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      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 BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
     18 // WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
     19 // OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     20 // SOFTWARE.
     21 //
     22 
     23 #include "core/sampler.hpp"
     24 #include "pipe/p_state.h"
     25 
     26 using namespace clover;
     27 
     28 _cl_sampler::_cl_sampler(clover::context &ctx, bool norm_mode,
     29                          cl_addressing_mode addr_mode,
     30                          cl_filter_mode filter_mode) :
     31    ctx(ctx), __norm_mode(norm_mode),
     32    __addr_mode(addr_mode), __filter_mode(filter_mode) {
     33 }
     34 
     35 bool
     36 _cl_sampler::norm_mode() {
     37    return __norm_mode;
     38 }
     39 
     40 cl_addressing_mode
     41 _cl_sampler::addr_mode() {
     42    return __addr_mode;
     43 }
     44 
     45 cl_filter_mode
     46 _cl_sampler::filter_mode() {
     47    return __filter_mode;
     48 }
     49 
     50 void *
     51 _cl_sampler::bind(clover::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 _cl_sampler::unbind(clover::command_queue &q, void *st) {
     72    q.pipe->delete_sampler_state(q.pipe, st);
     73 }
     74