19ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams/* 29ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams * Copyright (C) 2012 The Android Open Source Project 39ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams * 49ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams * Licensed under the Apache License, Version 2.0 (the "License"); 59ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams * you may not use this file except in compliance with the License. 69ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams * You may obtain a copy of the License at 79ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams * 89ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams * http://www.apache.org/licenses/LICENSE-2.0 99ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams * 109ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams * Unless required by applicable law or agreed to in writing, software 119ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams * distributed under the License is distributed on an "AS IS" BASIS, 129ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams * See the License for the specific language governing permissions and 149ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams * limitations under the License. 159ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams */ 169ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams 179ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams#include "ip.rsh" 189ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams#pragma rs_fp_relaxed 199ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams 209ba9a663a00c15d584a0a292bf74e154804240b5Jason Samsrs_allocation gBlur; 219ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams 229ba9a663a00c15d584a0a292bf74e154804240b5Jason Samsstatic float gOverWm1; 239ba9a663a00c15d584a0a292bf74e154804240b5Jason Samsstatic float gOverHm1; 249ba9a663a00c15d584a0a292bf74e154804240b5Jason Samsstatic uchar gLutR[256]; 259ba9a663a00c15d584a0a292bf74e154804240b5Jason Samsstatic uchar gLutG[256]; 269ba9a663a00c15d584a0a292bf74e154804240b5Jason Samsstatic uchar gLutB[256]; 279ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams 289ba9a663a00c15d584a0a292bf74e154804240b5Jason Samsvoid setup() { 299ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams int w = rsAllocationGetDimX(gBlur); 309ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams int h = rsAllocationGetDimY(gBlur); 319ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams gOverWm1 = 1.f / w; 329ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams gOverHm1 = 1.f / h; 339ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams 349ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams for (int x=0; x < 256; x++) { 359ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams gLutR[x] = x;//255-x; 369ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams gLutG[x] = x;//255-x; 379ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams gLutB[x] = x;//255-x; 389ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams } 399ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams} 409ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams 41025b5f82971c431eb22df3c9d0f00b3cbe426bdbChris Wailesuchar4 RS_KERNEL process(uchar4 in, uint32_t x, uint32_t y) { 429ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams float2 xyDist; 439ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams xyDist.x = (x * gOverWm1 - 0.5f); 449ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams xyDist.y = (y * gOverHm1 - 0.5f); 459ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams 469ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams // color 479ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams float4 v1 = rsUnpackColor8888(in); 489ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams float4 v2 = rsUnpackColor8888(rsGetElementAt_uchar4(gBlur, x, y)); 499ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams 509ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams float dist = dot(xyDist, xyDist) * 1.4f; 519ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams float pdist = native_powr(dist, 2.7f * 0.5f); 529ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams //float pdist = powr(dist, 2.7f * 0.5f); 539ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams 549ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams pdist = clamp(pdist, 0.f, 1.f); 559ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams v1 = mix(v1, v2, dist * 2.f); 569ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams v1 *= 1.f - pdist; 579ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams 589ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams // apply curve 599ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams uchar4 out = rsPackColorTo8888(v1); 609ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams 619ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams out.r = gLutR[out.r]; 629ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams out.g = gLutG[out.g]; 639ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams out.b = gLutB[out.b]; 649ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams return out; 659ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams} 669ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams 679ba9a663a00c15d584a0a292bf74e154804240b5Jason Sams 68