Stencil tests for GUI elements #1538
Labels
area: renderer
Concerns our graphics renderer
area: ui
Related to the graphical user interface (Qt)
improvement
Enhancement of an existing component
lang: c++
Done in C++ code
This could be a rather small optimization for the renderer. The idea is to save rendering time by not rendering pixels in the game world that would be hidden by GUI elements anyway. To do this, we would create a stencil mask from opaque elements in the GUI and apply this mask in all other render passes. Doing this allows the GPU to discard fragments masked by the stencil mask early and save some time during rendering as a result.
The time save depends on a few conditions. For example, the stencil test gets more effective if the GUI covers large parts of the screen and the elements don't change positions. However, this should be at least the case for the old AoE1/AoE2/SWGB GUIs.
Tasks:
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