1 files changed, 0 insertions, 98 deletions
diff --git a/client/shaders/alpha_shader/opengl_vertex.glsl b/client/shaders/alpha_shader/opengl_vertex.glsl
deleted file mode 100644
index 356ba2eb9..000000000
--- a/client/shaders/alpha_shader/opengl_vertex.glsl
+++ /dev/null
@@ -1,98 +0,0 @@
-uniform mat4 mWorldViewProj;
-uniform mat4 mInvWorld;
-uniform mat4 mTransWorld;
-uniform mat4 mWorld;
-
-uniform float dayNightRatio;
-
-uniform vec3 eyePosition;
-
-varying vec3 vPosition;
-varying vec3 worldPosition;
-
-varying vec3 eyeVec;
-varying vec3 lightVec;
-
-varying vec3 tsEyeVec;
-varying vec3 tsLightVec;
-
-const float BS = 10.0;
-
-void main(void)
-{
-	gl_TexCoord[0] = gl_MultiTexCoord0;
-	gl_Position = mWorldViewProj * gl_Vertex;
-	vPosition = gl_Position.xyz;
-	worldPosition = (mWorld * gl_Vertex).xyz;
-	vec3 sunPosition = vec3 (0.0, eyePosition.y * BS + 900.0, 0.0);
-
-	vec3 normal, tangent, binormal;
-	normal = normalize(gl_NormalMatrix * gl_Normal);
-	if (gl_Normal.x > 0.5) {
-		//  1.0,  0.0,  0.0
-		tangent  = normalize(gl_NormalMatrix * vec3( 0.0,  0.0, -1.0));
-		binormal = normalize(gl_NormalMatrix * vec3( 0.0, -1.0,  0.0));
-	} else if (gl_Normal.x < -0.5) {
-		// -1.0,  0.0,  0.0
-		tangent  = normalize(gl_NormalMatrix * vec3( 0.0,  0.0,  1.0));
-		binormal = normalize(gl_NormalMatrix * vec3( 0.0, -1.0,  0.0));
-	} else if (gl_Normal.y > 0.5) {
-		//  0.0,  1.0,  0.0
-		tangent  = normalize(gl_NormalMatrix * vec3( 1.0,  0.0,  0.0));
-		binormal = normalize(gl_NormalMatrix * vec3( 0.0,  0.0,  1.0));
-	} else if (gl_Normal.y < -0.5) {
-		//  0.0, -1.0,  0.0
-		tangent  = normalize(gl_NormalMatrix * vec3( 1.0,  0.0,  0.0));
-		binormal = normalize(gl_NormalMatrix * vec3( 0.0,  0.0,  1.0));
-	} else if (gl_Normal.z > 0.5) {
-		//  0.0,  0.0,  1.0
-		tangent  = normalize(gl_NormalMatrix * vec3( 1.0,  0.0,  0.0));
-		binormal = normalize(gl_NormalMatrix * vec3( 0.0, -1.0,  0.0));
-	} else if (gl_Normal.z < -0.5) {
-		//  0.0,  0.0, -1.0
-		tangent  = normalize(gl_NormalMatrix * vec3(-1.0,  0.0,  0.0));
-		binormal = normalize(gl_NormalMatrix * vec3( 0.0, -1.0,  0.0));
-	}
-	mat3 tbnMatrix = mat3(	tangent.x, binormal.x, normal.x,
-							tangent.y, binormal.y, normal.y,
-							tangent.z, binormal.z, normal.z);
-
-	lightVec = sunPosition - worldPosition;
-	tsLightVec = lightVec * tbnMatrix;
-	eyeVec = (gl_ModelViewMatrix * gl_Vertex).xyz;
-	tsEyeVec = eyeVec * tbnMatrix;
-
-	vec4 color;
-	float day = gl_Color.r;
-	float night = gl_Color.g;
-	float light_source = gl_Color.b;
-
-	float rg = mix(night, day, dayNightRatio);
-	rg += light_source * 2.5; // Make light sources brighter
-	float b = rg;
-
-	// Moonlight is blue
-	b += (day - night) / 13.0;
-	rg -= (day - night) / 13.0;
-
-	// Emphase blue a bit in darker places
-	// See C++ implementation in mapblock_mesh.cpp finalColorBlend()
-	b += max(0.0, (1.0 - abs(b - 0.13)/0.17) * 0.025);
-
-	// Artificial light is yellow-ish
-	// See C++ implementation in mapblock_mesh.cpp finalColorBlend()
-	rg += max(0.0, (1.0 - abs(rg - 0.85)/0.15) * 0.065);
-
-	color.r = clamp(rg,0.0,1.0);
-	color.g = clamp(rg,0.0,1.0);
-	color.b = clamp(b,0.0,1.0);
-
-	// Make sides and bottom darker than the top
-	color = color * color; // SRGB -> Linear
-	if(gl_Normal.y <= 0.5)
-		color *= 0.6;
-	color = sqrt(color); // Linear -> SRGB
-	color.a = gl_Color.a;
-
-	gl_FrontColor = gl_BackColor = color;
-}