Font builder

tests/RenderCadenceCompositorSupportedShaderCatalogTests.cpp

@@ -1,5 +1,6 @@
 #include "SupportedShaderCatalog.h"
 
+#include <filesystem>
 #include <iostream>
 #include <string>
 
@@ -29,6 +30,21 @@ ShaderPackage MakeSinglePassPackage()
 	return shaderPackage;
 }
 
+std::filesystem::path RepoRoot()
+{
+	std::filesystem::path path = std::filesystem::current_path();
+	while (!path.empty())
+	{
+		if (std::filesystem::exists(path / "shaders" / "text-overlay" / "shader.json"))
+			return path;
+		const std::filesystem::path parent = path.parent_path();
+		if (parent.empty() || parent == path)
+			break;
+		path = parent;
+	}
+	return std::filesystem::current_path();
+}
+
 void SupportsSinglePassStatelessPackage()
 {
 	const ShaderPackage shaderPackage = MakeSinglePassPackage();
@@ -110,6 +126,24 @@ void RejectsTextParameters()
 	Expect(!result.supported, "text-parameter packages should be rejected for now");
 	Expect(result.reason.find("text") != std::string::npos, "text rejection should mention text parameters");
 }
+
+void BuildsDeclaredFontAtlasesDuringCatalogLoad()
+{
+	RenderCadenceCompositor::SupportedShaderCatalog catalog;
+	std::string error;
+	Expect(catalog.Load(RepoRoot() / "shaders", 12, error), "shader catalog loads");
+
+	const auto& fontAtlases = catalog.FontAtlases();
+	const auto textOverlayIt = fontAtlases.find("text-overlay");
+	Expect(textOverlayIt != fontAtlases.end(), "text overlay font atlas is prepared during catalog load");
+	if (textOverlayIt != fontAtlases.end() && !textOverlayIt->second.empty())
+	{
+		Expect(std::filesystem::exists(textOverlayIt->second.front().imagePath), "catalog font atlas image exists");
+		Expect(std::filesystem::exists(textOverlayIt->second.front().jsonPath), "catalog font atlas json exists");
+		Expect(std::filesystem::file_size(textOverlayIt->second.front().imagePath) > 0, "catalog font atlas image is not empty");
+		Expect(std::filesystem::file_size(textOverlayIt->second.front().jsonPath) > 0, "catalog font atlas json is not empty");
+	}
+}
 }
 
 int main()
@@ -120,6 +154,7 @@ int main()
 	RejectsTemporalPackage();
 	RejectsTextureAssets();
 	RejectsTextParameters();
+	BuildsDeclaredFontAtlasesDuringCatalogLoad();
 
 	if (gFailures != 0)
 	{