From e55aaf039c2294ba8b90b490cea65477ca1ef714 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sun, 13 Nov 2022 16:00:31 +0000
Subject: Add a basic if clunky render test

---
 test/test-render.cpp | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 test/test-render.cpp

(limited to 'test/test-render.cpp')

diff --git a/test/test-render.cpp b/test/test-render.cpp
new file mode 100644
index 0000000..f2f658f
--- /dev/null
+++ b/test/test-render.cpp
@@ -0,0 +1,66 @@
+#define BOOST_TEST_MODULE test_render
+
+#include "test-helpers.hpp"
+#include <boost/test/data/test_case.hpp>
+#include <boost/test/unit_test.hpp>
+
+#include <game/geoData.h>
+#include <game/terrain.h>
+#include <gfx/models/texture.h>
+#include <lib/glArrays.h>
+#include <ui/applicationBase.h>
+#include <ui/sceneRenderer.h>
+#include <ui/window.h>
+
+class TestRenderWindow : public Window {
+public:
+	TestRenderWindow() : Window(640, 480, __FILE__, SDL_WINDOW_OPENGL | SDL_WINDOW_HIDDEN)
+	{
+		glBindFramebuffer(GL_FRAMEBUFFER, output);
+		const auto configuregdata
+				= [this](const GLuint data, const GLint format, const GLenum type, const GLenum attachment) {
+					  glBindTexture(GL_TEXTURE_2D, data);
+					  glTexImage2D(GL_TEXTURE_2D, 0, format, size.x, size.y, 0, GL_RGBA, type, NULL);
+					  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+					  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+					  glFramebufferTexture2D(GL_FRAMEBUFFER, attachment, GL_TEXTURE_2D, data, 0);
+				  };
+		configuregdata(outImage, GL_RGBA, GL_UNSIGNED_BYTE, GL_COLOR_ATTACHMENT0);
+		glDrawBuffer(GL_COLOR_ATTACHMENT0);
+
+		glBindRenderbuffer(GL_RENDERBUFFER, depth);
+		glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, size.x, size.y);
+		glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, depth);
+
+		// finally check if framebuffer is complete
+		if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
+			throw std::runtime_error("Framebuffer not complete!");
+		}
+	}
+	void
+	tick(TickDuration) override
+	{
+	}
+	glFrameBuffer output;
+	glRenderBuffer depth;
+	glTexture outImage;
+};
+
+BOOST_GLOBAL_FIXTURE(ApplicationBase);
+BOOST_FIXTURE_TEST_SUITE(w, TestRenderWindow);
+
+BOOST_AUTO_TEST_CASE(basic)
+{
+	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/basic.tga");
+}
+
+BOOST_AUTO_TEST_SUITE_END();
-- 
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