lukaszmargielewski

 // For stackoverflow question: 
 // http://stackoverflow.com/questions/30445801/ios8-metal-compute-pipeline-slower-than-cpu
 
 // I. CODE INVOKED ONCE, AT THE INIT STAGE:
 
 _mtlCharTable       = [_mtlDevice newBufferWithBytes:_charTable->pointer length:_charTable->bytesTotal options:0];
 _mtlSearchMasks     = [_mtlDevice newBufferWithBytesNoCopy:_searchIndexes.mask length:_searchIndexes.bytesTotalMask options:0 deallocator:nil];
                           
    //iPhone 6: maxTotalThreadsPerThreadgroup: 512, threadExecutionWidth: 32
    uint threadsPerThreadGroup = [_mtlComputePipelineState maxTotalThreadsPerThreadgroup];// / 4.0;

lukaszmargielewski

protocol AProtocol {}

protocol ABProtocol: AProtocol {}

struct ABStruct: ABProtocol {}

struct Wrapper<T> {
    let object: T
}

lukaszmargielewski

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
    
    UITableViewCell *cell = [self tableView:tableView cellForRowAtIndexPath:indexPath isOffscreen:YES];
    
    cell.bounds = CGRectMake(0.0f, 0.0f, CGRectGetWidth(tableView.bounds), 10000);
    
    [cell updateConstraintsIfNeeded];
    [cell layoutIfNeeded];
    
    CGFloat heightText = cell.shows_lower_panel ? CGRectGetMaxY(cell.countImageView.frame) : MAX(CGRectGetMaxY(cell.circleImageView.frame), CGRectGetMaxY(ccc.titleLabel.frame));

lukaszmargielewski

#include <metal_stdlib>
using namespace metal;

// Every kernel processes 1 row of the char table:
kernel void lmCharSearch(
                         
const device        char *charTable               [[ buffer(0) ]],
constant            uint &charsInRow              [[ buffer(1) ]],
constant            uint &rowCount                [[ buffer(2) ]],
const device        char *searchPhrase            [[ buffer(3) ]],