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Shader Experience : are you know this ?


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because a float has to have a .

On 1/13/2018 at 11:12 PM, NasimiAsl said:

about variable 

when you use variable in shader code you most careful when you wanna use it  in mathematical formula

float a = 10;

position.x = -a  // return "a" value in some of android system

position.x = -1.0*a  // correct usage

float a = 10.;
position.x = -a;

should validate

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  • 2 months later...

some time that not have same result when A and B type is diffrent

A * B and B * A

we always look like both is variable in code but for math this is important who most used first

for example world is a mat4 and pos is a vec3

(  world  *  vec4(pos,1.)  ).xyz  
(  vec4(pos,1.)  *  world  ).xyz
look line 61 and 62 and look left and right side of separator


*notice look on sphere's

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