Preset (CineRender Global Illumination)

Presets are available for the optional Global Illumination effect, in the Detailed view of PhotoRendering Settings for the CineRender engine.

https://helpcenter.graphisoft.com/wp-content/uploads/archicad-23-reference-guide/132_cinerenderdetailed/GIPresetRev.png 

Since there are so many possible combinations of GI methods, this Preset option lets you save GI settings for specific types of Projects and Scenes.

It’s important to know how your Scene is set up. You should differentiate between two main types:

Interior spaces are mostly illuminated by fewer, smaller light sources: light that falls through windows, and lamps that emit light within a limited radius. Interior spaces are therefore more difficult to calculate for GI.

Exterior spaces are basically set up under an open sky. Skies emit light evenly from a large surface, which makes it easier for GI to calculate exterior scenes.

These presets should only serve as a starting point. These settings can then be fine-tuned to optimize render quality or render time.

List of Interior Presets

Custom: As soon as you modify a GI setting, this option will be activated.

Interior - Preview: Uses Irradiance Cache + Radiosity Maps. A fast preview with reduced Diffuse Depth.

Interior - Preview (High Diffuse Depth): Uses Irradiance Cache + Light Mapping

Interior - Preview (Small Illuminants): Uses Irradiance Cache + Light Mapping

Interior - High: Uses Irradiance Cache + Irradiance Cache

Interior - High (High Diffuse Depth): Uses Irradiance Cache + Light Mapping

Interior - High (Small Illuminants): Uses Irradiance Cache + Light Mapping

Notes on Interior Presets

Preview: These have reduced values, which can be calculated quickly and are well-suited for test renderings.

High: Designed for higher quality renderings. However, it may be necessary to increase or decrease individual values to achieve the desired render speed/quality.

High Diffuse Depth: Refers to the effects of numerous light reflections, which produce a much more realistic result with endlessly higher “sample depth”. Projects will tend to be rendered brighter; dark corners will also be brightened. This effect is created in conjunction with Light Mapping

Small Illuminants: Illumination will mainly be created by smaller lights that are defined as  Portals and Polygon Lights. IR+Light Mapping in combination with Force Per-Pixel is the best method of ensuring that small lights unfold their full potential.

List of Exterior Presets

Exterior - Preview: Uses Irradiance Cache + Radiosity Maps. A fast preview with reduced Diffuse Depth.

Exterior - Physical Sky: Uses Irradiance Cache + QMC.

Exterior - HDR Image: Uses Irradiance Cache + QMC.

Notes on Exterior Presets

Preview: These have reduced values, which can be calculated quickly and are well-suited for test renderings.

The difference between Physical Sky and HDR Image: Force Per-Pixel is enabled for the latter. An HDR image assigned to a Sky object is evaluated precisely for rendering, which will more precisely render multiple shadows - if they are present in the HDR image (note that the Diffuse Depth value may have to be increased).

Object Visualization

Object Visualizations are well-lit and are most often centered in the composition, which means that they generally require few light reflections.

Object Visualization - Preview: Uses Irradiance Cache + Light Mapping

Object Visualization - High: Uses Irradiance Cache + Irradiance Cache.

Physical Renderer’s Progressive Sampler

Progressive - No Prepass: Uses QMC + QMC.

Progressive - Fast Complete Diffuse: Uses QMC + Light Mapping

These two options are designed for use with the Physical Renderer’s Progressive Sampler setting. You can quickly render rough images whose quality improves progressively and lets you check the overall render quality without long waiting periods until the image is completely rendered.

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