Andro

Making steady progress with converting shadertoy examples into jit.gl.pix with codebox.

How to create the equivalent of a mat2, mat3, mat4 in codebox ?

The book of shaders has the following explanation: link -

http://thebookofshaders.com/glossary/?search=mat3

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mat3 aMat3 = mat3(1.0, 0.0, 0.0, // 1. column

mat3 dMat3 = mat3(aVec4, aVec3, bVec4, aFloat);

How would I go about implementing this in codebox ?

I'd like to keep everything on the GPU so I don't want to be creating small jit.matrix objects to send into the jit.gl.pix object.

Making steady progress with converting shadertoy examples into jit.gl.pix with codebox.
So heres the next thing I'm stuck on.
How to create the equivalent of a mat2, mat3, mat4 in codebox ?

The book of shaders has the following explanation: link -http://thebookofshaders.com/glossary/?search=mat3

--------------------------------------------------
Mat3

Declaration
mat3 aMat3 = mat3(1.0, 0.0, 0.0,  // 1. column
                                              0.0, 1.0, 0.0,  // 2. column
                                              0.0, 0.0, 1.0); // 3. column
mat3 bMat3 = mat3(1.0);

mat3 cMat3 = mat3(aVec3, bVec3, cVec3);
mat3 dMat3 = mat3(aVec4, aVec3, bVec4, aFloat);

How would I go about implementing this in codebox  ?
I'd like to keep everything on the GPU so I don't want to be creating small jit.matrix objects to send into the jit.gl.pix object.
Any pointers ?
Thanks !


how-to-create-and-use-a-mat2-mat3-mat4-in-codebox

Okay, so I got it working with a 2d rotation, The patch is below.

Do's anyone know any good references which can give clear code based examples for mat3 and mat4, I also see that a mat3 can be converted to a vec2 and so on.

Okay, so I got it working with a 2d rotation, The patch is below.
Do's anyone know any good references which can give clear code based examples for mat3 and mat4, I also see that a mat3 can be converted to a vec2 and so on.  

you should be able to perform mat3 math simply using 3 vec3's as storing each row of the matrix.

how to create and use a mat2 mat3 mat4 in codebox