diff options
| -rw-r--r-- | src/i830_video.c | 61 |
1 files changed, 42 insertions, 19 deletions
diff --git a/src/i830_video.c b/src/i830_video.c index b655280d..22d9a1a4 100644 --- a/src/i830_video.c +++ b/src/i830_video.c @@ -590,18 +590,53 @@ I830SetOneLineModeRatio(ScrnInfoPtr pScrn) pPriv->oneLineMode = FALSE; } +static CARD32 I830BoundGammaElt (CARD32 elt, CARD32 eltPrev) +{ + elt &= 0xff; + eltPrev &= 0xff; + if (elt < eltPrev) + elt = eltPrev; + else if ((elt - eltPrev) > 0x7e) + elt = eltPrev + 0x7e; + return elt; +} + +static CARD32 I830BoundGamma (CARD32 gamma, CARD32 gammaPrev) +{ + return (I830BoundGammaElt (gamma >> 24, gammaPrev >> 24) << 24 | + I830BoundGammaElt (gamma >> 16, gammaPrev >> 16) << 16 | + I830BoundGammaElt (gamma >> 8, gammaPrev >> 8) << 8 | + I830BoundGammaElt (gamma , gammaPrev )); +} + static void I830UpdateGamma(ScrnInfoPtr pScrn) { I830Ptr pI830 = I830PTR(pScrn); I830PortPrivPtr pPriv = pI830->adaptor->pPortPrivates[0].ptr; - - OUTREG(OGAMC5, pPriv->gamma5); - OUTREG(OGAMC4, pPriv->gamma4); - OUTREG(OGAMC3, pPriv->gamma3); - OUTREG(OGAMC2, pPriv->gamma2); - OUTREG(OGAMC1, pPriv->gamma1); - OUTREG(OGAMC0, pPriv->gamma0); + CARD32 gamma0 = pPriv->gamma0; + CARD32 gamma1 = pPriv->gamma1; + CARD32 gamma2 = pPriv->gamma2; + CARD32 gamma3 = pPriv->gamma3; + CARD32 gamma4 = pPriv->gamma4; + CARD32 gamma5 = pPriv->gamma5; + + ErrorF ("Original gamma: 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx\n", + gamma0, gamma1, gamma2, gamma3, gamma4, gamma5); + gamma1 = I830BoundGamma (gamma1, gamma0); + gamma2 = I830BoundGamma (gamma2, gamma1); + gamma3 = I830BoundGamma (gamma3, gamma2); + gamma4 = I830BoundGamma (gamma4, gamma3); + gamma5 = I830BoundGamma (gamma5, gamma4); + ErrorF ("Bounded gamma: 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx\n", + gamma0, gamma1, gamma2, gamma3, gamma4, gamma5); + + OUTREG(OGAMC5, gamma5); + OUTREG(OGAMC4, gamma4); + OUTREG(OGAMC3, gamma3); + OUTREG(OGAMC2, gamma2); + OUTREG(OGAMC1, gamma1); + OUTREG(OGAMC0, gamma0); } static XF86VideoAdaptorPtr @@ -847,28 +882,16 @@ I830SetPortAttribute(ScrnInfoPtr pScrn, #endif } else if (attribute == xvGamma0 && (IS_I9XX(pI830))) { pPriv->gamma0 = value; - if (pPriv->gamma1 - pPriv->gamma0 > 0x7d) - pPriv->gamma1 = pPriv->gamma0 + 0x7d; } else if (attribute == xvGamma1 && (IS_I9XX(pI830))) { pPriv->gamma1 = value; - if (pPriv->gamma1 - pPriv->gamma0 > 0x7d) - pPriv->gamma0 = pPriv->gamma1 - 0x7d; } else if (attribute == xvGamma2 && (IS_I9XX(pI830))) { pPriv->gamma2 = value; - if (pPriv->gamma3 - pPriv->gamma2 > 0x7d) - pPriv->gamma3 = pPriv->gamma2 + 0x7d; } else if (attribute == xvGamma3 && (IS_I9XX(pI830))) { pPriv->gamma3 = value; - if (pPriv->gamma3 - pPriv->gamma2 > 0x7d) - pPriv->gamma2 = pPriv->gamma3 - 0x7d; } else if (attribute == xvGamma4 && (IS_I9XX(pI830))) { pPriv->gamma4 = value; - if (pPriv->gamma5 - pPriv->gamma4 > 0x7d) - pPriv->gamma5 = pPriv->gamma4 + 0x7d; } else if (attribute == xvGamma5 && (IS_I9XX(pI830))) { pPriv->gamma5 = value; - if (pPriv->gamma5 - pPriv->gamma4 > 0x7d) - pPriv->gamma4 = pPriv->gamma5 - 0x7d; } else if (attribute == xvColorKey) { pPriv->colorKey = value; switch (pScrn->depth) { |