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Map Range: added the same infinity clamping for Z buffer as normalize node. 

Think should be pretty much harmless since if this node was used for buffers
with infinities it already showed artifacts. Now it should be more useful for
mapping Z buffers.
This commit is contained in:
Sergey Sharybin 2012-11-30 13:17:19 +00:00
parent 4f8f5746a8
commit 7fa7ce297e
1 changed files with 12 additions and 3 deletions
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15
source/blender/compositor/operations/COM_MapRangeOperation.cpp
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@ -43,6 +43,9 @@ void MapRangeOperation::initExecution()
this->m_destMaxOperation = this->getInputSocketReader(4);
}
/* The code below assumes all data is inside range +- this, and that input buffer is single channel */
#define BLENDER_ZMAX 10000.0f
void MapRangeOperation::executePixel(float output[4], float x, float y, PixelSampler sampler)
{
float inputs[8]; /* includes the 5 inputs + 3 pads */
@ -61,9 +64,15 @@ void MapRangeOperation::executePixel(float output[4], float x, float y, PixelSam
source_max = inputs[2];
dest_min = inputs[3];
dest_max = inputs[4];
value = (value - source_min) / (source_max - source_min);
value = dest_min + value * (dest_max - dest_min);
if (value >= -BLENDER_ZMAX && value <= BLENDER_ZMAX) {
value = (value - source_min) / (source_max - source_min);
value = dest_min + value * (dest_max - dest_min);
}
else if (value > BLENDER_ZMAX)
value = dest_max;
else
value = dest_min;
if (this->m_useClamp) {
if (dest_max > dest_min) {