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      1 /*
      2  * Copyright (C) 2008-2012 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include "RenderScript.h"
     18 
     19 using namespace android;
     20 using namespace RSC;
     21 
     22 Sampler::Sampler(sp<RS> rs, void* id):
     23     BaseObj(id, rs)
     24 {
     25     RsSamplerValue mMin = RS_SAMPLER_INVALID;
     26     RsSamplerValue mMag = RS_SAMPLER_INVALID;
     27     RsSamplerValue mWrapS = RS_SAMPLER_INVALID;;
     28     RsSamplerValue mWrapT = RS_SAMPLER_INVALID;;
     29     float mAniso = 0.f;
     30 }
     31 
     32 RsSamplerValue Sampler::getMinification() {
     33     return mMin;
     34 }
     35 
     36 RsSamplerValue Sampler::getMagnification() {
     37     return mMag;
     38 }
     39 
     40 RsSamplerValue Sampler::getWrapS() {
     41     return mWrapS;
     42 }
     43 
     44 RsSamplerValue Sampler::getWrapT() {
     45     return mWrapT;
     46 }
     47 
     48 float Sampler::getAnisotropy() {
     49     return mAniso;
     50 }
     51 
     52 sp<Sampler> Sampler::create(sp<RS> rs, RsSamplerValue min, RsSamplerValue mag, RsSamplerValue wrapS, RsSamplerValue wrapT, float anisotropy) {
     53     // we aren't supporting wrapR in C++ API atm, so always pass wrap for that
     54     void* id = RS::dispatch->SamplerCreate(rs.get(), min, mag, wrapS, wrapT, RS_SAMPLER_WRAP, anisotropy);
     55     return new Sampler(rs, id);
     56 }
     57 
     58 #define CREATE_SAMPLER(N, MIN, MAG, WRAPS, WRAPT) sp<const Sampler> Sampler::N(sp<RS> rs) { \
     59         if (rs->mSamplers.N == NULL) {                                  \
     60             rs->mSamplers.N = (create(rs, MIN, MAG, WRAPS, WRAPT, 0.f)); \
     61         }                                                               \
     62         return rs->mSamplers.N;                                         \
     63     }
     64 
     65 CREATE_SAMPLER(CLAMP_NEAREST, RS_SAMPLER_CLAMP, RS_SAMPLER_CLAMP, RS_SAMPLER_NEAREST, RS_SAMPLER_NEAREST);
     66 CREATE_SAMPLER(CLAMP_LINEAR, RS_SAMPLER_CLAMP, RS_SAMPLER_CLAMP, RS_SAMPLER_LINEAR, RS_SAMPLER_LINEAR);
     67 CREATE_SAMPLER(CLAMP_LINEAR_MIP_LINEAR, RS_SAMPLER_CLAMP, RS_SAMPLER_CLAMP, RS_SAMPLER_LINEAR_MIP_LINEAR, RS_SAMPLER_LINEAR_MIP_LINEAR);
     68 CREATE_SAMPLER(WRAP_NEAREST, RS_SAMPLER_WRAP, RS_SAMPLER_WRAP, RS_SAMPLER_NEAREST, RS_SAMPLER_NEAREST);
     69 CREATE_SAMPLER(WRAP_LINEAR, RS_SAMPLER_WRAP, RS_SAMPLER_WRAP, RS_SAMPLER_LINEAR, RS_SAMPLER_LINEAR);
     70 CREATE_SAMPLER(WRAP_LINEAR_MIP_LINEAR, RS_SAMPLER_WRAP, RS_SAMPLER_WRAP, RS_SAMPLER_LINEAR_MIP_LINEAR, RS_SAMPLER_LINEAR_MIP_LINEAR);
     71 CREATE_SAMPLER(MIRRORED_REPEAT_NEAREST, RS_SAMPLER_MIRRORED_REPEAT, RS_SAMPLER_MIRRORED_REPEAT, RS_SAMPLER_NEAREST, RS_SAMPLER_NEAREST);
     72 CREATE_SAMPLER(MIRRORED_REPEAT_LINEAR, RS_SAMPLER_MIRRORED_REPEAT, RS_SAMPLER_MIRRORED_REPEAT, RS_SAMPLER_LINEAR, RS_SAMPLER_LINEAR);
     73 CREATE_SAMPLER(MIRRORED_REPEAT_LINEAR_MIP_LINEAR, RS_SAMPLER_MIRRORED_REPEAT, RS_SAMPLER_MIRRORED_REPEAT, RS_SAMPLER_LINEAR_MIP_LINEAR, RS_SAMPLER_LINEAR_MIP_LINEAR);
     74