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This project forked from kde/krita

1.0 1.0 0.0 551 MB

[WIP] OpenCL acceleration for Krita

License: GNU General Public License v3.0

CMake 1.37% C 1.95% Shell 0.11% Perl 0.06% C++ 92.24% MATLAB 0.01% Python 2.17% HTML 0.28% GLSL 0.04% Objective-C 0.04% QMake 0.01% Batchfile 0.15% Prolog 0.01% Scheme 0.02% QML 1.42% JavaScript 0.06% Objective-C++ 0.01% Makefile 0.01% NSIS 0.08%

krita-gpu's Introduction

Status

Build is ok; passed all existing tests. Tested on Nvidia GTX 1070 on Linux.

Performance is good (up to 27x speedup) on large tiles, but poor on small tiles.

Algorithms

  • [X] CompositeOpAlphaDarken32: implemented, performance: poor
  • [ ] CompositeOpAlphaDarken128
  • [ ] CompositeOpOver32
  • [ ] CompositeOpOver128

Current problems

Tile size is too small
Average working area of a composite function is 64x64 pixels (16KB), which means that runtime overhead of memory transfer b/w a host and a device is significant.
Need more testing
Unit tests for OpenCL components, more tests for composite ops.

Next steps

  • Optimize CompositeOpAlphaDarken32 for small tiles
    • [ ] Pre-allocate pinned memory
    • [ ] Allocate tiles in GPU memory and keep it consistent with CPU.
  • Run on Intel OpenCL for CPU and GPU.

krita-gpu's People

Contributors

hallarempt avatar dimula73 avatar kossebau avatar boemann avatar hambre avatar lukastvrdy avatar scottpetrovic avatar montel avatar therahedwig avatar staniek avatar ganeshp avatar sebsauer avatar ingwal avatar bcoppens avatar dfaure avatar miabrahams avatar plassy avatar alvinhochun avatar somsubhra avatar animtim avatar pinaraf avatar awhiemstra avatar mxj4 avatar petersimonsson avatar estan avatar gladhorn avatar leinir avatar mthaler avatar fyanardi avatar smjert avatar

Stargazers

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Watchers

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