A simple example with matrices
https://pastebin.com/5S5Lf17E
George
ср, 2 июн. 2021 г. в 03:53, George Cherevichenko <
george.chereviche...@gmail.com>:
> A problem. In OpenGL3.0+ we have to sent a matrix to a shader
> float matrix[ ] = {any-16-elements-array};
> glUniformMatrix4fv(... , matrix);
> I try to do the same in Factor
> {any-16-elements-array} alien.c-types:float >c-array glUniformMatrix4fv
> and get an OpenGL error. Then I try
> {any-16-elements-array} alien.c-types:float >c-array >c-ptr
> glUniformMatrix4fv
> and get an OpenGL error too.
>
> George
>
>
> вт, 1 июн. 2021 г. в 23:21, George Cherevichenko <
> george.chereviche...@gmail.com>:
>
>> How to turn a Factor's 4X4 matrix to C array (I need a pointer float*) in
>> column-major order?
>> https://en.wikipedia.org/wiki/Row-_and_column-major_order
>> Thank you.
>>
>> George
>>
>> сб, 29 мая 2021 г. в 21:37, George Cherevichenko <
>> george.chereviche...@gmail.com>:
>>
>>> Simple examples without matrices.
>>> Triangle with glDrawArrays
>>> https://pastebin.com/QNgGuM2B
>>> Rectangle with glDrawElements
>>> https://pastebin.com/cxDvwyqj
>>>
>>> George
>>>
>>> сб, 29 мая 2021 г. в 02:56, <sf.alexi...@spamgourmet.com>:
>>>
>>>> "Generic word my-tuple-field<< does not define a method for the fixnum
>>>> class. Dispatching on object: 1"
>>>> What does it mean?
>>>>
>>>>
>>>> It means you called `1 obj >>my-tuple-field` instead of `obj 1
>>>> >>my-tuple-field`.
>>>>
>>>> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
>>>> On Saturday, May 29th, 2021 at 1:47 AM, George Cherevichenko -
>>>> george.chereviche...@gmail.com
>>>> <sf.alexilin.47a524cc51.george.cherevichenko#gmail....@ob.0sg.net>
>>>> wrote:
>>>>
>>>> "Generic word my-tuple-field<< does not define a method for the fixnum
>>>> class. Dispatching on object: 1"
>>>> What does it mean?
>>>> Now I can draw with glDrawArrays.
>>>>
>>>> George
>>>>
>>>> сб, 22 мая 2021 г. в 17:16, Ken Causey <klcau...@gmail.com>:
>>>>
>>>>> First I should be clear that I claim no special knowledge. I'm more
>>>>> of an interested observer and occasional dabbler with Factor.
>>>>>
>>>>> However, a quick grep turned up these areas that may help further at
>>>>> least in the form of example code:
>>>>>
>>>>> https://github.com/factor/factor/tree/master/basis/opengl
>>>>> https://github.com/factor/factor/tree/master/extra/bunny
>>>>> https://github.com/factor/factor/tree/master/extra/cuda
>>>>> https://github.com/factor/factor/tree/master/extra/gpu
>>>>> https://github.com/factor/factor/tree/master/extra/grid-meshes
>>>>> https://github.com/factor/factor/tree/master/extra/model-viewer
>>>>>
>>>>> On Sat, May 22, 2021 at 8:01 AM George Cherevichenko <
>>>>> george.chereviche...@gmail.com> wrote:
>>>>>
>>>>>> There are three lines of the code which I cannot write in Factor
>>>>>>
>>>>>> glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices,
>>>>>> GL_STATIC_DRAW);
>>>>>> glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat),
>>>>>> (GLvoid*)0);
>>>>>> glEnableVertexAttribArray(0);
>>>>>>
>>>>>> I wanted to use "with-gl-buffer" or "with-vertex-array" from Factor's
>>>>>> opengl vocabulary. Are there examples of using these commands?
>>>>>>
>>>>>> George
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> сб, 22 мая 2021 г. в 00:46, Doug Coleman <doug.cole...@gmail.com>:
>>>>>>
>>>>>>> It's just C ffi calls right?
>>>>>>>
>>>>>>> On Fri, May 21, 2021 at 4:38 PM George Cherevichenko <
>>>>>>> george.chereviche...@gmail.com> wrote:
>>>>>>>
>>>>>>>> It is VERY outdated. I need OpenGL3.0+
>>>>>>>>
>>>>>>>> https://learnopengl.com/code_viewer.php?code=getting-started/hellotriangle
>>>>>>>>
>>>>>>>> https://hsto.org/files/709/5ad/69c/7095ad69c2a5431083ec84dc25b35cdb.png
>>>>>>>>
>>>>>>>> George
>>>>>>>>
>>>>>>>> пт, 21 мая 2021 г. в 23:42, Ken Causey <klcau...@gmail.com>:
>>>>>>>>
>>>>>>>>> https://github.com/factor/factor/tree/master/extra/nehe
>>>>>>>>>
>>>>>>>>> On Fri, May 21, 2021 at 3:27 PM George Cherevichenko <
>>>>>>>>> george.chereviche...@gmail.com> wrote:
>>>>>>>>>
>>>>>>>>>> Is there an example? A rotating triangle would be enough.
>>>>>>>>>>
>>>>>>>>>> George
>>>>>>>>>> _______________________________________________
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>>>>>>>>>>
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