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Flash's file format is fine w.r.t. compression. (It's beastly to parse, but that's a consequence of history.) It does a terrible job of rendering graphics thou

Flash's file format is fine w.r.t. compression. (It's beastly to parse, but that's a consequence of history.) It does a terrible job of rendering graphics though (probably because the guys who wrote the lowest level parts of the engine did so a long time ago and have moved on). When Steve Jobs wrote his letter about Flash a big part of the deal was Flash's impact on battery life because it was so inefficient -- and Adobe struggled to fix this for years and then gave up. I remember back when some Adobe blogger published a comparison of Flash to canvas animations showing Flash to be significantly faster. I, and several others, posted trivially optimized versions of the canvas code that crushed Flash like a bug, and this was Flash at the end of a long period of optimization where it carefully draws only the regions of the screen that changed, versus a pretty naive canvas implementation pretty much double-buffering its animation. http://loewald.com/blog/?p=3362 http://loewald.com/blog/?p=3362

Smily 13y ago
A single bouncing circle on a rectangle doesn't count as a benchmark in my opinion. Flash can be written in a performant manner, it used to be faster than HTML for almost everything, but that gap has narrowed for some specific things. Most of all though, in my experience, Flash is usually more consistent across browsers and operating systems. Even if it's slower than the fastest browser, it's at least consistently slower. When dealing with the desktop and/or applications on mobile devices that support AIR (i.e. supported runtimes), graphics rendering isn't an issue anymore. If you are really stuck with poor graphics performance using the traditional methods, you can just leverage Stage3D, which is just like WebGL, except it has a compatibility layer and is constrained in some ways, which can potentially make it more compatible with different underlying architectures and across more GPUs. Going back to benchmarks though, I believe that 95% (pulled out of my behindus) of benchmarks have poorly written code / code that could be optimized to run an order of magnitude faster, so I won't engage in a benchmark fling-fest. I can at least link a few minor tests I made a while ago where I encountered the above mentioned inconsistency issues: https://docs.google.com/spreadsheet/ccc?key=0Av4YDog3VfA-dHI5VVFuYVVqb0Nqb0MzdHNMRUViSFE&usp=sharing https://docs.google.com/spreadsheet/ccc?key=0Av4YDog3VfA-dHI...
- Tloewald 13y ago
  My favorite example of a Flash website was Adobe's store, which was 100% Flash for quite some time and virtually unusable (in different ways!) on every platform.

Smily 13y ago

A single bouncing circle on a rectangle doesn't count as a benchmark in my opinion. Flash can be written in a performant manner, it used to be faster than HTML for almost everything, but that gap has narrowed for some specific things. Most of all though, in my experience, Flash is usually more consistent across browsers and operating systems. Even if it's slower than the fastest browser, it's at least consistently slower. When dealing with the desktop and/or applications on mobile devices that support AIR (i.e. supported runtimes), graphics rendering isn't an issue anymore. If you are really stuck with poor graphics performance using the traditional methods, you can just leverage Stage3D, which is just like WebGL, except it has a compatibility layer and is constrained in some ways, which can potentially make it more compatible with different underlying architectures and across more GPUs. Going back to benchmarks though, I believe that 95% (pulled out of my behindus) of benchmarks have poorly written code / code that could be optimized to run an order of magnitude faster, so I won't engage in a benchmark fling-fest. I can at least link a few minor tests I made a while ago where I encountered the above mentioned inconsistency issues: https://docs.google.com/spreadsheet/ccc?key=0Av4YDog3VfA-dHI5VVFuYVVqb0Nqb0MzdHNMRUViSFE&usp=sharing https://docs.google.com/spreadsheet/ccc?key=0Av4YDog3VfA-dHI...

Tloewald 13y ago
My favorite example of a Flash website was Adobe's store, which was 100% Flash for quite some time and virtually unusable (in different ways!) on every platform.