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, :
>>
>>> "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
>>>
>>> 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 :
>>>
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 :
>
>> 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 :
>>>
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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