Texture Size confirmation

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Yan

I'm still not convinced about the minimum texture size in GL, so I'll move stuff from my previous post here..

As far as I can tell, Bmax makes no attempt at limiting the minimum texture size and GL seems to allow textures under 64x64...

Strict

SetGraphicsDriver GLMax2DDriver()

Graphics 800, 600, 0
SeedRnd MilliSecs()

Local pmap:TPixmap = CreatePixmap(16, 17, PF_RGBA8888)
For Local p=0 Until (pmap.capacity / 4)
	Int Ptr(pmap.pixels)[p] = $ff000000 | Rand($ffffff)
Next

Local image:TImage = LoadImage(pmap, 0)

Local width, height
glBindTexture(GL_TEXTURE_2D, TGLImageFrame(image.Frame(0)).name)
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, Varptr(width))
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, Varptr(height))

Local scl = 10

Cls
DrawText "Image size   = " + image.width + " x " + image.height, 12, 12
DrawText "Texture size = " + width + " x " + height, 12, 24

SetScale scl, scl
DrawImage image, 24, 48

DrawLine 24, 48, 24 + width, 48, False
DrawLine 24 + (width * scl), 48, 24 + (width * scl), 48 + height
DrawLine 24, 48 + (height * scl), 24 + width, 48 + (height * scl),False
DrawLine 24, 48, 24, 48 + height, False  

Flip

WaitKey()

End

...GL appears to create a 16x32 texture and even returns those figures as the texture size (unless I've misunderstood what glGetTexLevelParameteriv() does?).

??