From 6df9d5ad90812d598904831e046753ecc0d11e52 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sat, 19 Nov 2022 12:30:30 +0000
Subject: Shared context, persist main window in test, send test for upcoming
 pointlight

---
 test/test-render.cpp   | 35 +++++++++++++++++++++++++++++------
 ui/applicationBase.cpp |  1 +
 2 files changed, 30 insertions(+), 6 deletions(-)

diff --git a/test/test-render.cpp b/test/test-render.cpp
index 89b2d90..62090e3 100644
--- a/test/test-render.cpp
+++ b/test/test-render.cpp
@@ -12,9 +12,9 @@
 #include <ui/sceneRenderer.h>
 #include <ui/window.h>
 
-class TestRenderWindow : public Window {
+class TestRenderOutput {
 public:
-	TestRenderWindow() : Window(640, 480, __FILE__, SDL_WINDOW_OPENGL | SDL_WINDOW_HIDDEN)
+	TestRenderOutput() : size {640, 480}
 	{
 		glBindFramebuffer(GL_FRAMEBUFFER, output);
 		const auto configuregdata
@@ -37,18 +37,27 @@ public:
 			throw std::runtime_error("Framebuffer not complete!");
 		}
 	}
+	const glm::ivec2 size;
+	glFrameBuffer output;
+	glRenderBuffer depth;
+	glTexture outImage;
+};
+
+class TestMainWindow : public Window {
+	// This exists only to hold an OpenGL context open for the duration of the tests,
+	// in the same way a real main window would always exist.
+public:
+	TestMainWindow() : Window {1, 1, __FILE__, SDL_WINDOW_OPENGL | SDL_WINDOW_HIDDEN} { }
 	void
 	tick(TickDuration) override
 	{
 	}
-	glFrameBuffer output;
-	glRenderBuffer depth;
-	glTexture outImage;
 };
 
 BOOST_GLOBAL_FIXTURE(ApplicationBase);
+BOOST_GLOBAL_FIXTURE(TestMainWindow);
 
-BOOST_FIXTURE_TEST_SUITE(w, TestRenderWindow);
+BOOST_FIXTURE_TEST_SUITE(w, TestRenderOutput);
 
 BOOST_AUTO_TEST_CASE(basic)
 {
@@ -64,4 +73,18 @@ BOOST_AUTO_TEST_CASE(basic)
 	Texture::save(outImage, size, "/tmp/basic.tga");
 }
 
+BOOST_AUTO_TEST_CASE(pointlight)
+{
+	auto gd = std::make_shared<GeoData>(GeoData::Limits {{0, 0}, {100, 100}});
+	gd->generateRandom();
+	Terrain terrain {gd};
+	SceneRenderer ss {size, output};
+	ss.camera.pos = {-10, -10, 60};
+	ss.camera.forward = glm::normalize(glm::vec3 {1, 1, -0.5F});
+	ss.render([&terrain](const auto & shader) {
+		terrain.render(shader);
+	});
+	Texture::save(outImage, size, "/tmp/pointlight.tga");
+}
+
 BOOST_AUTO_TEST_SUITE_END();
diff --git a/ui/applicationBase.cpp b/ui/applicationBase.cpp
index 5c87359..cad449d 100644
--- a/ui/applicationBase.cpp
+++ b/ui/applicationBase.cpp
@@ -16,6 +16,7 @@ ApplicationBase::ApplicationBase()
 	SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
 	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 4);
 	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 5);
+	SDL_GL_SetAttribute(SDL_GL_SHARE_WITH_CURRENT_CONTEXT, 1);
 }
 
 ApplicationBase::~ApplicationBase()
-- 
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