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/*
* $Id$
*
* Copyright © 2004 Damien Ciabrini
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Anders Carlsson not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Anders Carlsson makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* DAMIEN CIABRINI DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL ANDERS CARLSSON BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Header$ */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "mga.h"
#include "g400_common.h"
static PixmapPtr currentSrc;
static PixmapPtr currentMask;
static CARD32 mgaBlendOP[14] = {
/* Clear */
MGA_SRC_ZERO | MGA_DST_ZERO,
/* Src */
MGA_SRC_ONE | MGA_DST_ZERO,
/* Dst */
MGA_SRC_ZERO | MGA_DST_ONE,
/* Over */
MGA_SRC_ALPHA | MGA_DST_ONE_MINUS_SRC_ALPHA,
/* OverReverse */
MGA_SRC_ONE_MINUS_DST_ALPHA | MGA_DST_ONE,
/* In */
MGA_SRC_DST_ALPHA | MGA_DST_ZERO,
/* InReverse */
MGA_SRC_ZERO | MGA_DST_SRC_ALPHA,
/* Out */
MGA_SRC_ONE_MINUS_DST_ALPHA | MGA_DST_ZERO,
/* OutReverse */
MGA_SRC_ZERO | MGA_DST_ONE_MINUS_SRC_ALPHA,
/* Atop */
MGA_SRC_DST_ALPHA | MGA_DST_ONE_MINUS_SRC_ALPHA,
/* AtopReverse */
MGA_SRC_ONE_MINUS_DST_ALPHA | MGA_DST_SRC_ALPHA,
/* Xor */
MGA_SRC_ONE_MINUS_DST_ALPHA | MGA_DST_ONE_MINUS_SRC_ALPHA,
/* Add */
MGA_SRC_ONE | MGA_DST_ONE,
/* Saturate */
MGA_SRC_SRC_ALPHA_SATURATE | MGA_DST_ONE
};
static int MGA_LOG2( int val )
{
int ret = 0;
while (val >> ret)
ret++;
return ((1 << (ret-1)) == val) ? (ret-1) : ret;
}
Bool
mgaPrepareBlend (int op,
PicturePtr pSrcPicture,
PicturePtr pDstPicture,
PixmapPtr pSrc,
PixmapPtr pDst)
{
return mgaPrepareComposite (op, pSrcPicture, NULL, pDstPicture,
pSrc, NULL, pDst);
}
void
mgaBlend (int srcX,
int srcY,
int dstX,
int dstY,
int width,
int height)
{
mgaComposite (srcX, srcY, 0, 0, dstX, dstY, width, height);
}
void
mgaDoneBlend (void)
{
mgaDoneComposite ();
}
static Bool
PrepareSourceTexture (int tmu,
PicturePtr pSrcPicture,
PixmapPtr pSrc)
{
KdScreenPriv (pSrc->drawable.pScreen);
int mem_base=(int)pScreenPriv->screen->memory_base;
int pitch = pSrc->devKind / (pSrc->drawable.bitsPerPixel >> 3);
int w = pSrc->drawable.width;
int h = pSrc->drawable.height;
int w_log2 = MGA_LOG2(w);
int h_log2 = MGA_LOG2(h);
int texctl=MGA_PITCHEXT | ((pitch&0x7ff)<<9) |
MGA_TAKEY | MGA_CLAMPUV | MGA_NOPERSPECTIVE;
int texctl2=MGA_G400_TC2_MAGIC;
if ((w > 2047) || (h > 2047))
MGA_FALLBACK(("Picture too large for composition (%dx%d)\n", w, h));
switch (pSrcPicture->format) {
case PICT_a8r8g8b8:
case PICT_x8r8g8b8:
case PICT_a8b8g8r8:
case PICT_x8b8g8r8:
texctl |= MGA_TW32;
break;
case PICT_r5g6b5:
case PICT_b5g6r5:
texctl |= MGA_TW16;
break;
case PICT_a8:
texctl |= MGA_TW8A;
break;
default:
MGA_FALLBACK(("unsupported Picture format for composition (%x)\n",
pSrcPicture->format));
}
if (tmu == 1) texctl2 |= MGA_TC2_DUALTEX | MGA_TC2_SELECT_TMU1;
mgaWaitAvail (6);
MGA_OUT32 (mmio, MGA_REG_TEXCTL2, texctl2);
MGA_OUT32 (mmio, MGA_REG_TEXCTL, texctl);
/* Source (texture) address + pitch */
MGA_OUT32 (mmio, MGA_REG_TEXORG, ((int)pSrc->devPrivate.ptr - mem_base));
MGA_OUT32 (mmio, MGA_REG_TEXWIDTH, (w-1)<<18 | ((8-w_log2)&63)<<9 | w_log2);
MGA_OUT32 (mmio, MGA_REG_TEXHEIGHT, (h-1)<<18 | ((8-h_log2)&63)<<9 | h_log2);
/* Disable filtering since we aren't doing stretch blit */
MGA_OUT32 (mmio, MGA_REG_TEXFILTER, (0x10<<21) | MGA_MAG_NRST | MGA_MIN_NRST);
if (tmu == 1) {
mgaWaitAvail (1);
MGA_OUT32 (mmio, MGA_REG_TEXCTL2, MGA_G400_TC2_MAGIC | MGA_TC2_DUALTEX);
}
return TRUE;
}
Bool
mgaPrepareComposite (int op,
PicturePtr pSrcPicture,
PicturePtr pMaskPicture,
PicturePtr pDstPicture,
PixmapPtr pSrc,
PixmapPtr pMask,
PixmapPtr pDst)
{
KdScreenPriv (pSrc->drawable.pScreen);
int mem_base=(int)pScreenPriv->screen->memory_base;
int cmd;
/* sometimes mgaPrepareComposite is given the same pointer for Src
* and Mask. PSrcPicture is an unsupported format (x8b8g8r8) whereas
* pMaskPicture is supported (a8r8g8b8). We Choose to render a
* simple blend and using pMaskPicture as the Source.
*/
if (pMask == pSrc) {
pMask=NULL;
pMaskPicture=NULL;
}
mgaWaitIdle();
/* Init MGA (clipping) */
mgaSetup (pSrc->drawable.pScreen, pDst->drawable.bitsPerPixel, 5);
MGA_OUT32 (mmio, MGA_REG_TMR1, 0);
MGA_OUT32 (mmio, MGA_REG_TMR2, 0);
MGA_OUT32 (mmio, MGA_REG_TMR3, 0);
MGA_OUT32 (mmio, MGA_REG_TMR4, 0);
MGA_OUT32 (mmio, MGA_REG_TMR5, 0);
MGA_OUT32 (mmio, MGA_REG_TMR6, 0);
MGA_OUT32 (mmio, MGA_REG_TMR7, 0);
MGA_OUT32 (mmio, MGA_REG_TMR8, 0x10000);
/* Destination flags */
mgaWaitAvail (2);
MGA_OUT32 (mmio, MGA_REG_DSTORG, ((int)pDst->devPrivate.ptr - mem_base));
MGA_OUT32 (mmio, MGA_REG_PITCH,
pDst->devKind / (pDst->drawable.bitsPerPixel >> 3));
/* Source(s) flags */
if (!PrepareSourceTexture (0, pSrcPicture, pSrc)) return FALSE;
if (pMask != NULL)
if (!PrepareSourceTexture (1, pMaskPicture, pMask)) return FALSE;
/* MultiTexture modulation */
mgaWaitAvail (2);
MGA_OUT32 (mmio, MGA_REG_TDUALSTAGE0, MGA_TDS_COLOR_SEL_ARG1);
if (pMask != NULL) {
if (PICT_FORMAT_A (pSrcPicture->format) == 0) {
MGA_OUT32 (mmio, MGA_REG_TDUALSTAGE1,
MGA_TDS_COLOR_ARG2_PREVSTAGE | MGA_TDS_COLOR_SEL_ARG2 |
MGA_TDS_ALPHA_SEL_ARG1);
} else {
MGA_OUT32 (mmio, MGA_REG_TDUALSTAGE1,
MGA_TDS_COLOR_ARG2_PREVSTAGE | MGA_TDS_COLOR_SEL_ARG2 |
MGA_TDS_ALPHA_ARG2_PREVSTAGE | MGA_TDS_ALPHA_SEL_MUL);
}
} else {
MGA_OUT32 (mmio, MGA_REG_TDUALSTAGE1, 0);
}
cmd = MGA_OPCOD_TEXTURE_TRAP | MGA_ATYPE_RSTR | 0x000c0000 |
MGA_DWGCTL_SHIFTZERO | MGA_DWGCTL_SGNZERO | MGA_DWGCTL_ARZERO |
MGA_ATYPE_I;
mgaWaitAvail (2);
MGA_OUT32 (mmio, MGA_REG_DWGCTL, cmd);
MGA_OUT32 (mmio, MGA_REG_ALPHACTRL, MGA_ALPHACHANNEL | mgaBlendOP[op]);
currentSrc=pSrc;
currentMask=pMask;
return TRUE;
}
void
mgaComposite (int srcX,
int srcY,
int maskX,
int maskY,
int dstX,
int dstY,
int width,
int height)
{
int src_w2 = MGA_LOG2 (currentSrc->drawable.width);
int src_h2 = MGA_LOG2 (currentSrc->drawable.height);
/* Source positions can be outside source textures' boundaries.
* We clamp the values here to avoid rendering glitches.
*/
srcX=srcX % currentSrc->drawable.width;
srcY=srcY % currentSrc->drawable.height;
maskX=maskX % currentMask->drawable.width;
maskY=maskY % currentMask->drawable.height;
mgaWaitAvail (4);
/* Start position in the texture */
MGA_OUT32 (mmio, MGA_REG_TMR6, srcX<<(20-src_w2));
MGA_OUT32 (mmio, MGA_REG_TMR7, srcY<<(20-src_h2));
/* Increments (1 since we aren't doing stretch blit) */
MGA_OUT32 (mmio, MGA_REG_TMR0, 1<<(20-src_w2));
MGA_OUT32 (mmio, MGA_REG_TMR3, 1<<(20-src_h2));
if (currentMask != NULL) {
int mask_w2 = MGA_LOG2 (currentMask->drawable.width);
int mask_h2 = MGA_LOG2 (currentMask->drawable.height);
mgaWaitAvail (6);
MGA_OUT32 (mmio, MGA_REG_TEXCTL2,
MGA_G400_TC2_MAGIC | MGA_TC2_DUALTEX | MGA_TC2_SELECT_TMU1);
MGA_OUT32 (mmio, MGA_REG_TMR6, maskX<<(20-mask_w2));
MGA_OUT32 (mmio, MGA_REG_TMR7, maskY<<(20-mask_h2));
MGA_OUT32 (mmio, MGA_REG_TMR0, 1<<(20-mask_w2));
MGA_OUT32 (mmio, MGA_REG_TMR3, 1<<(20-mask_h2));
MGA_OUT32 (mmio, MGA_REG_TEXCTL2, MGA_G400_TC2_MAGIC | MGA_TC2_DUALTEX);
}
/* Destination Bounding Box
* (Boundary Right | Boundary Left, Y dest | Height)
*/
mgaWaitAvail (2);
MGA_OUT32 (mmio, MGA_REG_FXBNDRY,
((dstX + width) << 16) | (dstX & 0xffff));
MGA_OUT32 (mmio, MGA_REG_YDSTLEN | MGA_REG_EXEC,
(dstY << 16) | (height & 0xffff));
}
void
mgaDoneComposite (void)
{
}
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