From 78dc71bda71fc8eb7accfcf68d010a0fea1a7921 Mon Sep 17 00:00:00 2001
From: Lars-Dominik Braun <lars@6xq.net>
Date: Sat, 7 Mar 2015 11:21:07 +0100
Subject: Add bucket cache
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Stores accumulation buckets. Use case: Run n seconds, check image noise
levels, run again (with cache and thus previous results), check image
agin, …
---
 main.c | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

(limited to 'main.c')

diff --git a/main.c b/main.c
index 7a699c3..6a17b3a 100644
--- a/main.c
+++ b/main.c
@@ -35,6 +35,7 @@ const char *argp_program_version =
 typedef struct {
 	unsigned int bpc;
 	float scale, time;
+	char *cache;
 } render_arguments;
 
 static error_t parse_render_opt (int key, char *arg,
@@ -68,6 +69,10 @@ static error_t parse_render_opt (int key, char *arg,
 			}
 			break;
 
+		case 'c':
+			arguments->cache = strdup (arg);
+			break;
+
 		case ARGP_KEY_ARG:
 			if (state->arg_num > 0) {
 				return ARGP_ERR_UNKNOWN;
@@ -112,8 +117,16 @@ static void do_render (const render_arguments * const arguments) {
 
 	bucket bucket;
 	bucket_init (&bucket, (uint2) { genome->width, genome->height });
+	if (arguments->cache != NULL) {
+		bucket_deserialize (&bucket, arguments->cache);
+	}
 
 	render_bucket (genome, &bucket, arguments->time);
+
+	if (arguments->cache != NULL) {
+		bucket_serialize (&bucket, arguments->cache);
+	}
+
 	fprintf (stderr, "%lu samples, %lu bad\n",
 			bucket.samples, bucket.badvals);
 	render_image (genome, &bucket, image, bytes_per_channel);
@@ -476,8 +489,7 @@ int main (int argc, char **argv) {
 				{"scale", 's', "factor", 0, "Scale image dimensions by factor (1.0)" },
 				{"bpc", 'b', "8|16", 0, "Bits per channel of output image (8)" },
 				{"time", 't', "seconds", 0, "Rendering time" },
-				{"width", 'w', "pixels", 0, "Output image width" },
-				{"height", 'h', "pixels", 0, "Output image height" },
+				{"cache", 'c', "path", 0, "Cache file" },
 				{ 0 },
 				};
 		const char doc[] = "vlame3-render -- a fractal flame renderer";
@@ -490,6 +502,7 @@ int main (int argc, char **argv) {
 				.bpc = 8,
 				.scale = 1.0,
 				.time = 1.0,
+				.cache = NULL,
 				};
 
 		argp_parse (&argp, argc, argv, 0, NULL, &arguments);
-- 
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