37 lines
673 B
GLSL
37 lines
673 B
GLSL
[[vertex]]
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#define PI 3.1415926535897932384626433832795
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#define TWO_PI 6.283185307179586476925286766559
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uniform mat4 mvp;
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in vec4 pos;
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in vec2 uvs;
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out vec2 uv;
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void main()
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{
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uv = (vec2(1.0) - uvs + vec2(0.25,0.0)) * vec2(TWO_PI, PI);
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gl_Position = mvp * vec4(pos.xyz, 1.0);
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}
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[[fragment]]
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uniform samplerCube tex;
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in highp vec2 uv;
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out highp vec4 frag;
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void main()
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{
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highp float anglex = uv.x;
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highp float angley = uv.y;
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highp float sx = sin(anglex);
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highp float cx = cos(anglex);
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highp vec3 dir = vec3(0.0, 0.0, 0.0);
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dir.x = sin(angley) * cx;
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dir.y = cos(angley);
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dir.z = sin(angley) * sx;
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frag = texture(tex, dir);
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}
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