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Diffstat (limited to 'drivers/gles3/shaders/canvas.glsl')
| -rw-r--r-- | drivers/gles3/shaders/canvas.glsl | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gles3/shaders/canvas.glsl b/drivers/gles3/shaders/canvas.glsl index 9a90f33674..8c53ab6529 100644 --- a/drivers/gles3/shaders/canvas.glsl +++ b/drivers/gles3/shaders/canvas.glsl @@ -579,6 +579,12 @@ void main() { if (normal_used || (using_light && bool(read_draw_data_flags & FLAGS_DEFAULT_NORMAL_MAP_USED))) { normal.xy = texture(normal_texture, uv).xy * vec2(2.0, -2.0) - vec2(1.0, -1.0); + if (bool(read_draw_data_flags & FLAGS_FLIP_H)) { + normal.x = -normal.x; + } + if (bool(read_draw_data_flags & FLAGS_FLIP_V)) { + normal.y = -normal.y; + } normal.z = sqrt(1.0 - dot(normal.xy, normal.xy)); normal_used = true; } else { |