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return {
definitions = {
Spring.GetConfigInt("HighResInfoTexture") and "#define HIGH_QUALITY" or "",
},
vertex = [[
#version 410 core
layout(location = 0) in vec3 aVertexPos;
layout(location = 1) in vec2 aTexCoords;
out vec2 vTexCoords;
void main() {
vTexCoords = aTexCoords;
gl_Position = vec4(aVertexPos, 1.0);
}
]],
fragment = [[
#version 410 core
#ifdef HIGH_QUALITY
#extension GL_ARB_texture_query_lod : enable
#endif
uniform float time;
uniform vec4 alwaysColor;
uniform vec4 losColor;
uniform vec4 radarColor;
uniform vec4 radarColor2;
uniform vec4 jamColor;
uniform sampler2D tex0;
uniform sampler2D tex1;
uniform sampler2D tex2;
in vec2 vTexCoords;
layout(location = 0) out vec4 fFragColor;
#ifdef HIGH_QUALITY
//! source: http://www.ozone3d.net/blogs/lab/20110427/glsl-random-generator/
float rand(const in vec2 n)
{
return fract(sin(dot(n, vec2(12.9898, 78.233))) * 43758.5453);
}
vec4 getTexel(in sampler2D tex, in vec2 p)
{
int lod = int(textureQueryLOD(tex, p).x);
vec2 texSize = vec2(textureSize(tex, lod));
vec2 off = vec2(time);
vec4 c = vec4(0.0);
for (int i = 0; i<4; i++) {
off = (vec2(rand(p.st + off.st), rand(p.ts - off.ts)) * 2.0 - 1.0) / texSize;
c += texture(tex, p + off);
}
c *= 0.25;
return smoothstep(0.5, 1.0, c);
}
#else
#define getTexel texture
#endif
void main() {
fFragColor = vec4(0.0);
// fFragColor = alwaysColor;
vec2 radarJammer = getTexel(tex2, vTexCoords).rg;
fFragColor += jamColor * radarJammer.g;
fFragColor += radarColor2 * step(0.8, radarJammer.r) * radarJammer.r;
fFragColor.rgb = fract(fFragColor.rgb);
float los = getTexel(tex0, vTexCoords).r;
float airlos = getTexel(tex1, vTexCoords).r;
fFragColor += losColor * ((los + airlos) * 0.5);
fFragColor += radarColor * step(0.2, fract(1 - radarJammer.r));
fFragColor += alwaysColor;
fFragColor.a = 0.05;
}
]],
uniformFloat = {
alwaysColor = select(1, Spring.GetLosViewColors()),
losColor = select(2, Spring.GetLosViewColors()),
radarColor = select(3, Spring.GetLosViewColors()),
jamColor = select(4, Spring.GetLosViewColors()),
radarColor2 = select(5, Spring.GetLosViewColors()),
},
uniformInt = {
tex0 = 0,
tex1 = 1,
tex2 = 2,
tex3 = 3,
},
textures = {
[0] = "$info:los",
[1] = "$info:airlos",
[2] = "$info:radar",
},
}
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