ImDrawData

Static Members #

Helper to add an external draw list into an existing ImDrawData.

Helper to convert all buffers from indexed to non-indexed, in case you cannot render indexed. Note: this is slow and most likely a waste of resources. Always prefer indexed rendering!

Helper to scale the ClipRect field of each ImDrawCmd. Use if your final output buffer is at a different scale than Dear ImGui expects, or if there is a difference between your window resolution and framebuffer resolution.

Instance Members #

Only valid after Render() is called and before the next NewFrame() is called.

== CmdLists.Size. (OBSOLETE: exists for legacy reasons). Number of ImDrawList* to render.

For convenience, sum of all ImDrawList's IdxBuffer.Size

For convenience, sum of all ImDrawList's VtxBuffer.Size

Array of ImDrawList* to render. The ImDrawLists are owned by ImGuiContext and only pointed to from here.

Top-left position of the viewport to render (== top-left of the orthogonal projection matrix to use) (== GetMainViewport()->Pos for the main viewport, == (0.0) in most single-viewport applications)

Size of the viewport to render (== GetMainViewport()->Size for the main viewport, == io.DisplaySize in most single-viewport applications)

Amount of pixels for each unit of DisplaySize. Copied from viewport->FramebufferScale (== io.DisplayFramebufferScale for main viewport). Generally (1,1) on normal display, (2,2) on OSX with Retina display.

Viewport carrying the ImDrawData instance, might be of use to the renderer (generally not).

List of textures to update. Most of the times the list is shared by all ImDrawData, has only 1 texture and it doesn't need any update. This almost always points to ImGui::GetPlatformIO().Textures[]. May be overridden or set to NULL if you want to manually update textures.

Metadata #