diff options
| -rw-r--r-- | src/mesa/main/buffers.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mesa/main/buffers.c b/src/mesa/main/buffers.c index 140cf6e82eb..8a0852c429c 100644 --- a/src/mesa/main/buffers.c +++ b/src/mesa/main/buffers.c @@ -498,7 +498,7 @@ _mesa_drawbuffers(struct gl_context *ctx, GLuint n, const GLenum *buffers, * (ex: glDrawBuffer(GL_FRONT_AND_BACK)). * Otherwise, destMask[x] can only have one bit set. */ - if (_mesa_bitcount(destMask[0]) > 1) { + if (n > 0 && _mesa_bitcount(destMask[0]) > 1) { GLuint count = 0, destMask0 = destMask[0]; while (destMask0) { GLint bufIndex = ffs(destMask0) - 1; |