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added via accelerant, a copy of skeleton driver yet.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13596 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Rudolf Cornelissen
2005-07-10 17:56:11 +00:00
parent 661c9ec849
commit 552dba5d17
1 changed files with 868 additions and 0 deletions
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src/add-ons/accelerants/via/engine/bes.c
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/* Nvidia TNT and GeForce Back End Scaler functions */
/* Written by Rudolf Cornelissen 05/2002-9/2004 */
#define MODULE_BIT 0x00000200
#include "std.h"
typedef struct move_overlay_info move_overlay_info;
struct move_overlay_info
{
uint32 hcoordv; /* left and right edges of video output window */
uint32 vcoordv; /* top and bottom edges of video output window */
uint32 hsrcstv; /* horizontal source start in source buffer (clipping) */
uint32 v1srcstv; /* vertical source start in source buffer (clipping) */
uint32 a1orgv; /* alternate source clipping via startadress of source buffer */
};
static void eng_bes_calc_move_overlay(move_overlay_info *moi);
static void eng_bes_program_move_overlay(move_overlay_info moi);
/* move the overlay output window in virtualscreens */
/* Note:
* si->dm.h_display_start and si->dm.v_display_start determine where the new
* output window is located! */
void eng_bes_move_overlay()
{
move_overlay_info moi;
/* abort if overlay is not active */
if (!si->overlay.active) return;
eng_bes_calc_move_overlay(&moi);
eng_bes_program_move_overlay(moi);
}
static void eng_bes_calc_move_overlay(move_overlay_info *moi)
{
/* misc used variables */
uint16 temp1, temp2;
/* visible screen window in virtual workspaces */
uint16 crtc_hstart, crtc_vstart, crtc_hend, crtc_vend;
/* do 'overlay follow head' in dualhead modes on dualhead cards */
if (si->ps.secondary_head)
{
switch (si->dm.flags & DUALHEAD_BITS)
{
case DUALHEAD_ON:
case DUALHEAD_SWITCH:
if ((si->overlay.ow.h_start + (si->overlay.ow.width / 2)) <
(si->dm.h_display_start + si->dm.timing.h_display))
eng_bes_to_crtc(si->crtc_switch_mode);
else
eng_bes_to_crtc(!si->crtc_switch_mode);
break;
default:
eng_bes_to_crtc(si->crtc_switch_mode);
break;
}
}
/* the BES does not respect virtual_workspaces, but adheres to CRTC
* constraints only */
crtc_hstart = si->dm.h_display_start;
/* make dualhead stretch and switch mode work while we're at it.. */
if (si->overlay.crtc)
{
crtc_hstart += si->dm.timing.h_display;
}
/* horizontal end is the first position beyond the displayed range on the CRTC */
crtc_hend = crtc_hstart + si->dm.timing.h_display;
crtc_vstart = si->dm.v_display_start;
/* vertical end is the first position beyond the displayed range on the CRTC */
crtc_vend = crtc_vstart + si->dm.timing.v_display;
/****************************************
*** setup all edges of output window ***
****************************************/
/* setup left and right edges of output window */
moi->hcoordv = 0;
/* left edge coordinate of output window, must be inside desktop */
/* clipping on the left side */
if (si->overlay.ow.h_start < crtc_hstart)
{
temp1 = 0;
}
else
{
/* clipping on the right side */
if (si->overlay.ow.h_start >= (crtc_hend - 1))
{
/* width < 2 is not allowed */
temp1 = (crtc_hend - crtc_hstart - 2) & 0x7ff;
}
else
/* no clipping here */
{
temp1 = (si->overlay.ow.h_start - crtc_hstart) & 0x7ff;
}
}
moi->hcoordv |= temp1 << 16;
/* right edge coordinate of output window, must be inside desktop */
/* width < 2 is not allowed */
if (si->overlay.ow.width < 2)
{
temp2 = (temp1 + 1) & 0x7ff;
}
else
{
/* clipping on the right side */
if ((si->overlay.ow.h_start + si->overlay.ow.width - 1) > (crtc_hend - 1))
{
temp2 = (crtc_hend - crtc_hstart - 1) & 0x7ff;
}
else
{
/* clipping on the left side */
if ((si->overlay.ow.h_start + si->overlay.ow.width - 1) < (crtc_hstart + 1))
{
/* width < 2 is not allowed */
temp2 = 1;
}
else
/* no clipping here */
{
temp2 = ((uint16)(si->overlay.ow.h_start + si->overlay.ow.width - crtc_hstart - 1)) & 0x7ff;
}
}
}
moi->hcoordv |= temp2 << 0;
LOG(4,("Overlay: CRTC left-edge output %d, right-edge output %d\n",temp1, temp2));
/* setup top and bottom edges of output window */
moi->vcoordv = 0;
/* top edge coordinate of output window, must be inside desktop */
/* clipping on the top side */
if (si->overlay.ow.v_start < crtc_vstart)
{
temp1 = 0;
}
else
{
/* clipping on the bottom side */
if (si->overlay.ow.v_start >= (crtc_vend - 1))
{
/* height < 2 is not allowed */
temp1 = (crtc_vend - crtc_vstart - 2) & 0x7ff;
}
else
/* no clipping here */
{
temp1 = (si->overlay.ow.v_start - crtc_vstart) & 0x7ff;
}
}
moi->vcoordv |= temp1 << 16;
/* bottom edge coordinate of output window, must be inside desktop */
/* height < 2 is not allowed */
if (si->overlay.ow.height < 2)
{
temp2 = (temp1 + 1) & 0x7ff;
}
else
{
/* clipping on the bottom side */
if ((si->overlay.ow.v_start + si->overlay.ow.height - 1) > (crtc_vend - 1))
{
temp2 = (crtc_vend - crtc_vstart - 1) & 0x7ff;
}
else
{
/* clipping on the top side */
if ((si->overlay.ow.v_start + si->overlay.ow.height - 1) < (crtc_vstart + 1))
{
/* height < 2 is not allowed */
temp2 = 1;
}
else
/* no clipping here */
{
temp2 = ((uint16)(si->overlay.ow.v_start + si->overlay.ow.height - crtc_vstart - 1)) & 0x7ff;
}
}
}
moi->vcoordv |= temp2 << 0;
LOG(4,("Overlay: CRTC top-edge output %d, bottom-edge output %d\n",temp1, temp2));
/*********************************
*** setup horizontal clipping ***
*********************************/
/* Setup horizontal source start: first (sub)pixel contributing to output picture */
/* Note:
* The method is to calculate, based on 1:1 scaling, based on the output window.
* After this is done, include the scaling factor so you get a value based on the input bitmap.
* Then add the left starting position of the bitmap's view (zoom function) to get the final value needed.
* Note: The input bitmaps slopspace is automatically excluded from the calculations this way! */
/* Note also:
* Even if the scaling factor is clamping we instruct the BES to use the correct source start pos.! */
moi->hsrcstv = 0;
/* check for destination horizontal clipping at left side */
if (si->overlay.ow.h_start < crtc_hstart)
{
/* check if entire destination picture is clipping left:
* (2 pixels will be clamped onscreen at least) */
if ((si->overlay.ow.h_start + si->overlay.ow.width - 1) < (crtc_hstart + 1))
{
/* increase 'first contributing pixel' with 'fixed value': (total dest. width - 2) */
moi->hsrcstv += (si->overlay.ow.width - 2);
}
else
{
/* increase 'first contributing pixel' with actual number of dest. clipping pixels */
moi->hsrcstv += (crtc_hstart - si->overlay.ow.h_start);
}
LOG(4,("Overlay: clipping left...\n"));
/* The calculated value is based on scaling = 1x. So we now compensate for scaling.
* Note that this also already takes care of aligning the value to the BES register! */
moi->hsrcstv *= si->overlay.h_ifactor;
}
/* take zoom into account */
moi->hsrcstv += ((uint32)si->overlay.my_ov.h_start) << 16;
/* AND below required by hardware */
moi->hsrcstv &= 0x03fffffc;
LOG(4,("Overlay: first hor. (sub)pixel of input bitmap contributing %f\n", moi->hsrcstv / (float)65536));
/*******************************
*** setup vertical clipping ***
*******************************/
/* calculate inputbitmap origin adress */
moi->a1orgv = (uint32)((vuint32 *)si->overlay.ob.buffer);
moi->a1orgv -= (uint32)((vuint32 *)si->framebuffer);
LOG(4,("Overlay: topleft corner of input bitmap (cardRAM offset) $%08x\n", moi->a1orgv));
/* Setup vertical source start: first (sub)pixel contributing to output picture. */
/* Note:
* The method is to calculate, based on 1:1 scaling, based on the output window.
* 'After' this is done, include the scaling factor so you get a value based on the input bitmap.
* Then add the top starting position of the bitmap's view (zoom function) to get the final value needed. */
/* Note also:
* Even if the scaling factor is clamping we instruct the BES to use the correct source start pos.! */
moi->v1srcstv = 0;
/* check for destination vertical clipping at top side */
if (si->overlay.ow.v_start < crtc_vstart)
{
/* check if entire destination picture is clipping at top:
* (2 pixels will be clamped onscreen at least) */
if ((si->overlay.ow.v_start + si->overlay.ow.height - 1) < (crtc_vstart + 1))
{
/* increase 'number of clipping pixels' with 'fixed value':
* 'total height - 2' of dest. picture in pixels * inverse scaling factor */
moi->v1srcstv = (si->overlay.ow.height - 2) * si->overlay.v_ifactor;
/* on pre-NV10 we need to do clipping in the source
* bitmap because no seperate clipping registers exist... */
if (si->ps.card_arch < NV10A)
moi->a1orgv += ((moi->v1srcstv >> 16) * si->overlay.ob.bytes_per_row);
}
else
{
/* increase 'first contributing pixel' with:
* number of destination picture clipping pixels * inverse scaling factor */
moi->v1srcstv = (crtc_vstart - si->overlay.ow.v_start) * si->overlay.v_ifactor;
/* on pre-NV10 we need to do clipping in the source
* bitmap because no seperate clipping registers exist... */
if (si->ps.card_arch < NV10A)
moi->a1orgv += ((moi->v1srcstv >> 16) * si->overlay.ob.bytes_per_row);
}
LOG(4,("Overlay: clipping at top...\n"));
}
/* take zoom into account */
moi->v1srcstv += (((uint32)si->overlay.my_ov.v_start) << 16);
if (si->ps.card_arch < NV10A)
{
moi->a1orgv += (si->overlay.my_ov.v_start * si->overlay.ob.bytes_per_row);
LOG(4,("Overlay: 'contributing part of buffer' origin is (cardRAM offset) $%08x\n", moi->a1orgv));
}
LOG(4,("Overlay: first vert. (sub)pixel of input bitmap contributing %f\n", moi->v1srcstv / (float)65536));
/* AND below is probably required by hardware. */
/* Buffer A topleft corner of field 1 (origin)(field 1 contains our full frames) */
moi->a1orgv &= 0xfffffff0;
}
static void eng_bes_program_move_overlay(move_overlay_info moi)
{
/*************************************
*** sync to BES (Back End Scaler) ***
*************************************/
/* Done in card hardware:
* double buffered registers + trigger if programming complete feature. */
/**************************************
*** actually program the registers ***
**************************************/
if (si->ps.card_arch < NV10A)
{
/* unknown, but needed (otherwise high-res distortions and only half the frames */
BESW(NV04_OE_STATE, 0x00000000);
/* select buffer 0 as active (b16) */
BESW(NV04_SU_STATE, 0x00000000);
/* unknown (no effect?) */
BESW(NV04_RM_STATE, 0x00000000);
/* setup clipped(!) buffer startadress in RAM */
/* RIVA128 - TNT 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));
/* setup output window position */
BESW(NV04_DSTREF, ((moi.vcoordv & 0xffff0000) | ((moi.hcoordv & 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);
}
else
{
/* >= NV10A */
/* setup buffer origin: GeForce uses subpixel precise clipping on left and top! (12.4 values) */
BESW(NV10_0SRCREF, ((moi.v1srcstv << 4) & 0xffff0000) | ((moi.hsrcstv >> 12) & 0x0000ffff));
/* setup output window position */
BESW(NV10_0DSTREF, ((moi.vcoordv & 0xffff0000) | ((moi.hcoordv & 0xffff0000) >> 16)));
/* setup output window size */
BESW(NV10_0DSTSIZE, (
(((moi.vcoordv & 0x0000ffff) - ((moi.vcoordv & 0xffff0000) >> 16) + 1) << 16) |
((moi.hcoordv & 0x0000ffff) - ((moi.hcoordv & 0xffff0000) >> 16) + 1)
));
/* We only use buffer buffer 0: select it. (0x01 = buffer 0, 0x10 = buffer 1) */
/* This also triggers activation of programmed values (double buffered registers feature) */
BESW(NV10_BUFSEL, 0x00000001);
}
}
status_t eng_bes_to_crtc(bool crtc)
{
if (si->ps.secondary_head)
{
if (crtc)
{
LOG(4,("Overlay: switching overlay to CRTC2\n"));
/* switch overlay engine to CRTC2 */
ENG_RG32(RG32_FUNCSEL) &= ~0x00001000;
ENG_RG32(RG32_2FUNCSEL) |= 0x00001000;
si->overlay.crtc = !si->crtc_switch_mode;
}
else
{
LOG(4,("Overlay: switching overlay to CRTC1\n"));
/* switch overlay engine to CRTC1 */
ENG_RG32(RG32_2FUNCSEL) &= ~0x00001000;
ENG_RG32(RG32_FUNCSEL) |= 0x00001000;
si->overlay.crtc = si->crtc_switch_mode;
}
return B_OK;
}
else
{
return B_ERROR;
}
}
status_t eng_bes_init()
{
if (si->ps.card_arch < NV10A)
{
/* disable overlay ints (b0 = buffer 0, b4 = buffer 1) */
BESW(NV04_INTE, 0x00000000);
/* setup saturation to be 'neutral' */
BESW(NV04_SAT, 0x00000000);
/* setup RGB brightness to be 'neutral' */
BESW(NV04_RED_AMP, 0x00000069);
BESW(NV04_GRN_AMP, 0x0000003e);
BESW(NV04_BLU_AMP, 0x00000089);
/* setup fifo for fetching data */
BESW(NV04_FIFOBURL, 0x00000003);
BESW(NV04_FIFOTHRS, 0x00000038);
/* unknown, but needed (registers only have b0 implemented) */
/* (program both buffers to prevent sync distortions) */
BESW(NV04_0OFFSET, 0x00000000);
BESW(NV04_1OFFSET, 0x00000000);
}
else
{
/* >= NV10A */
/* disable overlay ints (b0 = buffer 0, b4 = buffer 1) */
BESW(NV10_INTE, 0x00000000);
/* shut off GeForce4MX MPEG2 decoder */
BESW(DEC_GENCTRL, 0x00000000);
/* setup BES memory-range mask */
BESW(NV10_0MEMMASK, (si->ps.memory_size - 1));
/* unknown, but needed */
BESW(NV10_0OFFSET, 0x00000000);
/* setup brightness, contrast and saturation to be 'neutral' */
BESW(NV10_0BRICON, ((0x1000 << 16) | 0x1000));
BESW(NV10_0SAT, ((0x0000 << 16) | 0x1000));
}
return B_OK;
}
status_t eng_configure_bes
(const overlay_buffer *ob, const overlay_window *ow, const overlay_view *ov, int offset)
{
/* yuy2 (4:2:2) colorspace calculations */
/* Note:
* in BeOS R5.0.3 and DANO:
* 'ow->offset_xxx' is always 0, so not used;
* 'ow->width' and 'ow->height' are the output window size: does not change
* if window is clipping;
* 'ow->h_start' and 'ow->v_start' are the left-top position of the output
* window. These values can be negative: this means the window is clipping
* at the left or the top of the display, respectively. */
/* 'ov' is the view in the source bitmap, so which part of the bitmap is actually
* displayed on screen. This is used for the 'hardware zoom' function. */
/* output window position and clipping info for source buffer */
move_overlay_info moi;
/* calculated BES register values */
uint32 hiscalv, viscalv;
/* interval representation, used for scaling calculations */
uint16 intrep;
/* inverse scaling factor, used for source positioning */
uint32 ifactor;
/* copy of overlay view which has checked valid values */
overlay_view my_ov;
/**************************************************************************************
*** copy, check and limit if needed the user-specified view into the intput bitmap ***
**************************************************************************************/
my_ov = *ov;
/* check for valid 'coordinates' */
if (my_ov.width == 0) my_ov.width++;
if (my_ov.height == 0) my_ov.height++;
if (my_ov.h_start > ((ob->width - si->overlay.myBufInfo[offset].slopspace) - 1))
my_ov.h_start = ((ob->width - si->overlay.myBufInfo[offset].slopspace) - 1);
if (((my_ov.h_start + my_ov.width) - 1) > ((ob->width - si->overlay.myBufInfo[offset].slopspace) - 1))
my_ov.width = ((((ob->width - si->overlay.myBufInfo[offset].slopspace) - 1) - my_ov.h_start) + 1);
if (my_ov.v_start > (ob->height - 1))
my_ov.v_start = (ob->height - 1);
if (((my_ov.v_start + my_ov.height) - 1) > (ob->height - 1))
my_ov.height = (((ob->height - 1) - my_ov.v_start) + 1);
LOG(4,("Overlay: inputbuffer view (zoom) left %d, top %d, width %d, height %d\n",
my_ov.h_start, my_ov.v_start, my_ov.width, my_ov.height));
/* save for eng_bes_calc_move_overlay() */
si->overlay.ow = *ow;
si->overlay.ob = *ob;
si->overlay.my_ov = my_ov;
/********************************
*** setup horizontal scaling ***
********************************/
LOG(4,("Overlay: total input picture width = %d, height = %d\n",
(ob->width - si->overlay.myBufInfo[offset].slopspace), ob->height));
LOG(4,("Overlay: output picture width = %d, height = %d\n", ow->width, ow->height));
/* determine interval representation value, taking zoom into account */
if (ow->flags & B_OVERLAY_HORIZONTAL_FILTERING)
{
/* horizontal filtering is ON */
if ((my_ov.width == ow->width) | (ow->width < 2))
{
/* no horizontal scaling used, OR destination width < 2 */
intrep = 0;
}
else
{
intrep = 1;
}
}
else
{
/* horizontal filtering is OFF */
if ((ow->width < my_ov.width) & (ow->width >= 2))
{
/* horizontal downscaling used AND destination width >= 2 */
intrep = 1;
}
else
{
intrep = 0;
}
}
LOG(4,("Overlay: horizontal interval representation value is %d\n",intrep));
/* calculate inverse horizontal scaling factor, taking zoom into account */
/* standard scaling formula: */
ifactor = (((uint32)(my_ov.width - intrep)) << 16) / (ow->width - intrep);
/* correct factor to prevent most-right visible 'line' from distorting */
ifactor -= (1 << 2);
hiscalv = ifactor;
/* save for eng_bes_calc_move_overlay() */
si->overlay.h_ifactor = ifactor;
LOG(4,("Overlay: horizontal scaling factor is %f\n", (float)65536 / ifactor));
/* check scaling factor (and modify if needed) to be within scaling limits */
/* all cards have a upscaling limit of 8.0 (see official nVidia specsheets) */
if (hiscalv < 0x00002000)
{
/* (non-inverse) factor too large, set factor to max. valid value */
hiscalv = 0x00002000;
LOG(4,("Overlay: horizontal scaling factor too large, clamping at %f\n", (float)65536 / hiscalv));
}
switch (si->ps.card_arch)
{
case NV04A:
/* Riva128-TNT2 series have a 'downscaling' limit of 1.000489
* (16bit register with 0.11 format value) */
if (hiscalv > 0x0000ffff)
{
/* (non-inverse) factor too small, set factor to min. valid value */
hiscalv = 0x0000ffff;
LOG(4,("Overlay: horizontal scaling factor too small, clamping at %f\n", (float)2048 / (hiscalv >> 5)));
}
break;
case NV30A:
case NV40A:
/* GeForceFX series and up have a downscaling limit of 0.5 (except NV31!) */
if ((hiscalv > (2 << 16)) && (si->ps.card_type != NV31))
{
/* (non-inverse) factor too small, set factor to min. valid value */
hiscalv = (2 << 16);
LOG(4,("Overlay: horizontal scaling factor too small, clamping at %f\n", (float)65536 / hiscalv));
}
/* NV31 (confirmed GeForceFX 5600) has NV20A scaling limits!
* So let it fall through... */
if (si->ps.card_type != NV31) break;
default:
/* the rest has a downscaling limit of 0.125 */
if (hiscalv > (8 << 16))
{
/* (non-inverse) factor too small, set factor to min. valid value */
hiscalv = (8 << 16);
LOG(4,("Overlay: horizontal scaling factor too small, clamping at %f\n", (float)65536 / hiscalv));
}
break;
}
/* AND below is required by hardware */
hiscalv &= 0x001ffffc;
/******************************
*** setup vertical scaling ***
******************************/
/* determine interval representation value, taking zoom into account */
if (ow->flags & B_OVERLAY_VERTICAL_FILTERING)
{
/* vertical filtering is ON */
if ((my_ov.height == ow->height) | (ow->height < 2))
{
/* no vertical scaling used, OR destination height < 2 */
intrep = 0;
}
else
{
intrep = 1;
}
}
else
{
/* vertical filtering is OFF */
if ((ow->height < my_ov.height) & (ow->height >= 2))
{
/* vertical downscaling used AND destination height >= 2 */
intrep = 1;
}
else
{
intrep = 0;
}
}
LOG(4,("Overlay: vertical interval representation value is %d\n",intrep));
/* calculate inverse vertical scaling factor, taking zoom into account */
/* standard scaling formula: */
ifactor = (((uint32)(my_ov.height - intrep)) << 16) / (ow->height - intrep);
/* correct factor to prevent lowest visible line from distorting */
ifactor -= (1 << 2);
LOG(4,("Overlay: vertical scaling factor is %f\n", (float)65536 / ifactor));
/* preserve ifactor for source positioning calculations later on */
viscalv = ifactor;
/* save for eng_bes_calc_move_overlay() */
si->overlay.v_ifactor = ifactor;
/* check scaling factor (and modify if needed) to be within scaling limits */
/* all cards have a upscaling limit of 8.0 (see official nVidia specsheets) */
if (viscalv < 0x00002000)
{
/* (non-inverse) factor too large, set factor to max. valid value */
viscalv = 0x00002000;
LOG(4,("Overlay: vertical scaling factor too large, clamping at %f\n", (float)65536 / viscalv));
}
switch (si->ps.card_arch)
{
case NV04A:
/* Riva128-TNT2 series have a 'downscaling' limit of 1.000489
* (16bit register with 0.11 format value) */
if (viscalv > 0x0000ffff)
{
/* (non-inverse) factor too small, set factor to min. valid value */
viscalv = 0x0000ffff;
LOG(4,("Overlay: vertical scaling factor too small, clamping at %f\n", (float)2048 / (viscalv >> 5)));
}
break;
case NV30A:
case NV40A:
/* GeForceFX series and up have a downscaling limit of 0.5 (except NV31!) */
if ((viscalv > (2 << 16)) && (si->ps.card_type != NV31))
{
/* (non-inverse) factor too small, set factor to min. valid value */
viscalv = (2 << 16);
LOG(4,("Overlay: vertical scaling factor too small, clamping at %f\n", (float)65536 / viscalv));
}
/* NV31 (confirmed GeForceFX 5600) has NV20A scaling limits!
* So let it fall through... */
if (si->ps.card_type != NV31) break;
default:
/* the rest has a downscaling limit of 0.125 */
if (viscalv > (8 << 16))
{
/* (non-inverse) factor too small, set factor to min. valid value */
viscalv = (8 << 16);
LOG(4,("Overlay: vertical scaling factor too small, clamping at %f\n", (float)65536 / viscalv));
}
break;
}
/* AND below is required by hardware */
viscalv &= 0x001ffffc;
/********************************************************************************
*** setup all edges of output window, setup horizontal and vertical clipping ***
********************************************************************************/
eng_bes_calc_move_overlay(&moi);
/*****************************
*** log color keying info ***
*****************************/
LOG(4,("Overlay: key_red %d, key_green %d, key_blue %d, key_alpha %d\n",
ow->red.value, ow->green.value, ow->blue.value, ow->alpha.value));
LOG(4,("Overlay: mask_red %d, mask_green %d, mask_blue %d, mask_alpha %d\n",
ow->red.mask, ow->green.mask, ow->blue.mask, ow->alpha.mask));
/*****************
*** log flags ***
*****************/
LOG(4,("Overlay: ow->flags is $%08x\n",ow->flags));
/* BTW: horizontal and vertical filtering are fixed and turned on for GeForce overlay. */
/*************************************
*** sync to BES (Back End Scaler) ***
*************************************/
/* Done in card hardware:
* double buffered registers + trigger if programming complete feature. */
/**************************************
*** actually program the registers ***
**************************************/
if (si->ps.card_arch < NV10A)
{
/* unknown, but needed (otherwise high-res distortions and only half the frames */
BESW(NV04_OE_STATE, 0x00000000);
/* select buffer 0 as active (b16) */
BESW(NV04_SU_STATE, 0x00000000);
/* unknown (no effect?) */
BESW(NV04_RM_STATE, 0x00000000);
/* setup clipped(!) buffer startadress in RAM */
/* RIVA128 - TNT 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));
/* setup buffer source pitch including slopspace (in bytes).
* Note:
* source pitch granularity = 16 pixels on the RIVA128 - TNT (so pre-NV10) bes */
/* (program both buffers to prevent sync distortions) */
BESW(NV04_0SRCPTCH, (ob->width * 2));
BESW(NV04_1SRCPTCH, (ob->width * 2));
/* setup output window position */
BESW(NV04_DSTREF, ((moi.vcoordv & 0xffff0000) | ((moi.hcoordv & 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)
));
/* setup horizontal and vertical scaling */
BESW(NV04_ISCALVH, (((viscalv << 16) >> 5) | (hiscalv >> 5)));
/* enable vertical filtering (b0) */
BESW(NV04_CTRL_V, 0x00000001);
/* enable horizontal filtering (no effect?) */
BESW(NV04_CTRL_H, 0x00000111);
/* enable BES (b0), enable colorkeying (b4), format yuy2 (b8: 0 = ccir) */
BESW(NV04_GENCTRL, 0x00000111);
/* select buffer 1 as active (b16) */
BESW(NV04_SU_STATE, 0x00010000);
/**************************
*** setup color keying ***
**************************/
/* setup colorkeying */
switch(si->dm.space)
{
case B_RGB15_LITTLE:
BESW(NV04_COLKEY, (
((ow->blue.value & ow->blue.mask) << 0) |
((ow->green.value & ow->green.mask) << 5) |
((ow->red.value & ow->red.mask) << 10) |
((ow->alpha.value & ow->alpha.mask) << 15)
));
break;
case B_RGB16_LITTLE:
BESW(NV04_COLKEY, (
((ow->blue.value & ow->blue.mask) << 0) |
((ow->green.value & ow->green.mask) << 5) |
((ow->red.value & ow->red.mask) << 11)
/* this space has no alpha bits */
));
break;
case B_CMAP8:
case B_RGB32_LITTLE:
default:
BESW(NV04_COLKEY, (
((ow->blue.value & ow->blue.mask) << 0) |
((ow->green.value & ow->green.mask) << 8) |
((ow->red.value & ow->red.mask) << 16) |
((ow->alpha.value & ow->alpha.mask) << 24)
));
break;
}
}
else
{
/* >= NV10A */
/* setup buffer origin: GeForce uses subpixel precise clipping on left and top! (12.4 values) */
BESW(NV10_0SRCREF, ((moi.v1srcstv << 4) & 0xffff0000) | ((moi.hsrcstv >> 12) & 0x0000ffff));
/* setup buffersize */
//fixme if needed: width must be even officially...
BESW(NV10_0SRCSIZE, ((ob->height << 16) | ob->width));
/* setup source pitch including slopspace (in bytes),
* b16: select YUY2 (0 = YV12), b20: use colorkey, b24: no iturbt_709 (do iturbt_601) */
/* Note:
* source pitch granularity = 32 pixels on GeForce cards!! */
BESW(NV10_0SRCPTCH, (((ob->width * 2) & 0x0000ffff) | (1 << 16) | (1 << 20) | (0 << 24)));
/* setup output window position */
BESW(NV10_0DSTREF, ((moi.vcoordv & 0xffff0000) | ((moi.hcoordv & 0xffff0000) >> 16)));
/* setup output window size */
BESW(NV10_0DSTSIZE, (
(((moi.vcoordv & 0x0000ffff) - ((moi.vcoordv & 0xffff0000) >> 16) + 1) << 16) |
((moi.hcoordv & 0x0000ffff) - ((moi.hcoordv & 0xffff0000) >> 16) + 1)
));
/* setup horizontal scaling */
BESW(NV10_0ISCALH, (hiscalv << 4));
/* setup vertical scaling */
BESW(NV10_0ISCALV, (viscalv << 4));
/* setup (unclipped!) buffer startadress in RAM */
BESW(NV10_0BUFADR, moi.a1orgv);
/* enable BES (b0 = 0) */
BESW(NV10_GENCTRL, 0x00000000);
/* We only use buffer buffer 0: select it. (0x01 = buffer 0, 0x10 = buffer 1) */
/* This also triggers activation of programmed values (double buffered registers feature) */
BESW(NV10_BUFSEL, 0x00000001);
/**************************
*** setup color keying ***
**************************/
/* setup colorkeying */
switch(si->dm.space)
{
case B_RGB15_LITTLE:
BESW(NV10_COLKEY, (
((ow->blue.value & ow->blue.mask) << 0) |
((ow->green.value & ow->green.mask) << 5) |
((ow->red.value & ow->red.mask) << 10) |
((ow->alpha.value & ow->alpha.mask) << 15)
));
break;
case B_RGB16_LITTLE:
BESW(NV10_COLKEY, (
((ow->blue.value & ow->blue.mask) << 0) |
((ow->green.value & ow->green.mask) << 5) |
((ow->red.value & ow->red.mask) << 11)
/* this space has no alpha bits */
));
break;
case B_CMAP8:
case B_RGB32_LITTLE:
default:
BESW(NV10_COLKEY, (
((ow->blue.value & ow->blue.mask) << 0) |
((ow->green.value & ow->green.mask) << 8) |
((ow->red.value & ow->red.mask) << 16) |
((ow->alpha.value & ow->alpha.mask) << 24)
));
break;
}
}
/* note that overlay is in use (for eng_bes_move_overlay()) */
si->overlay.active = true;
return B_OK;
}
status_t eng_release_bes()
{
if (si->ps.card_arch < NV10A)
{
/* setup BES control: disable scaler (b0 = 0) */
BESW(NV04_GENCTRL, 0x00000000);
}
else
{
/* setup BES control: disable scaler (b0 = 1) */
BESW(NV10_GENCTRL, 0x00000001);
}
/* note that overlay is not in use (for eng_bes_move_overlay()) */
si->overlay.active = false;
return B_OK;
}