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powervr2: Fix blc/blic [O. Galibert]

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This commit is contained in:
Olivier Galibert 2013-06-14 17:10:10 +00:00
parent 0073de5340
commit 358509548a
1 changed files with 5 additions and 5 deletions
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10
src/mame/video/powervr2.c
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@ -96,7 +96,6 @@ const int powervr2_device::pvr_wordspolygon[24] = {8,8,8,8,8, 8, 8,8,8,8,16,16,8
#define DEBUG_PALRAM (1)
#define DEBUG_PVRCTRL (0)
// Perform a standard bilinear filter across four pixels
inline INT32 powervr2_device::clamp(INT32 in, INT32 min, INT32 max)
{
if(in < min) return min;
@ -104,6 +103,7 @@ inline INT32 powervr2_device::clamp(INT32 in, INT32 min, INT32 max)
return in;
}
// Perform a standard bilinear filter across four pixels
inline UINT32 powervr2_device::bilinear_filter(UINT32 c0, UINT32 c1, UINT32 c2, UINT32 c3, float u, float v)
{
UINT32 ui = (u * 256.0);
@ -130,12 +130,12 @@ inline UINT32 powervr2_device::blc(UINT32 c1, UINT32 c2)
{
UINT32 cr =
(((c1 & 0x000000ff)*(c2 & 0x000000ff) & 0x0000ff00) >> 8) |
(((c1 & 0x0000ff00)*(c2 & 0x0000ff00) & 0x00ff0000) >> 8);
(((c1 & 0x0000ff00)*(c2 & 0x0000ff00) & 0xff000000) >> 16);
c1 >>= 16;
c2 >>= 16;
cr |=
(((c1 & 0x000000ff)*(c2 & 0x000000ff) & 0x0000ff00) << 8) |
(((c1 & 0x0000ff00)*(c2 & 0x0000ff00) & 0x00ff0000) << 8);
(((c1 & 0x0000ff00)*(c2 & 0x0000ff00) & 0xff000000));
return cr;
}
@ -144,12 +144,12 @@ inline UINT32 powervr2_device::blic(UINT32 c1, UINT32 c2)
{
UINT32 cr =
(((c1 & 0x000000ff)*(0x00100-(c2 & 0x000000ff)) & 0x0000ff00) >> 8) |
(((c1 & 0x0000ff00)*(0x10000-(c2 & 0x0000ff00)) & 0x00ff0000) >> 8);
(((c1 & 0x0000ff00)*(0x10000-(c2 & 0x0000ff00)) & 0xff000000) >> 16);
c1 >>= 16;
c2 >>= 16;
cr |=
(((c1 & 0x000000ff)*(0x00100-(c2 & 0x000000ff)) & 0x0000ff00) << 8) |
(((c1 & 0x0000ff00)*(0x10000-(c2 & 0x0000ff00)) & 0x00ff0000) << 8);
(((c1 & 0x0000ff00)*(0x10000-(c2 & 0x0000ff00)) & 0xff000000));
return cr;
}