b2dDrawImageQuadDepth

Maps a whole image onto four arbitrary corners AND gives each corner a depth (z1..z4, 0 = near .. 1 = far). The quad is z-tested per pixel against the shared 2D depth buffer, so textured faces interpenetrate and self-occlude correctly - real 3D built from the 2D runtime, no manual sorting or backface culling. Shares the depth buffer with b2dDrawQuadDepth and b2dSetDepth, so all three occlude one another. Honours b2dSetColor (tint) and b2dSetAlpha. Needs a depth buffer (the main backbuffer or a canvas); on a plain b2d render target it falls back to a flat draw. Supply PERSPECTIVE-CORRECT depths (a + b/z form), not linear view-Z - see b2dDrawQuadDepth. For custom sub-region UVs use b2dDrawImageQuadDepthUV.