From be3817e94d5c31cd15aa4785cb5b0bdefc45141c Mon Sep 17 00:00:00 2001
From: Kaleb Keithley <kaleb@freedesktop.org>
Date: Fri, 14 Nov 2003 16:48:55 +0000
Subject: Initial revision

---
 src/savage_image.c | 194 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 194 insertions(+)
 create mode 100644 src/savage_image.c

(limited to 'src/savage_image.c')

diff --git a/src/savage_image.c b/src/savage_image.c
new file mode 100644
index 0000000..8354622
--- /dev/null
+++ b/src/savage_image.c
@@ -0,0 +1,194 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/savage/savage_image.c,v 1.6 2002/05/14 20:19:52 alanh Exp $ */
+
+#include "savage_driver.h"
+#include "xaarop.h"
+#include "savage_bci.h"
+
+void SavageSubsequentImageWriteRect (
+    ScrnInfoPtr pScrn,
+    int x,
+    int y,
+    int w,
+    int h,
+    int skipleft);
+
+void SavageSetupForImageWrite (
+    ScrnInfoPtr pScrn,
+    int rop,
+    unsigned planemask,
+    int transparency_color,
+    int bpp,
+    int depth);
+
+void SavageWriteBitmapCPUToScreenColorExpand (
+    ScrnInfoPtr pScrn,
+    int x, int y, int w, int h,
+    unsigned char * src,
+    int srcwidth,
+    int skipleft,
+    int fg, int bg,
+    int rop,
+    unsigned int planemask);
+
+#if 0
+void SavageWriteBitmapScreenToScreenColorExpand(
+    ScrnPtr pScrn,
+    int x, 
+    int y,
+    int w,
+    int h,
+    unsigned char * src,
+    int srcwidth,
+    int srcx,
+    int srcy,
+    int bg,
+    int fg,
+    int rop,
+    unsigned int planemask
+)
+{
+    SavagePtr psav = SAVPTR(pScrn);
+    BCI_GET_PTR;
+    unsigned int cmd;
+    unsigned char * bd_offset;
+    unsigned int bd;
+    
+    cmd = BCI_CMD_RECT | BCI_CMD_RECT_XP | BCI_CMD_RECT_YP
+        | BCI_CMD_SEND_COLOR
+        | BCI_CMD_DEST_GBD | BCI_CMD_SRC_SBD_MONO_NEW;
+    cmd |= (bg != -1) ? BCI_CMD_SEND_COLOR : BCI_CMD_SRC_TRANSPARENT;
+    cmd |= s3vAlu[rop];
+
+    bd |= BCI_BD_BW_DISABLE;
+    BCI_BD_SET_BPP(bd, 1);
+    BCI_BD_SET_STRIDE(bd, srcwidth);
+    bd_offset = srcwidth * srcy + (srcx >> 3) + src;
+
+    psav->WaitQueue(psav,10);
+    BCI_SEND(cmd);
+    BCI_SEND((unsigned int)bd_offset);
+    BCI_SEND(bd);
+    BCI_SEND(fg);
+    BCI_SEND((bg != -1) ? bg : 0);
+    BCI_SEND(BCI_X_Y(srcx, srcy));
+    BCI_SEND(BCI_X_Y(x, y));
+    BCI_SEND(BCI_W_H(w, h));
+}
+#endif
+
+void 
+SavageWriteBitmapCPUToScreenColorExpand (
+    ScrnInfoPtr pScrn,
+    int x, int y, int w, int h,
+    unsigned char * src,
+    int srcwidth,
+    int skipleft,
+    int fg, int bg,
+    int rop,
+    unsigned int planemask
+)
+{
+    SavagePtr psav = SAVPTR(pScrn);
+    BCI_GET_PTR;
+    int i, j, count, reset;
+    unsigned int cmd;
+    CARD32 * srcp;
+
+/* We aren't using planemask at all here... */
+
+    if( !srcwidth )
+	return;
+
+    cmd = BCI_CMD_RECT | BCI_CMD_RECT_XP | BCI_CMD_RECT_YP
+        | BCI_CMD_SEND_COLOR | BCI_CMD_CLIP_LR
+        | BCI_CMD_DEST_GBD | BCI_CMD_SRC_MONO;
+    cmd |= XAACopyROP[rop] << 16;
+
+    if( bg == -1 )
+        cmd |= BCI_CMD_SRC_TRANSPARENT;
+
+    BCI_SEND(cmd);
+    BCI_SEND(BCI_CLIP_LR(x+skipleft, x+w-1));
+    BCI_SEND(fg);
+    if( bg != -1 )
+	BCI_SEND(bg);
+
+    /* Bitmaps come in in units of DWORDS, LSBFirst.  This is exactly */
+    /* reversed of what we expect.  */
+
+    count = (w + 31) / 32;
+/*    src += ((srcx & ~31) / 8); */
+
+    /* The BCI region is 128k bytes.  A screen-sized mono bitmap can */
+    /* exceed that. */
+
+    reset = 65536 / count;
+    
+    for (j = 0; j < h; j ++) {
+        BCI_SEND(BCI_X_Y(x, y+j));
+        BCI_SEND(BCI_W_H(w, 1));
+        srcp = (CARD32 *) src;
+        for (i = count; i > 0; srcp ++, i --) {
+            /* We have to invert the bits in each byte. */
+            CARD32 u = *srcp;
+            u = ((u & 0x0f0f0f0f) << 4) | ((u & 0xf0f0f0f0) >> 4);
+            u = ((u & 0x33333333) << 2) | ((u & 0xcccccccc) >> 2);
+            u = ((u & 0x55555555) << 1) | ((u & 0xaaaaaaaa) >> 1);
+            BCI_SEND(u);
+        }
+        src += srcwidth;
+        if( !--reset ) {
+	    BCI_RESET;
+            reset = 65536 / count;
+        }
+    }
+}
+
+void
+SavageSetupForImageWrite(
+    ScrnInfoPtr pScrn,
+    int rop,
+    unsigned planemask,
+    int transparency_color,
+    int bpp,
+    int depth)
+{
+    SavagePtr psav = SAVPTR(pScrn);
+    int cmd;
+
+    cmd = BCI_CMD_RECT | BCI_CMD_RECT_XP | BCI_CMD_RECT_YP
+        | BCI_CMD_CLIP_LR
+        | BCI_CMD_DEST_GBD | BCI_CMD_SRC_COLOR;
+
+    cmd |= XAACopyROP[rop] << 16;
+
+    if( transparency_color != -1 )
+        cmd |= BCI_CMD_SRC_TRANSPARENT;
+
+    psav->SavedBciCmd = cmd;
+    psav->SavedBgColor = transparency_color;
+}
+
+
+void SavageSubsequentImageWriteRect
+(
+    ScrnInfoPtr pScrn,
+    int x,
+    int y,
+    int w,
+    int h,
+    int skipleft)
+{
+    SavagePtr psav = SAVPTR(pScrn);
+    BCI_GET_PTR;
+    int count;
+
+    count = ((w * pScrn->bitsPerPixel + 31) / 32) * h;
+    psav->WaitQueue( psav, count );
+    BCI_SEND(psav->SavedBciCmd);
+    BCI_SEND(BCI_CLIP_LR(x+skipleft, x+w-1));
+    if( psav->SavedBgColor != -1 )
+        BCI_SEND(psav->SavedBgColor);
+    BCI_SEND(BCI_X_Y(x, y));
+    BCI_SEND(BCI_W_H(w, h));
+}
-- 
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