diff options
Diffstat (limited to 'indra/llimage')
| -rw-r--r-- | indra/llimage/llimage.cpp | 53 | ||||
| -rw-r--r-- | indra/llimage/llimage.h | 6 |
2 files changed, 59 insertions, 0 deletions
diff --git a/indra/llimage/llimage.cpp b/indra/llimage/llimage.cpp index a96b6601bd..acfc254b65 100644 --- a/indra/llimage/llimage.cpp +++ b/indra/llimage/llimage.cpp @@ -31,6 +31,7 @@ #include "llmath.h" #include "v4coloru.h" +#include "v3color.h" #include "llimagebmp.h" #include "llimagetga.h" @@ -1026,6 +1027,34 @@ bool LLImageRaw::optimizeAwayAlpha() return false; } +bool LLImageRaw::makeAlpha() +{ + if (getComponents() == 3) + { + U8* data = getData(); + U32 pixels = getWidth() * getHeight(); + + // alpha channel doesn't exist, make a new copy of data with alpha channel + U8* new_data = (U8*) ll_aligned_malloc_16(getWidth() * getHeight() * 4); + + for (U32 i = 0; i < pixels; ++i) + { + U32 di = i * 4; + U32 si = i * 3; + for (U32 j = 0; j < 3; ++j) + { + new_data[di+j] = data[si+j]; + } + } + + setDataAndSize(new_data, getWidth(), getHeight(), 3); + + return true; + } + + return false; +} + void LLImageRaw::expandToPowerOfTwo(S32 max_dim, bool scale_image) { // Find new sizes @@ -1268,6 +1297,30 @@ void LLImageRaw::fill( const LLColor4U& color ) } } +void LLImageRaw::tint( const LLColor3& color ) +{ + llassert( (3 == getComponents()) || (4 == getComponents()) ); + if (isBufferInvalid()) + { + LL_WARNS() << "Invalid image buffer" << LL_ENDL; + return; + } + + S32 pixels = getWidth() * getHeight(); + const S32 components = getComponents(); + U8* data = getData(); + for( S32 i = 0; i < pixels; i++ ) + { + const float c0 = data[0] * color.mV[0]; + const float c1 = data[1] * color.mV[1]; + const float c2 = data[2] * color.mV[2]; + data[0] = llclamp((U8)c0, 0, 255); + data[1] = llclamp((U8)c1, 0, 255); + data[2] = llclamp((U8)c2, 0, 255); + data += components; + } +} + LLPointer<LLImageRaw> LLImageRaw::duplicate() { if(getNumRefs() < 2) diff --git a/indra/llimage/llimage.h b/indra/llimage/llimage.h index 8f9e1b3c54..77b5f0b7bc 100644 --- a/indra/llimage/llimage.h +++ b/indra/llimage/llimage.h @@ -71,6 +71,7 @@ const S32 HTTP_PACKET_SIZE = 1496; class LLImageFormatted; class LLImageRaw; class LLColor4U; +class LLColor3; typedef enum e_image_codec { @@ -212,6 +213,8 @@ public: // if the alpha channel is all 100% opaque, delete it // returns true if alpha channel was deleted bool optimizeAwayAlpha(); + // Create an alpha channel if this image doesn't have one + bool makeAlpha(); static S32 biasedDimToPowerOfTwo(S32 curr_dim, S32 max_dim = MAX_IMAGE_SIZE); static S32 expandDimToPowerOfTwo(S32 curr_dim, S32 max_dim = MAX_IMAGE_SIZE); @@ -225,6 +228,9 @@ public: // Fill the buffer with a constant color void fill( const LLColor4U& color ); + // Multiply this raw image by the given color + void tint( const LLColor3& color ); + // Copy operations //duplicate this raw image if refCount > 1. |