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digitalmars.D.learn - D, Game Development, GLSL, Math

reply Void-995 <void995 gmail.com> writes:
(Void-995) Hi, everyone. I'm pretty excited with what have D to 
offer for game development, especially meta programming, traits, 
object.factory, signals and bunch of other neat things that may 
save a lot of time. Also, i saw support for vector data types and 
simd, which sounds awesome. The question is, can i use simd as 
base to extend it's syntax for making something like GLM for C++? 
I mean extending existing types with new operators and such to 
have GLSL/HLSL like syntax for basis math operation in D? Maybe 
someone did that already?
Jul 01 2017
next sibling parent reply drug <drug2004 bk.ru> writes:
01.07.2017 22:07, Void-995 пишет:

 (Void-995) Hi, everyone. I'm pretty excited with what have D to offer 
 for game development, especially meta programming, traits, 
 object.factory, signals and bunch of other neat things that may save a 
 lot of time. Also, i saw support for vector data types and simd, which 
 sounds awesome. The question is, can i use simd as base to extend it's 
 syntax for making something like GLM for C++? I mean extending existing 
 types with new operators and such to have GLSL/HLSL like syntax for 
 basis math operation in D? Maybe someone did that already?


Look at gfm
https://code.dlang.org/packages/gfm
Jul 01 2017
parent reply Void-995 <void995 gmail.com> writes:
On Saturday, 1 July 2017 at 19:16:12 UTC, drug wrote:

 01.07.2017 22:07, Void-995 пишет:

 (Void-995) Hi, everyone. I'm pretty excited with what have D 
 to offer for game development, especially meta programming, 
 traits, object.factory, signals and bunch of other neat things 
 that may save a lot of time. Also, i saw support for vector 
 data types and simd, which sounds awesome. The question is, 
 can i use simd as base to extend it's syntax for making 
 something like GLM for C++? I mean extending existing types 
 with new operators and such to have GLSL/HLSL like syntax for 
 basis math operation in D? Maybe someone did that already?


 Look at gfm
 https://code.dlang.org/packages/gfm


Looking good, but I'm thinking more about 1:1 GLSL syntax (main 
reason - rapid prototype of GLSL/HLSL/OpenCL in D and code 
portability back and forward basing on usage) and heavy depending 
on SIMD. Just math and nothing else. Also may be a nice excersise 
for myself.
Jul 01 2017
next sibling parent Nicholas Wilson <iamthewilsonator hotmail.com> writes:
On Saturday, 1 July 2017 at 19:23:57 UTC, Void-995 wrote:

 On Saturday, 1 July 2017 at 19:16:12 UTC, drug wrote:

 01.07.2017 22:07, Void-995 пишет:

 (Void-995) Hi, everyone. I'm pretty excited with what have D 
 to offer for game development, especially meta programming, 
 traits, object.factory, signals and bunch of other neat 
 things that may save a lot of time. Also, i saw support for 
 vector data types and simd, which sounds awesome. The 
 question is, can i use simd as base to extend it's syntax for 
 making something like GLM for C++? I mean extending existing 
 types with new operators and such to have GLSL/HLSL like 
 syntax for basis math operation in D? Maybe someone did that 
 already?


 Look at gfm
 https://code.dlang.org/packages/gfm


 Looking good, but I'm thinking more about 1:1 GLSL syntax (main 
 reason - rapid prototype of GLSL/HLSL/OpenCL in D and code 
 portability back and forward basing on usage) and heavy 
 depending on SIMD. Just math and nothing else. Also may be a 
 nice excersise for myself.


"Changing the syntax" can be done (e.g. 
https://github.com/p0nce/intel-intrinsics)
You'll want to look at the operator overloading that can be done 
in D (spec https://dlang.org/spec/operatoroverloading.html)

As a side note: I'll soon be starting work on DCompute[1] again 
(Honours thesis due tomorrow), integrating John Colvin's CLWrap 
among many other things.

[1]https://github.com/libmir/dcompute
Jul 01 2017
prev sibling parent Guillaume Piolat <first.last gmail.com> writes:
On Saturday, 1 July 2017 at 19:23:57 UTC, Void-995 wrote:

 Looking good, but I'm thinking more about 1:1 GLSL syntax (main 
 reason - rapid prototype of GLSL/HLSL/OpenCL in D and code 
 portability back and forward basing on usage) and heavy 
 depending on SIMD. Just math and nothing else. Also may be a 
 nice excersise for myself.


You can just depend on the subpackage gfm:math.

Is 1:1 GLSL syntax that good? In GLSL:
- per-item max is just called "max" which clashes with Phobos. 
Most GLSL function names clash with Phobos which creates errors 
when both are imported.
- mat3x4 is a 3 column by 4 rows types, which is kind of a trap.
- vec4 does not say it's 4 floats whereas vec4f does
- "lerp" might be a better name than "mix"
- etc...
Jul 01 2017
prev sibling parent Guillaume Piolat <first.last gmail.com> writes:
On Saturday, 1 July 2017 at 19:07:48 UTC, Void-995 wrote:

 can i use simd as base to extend it's syntax for making 
 something like GLM for C++?


You can use simd to implement something like GLM, but extending 
the syntax of SIMD will prove more difficult.
vector types are a bit different in LDC and DMD, also DMD 32-bit 
won't support D_SIMD.

https://github.com/jkrempus/pfft is the only library I know that 
abstracts over the varied D SIMD capabilities, and possibly work 
with all compilers.
Jul 01 2017