Babylon.js/materialsLibrary/materials/sky/sky.vertex.fx

precision highp float;

// Attributes
attribute vec3 position;

#ifdef VERTEXCOLOR
attribute vec4 color;
#endif

// Uniforms
uniform mat4 world;
uniform mat4 viewProjection;

#ifdef POINTSIZE
uniform float pointSize;
#endif

// Output
varying vec3 vPositionW;

#ifdef VERTEXCOLOR
varying vec4 vColor;
#endif

#ifdef CLIPPLANE
uniform vec4 vClipPlane;
varying float fClipDistance;
#endif

#ifdef FOG
varying float fFogDistance;
#endif

void main(void) {
	gl_Position = viewProjection * world * vec4(position, 1.0);
	
	vec4 worldPos = world * vec4(position, 1.0);
	vPositionW = vec3(worldPos);

	// Clip plane
#ifdef CLIPPLANE
	fClipDistance = dot(worldPos, vClipPlane);
#endif

	// Fog
#ifdef FOG
	fFogDistance = (view * worldPos).z;
#endif

	// Vertex color
#ifdef VERTEXCOLOR
	vColor = color;
#endif

	// Point size
#ifdef POINTSIZE
	gl_PointSize = pointSize;
#endif
}