Changeset 3527 for trunk/src/gdi32/dibsect.cpp

Timestamp:

May 12, 2000, 9:14:56 PM (25 years ago)

Author:

sandervl

Message:

manual flipping of dibsection images

File:

• trunk/src/gdi32/dibsect.cpp (modified) (10 diffs)

trunk/src/gdi32/dibsect.cpp

@@ -1 @@
-/* $Id: dibsect.cpp,v 1.29 2000-04-23 15:34:10 sandervl Exp $ */
+/* $Id: dibsect.cpp,v 1.30 2000-05-12 19:14:55 sandervl Exp $ */
 
 /*
@@ -38 +38 @@
 //******************************************************************************
 DIBSection::DIBSection(BITMAPINFOHEADER_W *pbmi, char *pColors, DWORD iUsage, DWORD hSection, DWORD dwOffset, DWORD handle, int fFlip)
-                : bmpBits(NULL), pOS2bmp(NULL), next(NULL), bmpBitsRGB565(NULL)
+                : bmpBits(NULL), pOS2bmp(NULL), next(NULL), bmpBitsBuffer(NULL)
 {
   bmpsize = pbmi->biWidth;
@@ -143 +143 @@
                 dibinfo.dsBitfields[1] = (pbmi->biCompression == BI_BITFIELDS) ? *((DWORD *)pColors + 1) : 0x03e0;
                 dibinfo.dsBitfields[2] = (pbmi->biCompression == BI_BITFIELDS) ? *((DWORD *)pColors + 2) : 0x001f;
-
-                //double buffer for rgb 555 dib sections (for conversion)
-                if(dibinfo.dsBitfields[1] == 0x03e0) {
-                        DosAllocMem((PPVOID)&bmpBitsRGB565, bmpsize*pbmi->biHeight, PAG_READ|PAG_WRITE|PAG_COMMIT);
-                }
                 break;
 
@@ -167 +162 @@
         dprintf(("BI_BITFIELDS %x %x %x", dibinfo.dsBitfields[0], dibinfo.dsBitfields[1], dibinfo.dsBitfields[2]));
    }
+   //double buffer for rgb 555 dib sections (for conversion) or flipped sections
+   if(dibinfo.dsBitfields[1] == 0x03e0 || (fFlip & FLIP_VERT)) {
+        DosAllocMem((PPVOID)&bmpBitsBuffer, bmpsize*pbmi->biHeight, PAG_READ|PAG_WRITE|PAG_COMMIT);
+   }
 
    this->handle = handle;
@@ -206 +205 @@
         DosFreeMem(bmpBits);
 
-   if(bmpBitsRGB565)
-        DosFreeMem(bmpBitsRGB565);
+   if(bmpBitsBuffer)
+        DosFreeMem(bmpBitsBuffer);
 
    if(pOS2bmp)
@@ -320 +319 @@
                 dibinfo.dsBitfields[1] = (pbmi->biCompression == BI_BITFIELDS) ? *((DWORD *)pColors + 1) : 0x03e0;
                 dibinfo.dsBitfields[2] = (pbmi->biCompression == BI_BITFIELDS) ? *((DWORD *)pColors + 2) : 0x001f;
-                if(dibinfo.dsBitfields[1] == 0x03e0) {
-                        if(bmpBitsRGB565)
-                                DosFreeMem(bmpBitsRGB565);
-                        DosAllocMem((PPVOID)&bmpBitsRGB565, bmpsize*pbmi->biHeight, PAG_READ|PAG_WRITE|PAG_COMMIT);
-                }
                 break;
 
@@ -345 +339 @@
    }
 
+   //double buffer for rgb 555 dib sections (for conversion) or flipped sections
+   if(dibinfo.dsBitfields[1] == 0x03e0 || (fFlip & FLIP_VERT)) {
+        if(bmpBitsBuffer) {
+                DosFreeMem(bmpBitsBuffer);
+        }
+        DosAllocMem((PPVOID)&bmpBitsBuffer, dibinfo.dsBm.bmWidthBytes*pbmi->biHeight, PAG_READ|PAG_WRITE|PAG_COMMIT);
+   }
+
    dprintf(("DIBSection::SetDIBits (%d,%d), %d %d", pbmi->biWidth, pbmi->biHeight, pbmi->biBitCount, pbmi->biCompression));
    if(palsize)
@@ -417 +419 @@
   }
 
+#if 0
+  nXdest = 0;
+  nYdest = 0;
+  nXsrc  = 0;
+  nXsrc  = 0;
+  nDestWidth = pOS2bmp->cx;
+  nDestHeight = pOS2bmp->cy;
+  nSrcWidth = pOS2bmp->cx;
+  nSrcHeight = pOS2bmp->cy;
+#endif
+
   //win32 coordinates are of the left top, OS/2 expects left bottom
   //source rectangle is non-inclusive (top, right not included)
@@ -443 +456 @@
 
   oldyinversion = GpiQueryYInversion(hps);
-  if(fFlip & FLIP_VERT)
-  {
-        if(oldyinversion != hdcHeight-1) {
-                GpiEnableYInversion(hps, hdcHeight-1);
-                fRestoryYInversion = TRUE;
-        }
-  }
-  else  
   if(oldyinversion != 0) {
         GpiEnableYInversion(hps, 0);
@@ -464 +469 @@
   }
 
+  ULONG os2mode, winmode;
+
+  os2mode = BBO_OR;
+  winmode = GetStretchBltMode(hdcDest);
+  switch(winmode) {
+  case BLACKONWHITE_W:
+        os2mode = BBO_AND;
+        break;
+  case WHITEONBLACK_W:
+  case HALFTONE_W: //TODO:
+        os2mode = BBO_OR;
+        break;
+  case COLORONCOLOR_W:
+        os2mode = BBO_IGNORE;
+        break;
+  }
+  if(fFlip & FLIP_VERT) {
+        //manually reverse bitmap data
+        char *src = bmpBits + (pOS2bmp->cy-1)*dibinfo.dsBm.bmWidthBytes;
+        char *dst = bmpBitsBuffer;
+        for(int i=0;i<pOS2bmp->cy;i++) {
+                memcpy(dst, src, dibinfo.dsBm.bmWidthBytes);
+                dst += dibinfo.dsBm.bmWidthBytes;
+                src -= dibinfo.dsBm.bmWidthBytes;
+        }
+        bmpBits = bmpBitsBuffer;
+  }
+
   //SvL: Optimize this.. (don't convert entire bitmap if only a part will be blitted to the dc)
   if(dibinfo.dsBitfields[1] == 0x3E0) {//RGB 555?
         dprintf(("DIBSection::BitBlt; convert rgb 555 to 565 (old y inv. = %d)", oldyinversion));
 
-        if(bmpBitsRGB565 == NULL)
+        if(bmpBitsBuffer == NULL)
                 DebugInt3();
 
         if(CPUFeatures & CPUID_MMX) {
-                RGB555to565MMX((WORD *)bmpBitsRGB565, (WORD *)bmpBits, pOS2bmp->cbImage/sizeof(WORD));
+                RGB555to565MMX((WORD *)bmpBitsBuffer, (WORD *)bmpBits, pOS2bmp->cbImage/sizeof(WORD));
         }
-        else    RGB555to565((WORD *)bmpBitsRGB565, (WORD *)bmpBits, pOS2bmp->cbImage/sizeof(WORD));
-        rc = GpiDrawBits(hps, bmpBitsRGB565, pOS2bmp, 4, &point[0], ROP_SRCCOPY, BBO_OR);
-  }
-  else  rc = GpiDrawBits(hps, bmpBits, pOS2bmp, 4, &point[0], ROP_SRCCOPY, BBO_OR);
+        else    RGB555to565((WORD *)bmpBitsBuffer, (WORD *)bmpBits, pOS2bmp->cbImage/sizeof(WORD));
+        rc = GpiDrawBits(hps, bmpBitsBuffer, pOS2bmp, 4, &point[0], ROP_SRCCOPY, os2mode);
+  }
+  else  rc = GpiDrawBits(hps, bmpBits, pOS2bmp, 4, &point[0], ROP_SRCCOPY, os2mode);
 
   if(rc == GPI_OK) {