diff options
Diffstat (limited to 'indra/llimage')
| -rw-r--r-- | indra/llimage/llimage.cpp | 23 | ||||
| -rw-r--r-- | indra/llimage/llimage.h | 5 |
2 files changed, 28 insertions, 0 deletions
diff --git a/indra/llimage/llimage.cpp b/indra/llimage/llimage.cpp index 916c346b7a..79949df2d0 100644 --- a/indra/llimage/llimage.cpp +++ b/indra/llimage/llimage.cpp @@ -673,6 +673,29 @@ void LLImageRaw::compositeUnscaled4onto3( LLImageRaw* src ) } } +void LLImageRaw::copyUnscaledAlphaMask( LLImageRaw* src, const LLColor4U& fill) +{ + LLImageRaw* dst = this; // Just for clarity. + + llassert( 1 == src->getComponents() ); + llassert( 4 == dst->getComponents() ); + llassert( (src->getWidth() == dst->getWidth()) && (src->getHeight() == dst->getHeight()) ); + + S32 pixels = getWidth() * getHeight(); + U8* src_data = src->getData(); + U8* dst_data = dst->getData(); + for ( S32 i = 0; i < pixels; i++ ) + { + dst_data[0] = fill.mV[0]; + dst_data[1] = fill.mV[1]; + dst_data[2] = fill.mV[2]; + dst_data[3] = src_data[0]; + src_data += 1; + dst_data += 4; + } +} + + // Fill the buffer with a constant color void LLImageRaw::fill( const LLColor4U& color ) { diff --git a/indra/llimage/llimage.h b/indra/llimage/llimage.h index 5f54585005..2d98f02aa6 100644 --- a/indra/llimage/llimage.h +++ b/indra/llimage/llimage.h @@ -230,6 +230,11 @@ public: // Src and dst are same size. Src has 3 components. Dst has 4 components. void copyUnscaled3onto4( LLImageRaw* src ); + // Src and dst are same size. Src has 1 component. Dst has 4 components. + // Alpha component is set to source alpha mask component. + // RGB components are set to fill color. + void copyUnscaledAlphaMask( LLImageRaw* src, const LLColor4U& fill); + // Src and dst can be any size. Src and dst have same number of components. void copyScaled( LLImageRaw* src ); |