1 files changed, 6 insertions, 2 deletions
diff --git a/indra/llrender/llrendertarget.cpp b/indra/llrender/llrendertarget.cpp
index 38bc5ff331..180b8677ee 100644
--- a/indra/llrender/llrendertarget.cpp
+++ b/indra/llrender/llrendertarget.cpp
@@ -429,7 +429,8 @@ void LLRenderTarget::bindTarget()
 
     if (mTex.empty())
     { //no color buffer to draw to
-        glDrawBuffer(GL_NONE);
+        GLenum buffers[] = {GL_NONE};
+        glDrawBuffers(0, buffers);
         glReadBuffer(GL_NONE);
     }
     else
@@ -499,7 +500,9 @@ void LLRenderTarget::bindTexture(U32 index, S32 channel, LLTexUnit::eTextureFilt
     {
         case GL_SRGB:
         case GL_SRGB8:
+#if GL_VERSION_2_1
         case GL_SRGB_ALPHA:
+#endif
         case GL_SRGB8_ALPHA8:
             isSRGB = true;
             break;
@@ -542,7 +545,8 @@ void LLRenderTarget::flush()
         sCurResX = gGLViewport[2];
         sCurResY = gGLViewport[3];
         glReadBuffer(GL_BACK);
-        glDrawBuffer(GL_BACK);
+        GLenum drawbuffers[] = {GL_BACK};
+        glDrawBuffers(1, drawbuffers);
     }
 }