Anarchy
25/10/2003, 02:20
Al parecer, la licencia del engine en el que está trabajando <b>ThunderZ</b> ha dejado de ser comercial, por lo que en breve espera distribuir la versión para GP32 y todas las utilidades para que cualquiera pueda usarlo.
Aquí van las características actuales del engine. No las traduzco porque son unas cuantas :D
*The current GP32 viewport is 320x240 pixels, 16bit.
*Engine supports radiosity lighting and shadows.
*All textures are 64x64 8bit.
*Rotated vertices are cached and reused by neighbouring cells.
*A vertex pool is used to insert new vertices into clipped polygons reducing memory shifting.
*Textures are converted to 15bit via a pre-calculated lighting LUT.
*Polygons can be any convex shape. Only squares are currently used.
*Each vertex is described as X, Y, Z, U, V and brightness.
*The renderer uses 24:8 fixed point maths.
*Polygons are clipped in 3D space using 45 degree planes. Distance to plane calculations therefore use only additions and subtractions.
*Polygon edges are clipped using one divide and 6 multiplies.
*4 clipping planes are used. No front plane is required. No back plane is used.
*No per-span clipping is used. Fixed point errors are hidden offscreen.
*Ray-casting is used to build a visablity list and valid polygon rendering order.
*Models are merged into the VIS without sorting.
*No Z-buffers are used. Rendering is back-to-front (painters algorithm).
*The is an acceptable level of overdraw. Complete polygons are culled. Polygon edges are drawn faster than using a per span clipper.
*Lighting is pre-calculated on startup. Lighting can be moved at runtime.
*Lighting is expanded per vertex and interpolated along polygon edges.
*A reciprocal table is used to eliminate all divides from the DDA texture mapper.
*The affine texture loop is unrolled and renders blocks of 32 pixels.
Fuente: <a href="http://www.gp32news.com" target="_blank"><b>GP32 News</b></a>
<div align="center"><img src="/imagenes/thunderz_3d.jpg"></div>
Aquí van las características actuales del engine. No las traduzco porque son unas cuantas :D
*The current GP32 viewport is 320x240 pixels, 16bit.
*Engine supports radiosity lighting and shadows.
*All textures are 64x64 8bit.
*Rotated vertices are cached and reused by neighbouring cells.
*A vertex pool is used to insert new vertices into clipped polygons reducing memory shifting.
*Textures are converted to 15bit via a pre-calculated lighting LUT.
*Polygons can be any convex shape. Only squares are currently used.
*Each vertex is described as X, Y, Z, U, V and brightness.
*The renderer uses 24:8 fixed point maths.
*Polygons are clipped in 3D space using 45 degree planes. Distance to plane calculations therefore use only additions and subtractions.
*Polygon edges are clipped using one divide and 6 multiplies.
*4 clipping planes are used. No front plane is required. No back plane is used.
*No per-span clipping is used. Fixed point errors are hidden offscreen.
*Ray-casting is used to build a visablity list and valid polygon rendering order.
*Models are merged into the VIS without sorting.
*No Z-buffers are used. Rendering is back-to-front (painters algorithm).
*The is an acceptable level of overdraw. Complete polygons are culled. Polygon edges are drawn faster than using a per span clipper.
*Lighting is pre-calculated on startup. Lighting can be moved at runtime.
*Lighting is expanded per vertex and interpolated along polygon edges.
*A reciprocal table is used to eliminate all divides from the DDA texture mapper.
*The affine texture loop is unrolled and renders blocks of 32 pixels.
Fuente: <a href="http://www.gp32news.com" target="_blank"><b>GP32 News</b></a>
<div align="center"><img src="/imagenes/thunderz_3d.jpg"></div>