Honor -c with rgbgfx -r

Fixes gbdev#1166
ISSOtm · Nov 24, 2023 · 8d85129 · 8d85129
1 parent aa5b163
commit 8d85129
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diff --git a/include/gfx/rgba.hpp b/include/gfx/rgba.hpp
@@ -37,6 +37,7 @@ struct Rgba {
 		auto shl = [](uint8_t val, unsigned shift) { return static_cast<uint32_t>(val) << shift; };
 		return shl(red, 24) | shl(green, 16) | shl(blue, 8) | shl(alpha, 0);
 	}
+	friend bool operator==(Rgba const &lhs, Rgba const &rhs) { return lhs.toCSS() == rhs.toCSS(); }
 	friend bool operator!=(Rgba const &lhs, Rgba const &rhs) { return lhs.toCSS() != rhs.toCSS(); }
 
 	/*

diff --git a/src/gfx/reverse.cpp b/src/gfx/reverse.cpp
@@ -141,6 +141,7 @@ void reverse() {
 	std::vector<std::array<Rgba, 4>> palettes{
 	    {Rgba(0xFFFFFFFF), Rgba(0xAAAAAAFF), Rgba(0x555555FF), Rgba(0x000000FF)}
     };
+    // If a palette file is used as input, it overrides the default colours.
 	if (options.palettes.has_value()) {
 		File file;
 		if (!file.open(*options.palettes, std::ios::in | std::ios::binary)) {
@@ -171,6 +172,14 @@ void reverse() {
 			warning("Read %zu palettes, more than the specified limit of %zu", palettes.size(),
 			        options.nbPalettes);
 		}
+
+		if (options.palSpecType == Options::EXPLICIT && palettes != options.palSpec) {
+			warning("Colors in the palette file do not match those specified with `-c`!\n");
+		}
+	} else if (options.palSpecType == Options::EMBEDDED) {
+		warning("An embedded palette was requested, but no palette file was specified; ignoring request.\n");
+	} else if (options.palSpecType == Options::EXPLICIT) {
+		palettes = std::move(options.palSpec); // We won't be using it again.
 	}
 
 	std::optional<DefaultInitVec<uint8_t>> attrmap;