1d33790dc0
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.
55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
#include "../fixtures/util.hpp"
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#include "../fixtures/fixture_log_observer.hpp"
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#include <mbgl/map/map.hpp>
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#include <mbgl/platform/default/headless_view.hpp>
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#include <mbgl/platform/default/headless_display.hpp>
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#include <mbgl/storage/default_file_source.hpp>
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#include <mbgl/util/image.hpp>
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#include <mbgl/util/io.hpp>
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#include <future>
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TEST(API, RepeatedRender) {
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using namespace mbgl;
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const auto style = util::read_file("test/fixtures/api/water.json");
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auto display = std::make_shared<mbgl::HeadlessDisplay>();
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HeadlessView view(display, 1, 256, 512);
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DefaultFileSource fileSource(nullptr);
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Log::setObserver(std::make_unique<FixtureLogObserver>());
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Map map(view, fileSource, MapMode::Still);
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{
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map.setStyleJSON(style, "");
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std::promise<PremultipliedImage> promise;
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map.renderStill([&promise](std::exception_ptr, PremultipliedImage&& image) {
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promise.set_value(std::move(image));
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});
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auto result = std::move(promise.get_future().get());
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ASSERT_EQ(256, result.width);
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ASSERT_EQ(512, result.height);
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util::write_file("test/fixtures/api/1.png", encodePNG(result));
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}
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{
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map.setStyleJSON(style, "TEST_DATA/suite");
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std::promise<PremultipliedImage> promise;
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map.renderStill([&promise](std::exception_ptr, PremultipliedImage&& image) {
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promise.set_value(std::move(image));
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});
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auto result = std::move(promise.get_future().get());
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ASSERT_EQ(256, result.width);
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ASSERT_EQ(512, result.height);
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util::write_file("test/fixtures/api/2.png", encodePNG(result));
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}
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auto observer = Log::removeObserver();
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auto flo = dynamic_cast<FixtureLogObserver*>(observer.get());
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auto unchecked = flo->unchecked();
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EXPECT_TRUE(unchecked.empty()) << unchecked;
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}
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