2 * PROJECT: Win32 subsystem
3 * LICENSE: See COPYING in the top level directory
4 * FILE: subsystems/win32/win32k/dib/dib32bpp.c
5 * PURPOSE: Device Independant Bitmap functions, 32bpp
6 * PROGRAMMERS: Jason Filby
17 DIB_32BPP_PutPixel(SURFOBJ
*SurfObj
, LONG x
, LONG y
, ULONG c
)
19 PBYTE byteaddr
= (PBYTE
)SurfObj
->pvScan0
+ y
* SurfObj
->lDelta
;
20 PDWORD addr
= (PDWORD
)byteaddr
+ x
;
26 DIB_32BPP_GetPixel(SURFOBJ
*SurfObj
, LONG x
, LONG y
)
28 PBYTE byteaddr
= (PBYTE
)SurfObj
->pvScan0
+ y
* SurfObj
->lDelta
;
29 PDWORD addr
= (PDWORD
)byteaddr
+ x
;
31 return (ULONG
)(*addr
);
35 DIB_32BPP_VLine(SURFOBJ
*SurfObj
, LONG x
, LONG y1
, LONG y2
, ULONG c
)
37 PBYTE byteaddr
= (PBYTE
)SurfObj
->pvScan0
+ y1
* SurfObj
->lDelta
;
38 PDWORD addr
= (PDWORD
)byteaddr
+ x
;
39 LONG lDelta
= SurfObj
->lDelta
>> 2; // >> 2 == / sizeof(DWORD)
41 byteaddr
= (PBYTE
)addr
;
50 DIB_32BPP_BitBltSrcCopy(PBLTINFO BltInfo
)
52 LONG i
, j
, sx
, sy
, xColor
, f1
;
53 PBYTE SourceBits
, DestBits
, SourceLine
, DestLine
;
54 PBYTE SourceBits_4BPP
, SourceLine_4BPP
;
55 PDWORD Source32
, Dest32
;
57 DestBits
= (PBYTE
)BltInfo
->DestSurface
->pvScan0
58 + (BltInfo
->DestRect
.top
* BltInfo
->DestSurface
->lDelta
)
59 + 4 * BltInfo
->DestRect
.left
;
61 switch (BltInfo
->SourceSurface
->iBitmapFormat
)
65 sx
= BltInfo
->SourcePoint
.x
;
66 sy
= BltInfo
->SourcePoint
.y
;
68 for (j
=BltInfo
->DestRect
.top
; j
<BltInfo
->DestRect
.bottom
; j
++)
70 sx
= BltInfo
->SourcePoint
.x
;
71 for (i
=BltInfo
->DestRect
.left
; i
<BltInfo
->DestRect
.right
; i
++)
73 if (DIB_1BPP_GetPixel(BltInfo
->SourceSurface
, sx
, sy
) == 0)
75 DIB_32BPP_PutPixel(BltInfo
->DestSurface
, i
, j
, XLATEOBJ_iXlate(BltInfo
->XlateSourceToDest
, 0));
77 DIB_32BPP_PutPixel(BltInfo
->DestSurface
, i
, j
, XLATEOBJ_iXlate(BltInfo
->XlateSourceToDest
, 1));
86 SourceBits_4BPP
= (PBYTE
)BltInfo
->SourceSurface
->pvScan0
87 + (BltInfo
->SourcePoint
.y
* BltInfo
->SourceSurface
->lDelta
)
88 + (BltInfo
->SourcePoint
.x
>> 1);
90 for (j
=BltInfo
->DestRect
.top
; j
<BltInfo
->DestRect
.bottom
; j
++)
92 SourceLine_4BPP
= SourceBits_4BPP
;
93 sx
= BltInfo
->SourcePoint
.x
;
96 for (i
=BltInfo
->DestRect
.left
; i
<BltInfo
->DestRect
.right
; i
++)
98 xColor
= XLATEOBJ_iXlate(BltInfo
->XlateSourceToDest
,
99 (*SourceLine_4BPP
& altnotmask
[f1
]) >> (4 * (1 - f1
)));
100 DIB_32BPP_PutPixel(BltInfo
->DestSurface
, i
, j
, xColor
);
110 SourceBits_4BPP
+= BltInfo
->SourceSurface
->lDelta
;
115 SourceLine
= (PBYTE
)BltInfo
->SourceSurface
->pvScan0
+ (BltInfo
->SourcePoint
.y
* BltInfo
->SourceSurface
->lDelta
) + BltInfo
->SourcePoint
.x
;
118 for (j
= BltInfo
->DestRect
.top
; j
< BltInfo
->DestRect
.bottom
; j
++)
120 SourceBits
= SourceLine
;
123 for (i
= BltInfo
->DestRect
.left
; i
< BltInfo
->DestRect
.right
; i
++)
125 xColor
= *SourceBits
;
126 *((PDWORD
) DestBits
) = (DWORD
)XLATEOBJ_iXlate(BltInfo
->XlateSourceToDest
, xColor
);
131 SourceLine
+= BltInfo
->SourceSurface
->lDelta
;
132 DestLine
+= BltInfo
->DestSurface
->lDelta
;
137 SourceLine
= (PBYTE
)BltInfo
->SourceSurface
->pvScan0
+ (BltInfo
->SourcePoint
.y
* BltInfo
->SourceSurface
->lDelta
) + 2 * BltInfo
->SourcePoint
.x
;
140 for (j
= BltInfo
->DestRect
.top
; j
< BltInfo
->DestRect
.bottom
; j
++)
142 SourceBits
= SourceLine
;
145 for (i
= BltInfo
->DestRect
.left
; i
< BltInfo
->DestRect
.right
; i
++)
147 xColor
= *((PWORD
) SourceBits
);
148 *((PDWORD
) DestBits
) = (DWORD
)XLATEOBJ_iXlate(BltInfo
->XlateSourceToDest
, xColor
);
153 SourceLine
+= BltInfo
->SourceSurface
->lDelta
;
154 DestLine
+= BltInfo
->DestSurface
->lDelta
;
159 SourceLine
= (PBYTE
)BltInfo
->SourceSurface
->pvScan0
160 + (BltInfo
->SourcePoint
.y
* BltInfo
->SourceSurface
->lDelta
)
161 + 3 * BltInfo
->SourcePoint
.x
;
164 for (j
= BltInfo
->DestRect
.top
; j
< BltInfo
->DestRect
.bottom
; j
++)
166 SourceBits
= SourceLine
;
169 for (i
= BltInfo
->DestRect
.left
; i
< BltInfo
->DestRect
.right
; i
++)
171 xColor
= (*(SourceBits
+ 2) << 0x10) +
172 (*(SourceBits
+ 1) << 0x08) +
174 *((PDWORD
)DestBits
) = (DWORD
)XLATEOBJ_iXlate(BltInfo
->XlateSourceToDest
, xColor
);
179 SourceLine
+= BltInfo
->SourceSurface
->lDelta
;
180 DestLine
+= BltInfo
->DestSurface
->lDelta
;
185 if (NULL
== BltInfo
->XlateSourceToDest
||
186 0 != (BltInfo
->XlateSourceToDest
->flXlate
& XO_TRIVIAL
))
188 if (BltInfo
->DestRect
.top
< BltInfo
->SourcePoint
.y
)
190 SourceBits
= (PBYTE
)BltInfo
->SourceSurface
->pvScan0
+ (BltInfo
->SourcePoint
.y
* BltInfo
->SourceSurface
->lDelta
) + 4 * BltInfo
->SourcePoint
.x
;
191 for (j
= BltInfo
->DestRect
.top
; j
< BltInfo
->DestRect
.bottom
; j
++)
193 RtlMoveMemory(DestBits
, SourceBits
, 4 * (BltInfo
->DestRect
.right
- BltInfo
->DestRect
.left
));
194 SourceBits
+= BltInfo
->SourceSurface
->lDelta
;
195 DestBits
+= BltInfo
->DestSurface
->lDelta
;
200 SourceBits
= (PBYTE
)BltInfo
->SourceSurface
->pvScan0
201 + ((BltInfo
->SourcePoint
.y
202 + BltInfo
->DestRect
.bottom
203 - BltInfo
->DestRect
.top
- 1) * BltInfo
->SourceSurface
->lDelta
)
204 + 4 * BltInfo
->SourcePoint
.x
;
205 DestBits
= (PBYTE
)BltInfo
->DestSurface
->pvScan0
+ ((BltInfo
->DestRect
.bottom
- 1) * BltInfo
->DestSurface
->lDelta
) + 4 * BltInfo
->DestRect
.left
;
206 for (j
= BltInfo
->DestRect
.bottom
- 1; BltInfo
->DestRect
.top
<= j
; j
--)
208 RtlMoveMemory(DestBits
, SourceBits
, 4 * (BltInfo
->DestRect
.right
- BltInfo
->DestRect
.left
));
209 SourceBits
-= BltInfo
->SourceSurface
->lDelta
;
210 DestBits
-= BltInfo
->DestSurface
->lDelta
;
216 if (BltInfo
->DestRect
.top
< BltInfo
->SourcePoint
.y
)
218 SourceBits
= ((PBYTE
)BltInfo
->SourceSurface
->pvScan0
+ (BltInfo
->SourcePoint
.y
* BltInfo
->SourceSurface
->lDelta
) + 4 * BltInfo
->SourcePoint
.x
);
219 for (j
= BltInfo
->DestRect
.top
; j
< BltInfo
->DestRect
.bottom
; j
++)
221 if (BltInfo
->DestRect
.left
< BltInfo
->SourcePoint
.x
)
223 Dest32
= (DWORD
*) DestBits
;
224 Source32
= (DWORD
*) SourceBits
;
225 for (i
= BltInfo
->DestRect
.left
; i
< BltInfo
->DestRect
.right
; i
++)
227 *Dest32
++ = XLATEOBJ_iXlate(BltInfo
->XlateSourceToDest
, *Source32
++);
232 Dest32
= (DWORD
*) DestBits
+ (BltInfo
->DestRect
.right
- BltInfo
->DestRect
.left
- 1);
233 Source32
= (DWORD
*) SourceBits
+ (BltInfo
->DestRect
.right
- BltInfo
->DestRect
.left
- 1);
234 for (i
= BltInfo
->DestRect
.right
- 1; BltInfo
->DestRect
.left
<= i
; i
--)
236 *Dest32
-- = XLATEOBJ_iXlate(BltInfo
->XlateSourceToDest
, *Source32
--);
239 SourceBits
+= BltInfo
->SourceSurface
->lDelta
;
240 DestBits
+= BltInfo
->DestSurface
->lDelta
;
245 SourceBits
= (PBYTE
)BltInfo
->SourceSurface
->pvScan0
+ ((BltInfo
->SourcePoint
.y
+ BltInfo
->DestRect
.bottom
- BltInfo
->DestRect
.top
- 1) * BltInfo
->SourceSurface
->lDelta
) + 4 * BltInfo
->SourcePoint
.x
;
246 DestBits
= (PBYTE
)BltInfo
->DestSurface
->pvScan0
+ ((BltInfo
->DestRect
.bottom
- 1) * BltInfo
->DestSurface
->lDelta
) + 4 * BltInfo
->DestRect
.left
;
247 for (j
= BltInfo
->DestRect
.bottom
- 1; BltInfo
->DestRect
.top
<= j
; j
--)
249 if (BltInfo
->DestRect
.left
< BltInfo
->SourcePoint
.x
)
251 Dest32
= (DWORD
*) DestBits
;
252 Source32
= (DWORD
*) SourceBits
;
253 for (i
= BltInfo
->DestRect
.left
; i
< BltInfo
->DestRect
.right
; i
++)
255 *Dest32
++ = XLATEOBJ_iXlate(BltInfo
->XlateSourceToDest
, *Source32
++);
260 Dest32
= (DWORD
*) DestBits
+ (BltInfo
->DestRect
.right
- BltInfo
->DestRect
.left
- 1);
261 Source32
= (DWORD
*) SourceBits
+ (BltInfo
->DestRect
.right
- BltInfo
->DestRect
.left
- 1);
262 for (i
= BltInfo
->DestRect
.right
- 1; BltInfo
->DestRect
.left
<= i
; i
--)
264 *Dest32
-- = XLATEOBJ_iXlate(BltInfo
->XlateSourceToDest
, *Source32
--);
267 SourceBits
-= BltInfo
->SourceSurface
->lDelta
;
268 DestBits
-= BltInfo
->DestSurface
->lDelta
;
275 DPRINT1("DIB_32BPP_Bitblt: Unhandled Source BPP: %u\n", BitsPerFormat(BltInfo
->SourceSurface
->iBitmapFormat
));
283 DIB_32BPP_TransparentBlt(SURFOBJ
*DestSurf
, SURFOBJ
*SourceSurf
,
284 RECTL
* DestRect
, RECTL
*SourceRect
,
285 XLATEOBJ
*ColorTranslation
, ULONG iTransColor
)
287 ULONG X
, Y
, SourceX
, SourceY
= 0, Source
= 0, wd
;
295 DstHeight
= DestRect
->bottom
- DestRect
->top
;
296 DstWidth
= DestRect
->right
- DestRect
->left
;
297 SrcHeight
= SourceRect
->bottom
- SourceRect
->top
;
298 SrcWidth
= SourceRect
->right
- SourceRect
->left
;
300 DestBits
= (ULONG
*)((PBYTE
)DestSurf
->pvScan0
+
301 (DestRect
->left
<< 2) +
302 DestRect
->top
* DestSurf
->lDelta
);
303 wd
= DestSurf
->lDelta
- ((DestRect
->right
- DestRect
->left
) << 2);
305 for (Y
= DestRect
->top
; Y
< DestRect
->bottom
; Y
++)
307 SourceY
= SourceRect
->top
+(Y
- DestRect
->top
) * SrcHeight
/ DstHeight
;
308 for (X
= DestRect
->left
; X
< DestRect
->right
; X
++, DestBits
++)
310 SourceX
= SourceRect
->left
+(X
- DestRect
->left
) * SrcWidth
/ DstWidth
;
311 if (SourceX
>= 0 && SourceY
>= 0 &&
312 SourceSurf
->sizlBitmap
.cx
> SourceX
&& SourceSurf
->sizlBitmap
.cy
> SourceY
)
314 Source
= DIB_GetSourceIndex(SourceSurf
, SourceX
, SourceY
);
315 if (Source
!= iTransColor
)
317 *DestBits
= XLATEOBJ_iXlate(ColorTranslation
, Source
);
322 DestBits
= (ULONG
*)((ULONG_PTR
)DestBits
+ wd
);
338 static __inline UCHAR
341 return (val
> 255) ? 255 : val
;
345 DIB_32BPP_AlphaBlend(SURFOBJ
* Dest
, SURFOBJ
* Source
, RECTL
* DestRect
,
346 RECTL
* SourceRect
, CLIPOBJ
* ClipRegion
,
347 XLATEOBJ
* ColorTranslation
, BLENDOBJ
* BlendObj
)
349 INT Rows
, Cols
, SrcX
, SrcY
;
352 BLENDFUNCTION BlendFunc
;
353 register NICEPIXEL32 DstPixel
, SrcPixel
;
356 DPRINT("DIB_32BPP_AlphaBlend: srcRect: (%d,%d)-(%d,%d), dstRect: (%d,%d)-(%d,%d)\n",
357 SourceRect
->left
, SourceRect
->top
, SourceRect
->right
, SourceRect
->bottom
,
358 DestRect
->left
, DestRect
->top
, DestRect
->right
, DestRect
->bottom
);
360 ASSERT(DestRect
->bottom
- DestRect
->top
== SourceRect
->bottom
- SourceRect
->top
&&
361 DestRect
->right
- DestRect
->left
== SourceRect
->right
- SourceRect
->left
);
363 BlendFunc
= BlendObj
->BlendFunction
;
364 if (BlendFunc
.BlendOp
!= AC_SRC_OVER
)
366 DPRINT1("BlendOp != AC_SRC_OVER\n");
369 if (BlendFunc
.BlendFlags
!= 0)
371 DPRINT1("BlendFlags != 0\n");
374 if ((BlendFunc
.AlphaFormat
& ~AC_SRC_ALPHA
) != 0)
376 DPRINT1("Unsupported AlphaFormat (0x%x)\n", BlendFunc
.AlphaFormat
);
379 if ((BlendFunc
.AlphaFormat
& AC_SRC_ALPHA
) != 0 &&
380 BitsPerFormat(Source
->iBitmapFormat
) != 32)
382 DPRINT1("Source bitmap must be 32bpp when AC_SRC_ALPHA is set\n");
386 Dst
= (PULONG
)((ULONG_PTR
)Dest
->pvScan0
+ (DestRect
->top
* Dest
->lDelta
) +
387 (DestRect
->left
<< 2));
388 DstDelta
= Dest
->lDelta
- ((DestRect
->right
- DestRect
->left
) << 2);
389 SrcBpp
= BitsPerFormat(Source
->iBitmapFormat
);
391 Rows
= DestRect
->bottom
- DestRect
->top
;
392 SrcY
= SourceRect
->top
;
395 Cols
= DestRect
->right
- DestRect
->left
;
396 SrcX
= SourceRect
->left
;
399 SrcPixel
.ul
= DIB_GetSource(Source
, SrcX
++, SrcY
, ColorTranslation
);
400 SrcPixel
.col
.red
= SrcPixel
.col
.red
* BlendFunc
.SourceConstantAlpha
/ 255;
401 SrcPixel
.col
.green
= SrcPixel
.col
.green
* BlendFunc
.SourceConstantAlpha
/ 255;
402 SrcPixel
.col
.blue
= SrcPixel
.col
.blue
* BlendFunc
.SourceConstantAlpha
/ 255;
403 SrcPixel
.col
.alpha
= (SrcBpp
== 32) ? (SrcPixel
.col
.alpha
* BlendFunc
.SourceConstantAlpha
/ 255) : BlendFunc
.SourceConstantAlpha
;
405 Alpha
= ((BlendFunc
.AlphaFormat
& AC_SRC_ALPHA
) != 0) ?
406 SrcPixel
.col
.alpha
: BlendFunc
.SourceConstantAlpha
;
409 DstPixel
.col
.red
= Clamp8(DstPixel
.col
.red
* (255 - Alpha
) / 255 + SrcPixel
.col
.red
);
410 DstPixel
.col
.green
= Clamp8(DstPixel
.col
.green
* (255 - Alpha
) / 255 + SrcPixel
.col
.green
);
411 DstPixel
.col
.blue
= Clamp8(DstPixel
.col
.blue
* (255 - Alpha
) / 255 + SrcPixel
.col
.blue
);
412 DstPixel
.col
.alpha
= Clamp8(DstPixel
.col
.alpha
* (255 - Alpha
) / 255 + SrcPixel
.col
.alpha
);
413 *Dst
++ = DstPixel
.ul
;
415 Dst
= (PULONG
)((ULONG_PTR
)Dst
+ DstDelta
);