| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #pragma version(1) |
| #pragma rs java_package_name(com.android.rs.sample) |
| #include "rs_graphics.rsh" |
| |
| static rs_allocation sourceAlloc; |
| static rs_allocation destAlloc; |
| static rs_sampler allocSampler; |
| |
| void setSampleData(rs_allocation dest, rs_allocation source, rs_sampler sampler) { |
| destAlloc = dest; |
| sourceAlloc = source; |
| allocSampler = sampler; |
| } |
| |
| void root(uchar4 *out, uint32_t x, uint32_t y) { |
| |
| float destX = (float)rsAllocationGetDimX(destAlloc) - 1.0f; |
| float destY = (float)rsAllocationGetDimY(destAlloc) - 1.0f; |
| |
| float2 uv; |
| uv.x = (float)x / destX; |
| uv.y = (float)y / destY; |
| |
| out->xyz = convert_uchar3(rsSample(sourceAlloc, allocSampler, uv*2.0f).xyz); |
| out->w = 0xff; |
| } |
| |