Enable – Enables the GPU shading preview in the viewport.
Light Inclination – The GPU Preview is lit by one single directional light. This angle means the height of the directional light above the horizon. 0 degrees places the light right above the container. 90 degrees places the light to the side.
Light Azimuth – The GPU Preview is lit by one single directional light. This angle rotates the light horizontally around the container and it can go from 0 to 360 degrees.
Simple Smoke Opacity –This value is used as opacity multiplier - the higher it is, the denser the smoke will look.
Smoke Constant Color – This color is used for shading of the smoke with the GPU Preview.
Gamma – Specifies the gamma for the GPU Preview.
Step Size as % of Cell Size – Specifies the ray marching step as a percentage of the cell size. As the GPU Preview traces rays through the simulator, this value controls how often to get information from the grid. If the this value is more than 100, some cells will start getting skipped and artifacts may appear.
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Mesh Preview
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Show Mesh – Turns the mesh preview on or off.
Mesh Color – Allows you to change the color of the mesh.
Surface Channel– Specifies the channel that will define the surface of the generated mesh.
Liquid/Temperature - the Liquid/Temperature channel will define the liquid surface. Temperature is typically in the range 0-1 for Liquid simulations and 600-2000 for Fire / Smoke simulations. Smoke - the Smoke channel will define the liquid surface. Smoke is typically in the range of 0-1 for Fire / Smoke simulations. Speed - the Speed channel will define the liquid surface. Speed channel output has to be enabled for this to work. Speed is calculated as the length of the velocity vector for each voxel. Fuel - the Fuel channel will define the liquid surface. Fuel channel output has to be enabled for this to work. Viscosity - the Viscosity channel will define the liquid surface. Viscosity channel output has to be enabled for this to work.
Isosurface Level – Allows you to specify a threshold value for the generation of the geometry surface. Grid cells below this value will be ignored.
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Image Added
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Save Images
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Browse – Opens a browser window to specify the directory and the name template for the output preview image files.
Reset Path– Resets the path to the same directory as the loaded cache files.
Image Width– Specifies the image width.
Image Height– Specifies the image height.
Aspect Ratio– Describes the proportions of the saved image, expressed as the ratio of width to height. It is irrespective of the viewport's resolution.
Lock Aspect Ratio– When enabled, the Aspect Ratio can't be changed.
Sequence Start– Specifies the first frame that will be used for saving an image.
Sequence End– Specifies the last frame that will be used for saving an image.
Save Sequence – Saves an image preview for the range of the entire cached sequence.
Stop– Stops the saving process.
Save Current Frame – Saves an image preview of the currently loaded frame.
