How can i get the ViewProjection matrix?

[deerangle]

for my calculations for my in-game overlay mod, i need the view projection matrix that I can translate world positions to screen positions. how can I get this matrix (those matrices)?

[Silly511]

In your class:

public static final FloatBuffer projection = GLAllocation.createDirectFloatBuffer(16);
public static final FloatBuffer modelview = GLAllocation.createDirectFloatBuffer(16);

And then in your method:

GlStateManager.getFloat(GL11.GL_PROJECTION_MATRIX, projection);
GlStateManager.getFloat(GL11.GL_MODELVIEW_MATRIX, modelview);
Matrix4f projectionMatrix = (Matrix4f) new Matrix4f().load(projection.asReadOnlyBuffer());
Matrix4f modelViewMatrix = (Matrix4f) new Matrix4f().load(modelview.asReadOnlyBuffer());
Matrix4f result = Matrix4f.mul(modelViewMatrix, projectionMatrix, null);

 

Edited August 8, 2017 by Silly511