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Diffstat (limited to 'fb/fbstipple.c')
-rw-r--r--fb/fbstipple.c348
1 files changed, 152 insertions, 196 deletions
diff --git a/fb/fbstipple.c b/fb/fbstipple.c
index dc1fd468f..f6c84a212 100644
--- a/fb/fbstipple.c
+++ b/fb/fbstipple.c
@@ -42,29 +42,26 @@
#define LaneCases64(c,a) LaneCases32(c,a); LaneCases32(c+32,a)
#define LaneCases128(c,a) LaneCases64(c,a); LaneCases64(c+64,a)
#define LaneCases256(c,a) LaneCases128(c,a); LaneCases128(c+128,a)
-
+
#if FB_SHIFT == 6
#define LaneCases(a) LaneCases256(0,a)
#endif
-
+
#if FB_SHIFT == 5
#define LaneCases(a) LaneCases16(0,a)
#endif
-
+
/*
* Repeat a transparent stipple across a scanline n times
*/
void
-fbTransparentSpan (FbBits *dst,
- FbBits stip,
- FbBits fgxor,
- int n)
+fbTransparentSpan(FbBits * dst, FbBits stip, FbBits fgxor, int n)
{
- FbStip s;
+ FbStip s;
- s = ((FbStip) (stip ) & 0x01);
- s |= ((FbStip) (stip >> 8) & 0x02);
+ s = ((FbStip) (stip) & 0x01);
+ s |= ((FbStip) (stip >> 8) & 0x02);
s |= ((FbStip) (stip >> 16) & 0x04);
s |= ((FbStip) (stip >> 24) & 0x08);
#if FB_SHIFT > 5
@@ -74,235 +71,194 @@ fbTransparentSpan (FbBits *dst,
s |= ((FbStip) (stip >> 56) & 0x80);
#endif
switch (s) {
- LaneCases(dst);
+ LaneCases(dst);
}
}
void
-fbEvenStipple (FbBits *dst,
- FbStride dstStride,
- int dstX,
- int dstBpp,
-
- int width,
- int height,
-
- FbStip *stip,
- FbStride stipStride,
- int stipHeight,
-
- FbBits fgand,
- FbBits fgxor,
- FbBits bgand,
- FbBits bgxor,
-
- int xRot,
- int yRot)
+fbEvenStipple(FbBits * dst,
+ FbStride dstStride,
+ int dstX,
+ int dstBpp,
+ int width,
+ int height,
+ FbStip * stip,
+ FbStride stipStride,
+ int stipHeight,
+ FbBits fgand,
+ FbBits fgxor, FbBits bgand, FbBits bgxor, int xRot, int yRot)
{
- FbBits startmask, endmask;
- FbBits mask, and, xor;
- int nmiddle, n;
- FbStip *s, *stipEnd, bits;
- int rot, stipX, stipY;
- int pixelsPerDst;
- const FbBits *fbBits;
- Bool transparent;
- int startbyte, endbyte;
-
+ FbBits startmask, endmask;
+ FbBits mask, and, xor;
+ int nmiddle, n;
+ FbStip *s, *stipEnd, bits;
+ int rot, stipX, stipY;
+ int pixelsPerDst;
+ const FbBits *fbBits;
+ Bool transparent;
+ int startbyte, endbyte;
+
/*
* Check for a transparent stipple (stencil)
*/
transparent = FALSE;
- if (dstBpp >= 8 &&
- fgand == 0 && bgand == FB_ALLONES && bgxor == 0)
- transparent = TRUE;
-
+ if (dstBpp >= 8 && fgand == 0 && bgand == FB_ALLONES && bgxor == 0)
+ transparent = TRUE;
+
pixelsPerDst = FB_UNIT / dstBpp;
/*
* Adjust dest pointers
*/
dst += dstX >> FB_SHIFT;
dstX &= FB_MASK;
- FbMaskBitsBytes (dstX, width, fgand == 0 && bgand == 0,
- startmask, startbyte, nmiddle, endmask, endbyte);
-
+ FbMaskBitsBytes(dstX, width, fgand == 0 && bgand == 0,
+ startmask, startbyte, nmiddle, endmask, endbyte);
+
if (startmask)
- dstStride--;
+ dstStride--;
dstStride -= nmiddle;
-
+
xRot *= dstBpp;
/*
* Compute stip start scanline and rotation parameters
*/
stipEnd = stip + stipStride * stipHeight;
- modulus (- yRot, stipHeight, stipY);
+ modulus(-yRot, stipHeight, stipY);
s = stip + stipStride * stipY;
- modulus (- xRot, FB_UNIT, stipX);
+ modulus(-xRot, FB_UNIT, stipX);
rot = stipX;
-
+
/*
* Get pointer to stipple mask array for this depth
*/
/* fbStippleTable covers all valid bpp (4,8,16,32) */
fbBits = fbStippleTable[pixelsPerDst];
-
- while (height--)
- {
- /*
- * Extract stipple bits for this scanline;
- */
- bits = READ(s);
- s += stipStride;
- if (s == stipEnd)
- s = stip;
+
+ while (height--) {
+ /*
+ * Extract stipple bits for this scanline;
+ */
+ bits = READ(s);
+ s += stipStride;
+ if (s == stipEnd)
+ s = stip;
#if FB_UNIT > 32
- if (pixelsPerDst == 16)
- mask = FbStipple16Bits(FbLeftStipBits(bits,16));
- else
+ if (pixelsPerDst == 16)
+ mask = FbStipple16Bits(FbLeftStipBits(bits, 16));
+ else
#endif
- mask = fbBits[FbLeftStipBits(bits,pixelsPerDst)];
- /*
- * Rotate into position and compute reduced rop values
- */
- mask = FbRotLeft(mask, rot);
- and = (fgand & mask) | (bgand & ~mask);
- xor = (fgxor & mask) | (bgxor & ~mask);
-
- if (transparent)
- {
- if (startmask)
- {
- fbTransparentSpan(dst, mask&startmask, fgxor, 1);
- dst++;
- }
- fbTransparentSpan (dst, mask, fgxor, nmiddle);
- dst += nmiddle;
- if (endmask)
- fbTransparentSpan(dst, mask&endmask, fgxor, 1);
- }
- else
- {
- /*
- * Fill scanline
- */
- if (startmask)
- {
- FbDoLeftMaskByteRRop (dst, startbyte, startmask, and, xor);
- dst++;
- }
- n = nmiddle;
- if (!and)
- while (n--)
- WRITE(dst++, xor);
- else
- {
- while (n--)
- {
- WRITE(dst, FbDoRRop (READ(dst), and, xor));
- dst++;
- }
- }
- if (endmask)
- FbDoRightMaskByteRRop(dst, endbyte, endmask, and, xor);
- }
- dst += dstStride;
+ mask = fbBits[FbLeftStipBits(bits, pixelsPerDst)];
+ /*
+ * Rotate into position and compute reduced rop values
+ */
+ mask = FbRotLeft(mask, rot);
+ and = (fgand & mask) | (bgand & ~mask);
+ xor = (fgxor & mask) | (bgxor & ~mask);
+
+ if (transparent) {
+ if (startmask) {
+ fbTransparentSpan(dst, mask & startmask, fgxor, 1);
+ dst++;
+ }
+ fbTransparentSpan(dst, mask, fgxor, nmiddle);
+ dst += nmiddle;
+ if (endmask)
+ fbTransparentSpan(dst, mask & endmask, fgxor, 1);
+ }
+ else {
+ /*
+ * Fill scanline
+ */
+ if (startmask) {
+ FbDoLeftMaskByteRRop(dst, startbyte, startmask, and, xor);
+ dst++;
+ }
+ n = nmiddle;
+ if (!and)
+ while (n--)
+ WRITE(dst++, xor);
+ else {
+ while (n--) {
+ WRITE(dst, FbDoRRop(READ(dst), and, xor));
+ dst++;
+ }
+ }
+ if (endmask)
+ FbDoRightMaskByteRRop(dst, endbyte, endmask, and, xor);
+ }
+ dst += dstStride;
}
}
void
-fbOddStipple (FbBits *dst,
- FbStride dstStride,
- int dstX,
- int dstBpp,
-
- int width,
- int height,
-
- FbStip *stip,
- FbStride stipStride,
- int stipWidth,
- int stipHeight,
-
- FbBits fgand,
- FbBits fgxor,
- FbBits bgand,
- FbBits bgxor,
-
- int xRot,
- int yRot)
+fbOddStipple(FbBits * dst,
+ FbStride dstStride,
+ int dstX,
+ int dstBpp,
+ int width,
+ int height,
+ FbStip * stip,
+ FbStride stipStride,
+ int stipWidth,
+ int stipHeight,
+ FbBits fgand,
+ FbBits fgxor, FbBits bgand, FbBits bgxor, int xRot, int yRot)
{
- int stipX, stipY, sx;
- int widthTmp;
- int h, w;
- int x, y;
+ int stipX, stipY, sx;
+ int widthTmp;
+ int h, w;
+ int x, y;
- modulus (- yRot, stipHeight, stipY);
- modulus (dstX / dstBpp - xRot, stipWidth, stipX);
+ modulus(-yRot, stipHeight, stipY);
+ modulus(dstX / dstBpp - xRot, stipWidth, stipX);
y = 0;
- while (height)
- {
- h = stipHeight - stipY;
- if (h > height)
- h = height;
- height -= h;
- widthTmp = width;
- x = dstX;
- sx = stipX;
- while (widthTmp)
- {
- w = (stipWidth - sx) * dstBpp;
- if (w > widthTmp)
- w = widthTmp;
- widthTmp -= w;
- fbBltOne (stip + stipY * stipStride,
- stipStride,
- sx,
-
- dst + y * dstStride,
- dstStride,
- x,
- dstBpp,
-
- w, h,
-
- fgand, fgxor, bgand, bgxor);
- x += w;
- sx = 0;
- }
- y += h;
- stipY = 0;
+ while (height) {
+ h = stipHeight - stipY;
+ if (h > height)
+ h = height;
+ height -= h;
+ widthTmp = width;
+ x = dstX;
+ sx = stipX;
+ while (widthTmp) {
+ w = (stipWidth - sx) * dstBpp;
+ if (w > widthTmp)
+ w = widthTmp;
+ widthTmp -= w;
+ fbBltOne(stip + stipY * stipStride,
+ stipStride,
+ sx,
+ dst + y * dstStride,
+ dstStride, x, dstBpp, w, h, fgand, fgxor, bgand, bgxor);
+ x += w;
+ sx = 0;
+ }
+ y += h;
+ stipY = 0;
}
}
void
-fbStipple (FbBits *dst,
- FbStride dstStride,
- int dstX,
- int dstBpp,
-
- int width,
- int height,
-
- FbStip *stip,
- FbStride stipStride,
- int stipWidth,
- int stipHeight,
- Bool even,
-
- FbBits fgand,
- FbBits fgxor,
- FbBits bgand,
- FbBits bgxor,
-
- int xRot,
- int yRot)
+fbStipple(FbBits * dst,
+ FbStride dstStride,
+ int dstX,
+ int dstBpp,
+ int width,
+ int height,
+ FbStip * stip,
+ FbStride stipStride,
+ int stipWidth,
+ int stipHeight,
+ Bool even,
+ FbBits fgand,
+ FbBits fgxor, FbBits bgand, FbBits bgxor, int xRot, int yRot)
{
if (even)
- fbEvenStipple (dst, dstStride, dstX, dstBpp, width, height,
- stip, stipStride, stipHeight,
- fgand, fgxor, bgand, bgxor, xRot, yRot);
+ fbEvenStipple(dst, dstStride, dstX, dstBpp, width, height,
+ stip, stipStride, stipHeight,
+ fgand, fgxor, bgand, bgxor, xRot, yRot);
else
- fbOddStipple (dst, dstStride, dstX, dstBpp, width, height,
- stip, stipStride, stipWidth, stipHeight,
- fgand, fgxor, bgand, bgxor, xRot, yRot);
+ fbOddStipple(dst, dstStride, dstX, dstBpp, width, height,
+ stip, stipStride, stipWidth, stipHeight,
+ fgand, fgxor, bgand, bgxor, xRot, yRot);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-26 05:26:37 +0000