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authorVito Caputo <vcaputo@pengaru.com>2017-09-08 19:09:57 -0700
committerVito Caputo <vcaputo@pengaru.com>2017-09-14 17:52:34 -0700
commit7e999e37a5cf65e466091f4d8eeb36a6cea20f52 (patch)
treefa1778c1daf753f46dcc1ca16d492dfa888f6fd3 /src/modules/julia/julia.c
parent77f6d721564ceba589af14554685821aedfc8462 (diff)
*: use fragment generator
Rather than laying out all fragments in a frame up-front in ray_module_t.prepare_frame(), return a fragment generator (rototiller_fragmenter_t) which produces the numbered fragment as needed. This removes complexity from the serially-executed prepare_frame() and allows the individual fragments to be computed in parallel by the different threads. It also eliminates the need for a fragments array in the rototiller_frame_t, indeed rototiller_frame_t is eliminated altogether.
Diffstat (limited to 'src/modules/julia/julia.c')
-rw-r--r--src/modules/julia/julia.c25
1 files changed, 17 insertions, 8 deletions
diff --git a/src/modules/julia/julia.c b/src/modules/julia/julia.c
index 3215902..f2fb87d 100644
--- a/src/modules/julia/julia.c
+++ b/src/modules/julia/julia.c
@@ -13,11 +13,12 @@
/* TODO: explore using C99 complex.h and its types? */
typedef struct julia_context_t {
- float rr;
- float realscale;
- float imagscale;
- float creal;
- float cimag;
+ float rr;
+ float realscale;
+ float imagscale;
+ float creal;
+ float cimag;
+ unsigned n_cpus;
} julia_context_t;
static uint32_t colors[] = {
@@ -100,13 +101,21 @@ static inline unsigned julia_iter(float real, float imag, float creal, float cim
}
+static int julia_fragmenter(void *context, const fb_fragment_t *fragment, unsigned num, fb_fragment_t *res_fragment)
+{
+ julia_context_t *ctxt = context;
+
+ return fb_fragment_divide_single(fragment, ctxt->n_cpus, num, res_fragment);
+}
+
+
/* Prepare a frame for concurrent drawing of fragment using multiple fragments */
-static void julia_prepare_frame(void *context, unsigned n_cpus, fb_fragment_t *fragment, rototiller_frame_t *res_frame)
+static void julia_prepare_frame(void *context, unsigned n_cpus, fb_fragment_t *fragment, rototiller_fragmenter_t *res_fragmenter)
{
julia_context_t *ctxt = context;
- res_frame->n_fragments = n_cpus;
- fb_fragment_divide(fragment, n_cpus, res_frame->fragments);
+ *res_fragmenter = julia_fragmenter;
+ ctxt->n_cpus = n_cpus;
ctxt->rr += .01;
/* Rather than just sweeping creal,cimag from -2.0-+2.0, I try to keep things confined
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