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_shader.h"
  44 #include "svga_state.h"
  45 #include "svga_sampler_view.h"
  46
  47
  48 /** Get resource handle for a texture or buffer */
  49 static inline struct svga_winsys_surface *
  50 svga_resource_handle(struct pipe_resource *res)
  51 {
  52    if (res->target == PIPE_BUFFER) {
  53       return svga_buffer(res)->handle;
  54    }
  55    else {
  56       return svga_texture(res)->handle;
  57    }
  58 }
  59
  60
  61 /**
  62  * This helper function returns TRUE if the specified resource collides with
  63  * any of the resources bound to any of the currently bound sampler views.
  64  */
  65 boolean
  66 svga_check_sampler_view_resource_collision(struct svga_context *svga,
  67                                            struct svga_winsys_surface *res,
  68                                            unsigned shader)
  69 {
  70    struct pipe_screen *screen = svga->pipe.screen;
  71    unsigned i;
  72
  73    if (svga_screen(screen)->debug.no_surface_view) {
  74       return FALSE;
  75    }
  76
  77    for (i = 0; i < svga->curr.num_sampler_views[shader]; i++) {
  78       struct svga_pipe_sampler_view *sv =
  79          svga_pipe_sampler_view(svga->curr.sampler_views[shader][i]);
  80
  81       if (sv && res == svga_resource_handle(sv->base.texture)) {
  82          return TRUE;
  83       }
  84    }
  85
  86    return FALSE;
  87 }
  88
  89
  90 /**
  91  * Create a DX ShaderResourceSamplerView for the given pipe_sampler_view,
  92  * if needed.
  93  */
  94 enum pipe_error
  95 svga_validate_pipe_sampler_view(struct svga_context *svga,
  96                                 struct svga_pipe_sampler_view *sv)
  97 {
  98    enum pipe_error ret = PIPE_OK;
  99
 100    if (sv->id == SVGA3D_INVALID_ID) {
 101       struct svga_screen *ss = svga_screen(svga->pipe.screen);
 102       struct pipe_resource *texture = sv->base.texture;
 103       struct svga_winsys_surface *surface = svga_resource_handle(texture);
 104       SVGA3dSurfaceFormat format;
 105       SVGA3dResourceType resourceDim;
 106       SVGA3dShaderResourceViewDesc viewDesc;
 107       enum pipe_format pformat = sv->base.format;
 108
 109       /* vgpu10 cannot create a BGRX view for a BGRA resource, so force it to
 110        * create a BGRA view (and vice versa).
 111        */
 112       if (pformat == PIPE_FORMAT_B8G8R8X8_UNORM &&
 113           sv->base.texture->format == PIPE_FORMAT_B8G8R8A8_UNORM) {
 114          pformat = PIPE_FORMAT_B8G8R8A8_UNORM;
 115       }
 116       else if (pformat == PIPE_FORMAT_B8G8R8A8_UNORM &&
 117           sv->base.texture->format == PIPE_FORMAT_B8G8R8X8_UNORM) {
 118          pformat = PIPE_FORMAT_B8G8R8X8_UNORM;
 119       }
 120
 121       format = svga_translate_format(ss, pformat,
 122                                      PIPE_BIND_SAMPLER_VIEW);
 123       assert(format != SVGA3D_FORMAT_INVALID);
 124
 125       /* Convert the format to a sampler-friendly format, if needed */
 126       format = svga_sampler_format(format);
 127
 128       if (texture->target == PIPE_BUFFER) {
 129          unsigned elem_size = util_format_get_blocksize(sv->base.format);
 130
 131          viewDesc.buffer.firstElement = sv->base.u.buf.offset / elem_size;
 132          viewDesc.buffer.numElements = sv->base.u.buf.size / elem_size;
 133       }
 134       else {
 135          viewDesc.tex.mostDetailedMip = sv->base.u.tex.first_level;
 136          viewDesc.tex.firstArraySlice = sv->base.u.tex.first_layer;
 137          viewDesc.tex.mipLevels = (sv->base.u.tex.last_level -
 138                                    sv->base.u.tex.first_level + 1);
 139       }
 140
 141       /* arraySize in viewDesc specifies the number of array slices in a
 142        * texture array. For 3D texture, last_layer in
 143        * pipe_sampler_view specifies the last slice of the texture
 144        * which is different from the last slice in a texture array,
 145        * hence we need to set arraySize to 1 explicitly.
 146        */
 147       viewDesc.tex.arraySize =
 148          (texture->target == PIPE_TEXTURE_3D ||
 149           texture->target == PIPE_BUFFER) ? 1 :
 150             (sv->base.u.tex.last_layer - sv->base.u.tex.first_layer + 1);
 151
 152       switch (texture->target) {
 153       case PIPE_BUFFER:
 154          resourceDim = SVGA3D_RESOURCE_BUFFER;
 155          break;
 156       case PIPE_TEXTURE_1D:
 157       case PIPE_TEXTURE_1D_ARRAY:
 158          resourceDim = SVGA3D_RESOURCE_TEXTURE1D;
 159          break;
 160       case PIPE_TEXTURE_RECT:
 161       case PIPE_TEXTURE_2D:
 162       case PIPE_TEXTURE_2D_ARRAY:
 163          resourceDim = SVGA3D_RESOURCE_TEXTURE2D;
 164          break;
 165       case PIPE_TEXTURE_3D:
 166          resourceDim = SVGA3D_RESOURCE_TEXTURE3D;
 167          break;
 168       case PIPE_TEXTURE_CUBE:
 169       case PIPE_TEXTURE_CUBE_ARRAY:
 170          resourceDim = SVGA3D_RESOURCE_TEXTURECUBE;
 171          break;
 172
 173       default:
 174          assert(!"Unexpected texture type");
 175          resourceDim = SVGA3D_RESOURCE_TEXTURE2D;
 176       }
 177
 178       sv->id = util_bitmask_add(svga->sampler_view_id_bm);
 179
 180       ret = SVGA3D_vgpu10_DefineShaderResourceView(svga->swc,
 181                                                    sv->id,
 182                                                    surface,
 183                                                    format,
 184                                                    resourceDim,
 185                                                    &viewDesc);
 186       if (ret != PIPE_OK) {
 187          util_bitmask_clear(svga->sampler_view_id_bm, sv->id);
 188          sv->id = SVGA3D_INVALID_ID;
 189       }
 190    }
 191
 192    return ret;
 193 }
 194
 195
 196 static enum pipe_error
 197 update_sampler_resources(struct svga_context *svga, unsigned dirty)
 198 {
 199    enum pipe_error ret = PIPE_OK;
 200    unsigned shader;
 201
 202    if (!svga_have_vgpu10(svga))
 203       return PIPE_OK;
 204
 205    for (shader = PIPE_SHADER_VERTEX; shader <= PIPE_SHADER_GEOMETRY; shader++) {
 206       SVGA3dShaderResourceViewId ids[PIPE_MAX_SAMPLERS];
 207       struct svga_winsys_surface *surfaces[PIPE_MAX_SAMPLERS];
 208       unsigned count;
 209       unsigned nviews;
 210       unsigned i;
 211
 212       count = svga->curr.num_sampler_views[shader];
 213       for (i = 0; i < count; i++) {
 214          struct svga_pipe_sampler_view *sv =
 215             svga_pipe_sampler_view(svga->curr.sampler_views[shader][i]);
 216          struct svga_winsys_surface *surface;
 217
 218          if (sv) {
 219             surface = svga_resource_handle(sv->base.texture);
 220
 221             ret = svga_validate_pipe_sampler_view(svga, sv);
 222             if (ret != PIPE_OK)
 223                return ret;
 224
 225             assert(sv->id != SVGA3D_INVALID_ID);
 226             ids[i] = sv->id;
 227          }
 228          else {
 229             surface = NULL;
 230             ids[i] = SVGA3D_INVALID_ID;
 231          }
 232          surfaces[i] = surface;
 233       }
 234
 235       for (; i < ARRAY_SIZE(ids); i++) {
 236          ids[i] = SVGA3D_INVALID_ID;
 237          surfaces[i] = NULL;
 238       }
 239
 240       if (shader == PIPE_SHADER_FRAGMENT) {
 241          /* Handle polygon stipple sampler view */
 242          if (svga->curr.rast->templ.poly_stipple_enable) {
 243             const unsigned unit = svga->state.hw_draw.fs->pstipple_sampler_unit;
 244             struct svga_pipe_sampler_view *sv =
 245                svga->polygon_stipple.sampler_view;
 246
 247             assert(sv);
 248             if (!sv) {
 249                return PIPE_OK;  /* probably out of memory */
 250             }
 251
 252             ret = svga_validate_pipe_sampler_view(svga, sv);
 253             if (ret != PIPE_OK)
 254                return ret;
 255
 256             ids[unit] = sv->id;
 257             surfaces[unit] = svga_resource_handle(sv->base.texture);
 258             count = MAX2(count, unit+1);
 259          }
 260       }
 261
 262       /* Number of ShaderResources that need to be modified. This includes
 263        * the one that need to be unbound.
 264        */
 265       nviews = MAX2(svga->state.hw_draw.num_sampler_views[shader], count);
 266       if (nviews > 0) {
 267          ret = SVGA3D_vgpu10_SetShaderResources(svga->swc,
 268                                                 svga_shader_type(shader),
 269                                                 0, /* startView */
 270                                                 nviews,
 271                                                 ids,
 272                                                 surfaces);
 273          if (ret != PIPE_OK)
 274             return ret;
 275       }
 276
 277       /* Number of sampler views enabled in the device */
 278       svga->state.hw_draw.num_sampler_views[shader] = count;
 279    }
 280
 281    return ret;
 282 }
 283
 284
 285 struct svga_tracked_state svga_hw_sampler_bindings = {
 286    "shader resources emit",
 287    SVGA_NEW_STIPPLE |
 288    SVGA_NEW_TEXTURE_BINDING,
 289    update_sampler_resources
 290 };
 291
 292
 293
 294 static enum pipe_error
 295 update_samplers(struct svga_context *svga, unsigned dirty )
 296 {
 297    enum pipe_error ret = PIPE_OK;
 298    unsigned shader;
 299
 300    if (!svga_have_vgpu10(svga))
 301       return PIPE_OK;
 302
 303    for (shader = PIPE_SHADER_VERTEX; shader <= PIPE_SHADER_GEOMETRY; shader++) {
 304       const unsigned count = svga->curr.num_samplers[shader];
 305       SVGA3dSamplerId ids[PIPE_MAX_SAMPLERS];
 306       unsigned i;
 307
 308       for (i = 0; i < count; i++) {
 309          if (svga->curr.sampler[shader][i]) {
 310             ids[i] = svga->curr.sampler[shader][i]->id;
 311             assert(ids[i] != SVGA3D_INVALID_ID);
 312          }
 313          else {
 314             ids[i] = SVGA3D_INVALID_ID;
 315          }
 316       }
 317
 318       if (count > 0) {
 319          if (count != svga->state.hw_draw.num_samplers[shader] ||
 320              memcmp(ids, svga->state.hw_draw.samplers[shader],
 321                     count * sizeof(ids[0])) != 0) {
 322             /* HW state is really changing */
 323             ret = SVGA3D_vgpu10_SetSamplers(svga->swc,
 324                                             count,
 325                                             0,                       /* start */
 326                                             svga_shader_type(shader), /* type */
 327                                             ids);
 328             if (ret != PIPE_OK)
 329                return ret;
 330             memcpy(svga->state.hw_draw.samplers[shader], ids,
 331                    count * sizeof(ids[0]));
 332             svga->state.hw_draw.num_samplers[shader] = count;
 333          }
 334       }
 335    }
 336
 337    /* Handle polygon stipple sampler texture */
 338    if (svga->curr.rast->templ.poly_stipple_enable) {
 339       const unsigned unit = svga->state.hw_draw.fs->pstipple_sampler_unit;
 340       struct svga_sampler_state *sampler = svga->polygon_stipple.sampler;
 341
 342       assert(sampler);
 343       if (!sampler) {
 344          return PIPE_OK; /* probably out of memory */
 345       }
 346
 347       ret = SVGA3D_vgpu10_SetSamplers(svga->swc,
 348                                       1, /* count */
 349                                       unit, /* start */
 350                                       SVGA3D_SHADERTYPE_PS,
 351                                       &sampler->id);
 352    }
 353
 354    return ret;
 355 }
 356
 357
 358 struct svga_tracked_state svga_hw_sampler = {
 359    "texture sampler emit",
 360    (SVGA_NEW_SAMPLER |
 361     SVGA_NEW_STIPPLE |
 362     SVGA_NEW_TEXTURE_FLAGS),
 363    update_samplers
 364 };