1// license:BSD-3-Clause
2// copyright-holders:Ryan Holtz,ImJezze
3//============================================================
4//
5//  phosphor.json: Phosphor persistence shader for CRT
6//  simulation.
7//
8//============================================================
9{
10    "blend": {
11    	"equation": "add",
12    	"srcColor": "srcalpha",
13    	"dstColor": "1-srcalpha",
14    	"srcAlpha": "srcalpha",
15    	"dstAlpha": "1-srcalpha"
16    },
17    "depth": {
18    	"function": "always"
19    },
20    "cull": { "mode": "none" },
21    "write": {
22    	"rgb": true,
23    	"alpha": true
24    },
25    "vertex": "chains/hlsl/vs_phosphor",
26    "fragment": "chains/hlsl/fs_phosphor",
27    "uniforms": [
28    	{ "name": "s_tex",         "type": "int",  "values": [ 1.0 ] },
29    	{ "name": "s_prev",        "type": "int",  "values": [ 1.0 ] },
30    	{ "name": "u_passthrough", "type": "vec4", "values": [ 1.0, 0.0, 0.0, 0.0 ] },
31    	{ "name": "u_phosphor",    "type": "vec4", "values": [ 0.7, 0.7, 0.7, 0.0 ] }
32    ]
33}