OpenGL colors don't work.

[crazyfuturamanoob]

I want to use png as texture. And I want alpha values too.

I got a function to make a texture from a file. It is python, but pyOpenGL is probably same than OpenGL.


def texture_from_string(string, size, palette):
texture = GLuint()

width = size[0]
height = size[1]

data = string

glGenTextures(1, texture)

OpenGL.GL.glBindTexture(GL_TEXTURE_2D, texture)

# when texture area is small, bilinear filter the closest mipmap
glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_NEAREST )

# when texture area is large, bilinear filter the first mipmap
glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR )

# build our texture mipmaps
gluBuild2DMipmaps(GL_TEXTURE_2D, 3, width, height, palette, GL_UNSIGNED_BYTE, data)

# return texture for user
return texture

def texture_from_file(filename, size, palette=GL_RGBA):
file = open(filename, 'r')
string = file.read()
file.close()
return texture_from_string(string, size, palette)
But when I try to draw a textured quad, I can't see the texture. And when I use glColor4f, I get colors seriously messed up. Like if I draw a green dot, it might be yellow or something else!
So the problem is probably with GL_RGBA or whatever it is called. With different values, I get different results. But I want to see my texture! Help!