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