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IABSD.fr/xenocara/xserver/fb/fbpict.h
matthieu
- xserver/fb/fbpict.h
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/* * * Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc. * * Permission to use, copy, modify, distribute, and sell this software and its * documentation for any purpose is hereby granted without fee, provided that * the above copyright notice appear in all copies and that both that * copyright notice and this permission notice appear in supporting * documentation, and that the name of Keith Packard not be used in * advertising or publicity pertaining to distribution of the software without * specific, written prior permission. Keith Packard makes no * representations about the suitability of this software for any purpose. It * is provided "as is" without express or implied warranty. * * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR * PERFORMANCE OF THIS SOFTWARE. */ #ifdef HAVE_DIX_CONFIG_H #include <dix-config.h> #endif #ifndef _FBPICT_H_ #define _FBPICT_H_ #include "renderedge.h" #define FbIntMult(a,b,t) ( (t) = (a) * (b) + 0x80, ( ( ( (t)>>8 ) + (t) )>>8 ) ) #define FbIntDiv(a,b) (((CARD16) (a) * 255) / (b)) #define FbGet8(v,i) ((CARD16) (CARD8) ((v) >> i)) /* * There are two ways of handling alpha -- either as a single unified value or * a separate value for each component, hence each macro must have two * versions. The unified alpha version has a 'U' at the end of the name, * the component version has a 'C'. Similarly, functions which deal with * this difference will have two versions using the same convention. */ #define FbOverU(x,y,i,a,t) ((t) = FbIntMult(FbGet8(y,i),(a),(t)) + FbGet8(x,i),\ (CARD32) ((CARD8) ((t) | (0 - ((t) >> 8)))) << (i)) #define FbOverC(x,y,i,a,t) ((t) = FbIntMult(FbGet8(y,i),FbGet8(a,i),(t)) + FbGet8(x,i),\ (CARD32) ((CARD8) ((t) | (0 - ((t) >> 8)))) << (i)) #define FbInU(x,i,a,t) ((CARD32) FbIntMult(FbGet8(x,i),(a),(t)) << (i)) #define FbInC(x,i,a,t) ((CARD32) FbIntMult(FbGet8(x,i),FbGet8(a,i),(t)) << (i)) #define FbGen(x,y,i,ax,ay,t,u,v) ((t) = (FbIntMult(FbGet8(y,i),ay,(u)) + \ FbIntMult(FbGet8(x,i),ax,(v))),\ (CARD32) ((CARD8) ((t) | \ (0 - ((t) >> 8)))) << (i)) #define FbAdd(x,y,i,t) ((t) = FbGet8(x,i) + FbGet8(y,i), \ (CARD32) ((CARD8) ((t) | (0 - ((t) >> 8)))) << (i)) #define Alpha(x) ((x) >> 24) #define Red(x) (((x) >> 16) & 0xff) #define Green(x) (((x) >> 8) & 0xff) #define Blue(x) ((x) & 0xff) #define fbComposeGetSolid(pict, bits, fmt) { \ FbBits *__bits__; \ FbStride __stride__; \ int __bpp__; \ int __xoff__,__yoff__; \ \ fbGetDrawable((pict)->pDrawable,__bits__,__stride__,__bpp__,__xoff__,__yoff__); \ switch (__bpp__) { \ case 32: \ (bits) = *(CARD32 *) __bits__; \ break; \ case 24: \ (bits) = Fetch24 ((CARD8 *) __bits__); \ break; \ case 16: \ (bits) = *(CARD16 *) __bits__; \ (bits) = cvt0565to8888(bits); \ break; \ default: \ return; \ } \ /* If necessary, convert RGB <--> BGR. */ \ if (PICT_FORMAT_TYPE((pict)->format) != PICT_FORMAT_TYPE(fmt)) \ { \ (bits) = (((bits) & 0xff000000) | \ (((bits) & 0x00ff0000) >> 16) | \ (((bits) & 0x0000ff00) >> 0) | \ (((bits) & 0x000000ff) << 16)); \ } \ /* manage missing src alpha */ \ if ((pict)->pFormat->direct.alphaMask == 0) \ (bits) |= 0xff000000; \ } #define fbComposeGetStart(pict,x,y,type,stride,line,mul) {\ FbBits *__bits__; \ FbStride __stride__; \ int __bpp__; \ int __xoff__,__yoff__; \ \ fbGetDrawable((pict)->pDrawable,__bits__,__stride__,__bpp__,__xoff__,__yoff__); \ (stride) = __stride__ * sizeof (FbBits) / sizeof (type); \ (line) = ((type *) __bits__) + (stride) * ((y) + __yoff__) + (mul) * ((x) + __xoff__); \ } #define cvt8888to0565(s) ((((s) >> 3) & 0x001f) | \ (((s) >> 5) & 0x07e0) | \ (((s) >> 8) & 0xf800)) #define cvt0565to8888(s) (((((s) << 3) & 0xf8) | (((s) >> 2) & 0x7)) | \ ((((s) << 5) & 0xfc00) | (((s) >> 1) & 0x300)) | \ ((((s) << 8) & 0xf80000) | (((s) << 3) & 0x70000))) #if IMAGE_BYTE_ORDER == MSBFirst #define Fetch24(a) ((unsigned long) (a) & 1 ? \ ((*(a) << 16) | *((CARD16 *) ((a)+1))) : \ ((*((CARD16 *) (a)) << 8) | *((a)+2))) #define Store24(a,v) ((unsigned long) (a) & 1 ? \ ((*(a) = (CARD8) ((v) >> 16)), \ (*((CARD16 *) ((a)+1)) = (CARD16) (v))) : \ ((*((CARD16 *) (a)) = (CARD16) ((v) >> 8)), \ (*((a)+2) = (CARD8) (v)))) #else #define Fetch24(a) ((unsigned long) (a) & 1 ? \ ((*(a)) | (*((CARD16 *) ((a)+1)) << 8)) : \ ((*((CARD16 *) (a))) | (*((a)+2) << 16))) #define Store24(a,v) ((unsigned long) (a) & 1 ? \ ((*(a) = (CARD8) (v)), \ (*((CARD16 *) ((a)+1)) = (CARD16) ((v) >> 8))) : \ ((*((CARD16 *) (a)) = (CARD16) (v)),\ (*((a)+2) = (CARD8) ((v) >> 16)))) #endif /* The methods below use some tricks to be able to do two color components at the same time. */ /* x_c = (x_c * a) / 255 */ #define FbByteMul(x, a) do { \ CARD32 t = ((x & 0xff00ff) * a) + 0x800080; \ t = (t + ((t >> 8) & 0xff00ff)) >> 8; \ t &= 0xff00ff; \ \ x = (((x >> 8) & 0xff00ff) * a) + 0x800080; \ x = (x + ((x >> 8) & 0xff00ff)); \ x &= 0xff00ff00; \ x += t; \ } while (0) /* x_c = (x_c * a) / 255 + y */ #define FbByteMulAdd(x, a, y) do { \ CARD32 t = ((x & 0xff00ff) * a) + 0x800080; \ t = (t + ((t >> 8) & 0xff00ff)) >> 8; \ t &= 0xff00ff; \ t += y & 0xff00ff; \ t |= 0x1000100 - ((t >> 8) & 0xff00ff); \ t &= 0xff00ff; \ \ x = (((x >> 8) & 0xff00ff) * a) + 0x800080; \ x = (x + ((x >> 8) & 0xff00ff)) >> 8; \ x &= 0xff00ff; \ x += (y >> 8) & 0xff00ff; \ x |= 0x1000100 - ((x >> 8) & 0xff00ff); \ x &= 0xff00ff; \ x <<= 8; \ x += t; \ } while (0) /* x_c = (x_c * a + y_c * b) / 255 */ #define FbByteAddMul(x, a, y, b) do { \ CARD32 t; \ CARD32 r = (x >> 24) * a + (y >> 24) * b + 0x80; \ r += (r >> 8); \ r >>= 8; \ \ t = (x & 0xff00) * a + (y & 0xff00) * b; \ t += (t >> 8) + 0x8000; \ t >>= 16; \ \ t |= r << 16; \ t |= 0x1000100 - ((t >> 8) & 0xff00ff); \ t &= 0xff00ff; \ t <<= 8; \ \ r = ((x >> 16) & 0xff) * a + ((y >> 16) & 0xff) * b + 0x80; \ r += (r >> 8); \ r >>= 8; \ \ x = (x & 0xff) * a + (y & 0xff) * b + 0x80; \ x += (x >> 8); \ x >>= 8; \ x |= r << 16; \ x |= 0x1000100 - ((x >> 8) & 0xff00ff); \ x &= 0xff00ff; \ x |= t; \ } while (0) /* x_c = (x_c * a + y_c *b) / 256 */ #define FbByteAddMul_256(x, a, y, b) do { \ CARD32 t = (x & 0xff00ff) * a + (y & 0xff00ff) * b; \ t >>= 8; \ t &= 0xff00ff; \ \ x = ((x >> 8) & 0xff00ff) * a + ((y >> 8) & 0xff00ff) * b; \ x &= 0xff00ff00; \ x += t; \ } while (0) /* x_c = (x_c * a_c) / 255 */ #define FbByteMulC(x, a) do { \ CARD32 t; \ CARD32 r = (x & 0xff) * (a & 0xff); \ r |= (x & 0xff0000) * ((a >> 16) & 0xff); \ r += 0x800080; \ r = (r + ((r >> 8) & 0xff00ff)) >> 8; \ r &= 0xff00ff; \ \ x >>= 8; \ t = (x & 0xff) * ((a >> 8) & 0xff); \ t |= (x & 0xff0000) * (a >> 24); \ t += 0x800080; \ t = t + ((t >> 8) & 0xff00ff); \ x = r | (t & 0xff00ff00); \ \ } while (0) /* x_c = (x_c * a) / 255 + y */ #define FbByteMulAddC(x, a, y) do { \ CARD32 t; \ CARD32 r = (x & 0xff) * (a & 0xff); \ r |= (x & 0xff0000) * ((a >> 16) & 0xff); \ r += 0x800080; \ r = (r + ((r >> 8) & 0xff00ff)) >> 8; \ r &= 0xff00ff; \ r += y & 0xff00ff; \ r |= 0x1000100 - ((r >> 8) & 0xff00ff); \ r &= 0xff00ff; \ \ x >>= 8; \ t = (x & 0xff) * ((a >> 8) & 0xff); \ t |= (x & 0xff0000) * (a >> 24); \ t += 0x800080; \ t = (t + ((t >> 8) & 0xff00ff)) >> 8; \ t &= 0xff00ff; \ t += (y >> 8) & 0xff00ff; \ t |= 0x1000100 - ((t >> 8) & 0xff00ff); \ t &= 0xff00ff; \ x = r | (t << 8); \ } while (0) /* x_c = (x_c * a_c + y_c * b) / 255 */ #define FbByteAddMulC(x, a, y, b) do { \ CARD32 t; \ CARD32 r = (x >> 24) * (a >> 24) + (y >> 24) * b; \ r += (r >> 8) + 0x80; \ r >>= 8; \ \ t = (x & 0xff00) * ((a >> 8) & 0xff) + (y & 0xff00) * b; \ t += (t >> 8) + 0x8000; \ t >>= 16; \ \ t |= r << 16; \ t |= 0x1000100 - ((t >> 8) & 0xff00ff); \ t &= 0xff00ff; \ t <<= 8; \ \ r = ((x >> 16) & 0xff) * ((a >> 16) & 0xff) + ((y >> 16) & 0xff) * b + 0x80; \ r += (r >> 8); \ r >>= 8; \ \ x = (x & 0xff) * (a & 0xff) + (y & 0xff) * b + 0x80; \ x += (x >> 8); \ x >>= 8; \ x |= r << 16; \ x |= 0x1000100 - ((x >> 8) & 0xff00ff); \ x &= 0xff00ff; \ x |= t; \ } while (0) /* x_c = min(x_c + y_c, 255) */ #define FbByteAdd(x, y) do { \ CARD32 t; \ CARD32 r = (x & 0xff00ff) + (y & 0xff00ff); \ r |= 0x1000100 - ((r >> 8) & 0xff00ff); \ r &= 0xff00ff; \ \ t = ((x >> 8) & 0xff00ff) + ((y >> 8) & 0xff00ff); \ t |= 0x1000100 - ((t >> 8) & 0xff00ff); \ r |= (t & 0xff00ff) << 8; \ x = r; \ } while (0) #define div_255(x) (((x) + 0x80 + (((x) + 0x80) >> 8)) >> 8) #if defined(__i386__) && defined(__GNUC__) #define FASTCALL __attribute__((regparm(3))) #else #define FASTCALL #endif #if defined(__GNUC__) #define INLINE __inline__ #else #define INLINE #endif typedef struct _FbComposeData { CARD8 op; PicturePtr src; PicturePtr mask; PicturePtr dest; INT16 xSrc; INT16 ySrc; INT16 xMask; INT16 yMask; INT16 xDest; INT16 yDest; CARD16 width; CARD16 height; } FbComposeData; typedef FASTCALL void (*CombineMaskU) (CARD32 *src, const CARD32 *mask, int width); typedef FASTCALL void (*CombineFuncU) (CARD32 *dest, const CARD32 *src, int width); typedef FASTCALL void (*CombineFuncC) (CARD32 *dest, CARD32 *src, CARD32 *mask, int width); typedef struct _FbComposeFunctions { CombineFuncU *combineU; CombineFuncC *combineC; CombineMaskU combineMaskU; } FbComposeFunctions; /* fbcompose.c */ void fbCompositeGeneral (CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height); /* fbedge.c */ void fbRasterizeEdges (FbBits *buf, int bpp, int width, int stride, RenderEdge *l, RenderEdge *r, xFixed t, xFixed b); /* fbpict.c */ CARD32 fbOver (CARD32 x, CARD32 y); CARD32 fbOver24 (CARD32 x, CARD32 y); CARD32 fbIn (CARD32 x, CARD8 y); void fbCompositeSolidMask_nx8x8888 (CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height); void fbCompositeSolidMask_nx8x0888 (CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height); void fbCompositeSolidMask_nx8888x8888C (CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height); void fbCompositeSolidMask_nx8x0565 (CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height); void fbCompositeSolidMask_nx8888x0565C (CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height); void fbCompositeSrc_8888x8888 (CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height); void fbCompositeSrc_8888x0888 (CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height); void fbCompositeSrc_8888x0565 (CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height); void fbCompositeSrc_0565x0565 (CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height); void fbCompositeSrcAdd_8000x8000 (CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height); void fbCompositeSrcAdd_8888x8888 (CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height); void fbCompositeSrcAdd_1000x1000 (CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height); void fbCompositeSolidMask_nx1xn (CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height); void fbComposite (CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height); /* fbtrap.c */ void fbAddTraps (PicturePtr pPicture, INT16 xOff, INT16 yOff, int ntrap, xTrap *traps); void fbRasterizeTrapezoid (PicturePtr alpha, xTrapezoid *trap, int x_off, int y_off); void fbAddTriangles (PicturePtr pPicture, INT16 xOff, INT16 yOff, int ntri, xTriangle *tris); #endif /* _FBPICT_H_ */