src/gallium/frontends/clover/core/sampler.cpp

   1 //
   2 // Copyright 2012 Francisco Jerez
   3 //
   4 // Permission is hereby granted, free of charge, to any person obtaining a
   5 // copy of this software and associated documentation files (the "Software"),
   6 // to deal in the Software without restriction, including without limitation
   7 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 // and/or sell copies of the Software, and to permit persons to whom the
   9 // Software is furnished to do so, subject to the following conditions:
  10 //
  11 // The above copyright notice and this permission notice shall be included in
  12 // all copies or substantial portions of the Software.
  13 //
  14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18 // OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19 // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20 // OTHER DEALINGS IN THE SOFTWARE.
  21 //
  22
  23 #include "core/sampler.hpp"
  24 #include "pipe/p_state.h"
  25
  26 using namespace clover;
  27
  28 sampler::sampler(clover::context &ctx, bool norm_mode,
  29                  cl_addressing_mode addr_mode,
  30                  cl_filter_mode filter_mode) :
  31    context(ctx), _norm_mode(norm_mode),
  32    _addr_mode(addr_mode), _filter_mode(filter_mode) {
  33 }
  34
  35 bool
  36 sampler::norm_mode() {
  37    return _norm_mode;
  38 }
  39
  40 cl_addressing_mode
  41 sampler::addr_mode() {
  42    return _addr_mode;
  43 }
  44
  45 cl_filter_mode
  46 sampler::filter_mode() {
  47    return _filter_mode;
  48 }
  49
  50 void *
  51 sampler::bind(command_queue &q) {
  52    struct pipe_sampler_state info {};
  53
  54    info.normalized_coords = norm_mode();
  55
  56    info.wrap_s = info.wrap_t = info.wrap_r =
  57       (addr_mode() == CL_ADDRESS_CLAMP_TO_EDGE ? PIPE_TEX_WRAP_CLAMP_TO_EDGE :
  58        addr_mode() == CL_ADDRESS_CLAMP ? PIPE_TEX_WRAP_CLAMP_TO_BORDER :
  59        addr_mode() == CL_ADDRESS_REPEAT ? PIPE_TEX_WRAP_REPEAT :
  60        addr_mode() == CL_ADDRESS_MIRRORED_REPEAT ? PIPE_TEX_WRAP_MIRROR_REPEAT :
  61        PIPE_TEX_WRAP_CLAMP_TO_EDGE);
  62
  63    info.min_img_filter = info.mag_img_filter =
  64       (filter_mode() == CL_FILTER_LINEAR ? PIPE_TEX_FILTER_LINEAR :
  65        PIPE_TEX_FILTER_NEAREST);
  66
  67    return q.pipe->create_sampler_state(q.pipe, &info);
  68 }
  69
  70 void
  71 sampler::unbind(command_queue &q, void *st) {
  72    q.pipe->delete_sampler_state(q.pipe, st);
  73 }