#version 450
#extension GL_ARB_separate_shader_objects : enable

layout(set = 0, binding = 0) uniform NodeData
{
	mat4 world;
} node;

layout(set = 1, binding = 0) uniform CameraData
{
	mat4 viewProjection;
} cam;

layout(set = 4, binding = 0) uniform LabelData
{
	vec4 color;
	vec2 textSize;
	vec2 bboxCenter;
	float radius;
	float arrowLength;
	float arrowWidth;
	bool hasRoundedCorners;
	bool hasArrow;
} labelInfo;

layout(location = 0) out vec4 color;
layout(location = 1) out vec2 textureCoordinates;

// Background plane positions are in clipped space
const vec4 PLANE[4] = vec4[](
        vec4(-0.5, -0.5, 0, 1), vec4(0.5, -0.5, 0, 1), vec4(-0.5, 0.5, 0, 1), vec4(0.5, 0.5, 0, 1)
    );

const vec2 TEX_COORDS[4] = vec2[](
        vec2(0, 0), vec2(1, 0), vec2(0, 1), vec2(1, 1)
    );

void main()
{
	vec4 position = PLANE[gl_VertexIndex];
	position.xy *= labelInfo.textSize;
	position.xy += labelInfo.bboxCenter;
	//position.z = -0.001;
	gl_Position = cam.viewProjection * node.world * position;
	textureCoordinates = TEX_COORDS[gl_VertexIndex] * labelInfo.textSize;
}