From 3e48dd04456aaf2d42dfa7f3a3c99a95a5986eb6 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Tue, 16 Jun 2009 09:34:35 -0600 Subject: [PATCH] mesa: fix incorrect viewport clamping in _mesa_set_viewport() A 0 by 0 viewport size is legal. Don't clamp against lower bound of one. The error checking earlier in the function prevents negative values. --- src/mesa/main/viewport.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/mesa/main/viewport.c b/src/mesa/main/viewport.c index ead856d32c3..50e0402d278 100644 --- a/src/mesa/main/viewport.c +++ b/src/mesa/main/viewport.c @@ -73,8 +73,8 @@ _mesa_set_viewport(GLcontext *ctx, GLint x, GLint y, } /* clamp width and height to the implementation dependent range */ - width = CLAMP(width, 1, (GLsizei) ctx->Const.MaxViewportWidth); - height = CLAMP(height, 1, (GLsizei) ctx->Const.MaxViewportHeight); + width = MIN2(width, (GLsizei) ctx->Const.MaxViewportWidth); + height = MIN2(height, (GLsizei) ctx->Const.MaxViewportHeight); ctx->Viewport.X = x; ctx->Viewport.Width = width; -- 2.11.0