Timeline for Problems with 3D Array for Voxel Data
Current License: CC BY-SA 3.0
13 events
| when toggle format | what | by | license | comment | |
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| Oct 25, 2013 at 21:11 | history | tweeted | twitter.com/#!/StackGameDev/status/393847299010723840 | ||
| Oct 25, 2013 at 21:01 | vote | accept | sm81095 | ||
| Oct 25, 2013 at 20:20 | answer | added | Sean Middleditch | timeline score: 3 | |
| Oct 25, 2013 at 20:15 | comment | added | Sean Middleditch |
@SeanM.: memcpy was not your problem. The prolem is that a std::vector maintains an internal size, and most implementations ensure that any index you access is at least that size. You'd want to do something like data.resize(width * height * depth) to get the right size and then memcpy, or use the std::copy algorithm, or use that with std::back_inserter if you don't wnat to resize first.
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| Oct 25, 2013 at 20:13 | comment | added | House | Please don't update the question with (SOLVED). If you have an answer to the question, it should be posted as an answer. | |
| Oct 25, 2013 at 20:13 | comment | added | Sean Middleditch | @NickWiggill: I didn't realize that was the answer; I stopped reading as soon as I got that far and was just giving what I thought was a tangential tip. :) | |
| Oct 25, 2013 at 20:12 | history | rollback | House |
Rollback to Revision 1
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| Oct 25, 2013 at 19:52 | history | edited | sm81095 | CC BY-SA 3.0 |
edited title
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| Oct 25, 2013 at 19:51 | comment | added | sm81095 |
I found that memcpy() is not the way to go when copying arrays of glm::vec3's, so I switched it to just copying the values over one index at a time. This seemed to fix the power-of-two rendering errors.
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| Oct 25, 2013 at 19:20 | comment | added | Engineer | @SeanMiddleditch You should really make that an answer. | |
| Oct 25, 2013 at 19:14 | comment | added | sm81095 |
@SeanMiddleditch, I changed the storage to a 1D array using the z * width * height + y * width + x code provided, initialized by uint16* _blockData = new uint16[REGION_DIM * REGION_DIM * REGION_DIM];. Now I am getting an error if the array doesn't contain at least one value that isn't 0 at the end of the Region constructor, where the array is being initialized. More specifically, this error.
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| Oct 25, 2013 at 17:38 | comment | added | Sean Middleditch |
Things like int*** are completely the wrong thing to use here. A "triple pointer" is not logically the same thing as a 3-dimensional array. You can just use a plain std::vector and claculate offsets manually with something like z * width * height + y * width + x (with the total size being width * height * depth of course).
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| Oct 25, 2013 at 17:03 | history | asked | sm81095 | CC BY-SA 3.0 |
