mirror of
https://github.com/brl/mutter.git
synced 2024-09-21 06:56:12 -04:00
012b169a73
Most of the patches updated weren't failing but there were a number of hunk offsets when applying so it tidies that up. The change in mtx_transform.0.patch has been moved to clutter-actor.c.0.patch.
307 lines
9.0 KiB
Diff
307 lines
9.0 KiB
Diff
diff --git a/clutter/clutter-alpha.c b/clutter/clutter-alpha.c
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index 60ef0d3..dda0f6c 100644
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--- a/clutter/clutter-alpha.c
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+++ b/clutter/clutter-alpha.c
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@@ -697,6 +697,11 @@ clutter_ramp_func (ClutterAlpha *alpha,
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}
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}
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+#if 0
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+/*
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+ * The following three functions are left in place for reference
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+ * purposes.
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+ */
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static guint32
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sincx1024_func (ClutterAlpha *alpha,
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float angle,
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@@ -716,7 +721,7 @@ sincx1024_func (ClutterAlpha *alpha,
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x -= (512 * 512 / angle);
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- sine = ((sinf (x * (G_PI/180.0)) + offset) / 2)
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+ sine = ((cogl_angle_sin (x) + offset) / 2)
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* CLUTTER_ALPHA_MAX_ALPHA;
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sine = sine >> COGL_FIXED_Q;
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@@ -724,11 +729,6 @@ sincx1024_func (ClutterAlpha *alpha,
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return sine;
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}
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-#if 0
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-/*
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- * The following two functions are left in place for reference
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- * purposes.
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- */
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static guint32
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sincx_func (ClutterAlpha *alpha,
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ClutterFixed angle,
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@@ -747,7 +747,7 @@ sincx_func (ClutterAlpha *alpha,
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x = CLUTTER_FIXED_MUL (x, CFX_PI)
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- CLUTTER_FIXED_DIV (CFX_PI, angle);
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- sine = (sinf (x) + offset) / 2;
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+ sine = (cogl_angle_sin (x) + offset) / 2;
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CLUTTER_NOTE (ALPHA, "sine: %2f\n", CLUTTER_FIXED_TO_DOUBLE (sine));
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@@ -806,9 +806,28 @@ guint32
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clutter_sine_func (ClutterAlpha *alpha,
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gpointer dummy)
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{
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-#if 0
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+#if 1
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+ ClutterTimeline *timeline;
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+ gint current_frame_num, n_frames;
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+ float radians, sine;
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+
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+ timeline = clutter_alpha_get_timeline (alpha);
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+
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+ current_frame_num = clutter_timeline_get_current_frame (timeline);
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+ n_frames = clutter_timeline_get_n_frames (timeline);
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+
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+ radians = ((float)current_frame_num / n_frames) * (2.0 * G_PI);
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+ sine = sinf (radians);
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+
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+ /* shift from range [-1, 1] -> [0, 1] */
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+ sine = (sine + 1.0) / 2.0;
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+
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+ CLUTTER_NOTE (ALPHA, "sine: %2f\n", sine);
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+
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+ return sine * CLUTTER_ALPHA_MAX_ALPHA;
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+#elif 0
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return sinc_func (alpha, 2.0, 1.0);
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-#else
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+#elif 0
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/* 2.0 above represents full circle */
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return sincx1024_func (alpha, 1024, 1.0);
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#endif
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@@ -842,18 +861,17 @@ clutter_sine_inc_func (ClutterAlpha *alpha,
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ClutterTimeline * timeline;
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gint frame;
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gint n_frames;
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- float x;
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- ClutterFixed sine;
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+ float radians;
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+ float sine;
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timeline = clutter_alpha_get_timeline (alpha);
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frame = clutter_timeline_get_current_frame (timeline);
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n_frames = clutter_timeline_get_n_frames (timeline);
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- x = 256 * frame / n_frames;
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-
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- sine = sinf (x * (G_PI/180.0)) * CLUTTER_ALPHA_MAX_ALPHA;
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+ radians = ((float)frame / n_frames) * (G_PI / 2);
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+ sine = sinf (radians);
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- return ((guint32) sine) >> COGL_FIXED_Q;
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+ return (guint32) (sine * CLUTTER_ALPHA_MAX_ALPHA);
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}
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/**
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@@ -884,18 +902,17 @@ clutter_sine_dec_func (ClutterAlpha *alpha,
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ClutterTimeline * timeline;
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gint frame;
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gint n_frames;
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- float x;
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- ClutterFixed sine;
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+ float radians;
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+ float sine;
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timeline = clutter_alpha_get_timeline (alpha);
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frame = clutter_timeline_get_current_frame (timeline);
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n_frames = clutter_timeline_get_n_frames (timeline);
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- x = 256 * frame / n_frames + 256;
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-
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- sine = sinf (x * (G_PI/180.0)) * CLUTTER_ALPHA_MAX_ALPHA;
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+ radians = ((float)frame / n_frames) * (G_PI / 2);
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+ sine = sinf (radians + (G_PI / 2));
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- return ((guint32) sine) >> COGL_FIXED_Q;
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+ return (guint32) (sine * CLUTTER_ALPHA_MAX_ALPHA);
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}
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/**
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@@ -926,18 +943,17 @@ clutter_sine_half_func (ClutterAlpha *alpha,
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ClutterTimeline *timeline;
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gint frame;
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gint n_frames;
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- float x;
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- ClutterFixed sine;
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+ float radians;
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+ float sine;
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timeline = clutter_alpha_get_timeline (alpha);
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frame = clutter_timeline_get_current_frame (timeline);
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n_frames = clutter_timeline_get_n_frames (timeline);
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- x = 512 * frame / n_frames;
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+ radians = ((float)frame / n_frames) * G_PI;
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+ sine = sinf (radians);
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- sine = sinf (x * (G_PI/180.0)) * CLUTTER_ALPHA_MAX_ALPHA;
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-
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- return ((guint32) sine) >> COGL_FIXED_Q;
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+ return (guint32) (sine * CLUTTER_ALPHA_MAX_ALPHA);
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}
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/**
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@@ -962,19 +978,20 @@ clutter_sine_in_func (ClutterAlpha *alpha,
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ClutterTimeline *timeline;
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gint frame;
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gint n_frames;
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- float x;
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- ClutterFixed sine;
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+ float radians;
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+ float sine;
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timeline = clutter_alpha_get_timeline (alpha);
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frame = clutter_timeline_get_current_frame (timeline);
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n_frames = clutter_timeline_get_n_frames (timeline);
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- /* XXX- if we use 768 we overflow */
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- x = 256 * frame / n_frames + 767;
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+ radians = ((float)frame / n_frames) * (G_PI / 2);
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+ sine = sinf (radians - (G_PI / 2));
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- sine = (sinf (x * (G_PI/180.0)) + 1) * CLUTTER_ALPHA_MAX_ALPHA;
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+ /* shift from range [-1, 0] -> [0, 1] */
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+ sine = sine + 1.0;
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- return ((guint32) sine) >> COGL_FIXED_Q;
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+ return (guint32) (sine * CLUTTER_ALPHA_MAX_ALPHA);
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}
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/**
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@@ -998,18 +1015,17 @@ clutter_sine_out_func (ClutterAlpha *alpha,
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ClutterTimeline *timeline;
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gint frame;
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gint n_frames;
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- float x;
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- ClutterFixed sine;
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+ float radians;
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+ float sine;
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timeline = clutter_alpha_get_timeline (alpha);
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frame = clutter_timeline_get_current_frame (timeline);
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n_frames = clutter_timeline_get_n_frames (timeline);
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- x = 256 * frame / n_frames;
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-
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- sine = sinf (x * (G_PI/180.0)) * CLUTTER_ALPHA_MAX_ALPHA;
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+ radians = ((float)frame / n_frames) * (G_PI / 2);
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+ sine = sinf (radians);
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- return ((guint32) sine) >> COGL_FIXED_Q;
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+ return (guint32) (sine * CLUTTER_ALPHA_MAX_ALPHA);
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}
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/**
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@@ -1034,18 +1050,20 @@ clutter_sine_in_out_func (ClutterAlpha *alpha,
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ClutterTimeline *timeline;
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gint frame;
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gint n_frames;
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- float x;
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- ClutterFixed sine;
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+ float radians;
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+ float sine;
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timeline = clutter_alpha_get_timeline (alpha);
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frame = clutter_timeline_get_current_frame (timeline);
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n_frames = clutter_timeline_get_n_frames (timeline);
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- x = -256 * frame / n_frames + 256;
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+ radians = ((float)frame / n_frames) * G_PI;
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+ sine = sinf (radians - (G_PI / 2));
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- sine = (sinf (x * (G_PI/180.0)) + 1) / 2 * CLUTTER_ALPHA_MAX_ALPHA;
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+ /* shift from range [-1, 1] -> [0, 1] */
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+ sine = (sine + 1.0) / 2.0;
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- return ((guint32) sine) >> COGL_FIXED_Q;
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+ return (guint32) (sine * CLUTTER_ALPHA_MAX_ALPHA);
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}
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/**
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@@ -1113,30 +1131,23 @@ clutter_smoothstep_inc_func (ClutterAlpha *alpha,
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ClutterTimeline *timeline;
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gint frame;
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gint n_frames;
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- guint32 r;
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- guint32 x;
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+ float r;
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+ float x;
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/*
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* The smoothstep function uses f(x) = -2x^3 + 3x^2 where x is from <0,1>,
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- * and precission is critical -- we use 8.24 fixed format for this operation.
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- * The earlier operations involve division, which we cannot do in 8.24 for
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- * numbers in <0,1> we use ClutterFixed.
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+ * and precission is critical.
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*/
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timeline = clutter_alpha_get_timeline (alpha);
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frame = clutter_timeline_get_current_frame (timeline);
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n_frames = clutter_timeline_get_n_frames (timeline);
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- /*
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- * Convert x to 8.24 for next step.
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- */
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- x = CLUTTER_FIXED_DIV (frame, n_frames) << 8;
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+ x = (float)frame / n_frames;
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/*
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* f(x) = -2x^3 + 3x^2
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- *
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- * Convert result to ClutterFixed to avoid overflow in next step.
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*/
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- r = ((x >> 12) * (x >> 12) * 3 - (x >> 15) * (x >> 16) * (x >> 16)) >> 8;
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+ r = -2 * x * x * x + 3 * x * x;
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return (r * CLUTTER_ALPHA_MAX_ALPHA);
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}
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@@ -1204,9 +1215,9 @@ clutter_exp_inc_func (ClutterAlpha *alpha,
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*
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* (2^x_alpha_max) - 1 == CLUTTER_ALPHA_MAX_ALPHA
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*/
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-#if CLUTTER_ALPHA_MAX_ALPHA != 0xffff
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-#error Adjust x_alpha_max to match CLUTTER_ALPHA_MAX_ALPHA
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-#endif
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+ /* XXX: If this fails:
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+ * Adjust x_alpha_max to match CLUTTER_ALPHA_MAX_ALPHA */
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+ g_assert (CLUTTER_ALPHA_MAX_ALPHA == 65535.0);
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timeline = clutter_alpha_get_timeline (alpha);
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frame = clutter_timeline_get_current_frame (timeline);
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@@ -1214,7 +1225,7 @@ clutter_exp_inc_func (ClutterAlpha *alpha,
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x = x_alpha_max * frame / n_frames;
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- result = CLAMP (pow2f (x) - 1, 0, CLUTTER_ALPHA_MAX_ALPHA);
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+ result = CLAMP (powf (2, x) - 1, 0, CLUTTER_ALPHA_MAX_ALPHA);
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return result;
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}
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@@ -1255,9 +1266,9 @@ clutter_exp_dec_func (ClutterAlpha *alpha,
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*
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* (2^x_alpha_max) - 1 == CLUTTER_ALPHA_MAX_ALPHA
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*/
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-#if CLUTTER_ALPHA_MAX_ALPHA != 0xffff
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-#error Adjust x_alpha_max to match CLUTTER_ALPHA_MAX_ALPHA
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-#endif
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+ /* XXX: If this fails:
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+ * Adjust x_alpha_max to match CLUTTER_ALPHA_MAX_ALPHA */
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+ g_assert (CLUTTER_ALPHA_MAX_ALPHA == 65535.0);
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timeline = clutter_alpha_get_timeline (alpha);
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frame = clutter_timeline_get_current_frame (timeline);
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@@ -1265,7 +1276,7 @@ clutter_exp_dec_func (ClutterAlpha *alpha,
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x = (x_alpha_max * (n_frames - frame)) / n_frames;
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- result = CLAMP (pow2f (x) - 1, 0, CLUTTER_ALPHA_MAX_ALPHA);
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+ result = CLAMP (powf (2, x) - 1, 0, CLUTTER_ALPHA_MAX_ALPHA);
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return result;
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}
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