ids[i] = SVGA3D_INVALID_ID;
 263             sampler_views[i] = NULL;
 264          }
 265       }
 266
 267       for (; i < svga->state.hw_draw.num_sampler_views[shader]; i++) {
 268          ids[i] = SVGA3D_INVALID_ID;
 269          surfaces[i] = NULL;
 270          sampler_views[i] = NULL;
 271       }
 272
 273       /* Number of ShaderResources that need to be modified. This includes
 274        * the one that need to be unbound.
 275        */
 276       nviews = MAX2(svga->state.hw_draw.num_sampler_views[shader], count);
 277       if (nviews > 0) {
 278          if (count != svga->state.hw_draw.num_sampler_views[shader] ||
 279              memcmp(sampler_views, svga->state.hw_draw.sampler_views[shader],
 280                     count * sizeof(sampler_views[0])) != 0) {
 281             SVGA3dShaderResourceViewId *pIds = ids;
 282             struct svga_winsys_surface **pSurf = surfaces;
 283             unsigned numSR = 0;
 284
 285             /* Loop through the sampler view list to only emit
 286              * the sampler views that are not already in the
 287              * corresponding entries in the device's
 288              * shader resource list.
 289              */
 290             for (i = 0; i < nviews; i++) {
 291                 boolean emit;
 292
 293                 emit = sampler_views[i] ==
 294                        svga->state.hw_draw.sampler_views[shader][i];
 295
 296                 if (!emit && i == nviews-1) {
 297                    /* Include the last sampler view in the next emit
 298                     * if it is different.
 299                     */
 300                    emit = TRUE;
 301                    numSR++;
 302                    i++;
 303                 }
 304
 305                 if (emit) {
 306                    /* numSR can only be 0 if the first entry of the list
 307                     * is the same as the one in the device list.
 308                     * In this case, * there is nothing to send yet.
 309                     */
 310                    if (numSR) {
 311                       ret = SVGA3D_vgpu10_SetShaderResources(
 312                                svga->swc,
 313                                svga_shader_type(shader),
 314                                i - numSR, /* startView */
 315                                numSR,
 316                                pIds,
 317                                pSurf);
 318
 319                       if (ret != PIPE_OK)
 320                          return ret;
 321                    }
 322                    pIds += (numSR + 1);
 323                    pSurf += (numSR + 1);
 324                    numSR = 0;
 325                 }
 326                 else
 327                    numSR++;
 328             }
 329
 330             /* Save referenced sampler views in the hw draw state.  */
 331             svga->state.hw_draw.num_sampler_views[shader] = count;
 332             for (i = 0; i < nviews; i++) {
 333                pipe_sampler_view_reference(
 334                   &svga->state.hw_draw.sampler_views[shader][i],
 335                   sampler_views[i]);
 336             }
 337          }
 338       }
 339    }
 340
 341    /* Handle polygon stipple sampler view */
 342    if (svga->curr.rast->templ.poly_stipple_enable) {
 343       const unsigned unit = svga->state.hw_draw.fs->pstipple_sampler_unit;
 344       struct svga_pipe_sampler_view *sv = svga->polygon_stipple.sampler_view;
 345       struct svga_winsys_surface *surface;
 346
 347       assert(sv);
 348       if (!sv) {
 349          return PIPE_OK;  /* probably out of memory */
 350       }
 351
 352       ret = svga_validate_pipe_sampler_view(svga, sv);
 353       if (ret != PIPE_OK)
 354          return ret;
 355
 356       surface = svga_resource_handle(sv->base.texture);
 357       ret = SVGA3D_vgpu10_SetShaderResources(
 358                svga->swc,
 359                svga_shader_type(PIPE_SHADER_FRAGMENT),
 360                unit, /* startView */
 361                1,
 362                &sv->id,
 363                &surface);
 364    }
 365    return ret;
 366 }
 367
 368
 369 struct svga_tracked_state svga_hw_sampler_bindings = {
 370    "shader resources emit",
 371    SVGA_NEW_STIPPLE |
 372    SVGA_NEW_TEXTURE_BINDING,
 373    update_sampler_resources
 374 };
 375
 376
 377
 378 static enum pipe_error
 379 update_samplers(struct svga_context *svga, unsigned dirty )
 380 {
 381    enum pipe_error ret = PIPE_OK;
 382    enum pipe_shader_type shader;
 383
 384    if (!svga_have_vgpu10(svga))
 385       return PIPE_OK;
 386
 387    for (shader = PIPE_SHADER_VERTEX; shader <= PIPE_SHADER_GEOMETRY; shader++) {
 388       const unsigned count = svga->curr.num_samplers[shader];
 389       SVGA3dSamplerId ids[PIPE_MAX_SAMPLERS];
 390       unsigned i;
 391       unsigned nsamplers;
 392
 393       for (i = 0; i < count; i++) {
 394          bool fs_shadow = false;
 395
 396          /* _NEW_FS */
 397          if (shader == PIPE_SHADER_FRAGMENT) {
 398             struct svga_shader_variant *fs = svga->state.hw_draw.fs;
 399             /* If the fragment shader is doing the shadow comparison
 400              * for this texture unit, don't enable shadow compare in
 401              * the texture sampler state.
 402              */
 403             if (fs && (fs->fs_shadow_compare_units & (1 << i))) {
 404                fs_shadow = true;
 405             }
 406          }
 407
 408          if (svga->curr.sampler[shader][i]) {
 409             ids[i] = svga->curr.sampler[shader][i]->id[fs_shadow];
 410             assert(ids[i] != SVGA3D_INVALID_ID);
 411          }
 412          else {
 413             ids[i] = SVGA3D_INVALID_ID;
 414          }
 415       }
 416
 417       for (; i < svga->state.hw_draw.num_samplers[shader]; i++) {
 418          ids[i] = SVGA3D_INVALID_ID;
 419       }
 420
 421       nsamplers = MAX2(svga->state.hw_draw.num_samplers[shader], count);
 422       if (nsamplers > 0) {
 423          if (count != svga->state.hw_draw.num_samplers[shader] ||
 424              memcmp(ids, svga->state.hw_draw.samplers[shader],
 425                     count * sizeof(ids[0])) != 0) {
 426             /* HW state is really changing */
 427             ret = SVGA3D_vgpu10_SetSamplers(svga->swc,
 428                                             nsamplers,
 429                                             0,                       /* start */
 430                                             svga_shader_type(shader), /* type */
 431                                             ids);
 432             if (ret != PIPE_OK)
 433                return ret;
 434             memcpy(svga->state.hw_draw.samplers[shader], ids,
 435                    nsamplers * sizeof(ids[0]));
 436             svga->state.hw_draw.num_samplers[shader] = count;
 437          }
 438       }
 439    }
 440
 441    /* Handle polygon stipple sampler texture */
 442    if (svga->curr.rast->templ.poly_stipple_enable) {
 443       const unsigned unit = svga->state.hw_draw.fs->pstipple_sampler_unit;
 444       struct svga_sampler_state *sampler = svga->polygon_stipple.sampler;
 445
 446       assert(sampler);
 447       if (!sampler) {
 448          return PIPE_OK; /* probably out of memory */
 449       }
 450
 451       if (svga->state.hw_draw.samplers[PIPE_SHADER_FRAGMENT][unit]
 452           != sampler->id[0]) {
 453          ret = SVGA3D_vgpu10_SetSamplers(svga->swc,
 454                                          1, /* count */
 455                                          unit, /* start */
 456                                          SVGA3D_SHADERTYPE_PS,
 457                                          &sampler->id[0]);
 458          if (ret != PIPE_OK)
 459             return ret;
 460
 461          /* save the polygon stipple sampler in the hw draw state */
 462          svga->state.hw_draw.samplers[PIPE_SHADER_FRAGMENT][unit] =
 463             sampler->id[0];
 464       }
 465    }
 466
 467    return ret;
 468 }
 469
 470
 471 struct svga_tracked_state svga_hw_sampler = {
 472    "texture sampler emit",
 473    (SVGA_NEW_FS |
 474     SVGA_NEW_SAMPLER |
 475     SVGA_NEW_STIPPLE),
 476    update_samplers
 477 };