1 files changed, 69 insertions, 0 deletions
diff --git a/client/shaders/liquids_shader/opengl_vertex.glsl b/client/shaders/liquids_shader/opengl_vertex.glsl
new file mode 100644
index 000000000..8ceb9f2cb
--- /dev/null
+++ b/client/shaders/liquids_shader/opengl_vertex.glsl
@@ -0,0 +1,69 @@
+#version 120
+
+uniform mat4 mWorldViewProj;
+uniform mat4 mInvWorld;
+uniform mat4 mTransWorld;
+uniform float dayNightRatio;
+uniform float animationTimer;
+
+uniform float enableWavingWater;
+uniform float waterWaveLength;
+uniform float waterWaveHeight;
+uniform float waterWaveSpeed;
+
+uniform vec3 eyePosition;
+
+varying vec3 vPosition;
+varying vec3 eyeVec;
+
+void main(void)
+{
+	if (enableWavingWater == 1.0){
+		vec4 pos2 = gl_Vertex;
+		pos2.y -= 2.0;
+		pos2.y -= sin (pos2.z/waterWaveLength + animationTimer * waterWaveSpeed * waterWaveLength) * waterWaveHeight
+			+ sin ((pos2.z/waterWaveLength + animationTimer * waterWaveSpeed * waterWaveLength) / 7.0) * waterWaveHeight;
+		gl_Position = mWorldViewProj * pos2;
+	} else
+		gl_Position = mWorldViewProj * gl_Vertex;
+
+	eyeVec = (gl_ModelViewMatrix * gl_Vertex).xyz;
+	vPosition = (mWorldViewProj * gl_Vertex).xyz;
+
+	vec4 color;
+	//color = vec4(1.0, 1.0, 1.0, 1.0);
+
+	float day = gl_Color.r;
+	float night = gl_Color.g;
+	float light_source = gl_Color.b;
+
+	/*color.r = mix(night, day, dayNightRatio);
+	color.g = color.r;
+	color.b = color.r;*/
+
+	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);
+	color.a = gl_Color.a;
+
+	gl_FrontColor = gl_BackColor = color;
+
+	gl_TexCoord[0] = gl_MultiTexCoord0;
+
+}