I am going to use a deep blue or purple coloured marble effect for the columns of my environment. these will naturally have to have a high specularity level, to show the effect of being a polished marble column. I will add in an illumination map to the marble veins, to give it the effect of being slightly magical. one way i could go about this is by desaturing the diffuse map with the veins in the marble, and increasing the brightness/contrast to achieve a grayscale map of the veins which i can use for the illumination map. i can then also change the hue and saturation of the image if i want to use an illumination colour map to alter the colour the veins emit is different, which would further increase the unnatural look of the columns. for creating the veins, i could use a mixture of black and white clouds and difference clouds, and then i could alter the levels to increase the contrast between the lines that difference clouds will leave, without it becoming too sharp around the edges.
Originally, i had intended to texture the columns with a stone texture, something similar to that of a mid tone, gray granite, however because the columns were to be closer towards the center of the environment, and as such would be focused on more, i wanted them to be more imposing. I still like the idea of the granite textures though, and instead i want to use them on the walls of the environment, which is one area i was struggling to generate ideas for that made them unique to the rest of the environment. using granite on the walls will also be a boon, as it allows for room to add more detail to the environment, such as water erosion or moss growing in the corners of the environment. i can also combine some of the detail with normal maps to give the effect of scratches and cracks in the granite slabs. there could also be ruts within the walls where the granite has been carved out in large rectangular slabs.
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