Azur

Azur is a rendering library and small engine layer for calculator games. On ClassPad, the useful part is the gint renderer in <azur/gint/render.h>.

Azur does not draw each command directly to the display. Instead, it records drawing commands, sorts them by screen fragment, then renders the fragments and sends them to the LCD. This is useful for games that draw many shapes, text, or images every frame.

ClassPad support was added in the Azur repository with the FxCP port. The first ClassPad support commit is 0367526a40, then 443a6ce finalized the port.

What Azur gives you

• A fast command-based renderer for gint
• Drawing functions such as azrp_clear, azrp_rect, azrp_triangle, azrp_line, azrp_text and azrp_print
• Image drawing helpers using gint images
• Performance counters for command generation, sorting, shaders, LCD transfer and total render time
• A C++ main loop helper with separate update and render callbacks

ClassPad notes

Use fxsdk build-cp for ClassPad projects. The output is a .hh3 file generated with generate_hh3.

Azur on ClassPad uses the gint backend. You normally link Azur::Azur with Gint::Gint.

The ClassPad screen is 320x528. Colors are usually 16-bit RGB555 values created with C_RGB(r, g, b), where each component goes from 0 to 31.

Pages

Getting Started Build a small Azur demo with a color-changing triangle and performance counters.

Renderer Reference Quick reference for the most useful Azur renderer calls on ClassPad.