I may get it : passing the numpy.array to texture seems to work through :
c_float_p = POINTER(c_float)
my_texture = np.random.uniform(0,1,(512, 512)).astype(np.float32) #
generate random noise as test texture
my_texture_p = my_texture.ctypes.data_as(c_float_p)
my_texture_id = gl.GLuint() # generate 1 component texture (let's say ALPHA)
gl.glGenTextures(1, byref(my_texture_id))
gl.glEnable(gl.GL_TEXTURE_2D)
gl.glBindTexture(gl.GL_TEXTURE_2D, my_texture_id.value)
gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_ALPHA, 512, 512, 0,
gl.GL_ALPHA, gl.GL_FLOAT, my_texture_p)
seems to work. Needs more test, but it's late...
On Saturday, August 17, 2013 7:03:04 PM UTC+2, Fred wrote:
>
> In the previous code, there's an obvious error in the fragment shader (a
> 'vec4' is missing). Still not working though.
>
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