Blender Cycles texture paint tutorial - Skin Investigation

Blender Cycles texture paint tutorial

Tutorial: Blender: Dynamic Paint Guide


When added as a texture to the canvas object: you get paint colors.

Tutorial contents

"Resolution" defines outputted texture dimensions. For example using 256 will lead to 256x256 image output. Doubling the resolution will likely quadruple baking time and vice versa.

"Antialiasing" does smoothen paint edges using a 5x multisampling method. It will also slightly increase baking time.

"Substeps" are extra frames calculated between "real" frames. This helps getting a smooth paint flow on fast moving objects, but also directly multiplies baking time.

For example if you set one substep, Dynamic Paint will calculate one extra sample between each frame, calculating following frames : 1.0, 1.5, 2.0, 2.5 etc. But only saves whole frames.

Frame "Begin" and "End" values can be used to define baking start and end frames.

"Bake Dynamic Paint" starts the baking process. Canvas must be UV-unwrapped and scene must have at least one active paint object. You can see bake process at console window and on mouse cursor. Pressing ESC will stop the bake.

If you set wetmap to influence normal, specular and ray mirror, render should look something like this:Dynamic Paint system can output three different texture types: paint maps, wetmaps and displacement maps.

Paint map

Paint map is the "color texture". It shows paint color and alpha.

"Premultiply Alpha" makes color values to be multiplied by alpha while saving the texture. This is usually recommended to be turned on.

This video shows how paint map looks like:

Wetmap

Wetmap is a black-and-white texture that visualizes paint wetness. White being maximum wetness, black being completely dry. Paint dries within defined time period. Some "paint effects" affect wet paint only.

Basically wetmap equals to a paint map of white paint with fading enabled. It is a separate output because you usually want to use both paint map and wetmap simultaneously.

Wetmap + paint map texture renderThis video shows a wetmap:

If you use both paint map and wetmap, you can easily get a nice looking paint surface. You can also use any output texture as a mask for Blender's procedural textures etc. So keep playing with different combinations and you can get any kind of results.

Displacement map

Displacement map is a texture supposed to be used with "Displace" modifier or with texture displace. It is sort of depth map visualizing distance (or depth) of paint object intersection.

"Strength" value defines how deep intersection is considered as maximum displacement. Use same value on displace modifier strength or on texture displace "scale" value.

"Type" drop-box defines output texture type: "Displace" is the standard type used by Blender, it's directly compatible with Blender displace tools.

You can also choose output file format between PNG and OpenEXR. OpenEXR is a 32-bit per channel floating point texture, so displace result is likely be smoother when using it. You need, however, a build that supports OpenEXR.

This is an example of a dispalce texture:

These texture influence and displace map output settings were used in the previous render:

Please note that enabling more output types doesn't cause a noticeable increase in bake times. So there is no need to disable texture outputs in terms of saving in bake times.

First three sliders let you to define paint drying, fading and flattening behavior. "Time" value defines number of frames it takes to revert from maximum value to zero. "Slow" drying enables logarithmic drying. Basically it makes high wetness to dry faster than low wetness.

Supported surface texture mapping Surface texture influences that affect paint Volumetric texture influences that affect paint Paint with smoke


More about Blender Cycles texture paint tutorial

Transparent gif

by cdub

In photoshop, keep selecting all the background until you have all of you want to be transparent...Try deleting background and see if the underlying backgroundis already transparent. (If your final image is easy to select, select it directly.). If initially selecting the BACKGROUND, and you need to get a transparent bckgrnd, inverse the selection so the main subject is selected. You may already have a Transparent background (you'll see the checkerboard).
If you don't already have an underlying transparent background, Copy the selected imaged.
Open new file, with Transparent background

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