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/*
* 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 * 255.0f);
out->w = 0xff;
}
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