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authorVito Caputo <vcaputo@pengaru.com>2017-04-22 12:18:01 -0700
committerVito Caputo <vcaputo@pengaru.com>2017-04-22 12:25:56 -0700
commitce124fe9d2621e52d57fa4d602708bd6ef3b2780 (patch)
tree0e18058b049c13be2ff4088f0ca2ecb569fb7688 /src
parenta41ef4dc8a518cb1b07aab1c60176a56fe91abd1 (diff)
plasma: enable threaded rendering
Same general procedure as the previous commit made to the julia module.
Diffstat (limited to 'src')
-rw-r--r--src/modules/plasma/plasma.c39
1 files changed, 25 insertions, 14 deletions
diff --git a/src/modules/plasma/plasma.c b/src/modules/plasma/plasma.c
index 26b38c2..8c3e921 100644
--- a/src/modules/plasma/plasma.c
+++ b/src/modules/plasma/plasma.c
@@ -21,6 +21,8 @@ typedef struct color_t {
int r, g, b;
} color_t;
+static int32_t costab[FIXED_TRIG_LUT_SIZE], sintab[FIXED_TRIG_LUT_SIZE];
+static unsigned rr;
static inline uint32_t color2pixel(color_t *color)
{
@@ -40,24 +42,34 @@ static void init_plasma(int32_t *costab, int32_t *sintab)
}
+/* Prepare a frame for concurrent drawing of fragment using multiple fragments */
+static void plasma_prepare_frame(unsigned n_cpus, fb_fragment_t *fragment, rototiller_frame_t *res_frame)
+{
+ static int initialized;
+
+ if (!initialized) {
+ initialized = 1;
+
+ init_plasma(costab, sintab);
+ }
+
+ res_frame->n_fragments = n_cpus;
+ fb_fragment_divide(fragment, n_cpus, res_frame->fragments);
+
+ rr += 3;
+}
+
+
/* Draw a plasma effect */
static void plasma_render_fragment(fb_fragment_t *fragment)
{
- static int32_t costab[FIXED_TRIG_LUT_SIZE], sintab[FIXED_TRIG_LUT_SIZE];
- static int initialized;
- static unsigned rr, rr2, rr6, rr8, rr16, rr20, rr12;
unsigned stride = fragment->stride / 4, width = fragment->width, height = fragment->height;
int fw2 = FIXED_NEW(width / 2), fh2 = FIXED_NEW(height / 2);
int x, y, cx, cy, dx2, dy2;
uint32_t *buf = fragment->buf;
color_t c = { .r = 0, .g = 0, .b = 0 }, cscale;
-
- if (!initialized) {
- initialized = 1;
-
- init_plasma(costab, sintab);
- }
+ unsigned rr2, rr6, rr8, rr16, rr20, rr12;
rr2 = rr * 2;
rr6 = rr * 6;
@@ -74,14 +86,14 @@ static void plasma_render_fragment(fb_fragment_t *fragment)
cx = FIXED_TO_INT(FIXED_MULT(FIXED_COS(rr), fw2) + fw2);
cy = FIXED_TO_INT(FIXED_MULT(FIXED_SIN(rr2), fh2) + fh2);
- for (y = 0; y < height; y++) {
+ for (y = fragment->y; y < fragment->y + height; y++) {
int y2 = y << 1;
int y4 = y << 2;
dy2 = cy - y;
dy2 *= dy2;
- for (x = 0; x < width; x++, buf++) {
+ for (x = fragment->x; x < fragment->x + width; x++, buf++) {
int v;
int hyp;
@@ -113,14 +125,13 @@ static void plasma_render_fragment(fb_fragment_t *fragment)
buf += stride;
}
-
- rr += 3;
}
rototiller_module_t plasma_module = {
+ .prepare_frame = plasma_prepare_frame,
.render_fragment = plasma_render_fragment,
.name = "plasma",
- .description = "Oldskool plasma effect",
+ .description = "Oldskool plasma effect (threaded)",
.author = "Vito Caputo <vcaputo@pengaru.com>",
.license = "GPLv2",
};
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