2 Commits

Author	SHA1	Message	Date
Patrick Walton	6eb0232aad	Add `precision highp sampler2D` everywhere so our winding numbers don't get clipped ... Closes #280.	2020-03-27 14:53:00 -07:00
Patrick Walton	5421525eaa	Implement the HSL filters (called "non-separable blend modes" in the spec). ... These cannot be implemented with the standard OpenGL blending functions, so we have to do them manually in a shader, which requires a good deal of machinery to create intermediate framebuffers and so forth.	2020-02-24 15:37:44 -08:00