20 lines
515 B
GLSL
20 lines
515 B
GLSL
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#version 450
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layout (binding = 1) uniform sampler2DArray samplerView;
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layout (location = 0) in vec2 inUV;
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layout (location = 0) out vec4 outColor;
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layout (constant_id = 0) const float VIEW_LAYER = 0.0f;
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void main()
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{
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const float alpha = 0.2;
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vec2 p1 = vec2(2.0 * inUV - 1.0);
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vec2 p2 = p1 / (1.0 - alpha * length(p1));
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p2 = (p2 + 1.0) * 0.5;
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bool inside = ((p2.x >= 0.0) && (p2.x <= 1.0) && (p2.y >= 0.0 ) && (p2.y <= 1.0));
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outColor = inside ? texture(samplerView, vec3(p2, VIEW_LAYER)) : vec4(0.0);
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}
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