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 static 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
 107       format = svga_translate_format(ss, sv->base.format,
 108                                      PIPE_BIND_SAMPLER_VIEW);
 109       assert(format != SVGA3D_FORMAT_INVALID);
 110
 111       /* Convert the format to a sampler-friendly format, if needed */
 112       format = svga_sampler_format(format);
 113
 114       if (texture->target == PIPE_BUFFER) {
 115          viewDesc.buffer.firstElement = sv->base.u.buf.first_element;
 116          viewDesc.buffer.numElements = (sv->base.u.buf.last_element -
 117                                         sv->base.u.buf.first_element + 1);
 118       }
 119       else {
 120          viewDesc.tex.mostDetailedMip = sv->base.u.tex.first_level;
 121          viewDesc.tex.firstArraySlice = sv->base.u.tex.first_layer;
 122          viewDesc.tex.mipLevels = (sv->base.u.tex.last_level -
 123                                    sv->base.u.tex.first_level + 1);
 124       }
 125
 126       /* arraySize in viewDesc specifies the number of array slices in a
 127        * texture array. For 3D texture, last_layer in
 128        * pipe_sampler_view specifies the last slice of the texture
 129        * which is different from the last slice in a texture array,
 130        * hence we need to set arraySize to 1 explicitly.
 131        */
 132       viewDesc.tex.arraySize =
 133          (texture->target == PIPE_TEXTURE_3D ||
 134           texture->target == PIPE_BUFFER) ? 1 :
 135             (sv->base.u.tex.last_layer - sv->base.u.tex.first_layer + 1);
 136
 137       switch (texture->target) {
 138       case PIPE_BUFFER:
 139          resourceDim = SVGA3D_RESOURCE_BUFFER;
 140          break;
 141       case PIPE_TEXTURE_1D:
 142       case PIPE_TEXTURE_1D_ARRAY:
 143          resourceDim = SVGA3D_RESOURCE_TEXTURE1D;
 144          break;
 145       case PIPE_TEXTURE_RECT:
 146       case PIPE_TEXTURE_2D:
 147       case PIPE_TEXTURE_2D_ARRAY:
 148          resourceDim = SVGA3D_RESOURCE_TEXTURE2D;
 149          break;
 150       case PIPE_TEXTURE_3D:
 151          resourceDim = SVGA3D_RESOURCE_TEXTURE3D;
 152          break;
 153       case PIPE_TEXTURE_CUBE:
 154       case PIPE_TEXTURE_CUBE_ARRAY:
 155          resourceDim = SVGA3D_RESOURCE_TEXTURECUBE;
 156          break;
 157
 158       default:
 159          assert(!"Unexpected texture type");
 160          resourceDim = SVGA3D_RESOURCE_TEXTURE2D;
 161       }
 162
 163       sv->id = util_bitmask_add(svga->sampler_view_id_bm);
 164
 165       ret = SVGA3D_vgpu10_DefineShaderResourceView(svga->swc,
 166                                                    sv->id,
 167                                                    surface,
 168                                                    format,
 169                                                    resourceDim,
 170                                                    &viewDesc);
 171       if (ret != PIPE_OK) {
 172          util_bitmask_clear(svga->sampler_view_id_bm, sv->id);
 173          sv->id = SVGA3D_INVALID_ID;
 174       }
 175    }
 176
 177    return ret;
 178 }
 179
 180
 181 static enum pipe_error
 182 update_sampler_resources(struct svga_context *svga, unsigned dirty)
 183 {
 184    enum pipe_error ret = PIPE_OK;
 185    unsigned shader;
 186
 187    if (!svga_have_vgpu10(svga))
 188       return PIPE_OK;
 189
 190    for (shader = PIPE_SHADER_VERTEX; shader <= PIPE_SHADER_GEOMETRY; shader++) {
 191       SVGA3dShaderResourceViewId ids[PIPE_MAX_SAMPLERS];
 192       struct svga_winsys_surface *surfaces[PIPE_MAX_SAMPLERS];
 193       unsigned count;
 194       unsigned nviews;
 195       unsigned i;
 196
 197       count = svga->curr.num_sampler_views[shader];
 198       for (i = 0; i < count; i++) {
 199          struct svga_pipe_sampler_view *sv =
 200             svga_pipe_sampler_view(svga->curr.sampler_views[shader][i]);
 201          struct svga_winsys_surface *surface;
 202
 203          if (sv) {
 204             surface = svga_resource_handle(sv->base.texture);
 205
 206             ret = svga_validate_pipe_sampler_view(svga, sv);
 207             if (ret != PIPE_OK)
 208                return ret;
 209
 210             assert(sv->id != SVGA3D_INVALID_ID);
 211             ids[i] = sv->id;
 212          }
 213          else {
 214             surface = NULL;
 215             ids[i] = SVGA3D_INVALID_ID;
 216          }
 217          surfaces[i] = surface;
 218       }
 219
 220       for (; i < Elements(ids); i++) {
 221          ids[i] = SVGA3D_INVALID_ID;
 222          surfaces[i] = NULL;
 223       }
 224
 225       if (shader == PIPE_SHADER_FRAGMENT) {
 226          /* Handle polygon stipple sampler view */
 227          if (svga->curr.rast->templ.poly_stipple_enable) {
 228             const unsigned unit = svga->state.hw_draw.fs->pstipple_sampler_unit;
 229             struct svga_pipe_sampler_view *sv =
 230                svga->polygon_stipple.sampler_view;
 231
 232             assert(sv);
 233             if (!sv) {
 234                return PIPE_OK;  /* probably out of memory */
 235             }
 236
 237             ret = svga_validate_pipe_sampler_view(svga, sv);
 238             if (ret != PIPE_OK)
 239                return ret;
 240
 241             ids[unit] = sv->id;
 242             surfaces[unit] = svga_resource_handle(sv->base.texture);
 243             count = MAX2(count, unit+1);
 244          }
 245       }
 246
 247       /* Number of ShaderResources that need to be modified. This includes
 248        * the one that need to be unbound.
 249        */
 250       nviews = MAX2(svga->state.hw_draw.num_sampler_views[shader], count);
 251       if (nviews > 0) {
 252          ret = SVGA3D_vgpu10_SetShaderResources(svga->swc,
 253                                                 svga_shader_type(shader),
 254                                                 0, /* startView */
 255                                                 nviews,
 256                                                 ids,
 257                                                 surfaces);
 258          if (ret != PIPE_OK)
 259             return ret;
 260       }
 261
 262       /* Number of sampler views enabled in the device */
 263       svga->state.hw_draw.num_sampler_views[shader] = count;
 264    }
 265
 266    return ret;
 267 }
 268
 269
 270 struct svga_tracked_state svga_hw_sampler_bindings = {
 271    "shader resources emit",
 272    SVGA_NEW_STIPPLE |
 273    SVGA_NEW_TEXTURE_BINDING,
 274    update_sampler_resources
 275 };
 276
 277
 278
 279 static enum pipe_error
 280 update_samplers(struct svga_context *svga, unsigned dirty )
 281 {
 282    enum pipe_error ret = PIPE_OK;
 283    unsigned shader;
 284
 285    if (!svga_have_vgpu10(svga))
 286       return PIPE_OK;
 287
 288    for (shader = PIPE_SHADER_VERTEX; shader <= PIPE_SHADER_GEOMETRY; shader++) {
 289       const unsigned count = svga->curr.num_samplers[shader];
 290       SVGA3dSamplerId ids[PIPE_MAX_SAMPLERS];
 291       unsigned i;
 292
 293       for (i = 0; i < count; i++) {
 294          if (svga->curr.sampler[shader][i]) {
 295             ids[i] = svga->curr.sampler[shader][i]->id;
 296             assert(ids[i] != SVGA3D_INVALID_ID);
 297          }
 298          else {
 299             ids[i] = SVGA3D_INVALID_ID;
 300          }
 301       }
 302
 303       if (count > 0) {
 304          if (count != svga->state.hw_draw.num_samplers[shader] ||
 305              memcmp(ids, svga->state.hw_draw.samplers[shader],
 306                     count * sizeof(ids[0])) != 0) {
 307             /* HW state is really changing */
 308             ret = SVGA3D_vgpu10_SetSamplers(svga->swc,
 309                                             count,
 310                                             0,                       /* start */
 311                                             svga_shader_type(shader), /* type */
 312                                             ids);
 313             if (ret != PIPE_OK)
 314                return ret;
 315             memcpy(svga->state.hw_draw.samplers[shader], ids,
 316                    count * sizeof(ids[0]));
 317             svga->state.hw_draw.num_samplers[shader] = count;
 318          }
 319       }
 320    }
 321
 322    /* Handle polygon stipple sampler texture */
 323    if (svga->curr.rast->templ.poly_stipple_enable) {
 324       const unsigned unit = svga->state.hw_draw.fs->pstipple_sampler_unit;
 325       struct svga_sampler_state *sampler = svga->polygon_stipple.sampler;
 326
 327       assert(sampler);
 328       if (!sampler) {
 329          return PIPE_OK; /* probably out of memory */
 330       }
 331
 332       ret = SVGA3D_vgpu10_SetSamplers(svga->swc,
 333                                       1, /* count */
 334                                       unit, /* start */
 335                                       SVGA3D_SHADERTYPE_PS,
 336                                       &sampler->id);
 337    }
 338
 339    return ret;
 340 }
 341
 342
 343 struct svga_tracked_state svga_hw_sampler = {
 344    "texture sampler emit",
 345    (SVGA_NEW_SAMPLER |
 346     SVGA_NEW_STIPPLE |
 347     SVGA_NEW_TEXTURE_FLAGS),
 348    update_samplers
 349 };