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_inlines.h"
  34 #include "util/u_math.h"
  35 #include "util/u_memory.h"
  36
  37 #include "svga_cmd.h"
  38 #include "svga_context.h"
  39 #include "svga_format.h"
  40 #include "svga_resource_buffer.h"
  41 #include "svga_resource_texture.h"
  42 #include "svga_shader.h"
  43 #include "svga_state.h"
  44 #include "svga_sampler_view.h"
  45
  46
  47 /** Get resource handle for a texture or buffer */
  48 static inline struct svga_winsys_surface *
  49 svga_resource_handle(struct pipe_resource *res)
  50 {
  51    if (res->target == PIPE_BUFFER) {
  52       return svga_buffer(res)->handle;
  53    }
  54    else {
  55       return svga_texture(res)->handle;
  56    }
  57 }
  58
  59
  60 /**
  61  * This helper function returns TRUE if the specified resource collides with
  62  * any of the resources bound to any of the currently bound sampler views.
  63  */
  64 boolean
  65 svga_check_sampler_view_resource_collision(struct svga_context *svga,
  66                                            struct svga_winsys_surface *res,
  67                                            unsigned shader)
  68 {
  69    struct pipe_screen *screen = svga->pipe.screen;
  70    unsigned i;
  71
  72    if (svga_screen(screen)->debug.no_surface_view) {
  73       return FALSE;
  74    }
  75
  76    for (i = 0; i < svga->curr.num_sampler_views[shader]; i++) {
  77       struct svga_pipe_sampler_view *sv =
  78          svga_pipe_sampler_view(svga->curr.sampler_views[shader][i]);
  79
  80       if (sv && res == svga_resource_handle(sv->base.texture)) {
  81          return TRUE;
  82       }
  83    }
  84
  85    return FALSE;
  86 }
  87
  88
  89 /**
  90  * Create a DX ShaderResourceSamplerView for the given pipe_sampler_view,
  91  * if needed.
  92  */
  93 enum pipe_error
  94 svga_validate_pipe_sampler_view(struct svga_context *svga,
  95                                 struct svga_pipe_sampler_view *sv)
  96 {
  97    enum pipe_error ret = PIPE_OK;
  98
  99    if (sv->id == SVGA3D_INVALID_ID) {
 100       struct svga_screen *ss = svga_screen(svga->pipe.screen);
 101       struct pipe_resource *texture = sv->base.texture;
 102       struct svga_winsys_surface *surface = svga_resource_handle(texture);
 103       SVGA3dSurfaceFormat format;
 104       SVGA3dResourceType resourceDim;
 105       SVGA3dShaderResourceViewDesc viewDesc;
 106       enum pipe_format pformat = sv->base.format;
 107
 108       /* vgpu10 cannot create a BGRX view for a BGRA resource, so force it to
 109        * create a BGRA view.
 110        */
 111       if (pformat == PIPE_FORMAT_B8G8R8X8_UNORM &&
 112           sv->base.texture->format == PIPE_FORMAT_B8G8R8A8_UNORM) {
 113          pformat = PIPE_FORMAT_B8G8R8A8_UNORM;
 114       }
 115
 116       format = svga_translate_format(ss, pformat,
 117                                      PIPE_BIND_SAMPLER_VIEW);
 118       assert(format != SVGA3D_FORMAT_INVALID);
 119
 120       /* Convert the format to a sampler-friendly format, if needed */
 121       format = svga_sampler_format(format);
 122
 123       if (texture->target == PIPE_BUFFER) {
 124          viewDesc.buffer.firstElement = sv->base.u.buf.first_element;
 125          viewDesc.buffer.numElements = (sv->base.u.buf.last_element -
 126                                         sv->base.u.buf.first_element + 1);
 127       }
 128       else {
 129          viewDesc.tex.mostDetailedMip = sv->base.u.tex.first_level;
 130          viewDesc.tex.firstArraySlice = sv->base.u.tex.first_layer;
 131          viewDesc.tex.mipLevels = (sv->base.u.tex.last_level -
 132                                    sv->base.u.tex.first_level + 1);
 133       }
 134
 135       /* arraySize in viewDesc specifies the number of array slices in a
 136        * texture array. For 3D texture, last_layer in
 137        * pipe_sampler_view specifies the last slice of the texture
 138        * which is different from the last slice in a texture array,
 139        * hence we need to set arraySize to 1 explicitly.
 140        */
 141       viewDesc.tex.arraySize =
 142          (texture->target == PIPE_TEXTURE_3D ||
 143           texture->target == PIPE_BUFFER) ? 1 :
 144             (sv->base.u.tex.last_layer - sv->base.u.tex.first_layer + 1);
 145
 146       switch (texture->target) {
 147       case PIPE_BUFFER:
 148          resourceDim = SVGA3D_RESOURCE_BUFFER;
 149          break;
 150       case PIPE_TEXTURE_1D:
 151       case PIPE_TEXTURE_1D_ARRAY:
 152          resourceDim = SVGA3D_RESOURCE_TEXTURE1D;
 153          break;
 154       case PIPE_TEXTURE_RECT:
 155       case PIPE_TEXTURE_2D:
 156       case PIPE_TEXTURE_2D_ARRAY:
 157          resourceDim = SVGA3D_RESOURCE_TEXTURE2D;
 158          break;
 159       case PIPE_TEXTURE_3D:
 160          resourceDim = SVGA3D_RESOURCE_TEXTURE3D;
 161          break;
 162       case PIPE_TEXTURE_CUBE:
 163       case PIPE_TEXTURE_CUBE_ARRAY:
 164          resourceDim = SVGA3D_RESOURCE_TEXTURECUBE;
 165          break;
 166
 167       default:
 168          assert(!"Unexpected texture type");
 169          resourceDim = SVGA3D_RESOURCE_TEXTURE2D;
 170       }
 171
 172       sv->id = util_bitmask_add(svga->sampler_view_id_bm);
 173
 174       ret = SVGA3D_vgpu10_DefineShaderResourceView(svga->swc,
 175                                                    sv->id,
 176                                                    surface,
 177                                                    format,
 178                                                    resourceDim,
 179                                                    &viewDesc);
 180       if (ret != PIPE_OK) {
 181          util_bitmask_clear(svga->sampler_view_id_bm, sv->id);
 182          sv->id = SVGA3D_INVALID_ID;
 183       }
 184    }
 185
 186    return ret;
 187 }
 188
 189
 190 static enum pipe_error
 191 update_sampler_resources(struct svga_context *svga, unsigned dirty)
 192 {
 193    enum pipe_error ret = PIPE_OK;
 194    unsigned shader;
 195
 196    if (!svga_have_vgpu10(svga))
 197       return PIPE_OK;
 198
 199    for (shader = PIPE_SHADER_VERTEX; shader <= PIPE_SHADER_GEOMETRY; shader++) {
 200       SVGA3dShaderResourceViewId ids[PIPE_MAX_SAMPLERS];
 201       struct svga_winsys_surface *surfaces[PIPE_MAX_SAMPLERS];
 202       unsigned count;
 203       unsigned nviews;
 204       unsigned i;
 205
 206       count = svga->curr.num_sampler_views[shader];
 207       for (i = 0; i < count; i++) {
 208          struct svga_pipe_sampler_view *sv =
 209             svga_pipe_sampler_view(svga->curr.sampler_views[shader][i]);
 210          struct svga_winsys_surface *surface;
 211
 212          if (sv) {
 213             surface = svga_resource_handle(sv->base.texture);
 214
 215             ret = svga_validate_pipe_sampler_view(svga, sv);
 216             if (ret != PIPE_OK)
 217                return ret;
 218
 219             assert(sv->id != SVGA3D_INVALID_ID);
 220             ids[i] = sv->id;
 221          }
 222          else {
 223             surface = NULL;
 224             ids[i] = SVGA3D_INVALID_ID;
 225          }
 226          surfaces[i] = surface;
 227       }
 228
 229       for (; i < ARRAY_SIZE(ids); i++) {
 230          ids[i] = SVGA3D_INVALID_ID;
 231          surfaces[i] = NULL;
 232       }
 233
 234       if (shader == PIPE_SHADER_FRAGMENT) {
 235          /* Handle polygon stipple sampler view */
 236          if (svga->curr.rast->templ.poly_stipple_enable) {
 237             const unsigned unit = svga->state.hw_draw.fs->pstipple_sampler_unit;
 238             struct svga_pipe_sampler_view *sv =
 239                svga->polygon_stipple.sampler_view;
 240
 241             assert(sv);
 242             if (!sv) {
 243                return PIPE_OK;  /* probably out of memory */
 244             }
 245
 246             ret = svga_validate_pipe_sampler_view(svga, sv);
 247             if (ret != PIPE_OK)
 248                return ret;
 249
 250             ids[unit] = sv->id;
 251             surfaces[unit] = svga_resource_handle(sv->base.texture);
 252             count = MAX2(count, unit+1);
 253          }
 254       }
 255
 256       /* Number of ShaderResources that need to be modified. This includes
 257        * the one that need to be unbound.
 258        */
 259       nviews = MAX2(svga->state.hw_draw.num_sampler_views[shader], count);
 260       if (nviews > 0) {
 261          ret = SVGA3D_vgpu10_SetShaderResources(svga->swc,
 262                                                 svga_shader_type(shader),
 263                                                 0, /* startView */
 264                                                 nviews,
 265                                                 ids,
 266                                                 surfaces);
 267          if (ret != PIPE_OK)
 268             return ret;
 269       }
 270
 271       /* Number of sampler views enabled in the device */
 272       svga->state.hw_draw.num_sampler_views[shader] = count;
 273    }
 274
 275    return ret;
 276 }
 277
 278
 279 struct svga_tracked_state svga_hw_sampler_bindings = {
 280    "shader resources emit",
 281    SVGA_NEW_STIPPLE |
 282    SVGA_NEW_TEXTURE_BINDING,
 283    update_sampler_resources
 284 };
 285
 286
 287
 288 static enum pipe_error
 289 update_samplers(struct svga_context *svga, unsigned dirty )
 290 {
 291    enum pipe_error ret = PIPE_OK;
 292    unsigned shader;
 293
 294    if (!svga_have_vgpu10(svga))
 295       return PIPE_OK;
 296
 297    for (shader = PIPE_SHADER_VERTEX; shader <= PIPE_SHADER_GEOMETRY; shader++) {
 298       const unsigned count = svga->curr.num_samplers[shader];
 299       SVGA3dSamplerId ids[PIPE_MAX_SAMPLERS];
 300       unsigned i;
 301
 302       for (i = 0; i < count; i++) {
 303          if (svga->curr.sampler[shader][i]) {
 304             ids[i] = svga->curr.sampler[shader][i]->id;
 305             assert(ids[i] != SVGA3D_INVALID_ID);
 306          }
 307          else {
 308             ids[i] = SVGA3D_INVALID_ID;
 309          }
 310       }
 311
 312       if (count > 0) {
 313          if (count != svga->state.hw_draw.num_samplers[shader] ||
 314              memcmp(ids, svga->state.hw_draw.samplers[shader],
 315                     count * sizeof(ids[0])) != 0) {
 316             /* HW state is really changing */
 317             ret = SVGA3D_vgpu10_SetSamplers(svga->swc,
 318                                             count,
 319                                             0,                       /* start */
 320                                             svga_shader_type(shader), /* type */
 321                                             ids);
 322             if (ret != PIPE_OK)
 323                return ret;
 324             memcpy(svga->state.hw_draw.samplers[shader], ids,
 325                    count * sizeof(ids[0]));
 326             svga->state.hw_draw.num_samplers[shader] = count;
 327          }
 328       }
 329    }
 330
 331    /* Handle polygon stipple sampler texture */
 332    if (svga->curr.rast->templ.poly_stipple_enable) {
 333       const unsigned unit = svga->state.hw_draw.fs->pstipple_sampler_unit;
 334       struct svga_sampler_state *sampler = svga->polygon_stipple.sampler;
 335
 336       assert(sampler);
 337       if (!sampler) {
 338          return PIPE_OK; /* probably out of memory */
 339       }
 340
 341       ret = SVGA3D_vgpu10_SetSamplers(svga->swc,
 342                                       1, /* count */
 343                                       unit, /* start */
 344                                       SVGA3D_SHADERTYPE_PS,
 345                                       &sampler->id);
 346    }
 347
 348    return ret;
 349 }
 350
 351
 352 struct svga_tracked_state svga_hw_sampler = {
 353    "texture sampler emit",
 354    (SVGA_NEW_SAMPLER |
 355     SVGA_NEW_STIPPLE |
 356     SVGA_NEW_TEXTURE_FLAGS),
 357    update_samplers
 358 };