-
- switch (spu.fb.depth_format) {
- case PIPE_FORMAT_Z16_UNORM:
- frag_depth = si_fm(frag_depth, (qword)spu_splats((float)(0x0000ffffu)));
- frag_depth = si_cfltu(frag_depth, 0);
- break;
- case PIPE_FORMAT_Z32_UNORM:
- frag_depth = si_fm(frag_depth, (qword)spu_splats((float)(0xffffffffu)));
- frag_depth = si_cfltu(frag_depth, 0);
- break;
- case PIPE_FORMAT_Z24S8_UNORM:
- case PIPE_FORMAT_S8Z24_UNORM:
- frag_depth = si_fm(frag_depth, (qword)spu_splats((float)(0x00ffffffu)));
- frag_depth = si_cfltu(frag_depth, 0);
- break;
- default:
- ASSERT(0);
- break;
- }
+
+ /* convert floating point Z values to 32-bit uint */
+
+ /* frag_depth *= spu.fb.zscale */
+ frag_depth = si_fm(frag_depth, (qword)spu_splats(spu.fb.zscale));
+ /* frag_depth = uint(frag_depth) */
+ frag_depth = si_cfltu(frag_depth, 0);