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View Full Version : GL_DOT_PRODUCT_TEXTURE_1D_NV texshader



davepermen
05-18-2001, 11:52 AM
its possible to do this:

tex0color = texel[ tex0coord ]
tex2color = texel[ tex1coord dot tex0color, tex2coord dot tex0color ]
tex3color = texel[ tex3coord ]

you loose there the tex1color..

done like this:

tex0: [ map: 2dtexture with normalmap coords: texcoords ]
tex1: [ map: nothing coords: point_to_light_vec ]
tex2: [ map: 2dtexture for lighing coords: halfangle ]
tex3: [ map: 2dtexture with colormap coords: texcoords ]

what i thought to do whas this:

tex0: [ map: 2dtexture with normalmap coords: texcoords ]
tex1: [ map: 1dtexture with specularexponent coords: halfangle ]
tex2: [ map: 2dtexture with color coords: texcoords ]
tex3: [ map: nothing coords: distance/radius ]

with a shader like that:
texture2d
dot_product_texture1d
texture2d
passthrought

oh, and color0 = point_to_light

like that i could have a nice specularexponent ( only possible with texshader so really high and nice looking ), diffusepart ( and the complete combination at all ) in the registercombiners ( there i know how to live, no problems there ) and the perpixelattentuation, too ( 1 - tex3^2 in the combiner )

but there is no GL_DOT_PRODUCT_TEXTURE_1D_NV, right? boring if so..