1 files changed, 27 insertions, 0 deletions
diff --git a/gfx/gl/shaders/billboard.vert b/gfx/gl/shaders/billboard.vert
new file mode 100644
index 0000000..d6d3869
--- /dev/null
+++ b/gfx/gl/shaders/billboard.vert
@@ -0,0 +1,27 @@
+#version 460 core
+#extension GL_ARB_shading_language_include : enable
+
+#include "commonLocationData.glsl"
+
+uniform mat4 viewProjection;
+uniform ivec4 viewPort;
+uniform ivec3 viewPoint;
+uniform vec3 centre;
+uniform float size;
+
+layout(location = 0) in uint index;
+
+flat out vec3 ModelPos;
+flat out float Yaw;
+flat out float Depth;
+
+void
+main()
+{
+	const ivec3 modelPos = locations[cldIndex[index]].position.xyz;
+	ModelPos = modelPos - viewPoint;
+	Yaw = locations[cldIndex[index]].rotation.x;
+	gl_Position = viewProjection * vec4(ModelPos + centre, 1);
+	Depth = gl_Position.w;
+	gl_PointSize = (viewPort.w * size * 2) / gl_Position.w;
+}