sampler.cpp revision c6db1b3396384186aab5b685fe1fd540e17b3a62
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
26using 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
35bool
36_cl_sampler::norm_mode() {
37   return __norm_mode;
38}
39
40cl_addressing_mode
41_cl_sampler::addr_mode() {
42   return __addr_mode;
43}
44
45cl_filter_mode
46_cl_sampler::filter_mode() {
47   return __filter_mode;
48}
49
50void *
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
70void
71_cl_sampler::unbind(clover::command_queue &q, void *st) {
72   q.pipe->delete_sampler_state(q.pipe, st);
73}
74