mesa: only verify that enabled arrays have backing buffers

[mesa.git] / src / mesa / main / lines.c

diff --git a/src/mesa/main/lines.c b/src/mesa/main/lines.c
index 0df9d66b056342ceb0e827ad6be5b476db1441db..93b80af0dc42d0343cfd69cb9893a1bec1e53672 100644 (file)
--- a/src/mesa/main/lines.c
+++ b/src/mesa/main/lines.c
@@ -45,7 +45,11 @@ _mesa_LineWidth( GLfloat width )
    if (MESA_VERBOSE & VERBOSE_API)
       _mesa_debug(ctx, "glLineWidth %f\n", width);
 
-   if (width<=0.0) {
+   /* If width is unchanged, there can't be an error */
+   if (ctx->Line.Width == width)
+      return;
+
+   if (width <= 0.0F) {
       _mesa_error( ctx, GL_INVALID_VALUE, "glLineWidth" );
       return;
    }
@@ -62,14 +66,12 @@ _mesa_LineWidth( GLfloat width )
     */
    if (ctx->API == API_OPENGL_CORE
        && ((ctx->Const.ContextFlags & GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT)
-           != 0)) {
+           != 0)
+       && width > 1.0F) {
       _mesa_error( ctx, GL_INVALID_VALUE, "glLineWidth" );
       return;
    }
 
-   if (ctx->Line.Width == width)
-      return;
-
    FLUSH_VERTICES(ctx, _NEW_LINE);
    ctx->Line.Width = width;