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      1 /*
      2  * Copyright (C) 2011 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 "rsFBOCache.h"
     18 
     19 #include "rsContext.h"
     20 #include "rsAllocation.h"
     21 
     22 using namespace android;
     23 using namespace android::renderscript;
     24 
     25 
     26 FBOCache::FBOCache() {
     27     mDirty = true;
     28     mHal.state.colorTargetsCount = 1;
     29     mHal.state.colorTargets = new Allocation*[mHal.state.colorTargetsCount];
     30     mColorTargets = new ObjectBaseRef<Allocation>[mHal.state.colorTargetsCount];
     31     resetAll(NULL);
     32 }
     33 
     34 FBOCache::~FBOCache() {
     35     delete[] mHal.state.colorTargets;
     36     delete[] mColorTargets;
     37 }
     38 
     39 void FBOCache::init(Context *rsc) {
     40     rsc->mHal.funcs.framebuffer.init(rsc, this);
     41 }
     42 
     43 void FBOCache::deinit(Context *rsc) {
     44     rsc->mHal.funcs.framebuffer.destroy(rsc, this);
     45 }
     46 
     47 void FBOCache::bindColorTarget(Context *rsc, Allocation *a, uint32_t slot) {
     48     if (slot >= mHal.state.colorTargetsCount) {
     49         ALOGE("Invalid render target index");
     50         return;
     51     }
     52     if (a != NULL) {
     53         if (!(a->getIsTexture() || (a->mHal.state.usageFlags & RS_ALLOCATION_USAGE_IO_OUTPUT))) {
     54             ALOGE("Invalid Color Target");
     55             return;
     56         }
     57     }
     58     mColorTargets[slot].set(a);
     59     mHal.state.colorTargets[slot] = a;
     60     mDirty = true;
     61 }
     62 
     63 void FBOCache::bindDepthTarget(Context *rsc, Allocation *a) {
     64     if (a != NULL) {
     65         if (!a->getIsRenderTarget()) {
     66             ALOGE("Invalid Depth Target");
     67             return;
     68         }
     69     }
     70     mDepthTarget.set(a);
     71     mHal.state.depthTarget = a;
     72     mDirty = true;
     73 }
     74 
     75 void FBOCache::resetAll(Context *) {
     76     for (uint32_t i = 0; i < mHal.state.colorTargetsCount; i ++) {
     77         mColorTargets[i].set(NULL);
     78         mHal.state.colorTargets[i] = NULL;
     79     }
     80     mDepthTarget.set(NULL);
     81     mHal.state.depthTarget = NULL;
     82     mDirty = true;
     83 }
     84 
     85 void FBOCache::setup(Context *rsc) {
     86     if (!mDirty) {
     87         return;
     88     }
     89 
     90     rsc->mHal.funcs.framebuffer.setActive(rsc, this);
     91 
     92     mDirty = false;
     93 }
     94