// MinecraftPT — Entities Fragment Shader
// Handles entities (players, mobs), hands are in Hand_FS

#include "/Lib/Settings.glsl"
#include "/Lib/Utilities.glsl"

in vec2 texcoord;
in vec3 worldPos;
in vec3 worldNormal;
in vec3 vertexNormal;
in vec4 color;
in vec2 lightmap;
flat in int blockId;
flat in float blockLightLevel;

layout(location = 0) out vec4 colortex0Out;
layout(location = 1) out vec4 colortex1Out;
layout(location = 2) out vec4 colortex2Out;
layout(location = 3) out vec4 colortex3Out;
layout(location = 4) out vec4 colortex4Out;
layout(location = 5) out vec4 colortex5Out;

uniform bool isPlayer;

void main(){
	vec4 albedo = texture(tex, texcoord) * color;

	if (albedo.a < 0.004) discard;

	// Entity material ID — default entity
	float matID = 6.0; // MATID_ENTITIES

	// Player special handling (OptiFine provides isPlayer uniform in entities pass)
	if (isPlayer){
		matID = 7.0; // MATID_ENTITIES_PLAYER
	}

	vec4 specTex = vec4(0.0);
	#ifdef TEXTURE_PBR_FORMAT
		if (TEXTURE_PBR_FORMAT >= 1){
			specTex = texture(atlasSpecular2D, texcoord);
		}
	#endif

	vec2 lm = lightmap;
	lm.y = SkyLightmapCurve(lightmap.y);

	float emissive = 0.0;
	#ifdef VANILLA_EMISSIVE
		emissive = step(13.5, blockLightLevel) * blockLightLevel / 15.0;
	#endif

	colortex0Out = vec4(albedo.rgb, emissive);
	colortex1Out = vec4(EncodeNormal(worldNormal), EncodeNormal(vertexNormal));
	colortex2Out = vec4(specTex.r, specTex.g, specTex.b, matID / 255.0);
	colortex3Out = vec4(lm, 1.0, 1.0);

	colortex4Out = vec4(0.0);
	colortex5Out = vec4(0.0);
}