<function name="DrawTexturedRectUV" parent="surface" type="libraryfunc"> <description> Draws a textured rectangle with a repeated or partial texture. u and v refer to texture coordinates. * (u, v) = (0, 0) is the top left * (u, v) = (1, 0) is the top right * (u, v) = (1, 1) is the bottom right * (u, v) = (0, 1) is the bottom left Using a start point of (1, 0) and an end point to (0, 1), you can draw an image flipped horizontally, same goes with other directions. Going above 1 will tile the texture. Negative values are allowed as well. Here's a helper image: <upload src="70c/8d7bba248dc08bd.png" size="183359" name="image.png" /> <note>If you are using a .png image, you need supply the "noclamp" flag as second parameter for <page>Global.Material</page> if you intend to use tiling.</note> <note>If you find that surface.DrawTexturedRectUV is getting your texture coordinates (u0, v0), (u1, v1) wrong and you're rendering with a material created with <page>Global.CreateMaterial</page>, try adjusting them with the following code: ``` local du = 0.5 / 32 -- half pixel anticorrection local dv = 0.5 / 32 -- half pixel anticorrection local u0, v0 = (u0 - du) / (1 - 2 * du), (v0 - dv) / (1 - 2 * dv) local u1, v1 = (u1 - du) / (1 - 2 * du), (v1 - dv) / (1 - 2 * dv) ``` **Explanation:** surface.DrawTexturedRectUV tries to correct the texture coordinates by half a pixel (something to do with sampling) and computes the correction using IMaterial::GetMappingWidth()/GetMappingHeight(). If the material was created without a $basetexture, then GetMappingWidth()/GetMappingHeight() uses the width and height of the error material (which is 32x32).</note> <rendercontext hook="false" type="2D"/>⤶ <rendercontext hook="false" type="2D"></rendercontext>⤶ <bug issue="3173">The UV offsets might require (sub-)pixel correction for accurate tiling results.</bug> </description> <realm>Client and Menu</realm> <args> <arg name="x" type="number">The X integer coordinate.</arg> <arg name="y" type="number">The Y integer coordinate.</arg> <arg name="width" type="number">The integer width of the rectangle.</arg> <arg name="height" type="number">The integer height of the rectangle.</arg> <arg name="startU" type="number">The U texture mapping of the rectangle origin.</arg> <arg name="startV" type="number">The V texture mapping of the rectangle origin.</arg> <arg name="endU" type="number">The U texture mapping of the rectangle end.</arg> <arg name="endV" type="number">The V texture mapping of the rectangle end.</arg> </args> </function> <example> <description>Demonstrates the function usage.</description> <code> local mat = Material( "gui/tool.png" ) hook.Add( "HUDPaint", "DrawTexturedRectUV_example1", function() surface.SetDrawColor( color_white ) surface.SetMaterial( mat ) surface.DrawTexturedRect( 25, 25, 100, 100 ) surface.DrawTexturedRectUV( 25, 130, 100, 100, 0, 0, 1, 1 ) -- Exactly same as above line -- Draws right half of the texture -- Note that we also change the width of the rectangle to avoid stetcing of the texture -- This is for demonstration purposes, you can do whatever it is you need surface.DrawTexturedRectUV( 130, 130, 50, 100, 0.5, 0, 1, 1 ) end ) </code> </example> <example> <description>Paints repeated texture over a panel</description> <code> function PANEL:Paint( w, h ) -- Size of your texture, texW - width, texH - height local texW = 16 local texH = 16 surface.SetMaterial( Material( "icon16/box.png", "noclamp" ) ) surface.SetDrawColor( color_white ) surface.DrawTexturedRectUV( 0, 0, w, h, 0, 0, w / texW, h / texH ) end </code> </example>