31
#include "renderedge.h"
35
#define INLINE __inline__
40
#define FbIntMult(a,b,t) ( (t) = (a) * (b) + 0x80, ( ( ( (t)>>8 ) + (t) )>>8 ) )
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#define FbIntDiv(a,b) (((CARD16) (a) * 255) / (b))
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#define FbGet8(v,i) ((CARD16) (CARD8) ((v) >> i))
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* There are two ways of handling alpha -- either as a single unified value or
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* a separate value for each component, hence each macro must have two
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* versions. The unified alpha version has a 'U' at the end of the name,
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* the component version has a 'C'. Similarly, functions which deal with
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* this difference will have two versions using the same convention.
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#define FbOverU(x,y,i,a,t) ((t) = FbIntMult(FbGet8(y,i),(a),(t)) + FbGet8(x,i),\
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(CARD32) ((CARD8) ((t) | (0 - ((t) >> 8)))) << (i))
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#define FbOverC(x,y,i,a,t) ((t) = FbIntMult(FbGet8(y,i),FbGet8(a,i),(t)) + FbGet8(x,i),\
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(CARD32) ((CARD8) ((t) | (0 - ((t) >> 8)))) << (i))
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#define FbInU(x,i,a,t) ((CARD32) FbIntMult(FbGet8(x,i),(a),(t)) << (i))
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#define FbInC(x,i,a,t) ((CARD32) FbIntMult(FbGet8(x,i),FbGet8(a,i),(t)) << (i))
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#define FbGen(x,y,i,ax,ay,t,u,v) ((t) = (FbIntMult(FbGet8(y,i),ay,(u)) + \
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FbIntMult(FbGet8(x,i),ax,(v))),\
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(CARD32) ((CARD8) ((t) | \
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(0 - ((t) >> 8)))) << (i))
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#define FbAdd(x,y,i,t) ((t) = FbGet8(x,i) + FbGet8(y,i), \
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(CARD32) ((CARD8) ((t) | (0 - ((t) >> 8)))) << (i))
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#define Alpha(x) ((x) >> 24)
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#define Red(x) (((x) >> 16) & 0xff)
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#define Green(x) (((x) >> 8) & 0xff)
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#define Blue(x) ((x) & 0xff)
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* Returns TRUE if the fbComposeGetSolid can be used to get a single solid
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* color representing every source sampling location of the picture.
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fbCanGetSolid(PicturePtr pict)
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if (pict->pDrawable == NULL ||
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pict->pDrawable->width != 1 ||
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pict->pDrawable->height != 1)
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if (pict->repeat != RepeatNormal)
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switch (pict->format) {
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#define fbComposeGetSolid(pict, bits, fmt) { \
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FbStride __stride__; \
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int __xoff__,__yoff__; \
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fbGetDrawable((pict)->pDrawable,__bits__,__stride__,__bpp__,__xoff__,__yoff__); \
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(bits) = READ((CARD32 *) __bits__); \
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(bits) = Fetch24 ((CARD8 *) __bits__); \
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(bits) = READ((CARD16 *) __bits__); \
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(bits) = cvt0565to0888(bits); \
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(bits) = READ((CARD8 *) __bits__); \
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(bits) = (bits) << 24; \
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(bits) = READ((CARD32 *) __bits__); \
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(bits) = FbLeftStipBits((bits),1) ? 0xff000000 : 0x00000000;\
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/* If necessary, convert RGB <--> BGR. */ \
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if (PICT_FORMAT_TYPE((pict)->format) != PICT_FORMAT_TYPE(fmt)) \
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(bits) = (((bits) & 0xff000000) | \
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(((bits) & 0x00ff0000) >> 16) | \
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(((bits) & 0x0000ff00) >> 0) | \
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(((bits) & 0x000000ff) << 16)); \
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/* manage missing src alpha */ \
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if ((pict)->pFormat->direct.alphaMask == 0) \
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(bits) |= 0xff000000; \
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fbFinishAccess ((pict)->pDrawable); \
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#define fbComposeGetStart(pict,x,y,type,stride,line,mul) {\
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FbStride __stride__; \
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int __xoff__,__yoff__; \
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fbGetDrawable((pict)->pDrawable,__bits__,__stride__,__bpp__,__xoff__,__yoff__); \
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(stride) = __stride__ * sizeof (FbBits) / sizeof (type); \
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(line) = ((type *) __bits__) + (stride) * ((y) + __yoff__) + (mul) * ((x) + __xoff__); \
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#define cvt8888to0565(s) ((((s) >> 3) & 0x001f) | \
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(((s) >> 5) & 0x07e0) | \
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(((s) >> 8) & 0xf800))
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#define cvt0565to0888(s) (((((s) << 3) & 0xf8) | (((s) >> 2) & 0x7)) | \
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((((s) << 5) & 0xfc00) | (((s) >> 1) & 0x300)) | \
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((((s) << 8) & 0xf80000) | (((s) << 3) & 0x70000)))
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#if IMAGE_BYTE_ORDER == MSBFirst
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#define Fetch24(a) ((unsigned long) (a) & 1 ? \
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((READ(a) << 16) | READ((CARD16 *) ((a)+1))) : \
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((READ((CARD16 *) (a)) << 8) | READ((a)+2)))
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#define Store24(a,v) ((unsigned long) (a) & 1 ? \
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(WRITE(a, (CARD8) ((v) >> 16)), \
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WRITE((CARD16 *) ((a)+1), (CARD16) (v))) : \
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(WRITE((CARD16 *) (a), (CARD16) ((v) >> 8)), \
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WRITE((a)+2, (CARD8) (v))))
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#define Fetch24(a) ((unsigned long) (a) & 1 ? \
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(READ(a) | (READ((CARD16 *) ((a)+1)) << 8)) : \
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(READ((CARD16 *) (a)) | (READ((a)+2) << 16)))
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#define Store24(a,v) ((unsigned long) (a) & 1 ? \
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(WRITE(a, (CARD8) (v)), \
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WRITE((CARD16 *) ((a)+1), (CARD16) ((v) >> 8))) : \
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(WRITE((CARD16 *) (a), (CARD16) (v)),\
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WRITE((a)+2, (CARD8) ((v) >> 16))))
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The methods below use some tricks to be able to do two color
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components at the same time.
196
x_c = (x_c * a) / 255
198
#define FbByteMul(x, a) do { \
199
CARD32 t = ((x & 0xff00ff) * a) + 0x800080; \
200
t = (t + ((t >> 8) & 0xff00ff)) >> 8; \
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x = (((x >> 8) & 0xff00ff) * a) + 0x800080; \
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x = (x + ((x >> 8) & 0xff00ff)); \
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x_c = (x_c * a) / 255 + y
212
#define FbByteMulAdd(x, a, y) do { \
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CARD32 t = ((x & 0xff00ff) * a) + 0x800080; \
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t = (t + ((t >> 8) & 0xff00ff)) >> 8; \
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t |= 0x1000100 - ((t >> 8) & 0xff00ff); \
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x = (((x >> 8) & 0xff00ff) * a) + 0x800080; \
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x = (x + ((x >> 8) & 0xff00ff)) >> 8; \
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x += (y >> 8) & 0xff00ff; \
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x |= 0x1000100 - ((x >> 8) & 0xff00ff); \
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x_c = (x_c * a + y_c * b) / 255
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#define FbByteAddMul(x, a, y, b) do { \
235
CARD32 r = (x >> 24) * a + (y >> 24) * b + 0x80; \
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t = (x & 0xff00) * a + (y & 0xff00) * b; \
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t += (t >> 8) + 0x8000; \
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t |= 0x1000100 - ((t >> 8) & 0xff00ff); \
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r = ((x >> 16) & 0xff) * a + ((y >> 16) & 0xff) * b + 0x80; \
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x = (x & 0xff) * a + (y & 0xff) * b + 0x80; \
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x |= 0x1000100 - ((x >> 8) & 0xff00ff); \
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x_c = (x_c * a + y_c *b) / 256
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#define FbByteAddMul_256(x, a, y, b) do { \
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CARD32 t = (x & 0xff00ff) * a + (y & 0xff00ff) * b; \
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x = ((x >> 8) & 0xff00ff) * a + ((y >> 8) & 0xff00ff) * b; \
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x_c = (x_c * a_c) / 255
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#define FbByteMulC(x, a) do { \
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CARD32 r = (x & 0xff) * (a & 0xff); \
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r |= (x & 0xff0000) * ((a >> 16) & 0xff); \
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r = (r + ((r >> 8) & 0xff00ff)) >> 8; \
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t = (x & 0xff) * ((a >> 8) & 0xff); \
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t |= (x & 0xff0000) * (a >> 24); \
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t = t + ((t >> 8) & 0xff00ff); \
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x = r | (t & 0xff00ff00); \
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x_c = (x_c * a) / 255 + y
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#define FbByteMulAddC(x, a, y) do { \
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CARD32 r = (x & 0xff) * (a & 0xff); \
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r |= (x & 0xff0000) * ((a >> 16) & 0xff); \
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r = (r + ((r >> 8) & 0xff00ff)) >> 8; \
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r |= 0x1000100 - ((r >> 8) & 0xff00ff); \
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t = (x & 0xff) * ((a >> 8) & 0xff); \
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t |= (x & 0xff0000) * (a >> 24); \
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t = (t + ((t >> 8) & 0xff00ff)) >> 8; \
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t += (y >> 8) & 0xff00ff; \
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t |= 0x1000100 - ((t >> 8) & 0xff00ff); \
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x_c = (x_c * a_c + y_c * b) / 255
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#define FbByteAddMulC(x, a, y, b) do { \
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CARD32 r = (x >> 24) * (a >> 24) + (y >> 24) * b; \
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r += (r >> 8) + 0x80; \
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t = (x & 0xff00) * ((a >> 8) & 0xff) + (y & 0xff00) * b; \
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t += (t >> 8) + 0x8000; \
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t |= 0x1000100 - ((t >> 8) & 0xff00ff); \
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r = ((x >> 16) & 0xff) * ((a >> 16) & 0xff) + ((y >> 16) & 0xff) * b + 0x80; \
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x = (x & 0xff) * (a & 0xff) + (y & 0xff) * b + 0x80; \
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x |= 0x1000100 - ((x >> 8) & 0xff00ff); \
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x_c = min(x_c + y_c, 255)
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#define FbByteAdd(x, y) do { \
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CARD32 r = (x & 0xff00ff) + (y & 0xff00ff); \
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r |= 0x1000100 - ((r >> 8) & 0xff00ff); \
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t = ((x >> 8) & 0xff00ff) + ((y >> 8) & 0xff00ff); \
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t |= 0x1000100 - ((t >> 8) & 0xff00ff); \
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r |= (t & 0xff00ff) << 8; \
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#define div_255(x) (((x) + 0x80 + (((x) + 0x80) >> 8)) >> 8)
367
#if defined(__i386__) && defined(__GNUC__)
368
#define FASTCALL __attribute__((regparm(3)))
373
typedef struct _FbComposeData {
388
extern _X_EXPORT void
389
fbCompositeRect (const FbComposeData *data, CARD32 *scanline_buffer);
391
typedef FASTCALL void (*CombineMaskU) (CARD32 *src, const CARD32 *mask, int width);
392
typedef FASTCALL void (*CombineFuncU) (CARD32 *dest, const CARD32 *src, int width);
393
typedef FASTCALL void (*CombineFuncC) (CARD32 *dest, CARD32 *src, CARD32 *mask, int width);
395
typedef struct _FbComposeFunctions {
396
CombineFuncU *combineU;
397
CombineFuncC *combineC;
398
CombineMaskU combineMaskU;
399
} FbComposeFunctions;
403
extern _X_EXPORT void
404
fbCompositeGeneral (CARD8 op,
418
32
extern _X_EXPORT void
419
33
fbComposite (CARD8 op,
added
removed
fb/fbpict.h
