b3dDrawTriangle3D

Draws a hardcoded test triangle in 3D space (debug/testing function). Takes no parameters. Returns nothing. Renders predefined triangle geometry using active camera view, useful for testing 3D rendering pipeline and camera setup.

Function purpose: testing and debugging tool (verify 3D rendering works), demonstrates basic 3D rendering (minimal viable 3D draw call), validates camera setup (checks view/projection matrices), quick visual feedback (confirm rendering pipeline active).

Triangle characteristics: fixed position and vertices (predefined geometry, not configurable), rendered in 3D space (affected by camera view and projection), uses basic shader (simple color rendering, no textures or lighting), single draw call (minimal overhead for testing).

Use cases: (1) Test 3D rendering (verify graphics system initialized correctly), (2) Debug camera (check if camera positioned and oriented correctly), (3) Pipeline validation (confirm shaders, buffers, and states configured), (4) Quick visual test (ensure b3dGraphics3D and b3dRenderWorld working).

Common patterns: test render = b3dCls3D(): b3dDrawTriangle3D(): b3dRenderWorld(); camera test = b3dPositionEntity(camera, 0, 0, -5): b3dDrawTriangle3D(): b3dRenderWorld() (see if triangle visible).

Performance: very fast (~0.001ms, single triangle draw), minimal GPU cost (3 vertices, 1 primitive), negligible CPU overhead (no parameter processing).

Limitations: not for production use (debug/test function only), fixed geometry (cannot customize position, size, color), limited functionality (no textures, lighting, or transforms), use b3dCreateMesh for real geometry.

Related: b3dGraphics3D initializes 3D rendering, b3dRenderWorld executes render commands, b3dCreateMesh creates custom geometry, b3dCls3D clears 3D scene.