From 9bf9578c1b79e5622a2325f1a2bb80fcf0e22a6d Mon Sep 17 00:00:00 2001 From: =?utf8?q?Marek=20Ol=C5=A1=C3=A1k?= Date: Wed, 8 Jan 2014 01:23:43 +0100 Subject: [PATCH] mesa: handle GL_NONE draw buffers correctly in glClear Reviewed-by: Brian Paul --- src/mesa/main/clear.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) 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; + } } } -- 2.30.2