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-rw-r--r--indra/llrender/llvertexbuffer.cpp9
1 files changed, 8 insertions, 1 deletions
diff --git a/indra/llrender/llvertexbuffer.cpp b/indra/llrender/llvertexbuffer.cpp
index 1d257d8415..4460461e12 100644
--- a/indra/llrender/llvertexbuffer.cpp
+++ b/indra/llrender/llvertexbuffer.cpp
@@ -2360,7 +2360,8 @@ void LLVertexBuffer::setupVertexBuffer(U32 data_mask)
if (data_mask & MAP_COLOR)
{
S32 loc = TYPE_COLOR;
- void* ptr = (void*)(base + mOffsets[TYPE_COLOR]);
+ //bind emissive instead of color pointer if emissive is present
+ void* ptr = (data_mask & MAP_EMISSIVE) ? (void*)(base + mOffsets[TYPE_EMISSIVE]) : (void*)(base + mOffsets[TYPE_COLOR]);
glVertexAttribPointerARB(loc, 4, GL_UNSIGNED_BYTE, GL_TRUE, LLVertexBuffer::sTypeSize[TYPE_COLOR], ptr);
}
if (data_mask & MAP_EMISSIVE)
@@ -2368,6 +2369,12 @@ void LLVertexBuffer::setupVertexBuffer(U32 data_mask)
S32 loc = TYPE_EMISSIVE;
void* ptr = (void*)(base + mOffsets[TYPE_EMISSIVE]);
glVertexAttribPointerARB(loc, 4, GL_UNSIGNED_BYTE, GL_TRUE, LLVertexBuffer::sTypeSize[TYPE_EMISSIVE], ptr);
+
+ if (!(data_mask & MAP_COLOR))
+ { //map emissive to color channel when color is not also being bound to avoid unnecessary shader swaps
+ loc = TYPE_COLOR;
+ glVertexAttribPointerARB(loc, 4, GL_UNSIGNED_BYTE, GL_TRUE, LLVertexBuffer::sTypeSize[TYPE_EMISSIVE], ptr);
+ }
}
if (data_mask & MAP_WEIGHT)
{