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-rw-r--r--indra/llrender/llshadermgr.cpp7
1 files changed, 6 insertions, 1 deletions
diff --git a/indra/llrender/llshadermgr.cpp b/indra/llrender/llshadermgr.cpp
index bdc103b917..3910cd779c 100644
--- a/indra/llrender/llshadermgr.cpp
+++ b/indra/llrender/llshadermgr.cpp
@@ -524,7 +524,12 @@ GLhandleARB LLShaderMgr::loadShaderFile(const std::string& filename, S32 & shade
text[count++] = strdup("{\n");
- if (gGLManager.mGLVersion >= 3.f)
+ if (texture_index_channels == 1)
+ { //don't use flow control, that's silly
+ text[count++] = strdup("return texture2D(tex0, texcoord);\n");
+ text[count++] = strdup("}\n");
+ }
+ else if (gGLManager.mGLVersion >= 3.f)
{
text[count++] = strdup("\tswitch (int(vary_texture_index+0.25))\n");
text[count++] = strdup("\t{\n");