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added virtualscreen support: overlay output window gets corrected when viewport in virtualscreen is moved.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14276 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Rudolf Cornelissen
2005-09-29 10:04:18 +00:00
parent 980cfe5327
commit 217024e94c
1 changed files with 21 additions and 44 deletions
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src/add-ons/accelerants/via/engine/bes.c
+21 -44
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@@ -397,23 +397,30 @@ static void eng_bes_program_move_overlay(move_overlay_info moi)
**************************************/
/* setup clipped(!) buffer startadress in RAM */
/* RIVA128 - TNT bes doesn't have clipping registers, so no subpixelprecise clipping
/* VIA bes doesn't have clipping registers, so no subpixelprecise clipping
* either. We do pixelprecise vertical and 'two pixel' precise horizontal clipping here. */
/* (program both buffers to prevent sync distortions) */
/* first include 'pixel precise' left clipping... (top clipping was already included) */
moi.a1orgv += ((moi.hsrcstv >> 16) * 2);
/* we need to step in 4-byte (2 pixel) granularity due to the nature of yuy2 */
// BESW(NV04_0BUFADR, (moi.a1orgv & ~0x03));
// BESW(NV04_1BUFADR, (moi.a1orgv & ~0x03));
BESW(VID1Y_ADDR0, (moi.a1orgv & 0x07fffffc));
/* horizontal source end does not use subpixelprecision: granularity is 8 pixels */
/* notes:
* - make absolutely sure the engine can fetch the last pixel needed from
* the sourcebitmap even if only to generate a tiny subpixel from it!
* - the engine uses byte format instead of pixel format;
* - the engine uses 16 bytes, so 8 pixels granularity. */
BESW(VID1_FETCH, (((((moi.hsrcendv >> 16) + 1 + 0x0007) & ~0x0007) * 2) << (20 - 4)));
/* setup output window position */
// BESW(NV04_DSTREF, ((moi.vcoordv & 0xffff0000) | ((moi.hcoordv & 0xffff0000) >> 16)));
BESW(VID1_HVSTART, ((moi.hcoordv & 0xffff0000) | ((moi.vcoordv & 0xffff0000) >> 16)));
/* setup output window size */
// BESW(NV04_DSTSIZE, (
// (((moi.vcoordv & 0x0000ffff) - ((moi.vcoordv & 0xffff0000) >> 16) + 1) << 16) |
// ((moi.hcoordv & 0x0000ffff) - ((moi.hcoordv & 0xffff0000) >> 16) + 1)
// ));
/* select buffer 1 as active (b16) */
// BESW(NV04_SU_STATE, 0x00010000);
BESW(VID1_SIZE, (((moi.hcoordv & 0x0000ffff) << 16) | (moi.vcoordv & 0x0000ffff)));
/* enable colorkeying (b0 = 1), disable chromakeying (b1 = 0), Vid1 on top of Vid3 (b20 = 0),
* all registers are loaded during the next 'BES-'VBI (b28 = 1), Vid1 cmds fire (b31 = 1) */
BESW(COMPOSE, 0x90000001);
}
status_t eng_bes_to_crtc(bool crtc)
@@ -802,34 +809,6 @@ status_t eng_configure_bes
* - the engine uses 16 bytes, so 8 pixels granularity. */
BESW(VID1_FETCH, (((((moi.hsrcendv >> 16) + 1 + 0x0007) & ~0x0007) * 2) << (20 - 4)));
/* setup horizontal and vertical 'prescaling' for downscaling */
//fixme if needed: width must be even officially...
// BESW(NV10_0SRCSIZE, ((ob->height << 16) | ob->width));
//linux b0-15:
//dwSrcWidth - pVia->swov.overlayRecordV1.dwminifyH;
//en:
//srcWidth1 = srcWidth >> 1;
//if (srcWidth1 <= dstWidth)
// dwminifyH = 2;
//else
//{
// srcWidth1 >>= 1;
// if (srcWidth1 <= dstWidth)
// dwminifyH = 4;
// else
// {
// srcWidth1 >>= 1;
// if (srcWidth1 <= dstWidth)
// dwminifyH = 8;
// else
// {
// srcWidth1 >>= 1;
// if (srcWidth1 <= dstWidth)
// dwminifyH = 16
// else
// to small to handle (limit reached)
//rud +instruct VID1_MINI_CTL register about modified scaling. (V1_X_DIV_2 etc)
// minictrl = 0x00000000;
/* enable horizontal filtering if asked for */
if (ow->flags & B_OVERLAY_HORIZONTAL_FILTERING)
{
@@ -843,15 +822,13 @@ status_t eng_configure_bes
minictrl |= ((1 << 2) | (1 << 0));
LOG(4,("Overlay: using vertical interpolation on scaling\n"));
}
/* and program horizontal and vertical 'prescaling' for downscaling */
BESW(VID1_MINI_CTL, minictrl);
/* setup buffersize */
//fixme for minimize ctrl...
BESW(V1_SOURCE_WH, ((ob->height << 16) | (ob->width - 0)));
BESW(V1_SOURCE_WH, ((ob->height << 16) | (ob->width)));
/* setup buffer source pitch including slopspace (in bytes).
* Note:
* source pitch granularity = yet unknown (fixme) */
/* setup buffer source pitch including slopspace (in bytes) */
BESW(VID1_STRIDE, (ob->width * 2));
/* setup output window position */