1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
4  * Copyright (c) 1991-1997 Søren Schmidt
36 #define min(x, y)	(((x) < (y)) ? (x) : (y))  argument
45 WriteVerticalLine(VGLBitmap *dst, int x, int y, int width, byte *line)  in WriteVerticalLine()  argument
47   int bwidth, i, pos, last, planepos, start_offset, end_offset, offset;  in WriteVerticalLine()  local
53   switch (dst->Type) {  in WriteVerticalLine()
67     last = 8 - start_offset;  in WriteVerticalLine()
79     planepos--;  in WriteVerticalLine()
81       word <<= (8 - end_offset);  in WriteVerticalLine()
94       pos = VGLAdpInfo.va_line_width*y + x/8;  in WriteVerticalLine()
95       if (dst->Type == VIDBUF4) {  in WriteVerticalLine()
97 	  VGLPlane[i][planepos] |= dst->Bitmap[pos+planepos] & mask[end_offset];  in WriteVerticalLine()
99 	  VGLPlane[i][0] |= dst->Bitmap[pos] & ~mask[start_offset];  in WriteVerticalLine()
100 	bcopy(&VGLPlane[i][0], dst->Bitmap + pos, bwidth);  in WriteVerticalLine()
103 	  offset = VGLSetSegment(pos + planepos);  in WriteVerticalLine()
104 	  VGLPlane[i][planepos] |= dst->Bitmap[offset] & mask[end_offset];  in WriteVerticalLine()
106 	offset = VGLSetSegment(pos);  in WriteVerticalLine()
108 	  VGLPlane[i][0] |= dst->Bitmap[offset] & ~mask[start_offset];  in WriteVerticalLine()
110 	  len = min(VGLAdpInfo.va_window_size - offset, last);  in WriteVerticalLine()
111 	  bcopy(&VGLPlane[i][bwidth - last], dst->Bitmap + offset, len);  in WriteVerticalLine()
113 	  last -= len;  in WriteVerticalLine()
116 	  offset = VGLSetSegment(pos);  in WriteVerticalLine()
122     address = dst->Bitmap + VGLAdpInfo.va_line_width * y + x/4;  in WriteVerticalLine()
136     width = width * dst->PixelBytes;  in WriteVerticalLine()
137     pos = (dst->VXsize * y + x) * dst->PixelBytes;  in WriteVerticalLine()
139       offset = VGLSetSegment(pos);  in WriteVerticalLine()
140       i = min(VGLAdpInfo.va_window_size - offset, width);  in WriteVerticalLine()
141       bcopy(line, dst->Bitmap + offset, i);  in WriteVerticalLine()
144       width -= i;  in WriteVerticalLine()
152     address = dst->Bitmap + (dst->VXsize * y + x) * dst->PixelBytes;  in WriteVerticalLine()
153     bcopy(line, address, width * dst->PixelBytes);  in WriteVerticalLine()
169     hight = -hight;  in __VGLBitmapCopy()
173       buffer = alloca(width*src->PixelBytes);  in __VGLBitmapCopy()
175   if (srcx>src->VXsize || srcy>src->VYsize  in __VGLBitmapCopy()
176 	|| dstx>dst->VXsize || dsty>dst->VYsize)  in __VGLBitmapCopy()
177     return -1;    in __VGLBitmapCopy()
179     width=width+srcx; dstx-=srcx; srcx=0;      in __VGLBitmapCopy()
182     hight=hight+srcy; dsty-=srcy; srcy=0;   in __VGLBitmapCopy()
185     width=width+dstx; srcx-=dstx; dstx=0;  in __VGLBitmapCopy()
188     hight=hight+dsty; srcy-=dsty; dsty=0;  in __VGLBitmapCopy()
190   if (srcx+width > src->VXsize)  in __VGLBitmapCopy()
191      width=src->VXsize-srcx;  in __VGLBitmapCopy()
192   if (srcy+hight > src->VYsize)  in __VGLBitmapCopy()
193      hight=src->VYsize-srcy;  in __VGLBitmapCopy()
194   if (dstx+width > dst->VXsize)  in __VGLBitmapCopy()
195      width=dst->VXsize-dstx;  in __VGLBitmapCopy()
196   if (dsty+hight > dst->VYsize)  in __VGLBitmapCopy()
197      hight=dst->VYsize-dsty;  in __VGLBitmapCopy()
199      return -1;  in __VGLBitmapCopy()
203   if (src->Bitmap == dst->Bitmap && srcy < dsty) {  in __VGLBitmapCopy()
204     yend = srcy - 1;  in __VGLBitmapCopy()
205     yextra = hight - 1;  in __VGLBitmapCopy()
206     ystep = -1;  in __VGLBitmapCopy()
210     p = src->Bitmap+(srcline*src->VXsize+srcx)*dst->PixelBytes;  in __VGLBitmapCopy()
212       bcopy(p, buffer, width*src->PixelBytes);  in __VGLBitmapCopy()
228     return -1;  in VGLBitmapCopy()
231   if (src->Type != MEMBUF)  in VGLBitmapCopy()
232     return -1;		/* invalid */  in VGLBitmapCopy()
243   } else if (dst->Type != MEMBUF)  in VGLBitmapCopy()
244     return -1;		/* invalid */  in VGLBitmapCopy()
245   error = __VGLBitmapCopy(src, srcx, srcy, dst, dstx, dsty, width, -hight);  in VGLBitmapCopy()
263   object->Type = type;  in VGLBitmapCreate()
264   object->Xsize = xsize;  in VGLBitmapCreate()
265   object->Ysize = ysize;  in VGLBitmapCreate()
266   object->VXsize = xsize;  in VGLBitmapCreate()
267   object->VYsize = ysize;  in VGLBitmapCreate()
268   object->Xorigin = 0;  in VGLBitmapCreate()
269   object->Yorigin = 0;  in VGLBitmapCreate()
270   object->Bitmap = bits;  in VGLBitmapCreate()
271   object->PixelBytes = VGLDisplay->PixelBytes;  in VGLBitmapCreate()
278   if (object->Bitmap)  in VGLBitmapDestroy()
279     free(object->Bitmap);  in VGLBitmapDestroy()
286   object->Bitmap = malloc(object->VXsize*object->VYsize*object->PixelBytes);  in VGLBitmapAllocateBits()
287   if (object->Bitmap == NULL)  in VGLBitmapAllocateBits()
288     return -1;  in VGLBitmapAllocateBits()
298   size = src->VXsize * src->VYsize;  in VGLBitmapCvt()
299   srcpb = src->PixelBytes;  in VGLBitmapCvt()
302   pb = dst->PixelBytes;  in VGLBitmapCvt()
304     bcopy(src->Bitmap, dst->Bitmap, size * pb);  in VGLBitmapCvt()
310     color = VGLrgb332ToNative(src->Bitmap[srcpos]);  in VGLBitmapCvt()
312         dst->Bitmap[dstpos++] = color;  in VGLBitmapCvt()