Interesting. It seem to be a lightbaking program that works with SketchUp.
I Google translated the pdf to english:
Speed-GI Baking Tools For SketchUp documentation v2009312
Chapter I Introduction
Speed-GI Baking Tools is a designer for the SketchUp tools for post-production, rendering, bakery, post,
Animation functions for the designer to provide a new tool for the design of the outcome of the performance. Real-time rendering with the effect of stage alternative
Map is the main objective of Baking Tools.
Chapter II Hardware Requirements
Speed-GI to the requirements of a certain graphics cards, although basically support the OpenGL graphics cards can run the program. However, strong
Strongly recommend the use of full support for OpenGL 2.0 graphics card for rendering, such as the Geforce FX 5xxx or ATI 9500 or above
Above. Speed-GI because a key part of the rendering function is totally dependent on the performance of graphics cards, better graphics cards can use large
Enhance the computing speed increases. Geforce 8600 have been tested more than twice as fast as Geforce 7300 or so.
Chapter III of the workflow
With the existing number of different renderer is rendering Speed-GI results are no longer
Is a picture, but can be dynamic roaming the virtual scene. Speed-GI
Can be automatically carried out on the scene bakery (Bake), rendering the results can be used to make
Real-time roaming. The following will be displayed every aspect of the workflow.
Step One; Model Import
Speed-GI install SketchUp will occur after the completion of a toolbar button,
Click this button to import the current scene in a Speed-GI.
Step two; Light map generation
Import model by pressing the "re-generated illumination map" for the entire model can generate a set of
Illumination map. Light is actually a texture map, the texture of the scene to preserve
Light information. Light map generation, all calculated in the light of this light Figure
Basis. Light map generation process is actually "Automatic Unwrap"
The process will be automatically flattening three-dimensional model to
By default, the system automatically based on numerical model to determine the needs of the total number of light
Fig. You can also of course a wealth of options for more adjustment.
Light map generation process will involve the parameters;
Illumination map the distribution of parameters;
Map the distribution of light the way; There are two modes of distribution, according to the maximum capacity of illumination map and by Patch Size. The former in order to "light leaflets
Fig capacity "as the standard distribution of illumination map, the latter to" Patch Size "as the standard distribution.
"The maximum capacity of illumination map" mode; The system model based on the total surface area of the current / light map to generate a total maximum capacity of decision
How many light map.
Simply put, to reduce "the maximum capacity of illumination map" can generate more illumination map, thus rendering the entire process more
Accuracy.
"By PatchSize" mode; PatchSize referring to an illumination map pixels (pixels) in the transition to three-dimensional space after
Model corresponds to the size of surface area. PatchSize * based on the square of light map resolution, the decision can be a light map
Enough surface area to accommodate much of the model.
Simply put, to reduce the "Patch Size" can generate more illumination map, rendering the whole process so that more refined
Degrees.
"Light map resolution"; we can improve the light map rendering resolution to increase accuracy, but this is not to improve the accuracy of
The best way. Because it is a single value, where adjustment resolution means a resolution of each map will be light to
High. And the vast majority of cases we have only one or a need to improve the accuracy of a few plans. At the same time, an increase of a precision, light
According to the original plan is four times the size (128 -> 256 -> 512), and very likely you can only hope that increased by 50% or even 30% accuracy.
Better approach is to
1. Generated using the default resolution light map (512), select the control in two ways in front of the total number of light Fig.
2. In the generation after the observation of the scene, looking for serious black or black block (these parts are often inadequate precision).
3. Click the left mouse button with the "black block", "current illumination map" will display.
At this time you can simply increase the resolution of a map, or not to increase the resolution to adjust the internal map
The proportion of sub-block; add "to select the scaling block" will allow selected blocks occupy more space. Adjustment of the end
After pressing the "update the distribution of the ratio of" will see the updated results.
Three steps above can help you get a higher light utilization and a more reasonable plan of distribution, such a result may
A faster calculation of the back of the end of the scene occupied less memory. However, if you bother to do these operations, it may only make
Step 1 with the overall control.
Illumination map adjustments;
In addition to map the distribution of illumination parameters, we also provide the "illumination map features," "small objects automatically enlarge," "anti-distortion", etc.
A series of parameters. By default, these parameters have a more reasonable value, if you're on the current distribution and
Not satisfied, try making some adjustments.
"Properties of light plan"; "light map space" refers to the generation of light maps in the interval between each block. This value is greater than 2
To avoid light shows when the "wrong." The value is too large will reduce the utilization of light Fig. "Illumination map fragmentation"
This value the greater the illumination map, the more the sub-block, when you find some illumination map graphics (such as the border) have had a hollow
When this value can improve the graphics of these empty "broken", so as to enhance the utilization, but also generate more broken
Broken blocks. The following chart;
Illumination map fragmentation = 0 illumination map fragmentation = 0.3
"Enlarge small objects" is used to automatically increase the number of small objects in the map occupied by the ratio of light to avoid because of the distribution of
Illumination map can not bring about the "black block" or "light block." If the literal meaning, "to determine the threshold value" determines the number of objects will be small since
Dynamic zoom, "zoom ratio" determines how much to enlarge.
"Anti-distortion" for the "deformities" object "non-geometric" scaling, in a certain direction (length or width) to increase light
The proportion of plans, for example, a very long, very small stick, we often need to let him change "width" in order to ensure that the illumination map
Have sufficient accuracy. "Threshold determination" smaller, there will be more objects is regarded as the "distortion" and "maximum intensity" more
Large, non-geometric scaling ratio will be greater, it will eventually block out the more "square."
Step III; Calculation of direct light
After the light map generation, we can calculate the direct illumination. This
Stage you need to complete; increase illumination light source and calculating the two-step process. While it is
To support the three main types of light sources, but regretted that the adjustment of light source also
Inconvenient. Parameters are the standard light source, where the list. The following
Introduces the parameters of the effectiveness of illumination calculation;
"Linear interpolation parameters"; In order to improve the speed, the system will not be calculated for each map
Pigment colors, similar colors near the circumstances, it will directly come to the final interpolation
Color. "Interpolation interval" General set to 4X4, "non-interpolation" mode will be mandatory
System to calculate each pixel. "Interpolation threshold," the bigger, there will be more pixels to be straight
Then calculated (slow, the effect of precision), on the contrary more pixels will be interpolated (block,
Details may be lost, the effect is more vague)
"Anti-aliasing parameters"; the opening of the calculation of direct illumination will be inserted prior to the completion of an "anti -
Sawtooth phase ", dedicated to dealing with the shadow of the edge of multi-sampling." Antialiasing threshold "is used to determine the edge, the greater value was
Judged to be less part of the edge, the faster rendering, but may miss the edge of the existence of a number of practical, resulting in zigzag. In contrast,
The better, slower speed.
Before and after anti-aliasing
"DI allows the smallest distance"; When the season points, or regional "black block", please increase this value.
Step four, global illumination calculation
With the basic results of the direct illumination, global illumination calculation will be able to enhance
Level effects.
The system currently provides two sets of global optical computing engine; photon mapping and
The ultimate collection.
Comparison here is the recommended workflow; First of all, photon mapping is calculated using a rough
The distribution of light, and then with a net effect of the final collection.
In addition, we also provide the calculation of shielding the environment, but because of the speed and effectiveness of
The relationship is not particularly recommended here.
The main parameters of photon mapping engine;
"Photon tracking parameters"; "the initial photon number," the decision engine to the scene by default
The number of photons launched. "Rebound in the number of"; photon emission into the scene after
Line reaction, this parameter determines the number of times up to rebound after the termination.
"Photon estimated parameters"; "the minimum photon number" used to avoid highlighting the "flare", the value is too small may cause severe "flare"
Phenomenon. And too large will result in very dark scenes.
"Maximum photon number," the decision is estimated that the accuracy of photon, the greater the effect of more accurate values. "Maximum estimated range"; decide how much
The framework of photon collection, the greater the results will be Numerical smoothing, on the contrary there will be spots and color.
It should be noted that the parameters here is only the default parameters, the photon map, photon is estimated that after the calculation, you can still
Calculation engine panel to adjust these values in a timely manner. You can even pause in the calculation process, adjusting the parameters and then continue. Photon
Mapping is completed, you can adjust the dynamic parameters of the estimated photon, and then click on the "fresh start at this stage," and this can be
Photon tracking in order to avoid duplication process.
The ultimate collection of the main parameters
After the photon map, we strongly recommend the use of the final collection. Note that the ultimate collection always based on the current scene.
The ultimate collection of photon mapping can greatly improve the effectiveness, of course, you can also end in the calculation of the direct light immediately after the final collection
Set, or even skip the calculation of direct illumination, direct access to the ultimate collection for the rendering of pure ambient light.
The ultimate collection of parameters; By default, if your "GPGPU accelerated" option is "not to use" state, then you
The card can not be the ultimate collection of computing hardware. We strongly recommend that you replace the card. Otherwise, the process of calculating the speed, accuracy
Will be affected, while in the calculation of the process will not be able to switch your window, or calculating the results would be completely incorrect.
"Sampling accuracy"; the use of GPGPU in support of the greatest accuracy is the best option, at this time does not reduce the accuracy of more
Good performance. However, do not support GPGPU, select 32, or else the speed will not tolerate.
"Sampling model"; "half-cube" model is "flat model" 5 times, but the former is the real party precise
Type. "Flat model" and often biased and can not bring the right energy distribution.
"GI minimum allowed distance"; When the season points, or regional "black block", please increase this value.
Parameters and the effectiveness of Chapter IV List
Map the distribution of light distribution patterns in two ways, according to the maximum capacity of light and according to plan
Patch Size. The former to "the capacity of leaflets illumination map" for the standard
Quasi-distribution of illumination map, the latter to "Patch Size" as the standard
Distribution.
Plans to reduce the maximum capacity of light, "the maximum capacity of illumination map" to generate more light
According to plan, thus rendering the whole process of making more refined
Degrees.
Patch size reduction "Patch Size" can generate more illumination map
Rendering the whole process so that greater accuracy.
Decision resolution light map rendering accuracy
Light map light map generation gap when the interval between each block, more than 2
To avoid light shows when the "wrong." Excessive
Value will reduce the utilization of light Fig.
Figure broken light illumination the greater value of the sub-block map, the more, when you found light
According to map some graphics (such as the border) have had a hollow
When this value can improve the graphics of these empty "broken",
So as to enhance the utilization, but also generate more broken
Broken blocks.
Small objects to determine the decision threshold of a number of small objects will be automatically enlarge
Enlarge the proportion of small objects to enlarge the proportion of small objects
Anti-distortion threshold to determine the value of the smaller, there will be more objects to be considered a "distortion"
The
Maximum intensity of anti-distortion, "the greatest strength of" the greater the proportion of non-geometric scaling will
The greater will eventually block out the more "square."
General interpolation interval is set to 4X4, "non-interpolation" mode will force the system
Calculated for each pixel
The greater the interpolation threshold, there will be more directly calculated pixels (slow effect
Fruit precise), on the contrary more pixels will be interpolated (block,
Details may be lost, the effect is more vague)
Antialiasing the edge of the threshold used to determine, was convicted of the greater value for the edge
Some of the less, the faster rendering, but may miss some
The edge of the actual existence, resulting in zigzag. In contrast, the results will be
Well, the slower the speed.
DI minimum distance allowed when there is dry or regional "black block", please increase
This value
The initial photon number of the decision engine to the scene to launch the default number of photon
Rebound in the number of photon emission to the scene after a rebound, the parameter
Decision up to the number of times a rebound after the termination of
Estimated parameters for the photon to avoid highlighting the "flare", the value is too small may have strict
Emphasis on the "flare" phenomenon. The scene would cause too much is
Black
The biggest decision of the photon number is estimated that the accuracy of photon, the greater the effect of more accurate numerical
The estimated range of the biggest decisions in the framework of how photon collection, the greater the effect value
More smooth fruit, on the contrary there will be spots and color
GPGPU accelerated by default, if your "GPGPU accelerated" option is
"Non-use" state, then the graphics that you can not enter
The ultimate collection of computing hardware line. We strongly recommend that you replace
Graphics. Otherwise, the speed of calculation, the accuracy will be
Impact in the calculation of the process at the same time you will not be able to switch window
Otherwise, results would be completely incorrect.
Sampling precision GPGPU use in support of the greatest accuracy is the best election
Optional, at this time to reduce the accuracy and can not bring about better performance.
However, do not support GPGPU, select 32, or
Unbearable speed.
Sampling mode "half cube" model is "flat model" 5
Times, but the former is the real way accurate. "Plane mode
Type "and often biased and can not bring the right energy distribution.
GI minimum distance allowed when there is dry or regional "black block", please increase
This value
The back of the end block to consider whether the collection of the back of the model, model, or the
Not correct the overall brightness may be trying to shut down the[/code]
