Merge "Increase precision in rounded corner shader" into qt-dev

            float applyCornerRadius(vec2 cropCoords)

            {

                vec2 position = cropCoords - cropCenter;

                vec2 dist = abs(position) + vec2(cornerRadius) - cropCenter;

                // Increase precision here so that a large corner radius doesn't

                // cause floating point error

                highp vec2 dist = abs(position) + vec2(cornerRadius) - cropCenter;

                float plane = length(max(dist, vec2(0.0)));

                return 1.0 - clamp(plane - cornerRadius, 0.0, 1.0);

            }