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public text v1 · immutable!!ARBfp1.0
TEMP tex,tex2,tcoord2,pix;
TEX tex, fragment.texcoord[0], texture[0], RECT;
ADD tcoord2, fragment.texcoord[0], {1.0, 1.0, 0.0, 0.0};
TEX tex2, tcoord2, texture[0], RECT;
SUB pix, tex, tex2;
MOV result.color, pix.rgba;
END