Why `UniformMatrix3fv` accepts only a *float32?

[inkeliz]

First, I don't understand OpenGL to much, I'm learning about it.

There's a function UniformMatrix3fv:

func UniformMatrix3fv(location int32, count int32, transpose bool, value *float32) {
    C.glowUniformMatrix3fv(gpUniformMatrix3fv, (C.GLint)(location), (C.GLsizei)(count), (C.GLboolean)(boolToInt(transpose)), (*C.GLfloat)(unsafe.Pointer(value)))
}

However, that function is supposed to accept a array, as a value of value, as described here. I think there's no diference between WebGL and OpenGL.

---

But the current UniformMatrix3fv accepts *float32, not a []float32. What value is supposed to supply? If I use &myarray[0] is enough?

[jeff-emanuel]

Yes, pass &myarray[0]. OpenGL is not WebGL. See https://www.khronos.org/registry/OpenGL-Refpages/gl4/html/glUniform.xhtml instead.

On Mon, Jan 6, 2020 at 6:58 AM Inkeliz notifications@github.com wrote:

First, I don't understand OpenGL to much, I'm learning about it.

There's a function UniformMatrix3fv:

func UniformMatrix3fv(location int32, count int32, transpose bool, value float32) { C.glowUniformMatrix3fv(gpUniformMatrix3fv, (C.GLint)(location), (C.GLsizei)(count), (C.GLboolean)(boolToInt(transpose)), (C.GLfloat)(unsafe.Pointer(value))) }

However, that function is supposed to accept a array, as a value of value, as described here https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/uniformMatrix. I think there's no diference between WebGL and OpenGL.

But the current UniformMatrix3fv accepts *float32, not a []float32. What value is supposed to supply? If I use &myarray[0] is enough?

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