i915: Adjust line size limits

The hardware can draw lines 0.5 to 7.5 pixels wide. Adjust the limits
to 1.0-7.0. The old limits seems to be from the era when i915 and i965
were sharing this code.

Not really sure if 1.0-7.0 is correct. Maybe it could be 0.5.7.5 as
those are the hw limits, or maybe some combination of the two?

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

diff --git a/src/mesa/drivers/dri/i915/intel_context.c b/src/mesa/drivers/dri/i915/intel_context.c
index c780103..6c737ea 100644 (file)
--- a/src/mesa/drivers/dri/i915/intel_context.c
+++ b/src/mesa/drivers/dri/i915/intel_context.c
@@ -474,8 +474,8 @@ intelInitContext(struct intel_context *intel,
 
    ctx->Const.MinLineWidth = 1.0;
    ctx->Const.MinLineWidthAA = 1.0;
-   ctx->Const.MaxLineWidth = 5.0;
-   ctx->Const.MaxLineWidthAA = 5.0;
+   ctx->Const.MaxLineWidth = 7.0;
+   ctx->Const.MaxLineWidthAA = 7.0;
    ctx->Const.LineWidthGranularity = 0.5;
 
    ctx->Const.MinPointSize = 1.0;