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* clutter/cogl/gles/cogl.c (cogl_perspective):

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* clutter/cogl/common/cogl-fixed.c (cogl_fixed_sin)
	(cogl_angle_sin, cogl_angle_tan, cogl_fixed_sqrt): Replaced uses
	of 1 + ~x with just -x which is equivalent and easier to
	understand.
This commit is contained in:
Neil Roberts 2008-11-06 11:42:11 +00:00
parent a41624276c
commit d0ab4856b5
2 changed files with 14 additions and 14 deletions
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26
common/cogl-fixed.c
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@ -368,8 +368,8 @@ cogl_fixed_sin (CoglFixed angle)
/* convert negative angle to positive + sign */
if ((int) angle < 0)
{
sign = 1 + ~sign;
angle = 1 + ~angle;
sign = -sign;
angle = -angle;
}
/* reduce to <0, 2*pi) */
@ -378,7 +378,7 @@ cogl_fixed_sin (CoglFixed angle)
/* reduce to first quadrant and sign */
if (angle > COGL_FIXED_PI)
{
sign = 1 + ~sign;
sign = -sign;
if (angle > COGL_FIXED_PI + COGL_FIXED_PI_2)
{
@ -427,7 +427,7 @@ cogl_fixed_sin (CoglFixed angle)
angle = ((low * d2 + high * d1) / (COGL_SIN_STEP));
if (sign < 0)
angle = (1 + ~angle);
angle = -angle;
return angle;
}
@ -441,8 +441,8 @@ cogl_angle_sin (CoglAngle angle)
/* reduce negative angle to positive + sign */
if (angle < 0)
{
sign = 1 + ~sign;
angle = 1 + ~angle;
sign = -sign;
angle = -angle;
}
/* reduce to <0, 2*pi) */
@ -451,7 +451,7 @@ cogl_angle_sin (CoglAngle angle)
/* reduce to first quadrant and sign */
if (angle > 512)
{
sign = 1 + ~sign;
sign = -sign;
if (angle > 768)
{
@ -476,7 +476,7 @@ cogl_angle_sin (CoglAngle angle)
result = sin_tbl[angle];
if (sign < 0)
result = (1 + ~result);
result = -result;
return result;
}
@ -490,8 +490,8 @@ cogl_angle_tan (CoglAngle angle)
/* reduce negative angle to positive + sign */
if (angle < 0)
{
sign = 1 + ~sign;
angle = 1 + ~angle;
sign = -sign;
angle = -angle;
}
/* reduce to <0, pi) */
@ -500,14 +500,14 @@ cogl_angle_tan (CoglAngle angle)
/* reduce to first quadrant and sign */
if (angle > 256)
{
sign = 1 + ~sign;
sign = -sign;
angle = 512 - angle;
}
result = tan_tbl[angle];
if (sign < 0)
result = (1 + ~result);
result = -result;
return result;
}
@ -655,7 +655,7 @@ cogl_fixed_sqrt (CoglFixed x)
if (sh > 0)
x = x << sh;
else if (sh < 0)
x = (x >> (1 + ~sh));
x = x >> -sh;
return x;
}

2
gles/cogl.c
View File

@ -700,7 +700,7 @@ cogl_perspective (CoglFixed fovy,
M(1,1) = y;
M(2,2) = c;
M(2,3) = d;
M(3,2) = 1 + ~COGL_FIXED_1;
M(3,2) = -COGL_FIXED_1;
GE( cogl_wrap_glMultMatrixx (m) );