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      1 /*
      2  * Copyright (C) 2009 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 "rsContext.h"
     18 #include "rsSampler.h"
     19 #include "rs.h"
     20 
     21 using namespace android;
     22 using namespace android::renderscript;
     23 
     24 
     25 Sampler::Sampler(Context *rsc) : ObjectBase(rsc) {
     26     // Should not get called.
     27     rsAssert(0);
     28 }
     29 
     30 Sampler::Sampler(Context *rsc,
     31                  RsSamplerValue magFilter,
     32                  RsSamplerValue minFilter,
     33                  RsSamplerValue wrapS,
     34                  RsSamplerValue wrapT,
     35                  RsSamplerValue wrapR,
     36                  float aniso) : ObjectBase(rsc) {
     37     mHal.state.magFilter = magFilter;
     38     mHal.state.minFilter = minFilter;
     39     mHal.state.wrapS = wrapS;
     40     mHal.state.wrapT = wrapT;
     41     mHal.state.wrapR = wrapR;
     42     mHal.state.aniso = aniso;
     43 
     44     mRSC->mHal.funcs.sampler.init(mRSC, this);
     45 }
     46 
     47 Sampler::~Sampler() {
     48     mRSC->mHal.funcs.sampler.destroy(mRSC, this);
     49 }
     50 
     51 void Sampler::preDestroy() const {
     52     for (uint32_t ct = 0; ct < mRSC->mStateSampler.mAllSamplers.size(); ct++) {
     53         if (mRSC->mStateSampler.mAllSamplers[ct] == this) {
     54             mRSC->mStateSampler.mAllSamplers.removeAt(ct);
     55             break;
     56         }
     57     }
     58 }
     59 
     60 void Sampler::bindToContext(SamplerState *ss, uint32_t slot) {
     61     ss->mSamplers[slot].set(this);
     62     mBoundSlot = slot;
     63 }
     64 
     65 void Sampler::unbindFromContext(SamplerState *ss) {
     66     int32_t slot = mBoundSlot;
     67     mBoundSlot = -1;
     68     ss->mSamplers[slot].clear();
     69 }
     70 
     71 void Sampler::serialize(Context *rsc, OStream *stream) const {
     72 }
     73 
     74 Sampler *Sampler::createFromStream(Context *rsc, IStream *stream) {
     75     return NULL;
     76 }
     77 
     78 ObjectBaseRef<Sampler> Sampler::getSampler(Context *rsc,
     79                                            RsSamplerValue magFilter,
     80                                            RsSamplerValue minFilter,
     81                                            RsSamplerValue wrapS,
     82                                            RsSamplerValue wrapT,
     83                                            RsSamplerValue wrapR,
     84                                            float aniso) {
     85     ObjectBaseRef<Sampler> returnRef;
     86     ObjectBase::asyncLock();
     87     for (uint32_t ct = 0; ct < rsc->mStateSampler.mAllSamplers.size(); ct++) {
     88         Sampler *existing = rsc->mStateSampler.mAllSamplers[ct];
     89         if (existing->mHal.state.magFilter != magFilter) continue;
     90         if (existing->mHal.state.minFilter != minFilter ) continue;
     91         if (existing->mHal.state.wrapS != wrapS) continue;
     92         if (existing->mHal.state.wrapT != wrapT) continue;
     93         if (existing->mHal.state.wrapR != wrapR) continue;
     94         if (existing->mHal.state.aniso != aniso) continue;
     95         returnRef.set(existing);
     96         ObjectBase::asyncUnlock();
     97         return returnRef;
     98     }
     99     ObjectBase::asyncUnlock();
    100 
    101     void* allocMem = rsc->mHal.funcs.allocRuntimeMem(sizeof(Sampler), 0);
    102     if (!allocMem) {
    103         rsc->setError(RS_ERROR_FATAL_DRIVER, "Couldn't allocate memory for Allocation");
    104         return NULL;
    105     }
    106 
    107     Sampler *s = new (allocMem) Sampler(rsc, magFilter, minFilter, wrapS, wrapT, wrapR, aniso);
    108     returnRef.set(s);
    109 
    110     ObjectBase::asyncLock();
    111     rsc->mStateSampler.mAllSamplers.push(s);
    112     ObjectBase::asyncUnlock();
    113 
    114     return returnRef;
    115 }
    116 
    117 void Sampler::operator delete(void* ptr) {
    118     if (ptr) {
    119         Sampler *s = (Sampler*) ptr;
    120         s->getContext()->mHal.funcs.freeRuntimeMem(ptr);
    121     }
    122 }
    123 
    124 
    125 ////////////////////////////////
    126 
    127 namespace android {
    128 namespace renderscript {
    129 
    130 RsSampler rsi_SamplerCreate(Context * rsc,
    131                             RsSamplerValue magFilter,
    132                             RsSamplerValue minFilter,
    133                             RsSamplerValue wrapS,
    134                             RsSamplerValue wrapT,
    135                             RsSamplerValue wrapR,
    136                             float aniso) {
    137     ObjectBaseRef<Sampler> s = Sampler::getSampler(rsc, magFilter, minFilter,
    138                                                    wrapS, wrapT, wrapR, aniso);
    139     s->incUserRef();
    140     return s.get();
    141 }
    142 
    143 }}
    144