From f87993e0748f711b0b2439fe6ab4945bddad25c0 Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Sat, 24 Apr 2021 14:54:49 +0300
Subject: [PATCH] Remove the deprecated singlepass shader

It's become broken to the extent that it isn't worth fixing.
---
 shaderlib/singlepass.glsl | 170 --------------------------------------
 1 file changed, 170 deletions(-)
 delete mode 100644 shaderlib/singlepass.glsl

diff --git a/shaderlib/singlepass.glsl b/shaderlib/singlepass.glsl
deleted file mode 100644
index eef6a532..00000000
--- a/shaderlib/singlepass.glsl
+++ /dev/null
@@ -1,170 +0,0 @@
-// Deprecated; use phong.glsl instead.
-import msp_interface;
-
-const bool use_vertex_color = false;
-
-const bool use_lighting = false;
-const bool use_specular = false;
-const bool use_sky = false;
-const bool use_fog = false;
-
-const bool use_diffuse_map = false;
-const bool use_normal_map = false;
-
-const bool use_shadow_map = false;
-
-const bool use_environment_map = false;
-
-#pragma MSP stage(vertex)
-vec4 get_vertex_position()
-{
-	return vertex;
-}
-
-vec3 get_vertex_normal()
-{
-	return normal;
-}
-
-void singlepass_transform_and_lighting()
-{
-	out vec4 eye_vertex = eye_obj_matrix*get_vertex_position();
-	gl_Position = projection_matrix*eye_vertex;
-
-	out vec3 eye_normal = eye_obj_normal_matrix*get_vertex_normal();
-	vec3 eye_tangent = eye_obj_normal_matrix*tangent;
-	vec3 eye_binormal = eye_obj_normal_matrix*binormal;
-	out mat3 eye_tbn_matrix = mat3(eye_tangent, eye_binormal, eye_normal);
-
-	out vec3 incident_dir = normalize(eye_vertex.xyz);
-	if(use_normal_map)
-		incident_dir = incident_dir*eye_tbn_matrix;
-
-	vec3 ldir = normalize(light_sources[0].position.xyz-eye_vertex.xyz*light_sources[0].position.w);
-	if(use_normal_map)
-		ldir = ldir*eye_tbn_matrix;
-	out vec3 light_dir = ldir;
-
-	out vec3 tbn_zenith_dir = eye_zenith_dir*eye_tbn_matrix;
-	out vec3 shadow_coord = (shd_eye_matrix*eye_vertex).xyz;
-	out float fog_coord = eye_vertex.z;
-
-	for(int i=0; i<max_clip_planes; ++i)
-		gl_ClipDistance[i] = dot(eye_vertex, clip_planes[i].equation);
-}
-
-void main()
-{
-	singlepass_transform_and_lighting();
-	passthrough;
-}
-
-#pragma MSP stage(fragment)
-vec4 get_diffuse_sample()
-{
-	return texture(diffuse_map, texcoord.xy);
-}
-
-vec3 get_normal_sample()
-{
-	return texture(normal_map, texcoord.xy).xyz*2.0-1.0;
-}
-
-vec4 get_environment_sample(vec3 direction)
-{
-	return texture(environment_map, direction);
-}
-
-vec3 normal;
-vec4 diffuse_sample;
-
-vec3 singlepass_lighting()
-{
-	float shadow_sample = texture(shadow_map, shadow_coord);
-	float shadow_intensity = mix(1.0, shadow_sample, shadow_darkness);
-
-	vec3 ambient_light = ambient_color.rgb;
-	if(use_sky)
-	{
-		vec3 zenith_dir;
-		if(use_normal_map)
-			zenith_dir = tbn_zenith_dir;
-		else
-			zenith_dir = eye_zenith_dir;
-		float skylight_intensity = dot(normal, zenith_dir)*0.5+0.5;
-		ambient_light += skylight_intensity*sky_color.rgb;
-	}
-
-	vec3 n_light_dir = normalize(light_dir);
-	float diffuse_intensity = max(dot(normal, n_light_dir), 0.0);
-	if(use_shadow_map)
-		diffuse_intensity *= shadow_intensity;
-	vec3 diffuse_light = diffuse_intensity*light_sources[0].diffuse.rgb;
-
-	vec3 half_vec = normalize(light_dir-incident_dir);
-	float specular_intensity = pow(max(dot(half_vec, normal), 0.0), basic_material.shininess);
-	if(use_shadow_map)
-		specular_intensity *= shadow_intensity;
-	vec3 specular_light = specular_intensity*light_sources[0].specular.rgb;
-
-	vec3 result = basic_material.diffuse.rgb*ambient_light+basic_material.diffuse.rgb*diffuse_light;
-	if(use_diffuse_map)
-		result *= diffuse_sample.rgb;
-	if(use_specular)
-		result += basic_material.specular.rgb*specular_light;
-
-	return result;
-}
-
-float singlepass_transparency()
-{
-	float alpha = basic_material.diffuse.a;
-	if(use_diffuse_map)
-		alpha *= diffuse_sample.a;
-	return alpha;
-}
-
-vec3 singlepass_reflection()
-{
-	vec3 reflect_dir = reflect(incident_dir, normal);
-	if(use_normal_map)
-		reflect_dir = eye_tbn_matrix*reflect_dir;
-
-	return get_environment_sample(env_eye_matrix*reflect_dir).rgb;
-}
-
-vec4 singlepass_color()
-{
-	vec4 result = vec4(1.0);
-	if(use_vertex_color)
-		result *= color;
-	if(use_diffuse_map)
-		result *= get_diffuse_sample();
-	return result;
-}
-
-void main()
-{
-	if(use_normal_map)
-		normal = get_normal_sample();
-	else
-		normal = normalize(eye_normal);
-
-	diffuse_sample = get_diffuse_sample();
-
-	vec4 final_color;
-	if(use_lighting)
-		final_color = vec4(singlepass_lighting(), singlepass_transparency());
-	else
-		final_color = singlepass_color();
-
-	if(use_environment_map)
-		final_color += vec4(singlepass_reflection(), 0.0);
-	if(use_fog)
-	{
-		float fog_value = exp(fog_coord*fog_density);
-		final_color = vec4(mix(fog_color.rgb, final_color.rgb, fog_value), final_color.a);
-	}
-
-	frag_color = final_color;
-}
-- 
2.43.0