Cirrus transparent BITBLT (w/o color expand), by Hitoshi Osada.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3101 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 102 insertions, 0 deletions

diff --git a/hw/cirrus_vga_rop.h b/hw/cirrus_vga_rop.h
index c54f1258b3..fbee6edeb1 100644
--- a/hw/cirrus_vga_rop.h
+++ b/hw/cirrus_vga_rop.h
@@ -62,6 +62,108 @@ glue(cirrus_bitblt_rop_bkwd_, ROP_NAME)(CirrusVGAState *s,
     }
 }
 
+static void
+glue(glue(cirrus_bitblt_rop_fwd_transp_, ROP_NAME),_8)(CirrusVGAState *s,
+						       uint8_t *dst,const uint8_t *src,
+						       int dstpitch,int srcpitch,
+						       int bltwidth,int bltheight)
+{
+    int x,y;
+    uint8_t p;
+    dstpitch -= bltwidth;
+    srcpitch -= bltwidth;
+    for (y = 0; y < bltheight; y++) {
+        for (x = 0; x < bltwidth; x++) {
+	    p = *dst;
+            ROP_OP(p, *src);
+	    if (p != s->gr[0x34]) *dst = p;
+            dst++;
+            src++;
+        }
+        dst += dstpitch;
+        src += srcpitch;
+    }
+}
+
+static void
+glue(glue(cirrus_bitblt_rop_bkwd_transp_, ROP_NAME),_8)(CirrusVGAState *s,
+							uint8_t *dst,const uint8_t *src,
+							int dstpitch,int srcpitch,
+							int bltwidth,int bltheight)
+{
+    int x,y;
+    uint8_t p;
+    dstpitch += bltwidth;
+    srcpitch += bltwidth;
+    for (y = 0; y < bltheight; y++) {
+        for (x = 0; x < bltwidth; x++) {
+	    p = *dst;
+            ROP_OP(p, *src);
+	    if (p != s->gr[0x34]) *dst = p;
+            dst--;
+            src--;
+        }
+        dst += dstpitch;
+        src += srcpitch;
+    }
+}
+
+static void
+glue(glue(cirrus_bitblt_rop_fwd_transp_, ROP_NAME),_16)(CirrusVGAState *s,
+							uint8_t *dst,const uint8_t *src,
+							int dstpitch,int srcpitch,
+							int bltwidth,int bltheight)
+{
+    int x,y;
+    uint8_t p1, p2;
+    dstpitch -= bltwidth;
+    srcpitch -= bltwidth;
+    for (y = 0; y < bltheight; y++) {
+        for (x = 0; x < bltwidth; x+=2) {
+	    p1 = *dst;
+	    p2 = *(dst+1);
+            ROP_OP(p1, *src);
+            ROP_OP(p2, *(src+1));
+	    if ((p1 != s->gr[0x34]) || (p2 != s->gr[0x35])) {
+		*dst = p1;
+		*(dst+1) = p2;
+	    }
+            dst+=2;
+            src+=2;
+        }
+        dst += dstpitch;
+        src += srcpitch;
+    }
+}
+
+static void
+glue(glue(cirrus_bitblt_rop_bkwd_transp_, ROP_NAME),_16)(CirrusVGAState *s,
+							 uint8_t *dst,const uint8_t *src,
+							 int dstpitch,int srcpitch,
+							 int bltwidth,int bltheight)
+{
+    int x,y;
+    uint8_t p1, p2;
+    dstpitch += bltwidth;
+    srcpitch += bltwidth;
+    for (y = 0; y < bltheight; y++) {
+        for (x = 0; x < bltwidth; x+=2) {
+	    p1 = *(dst-1);
+	    p2 = *dst;
+            ROP_OP(p1, *(src-1));
+            ROP_OP(p2, *src);
+	    if ((p1 != s->gr[0x34]) || (p2 != s->gr[0x35])) {
+		*(dst-1) = p1;
+		*dst = p2;
+	    }
+            dst-=2;
+            src-=2;
+        }
+        dst += dstpitch;
+        src += srcpitch;
+    }
+}
+
 #define DEPTH 8
 #include "cirrus_vga_rop2.h"