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[core] Fix image type of Map::renderStill

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It's a premultiplied image. This implies that we were misusing encodePNG
in most cases, as we were passing premultiplied pixels which were then
interpreted as unmultiplied. I changed encodePNG to accept premultipled
pixels, and unpremultiply in the implementations.
This commit is contained in:
John Firebaugh
2015-11-25 13:49:12 -08:00
parent ed5eb9edc1
commit 1d33790dc0
21 changed files with 70 additions and 67 deletions
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6
bin/render.cpp
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@@ -104,14 +104,14 @@ int main(int argc, char *argv[]) {
uv_async_t *async = new uv_async_t;
uv_async_init(uv_default_loop(), async, [](UV_ASYNC_PARAMS(as)) {
std::unique_ptr<UnassociatedImage> image(reinterpret_cast<UnassociatedImage*>(as->data));
std::unique_ptr<PremultipliedImage> image(reinterpret_cast<PremultipliedImage*>(as->data));
uv_close(reinterpret_cast<uv_handle_t *>(as), [](uv_handle_t *handle) {
delete reinterpret_cast<uv_async_t *>(handle);
});
util::write_file(output, encodePNG(*image));
});
map.renderStill([async](std::exception_ptr error, UnassociatedImage&& image) {
map.renderStill([async](std::exception_ptr error, PremultipliedImage&& image) {
try {
if (error) {
std::rethrow_exception(error);
@@ -121,7 +121,7 @@ int main(int argc, char *argv[]) {
exit(1);
}
async->data = new UnassociatedImage(std::move(image));
async->data = new PremultipliedImage(std::move(image));
uv_async_send(async);
});