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#version 460 core
const float tau = 6.28318531;
layout(binding = 0) uniform sampler2DArray billboardDepth;
layout(binding = 1) uniform sampler2DArray billboardNormal;
layout(binding = 2) uniform sampler2DArray billboardAlbedo;
uniform mat4 viewProjection;
uniform float size;
include(`materialOut.glsl')
flat in ivec3 ModelPos;
flat in float Yaw;
flat in float Depth;
void
main()
{
int viewAngle = int(round(8 * Yaw / tau)) % 8;
vec3 texel = vec3(gl_PointCoord * vec2(-1, 1) + vec2(1, 0), viewAngle);
gAlbedoSpec = texture(billboardAlbedo, texel);
if (gAlbedoSpec.a < 0.5) {
discard;
}
gPosition = ivec4(ModelPos + vec3(0, 0, size * 2 * (1 - gl_PointCoord.y)), 1);
gNormal = texture(billboardNormal, texel) * vec4(-1, -1, 1, 1);
}
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