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Line 24: − + − * ADDSQRT2: sqrt(U’’*U’’+V’’*V’’) (?) − * U’’: U’’ (discards V’’) − * V’’: V’’ (discards U’’) − * MIN: min(U’’,V’’) − * MAX: max(U’’,V’’) − * ADD: U’’+V’’ Line 38:
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GPU/Procedural Texture Generation (edit)
Revision as of 08:23, 5 December 2015
, 08:23, 5 December 2015no edit summary
* Frequency
* Frequency
* Phase
* Phase
These parameters are configured starting [[GPU/Internal_Registers#GPUREG_TEXUNIT3_PROCTEX1|here]].
== Repeat Module ==
== Repeat Module ==
== Base Shape ==
== Base Shape ==
The U’’ and V’’ coordinates are used to generate a scalar value in the range [0;1] from the wrapped coordinates using one of six functions:
The U’’ and V’’ coordinates are used to generate a scalar value in the range [0;1] from the wrapped coordinates using one of six functions documented [[GPU/Internal_Registers#GPUREG_TEXUNIT3_PROCTEX0|here]].
The output of this function is named "g".
The output of this function is named "g".
* a triangle function
* a triangle function
The final texel color is determined by using the value of F(g) as an index into a configurable lookup table (which is presumed to span 3 kilobytes of data).
The final texel color is determined by using the value of F(g) as an index into a configurable [[GPU/Internal_Registers#GPUREG_PROCTEX_LUT|lookup table]].