public static List <BuiltIn> GetUniformBuiltIns()
{
if (_uniformBuiltins == null)
{
_startTime = DateTime.Now;
Register("_worldToClip", (location, display) =>
{
float[] w2c = display.GetOpenGLWorldToClip(true);
OpenGL.glUniformMatrix4fv(location, 1, false, w2c);
});
Register("_viewportSize", (location, display) =>
{
var viewportSize = display.Viewport.Size;
OpenGL.glUniform2f(location, (float)viewportSize.Width, (float)viewportSize.Height);
});
Register("_worldToCamera", (location, display) =>
{
float[] w2c = display.GetOpenGLWorldToCamera(true);
OpenGL.glUniformMatrix4fv(location, 1, false, w2c);
});
Register("_worldToCameraNormal", (location, display) =>
{
var xf = display.Viewport.GetTransform(Rhino.DocObjects.CoordinateSystem.World, Rhino.DocObjects.CoordinateSystem.Camera);
xf = xf.Transpose();
Rhino.Geometry.Transform m;
xf.TryGetInverse(out m);
m = m.Transpose();
float[] w2cn = new float[] { (float)m.M00, (float)m.M01, (float)m.M02,
(float)m.M10, (float)m.M11, (float)m.M12,
(float)m.M20, (float)m.M21, (float)m.M22 };
OpenGL.glUniformMatrix3fv(location, 1, false, w2cn);
});
Register("_worldToScreen", (location, display) =>
{
var xf = display.Viewport.GetTransform(Rhino.DocObjects.CoordinateSystem.World, Rhino.DocObjects.CoordinateSystem.Screen);
xf = xf.Transpose();
Rhino.Geometry.Transform m;
xf.TryGetInverse(out m);
m = m.Transpose();
float[] w2cn = new float[] { (float)m.M00, (float)m.M01, (float)m.M02, (float)m.M03,
(float)m.M10, (float)m.M11, (float)m.M12, (float)m.M13,
(float)m.M20, (float)m.M21, (float)m.M22, (float)m.M23 };
OpenGL.glUniformMatrix4fv(location, 1, false, w2cn);
});
Register("_cameraToClip", (location, display) =>
{
float[] c2c = display.GetOpenGLCameraToClip();
OpenGL.glUniformMatrix4fv(location, 1, false, c2c);
});
Register("_time", (location, display) =>
{
var span = DateTime.Now - _startTime;
double seconds = span.TotalSeconds;
OpenGL.glUniform1f(location, (float)seconds);
});
Register("_cameraLocation", (location, display) =>
{
var camLoc = display.Viewport.CameraLocation;
OpenGL.glUniform3f(location, (float)camLoc.X, (float)camLoc.Y, (float)camLoc.Z);
});
const int maxlights = 4;
Register("_lightCount", (location, display) =>
{
// Use reflection until 6.3 goes to release candidate. GetLights is not available until 6.3
//var lights = display.GetLights();
var lights = GetLightsHelper(display);
int count = lights.Length < maxlights ? lights.Length : 4;
OpenGL.glUniform1i(location, count);
});
Register($"_lightPosition[{maxlights}]", (location, display) =>
{
// Use reflection until 6.3 goes to release candidate. GetLights is not available until 6.3
//var lights = display.GetLights();
var lights = GetLightsHelper(display);
float[] v = new float[3 * maxlights];
for (int i = 0; i < lights.Length; i++)
{
if (i >= maxlights)
{
break;
}
var loc = lights[i].Location;
v[i * 3] = (float)loc.X;
v[i * 3 + 1] = (float)loc.Y;
v[i * 3 + 2] = (float)loc.Z;
}
OpenGL.glUniform3fv(location, maxlights, v);
});
Register($"_lightDirection[{maxlights}]", (location, display) =>
{
// Use reflection until 6.3 goes to release candidate. GetLights is not available until 6.3
//var lights = display.GetLights();
var lights = GetLightsHelper(display);
float[] v = new float[3 * maxlights];
for (int i = 0; i < lights.Length; i++)
{
if (i >= maxlights)
{
break;
}
var direction = lights[i].Direction;
v[i * 3] = (float)direction.X;
v[i * 3 + 1] = (float)direction.Y;
v[i * 3 + 2] = (float)direction.Z;
}
OpenGL.glUniform3fv(location, maxlights, v);
});
Register($"_lightInCameraSpace[{maxlights}]", (location, display) =>
{
// Use reflection until 6.3 goes to release candidate. GetLights is not available until 6.3
//var lights = display.GetLights();
var lights = GetLightsHelper(display);
int[] v = new int[maxlights];
for (int i = 0; i < lights.Length; i++)
{
if (i >= maxlights)
{
break;
}
bool isCameraLight = lights[i].CoordinateSystem == Rhino.DocObjects.CoordinateSystem.Camera;
v[i] = isCameraLight ? 1 : 0;
}
OpenGL.glUniform1iv(location, maxlights, v);
});
_uniformBuiltins.Sort((a, b) => (a.Name.CompareTo(b.Name)));
}
return(_uniformBuiltins);
}
