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-rw-r--r--src/mesa/main/condrender.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mesa/main/condrender.c b/src/mesa/main/condrender.c
index 352e2e2b165..c8195a520cf 100644
--- a/src/mesa/main/condrender.c
+++ b/src/mesa/main/condrender.c
@@ -44,7 +44,8 @@ _mesa_BeginConditionalRender(GLuint queryId, GLenum mode)
struct gl_query_object *q;
GET_CURRENT_CONTEXT(ctx);
- if (!ctx->Extensions.NV_conditional_render || ctx->Query.CondRenderQuery) {
+ if (!ctx->Extensions.NV_conditional_render || ctx->Query.CondRenderQuery ||
+ queryId == 0) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glBeginConditionalRender()");
return;
}