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gallium/util: implement tile code for PIPE_FORMAT_Z32_FLOAT

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Reviewed-by: José Fonseca <jfonseca@vmware.com>
This commit is contained in:
Brian Paul 2012-08-27 09:31:18 -06:00
parent a971476cc7
commit f308c80490
1 changed files with 36 additions and 0 deletions
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36
src/gallium/auxiliary/util/u_tile.c
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@ -679,6 +679,28 @@ pipe_get_tile_z(struct pipe_context *pipe,
}
}
break;
case PIPE_FORMAT_Z32_FLOAT:
{
const float *ptrc = (const float *)(map + y * pt->stride + x*4);
for (i = 0; i < h; i++) {
for (j = 0; j < w; j++) {
/* convert float Z to 32-bit Z */
if (ptrc[j] <= 0.0) {
pDest[j] = 0;
}
else if (ptrc[j] >= 1.0) {
pDest[j] = 0xffffffff;
}
else {
double z = ptrc[j] * 0xffffffff;
pDest[j] = (uint) z;
}
}
pDest += dstStride;
ptrc += pt->stride/4;
}
}
break;
default:
assert(0);
}
@ -786,6 +808,20 @@ pipe_put_tile_z(struct pipe_context *pipe,
}
}
break;
case PIPE_FORMAT_Z32_FLOAT:
{
float *pDest = (float *) (map + y * pt->stride + x*2);
for (i = 0; i < h; i++) {
for (j = 0; j < w; j++) {
/* convert 32-bit integer Z to float Z */
const double scale = 1.0 / 0xffffffffU;
pDest[j] = ptrc[j] * scale;
}
pDest += pt->stride/4;
ptrc += srcStride;
}
}
break;
default:
assert(0);
}