#version 450
#extension GL_EXT_buffer_reference : require

struct TriangleVertex {
	vec4 vertex;
	vec4 color;
};

layout(buffer_reference, std430) readonly buffer TriangleVertexBuffer {
	TriangleVertex vertices[];
};

layout( push_constant ) uniform constants {
	TriangleVertexBuffer triangleBuffer;
	vec2 padding;
	vec4 data1;
	vec4 data2;
	vec4 data3;
} PushConstants;

layout (location = 0) out vec3 outColor;

void main()
{
	//const array of positions for the triangle
	const vec3 positions[3] = vec3[3](
		vec3(-1.f,1.f, 0.0f),
		vec3(1.f,1.f, 0.0f),
		vec3(0.f,-1.f, 0.0f)
	);

	//const array of colors for the triangle
	const vec3 colors[3] = vec3[3](
		vec3(1.0f, 0.0f, 0.0f), //red
		vec3(0.0f, 1.0f, 0.0f), //green
		vec3(00.f, 0.0f, 1.0f)  //blue
	);

	// Load vertex data from device address
	TriangleVertex v = PushConstants.triangleBuffer.vertices[gl_VertexIndex];

	// output the position of each vertex
	gl_Position = vec4(v.vertex.xyz, 1.0);
	outColor = vec3(v.color.xyz);
}