diff options
| -rw-r--r-- | src/mesa/main/clear.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/mesa/main/clear.c b/src/mesa/main/clear.c index f0b525fa017..fd5bb35b957 100644 --- a/src/mesa/main/clear.c +++ b/src/mesa/main/clear.c @@ -179,7 +179,11 @@ _mesa_Clear( GLbitfield mask ) if (mask & GL_COLOR_BUFFER_BIT) { GLuint i; for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++) { - bufferMask |= (1 << ctx->DrawBuffer->_ColorDrawBufferIndexes[i]); + GLint buf = ctx->DrawBuffer->_ColorDrawBufferIndexes[i]; + + if (buf >= 0) { + bufferMask |= 1 << buf; + } } } |