123e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams/* 223e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * Copyright (C) 2012 The Android Open Source Project 323e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * 423e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * Licensed under the Apache License, Version 2.0 (the "License"); 523e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * you may not use this file except in compliance with the License. 623e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * You may obtain a copy of the License at 723e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * 823e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * http://www.apache.org/licenses/LICENSE-2.0 923e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * 1023e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * Unless required by applicable law or agreed to in writing, software 1123e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * distributed under the License is distributed on an "AS IS" BASIS, 1223e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1323e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * See the License for the specific language governing permissions and 1423e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams * limitations under the License. 1523e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams */ 1623e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams 1723e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams#include "ip.rsh" 1823e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams#pragma rs_fp_relaxed 1923e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams 2023e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Samsrs_allocation gBlur; 2123e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams 2223e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Samsstatic float gOverWm1; 2323e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Samsstatic float gOverHm1; 2423e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Samsstatic uchar gLutR[256]; 2523e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Samsstatic uchar gLutG[256]; 2623e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Samsstatic uchar gLutB[256]; 2723e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams 2823e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Samsvoid setup() { 2923e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams int w = rsAllocationGetDimX(gBlur); 3023e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams int h = rsAllocationGetDimY(gBlur); 3123e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams gOverWm1 = 1.f / w; 3223e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams gOverHm1 = 1.f / h; 3323e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams 3423e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams for (int x=0; x < 256; x++) { 3523e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams gLutR[x] = x;//255-x; 3623e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams gLutG[x] = x;//255-x; 3723e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams gLutB[x] = x;//255-x; 3823e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams } 3923e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams} 4023e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams 41025b5f82971c431eb22df3c9d0f00b3cbe426bdbChris Wailesuchar4 RS_KERNEL process(uchar4 in, uint32_t x, uint32_t y) { 4223e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams float2 xyDist; 4323e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams xyDist.x = (x * gOverWm1 - 0.5f); 4423e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams xyDist.y = (y * gOverHm1 - 0.5f); 4523e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams 4623e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams // color 4723e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams float4 v1 = rsUnpackColor8888(in); 4823e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams float4 v2 = rsUnpackColor8888(rsGetElementAt_uchar4(gBlur, x, y)); 4923e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams 5023e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams float dist = dot(xyDist, xyDist) * 1.4f; 5123e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams float pdist = native_powr(dist, 2.7f * 0.5f); 5223e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams //float pdist = powr(dist, 2.7f * 0.5f); 5323e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams 5423e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams pdist = clamp(pdist, 0.f, 1.f); 5523e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams v1 = mix(v1, v2, dist * 2.f); 5623e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams v1 *= 1.f - pdist; 5723e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams 5823e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams // apply curve 5923e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams uchar4 out = rsPackColorTo8888(v1); 6023e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams 6123e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams out.r = gLutR[out.r]; 6223e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams out.g = gLutG[out.g]; 6323e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams out.b = gLutB[out.b]; 6423e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams return out; 6523e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams} 6623e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams 6723e1074f29f431f68c6b3230c1315ea0f7c7bc86Jason Sams 68