From 2f198e3210714c7abac53bbe1be4d41b1ef85c14 Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Sun, 21 Feb 2021 23:30:55 +0200
Subject: [PATCH] Implement an unlit material type

---
 source/materials/material.cpp      |  2 +
 source/materials/unlitmaterial.cpp | 70 ++++++++++++++++++++++++++++++
 source/materials/unlitmaterial.h   | 49 +++++++++++++++++++++
 3 files changed, 121 insertions(+)
 create mode 100644 source/materials/unlitmaterial.cpp
 create mode 100644 source/materials/unlitmaterial.h

diff --git a/source/materials/material.cpp b/source/materials/material.cpp
index 810ecd17..17fa546b 100644
--- a/source/materials/material.cpp
+++ b/source/materials/material.cpp
@@ -6,6 +6,7 @@
 #include "resources.h"
 #include "texturing.h"
 #include "uniform.h"
+#include "unlitmaterial.h"
 
 using namespace std;
 
@@ -68,6 +69,7 @@ Material::MaterialRegistry &Material::get_material_registry()
 		initialized = true;
 		registry.register_type<BasicMaterial>("basic");
 		registry.register_type<PbrMaterial>("pbr");
+		registry.register_type<UnlitMaterial>("unlit");
 	}
 	return registry;
 }
diff --git a/source/materials/unlitmaterial.cpp b/source/materials/unlitmaterial.cpp
new file mode 100644
index 00000000..5eddd669
--- /dev/null
+++ b/source/materials/unlitmaterial.cpp
@@ -0,0 +1,70 @@
+#include "unlitmaterial.h"
+
+using namespace std;
+
+namespace Msp {
+namespace GL {
+
+UnlitMaterial::UnlitMaterial():
+	texture(0),
+	vertex_color(false)
+{
+	set_tint(Color(1.0f));
+}
+
+string UnlitMaterial::create_program_source() const
+{
+	string source = "import unlit;\n";
+	if(texture)
+		source += "const bool use_texture = true;\n";
+	if(vertex_color)
+		source += "const bool use_vertex_color = true;\n";
+	return source;
+}
+
+void UnlitMaterial::attach_textures_to(Texturing &texturing, ProgramData &tex_shdata) const
+{
+	attach_texture_to(texture, texturing, tex_shdata, "texture");
+}
+
+void UnlitMaterial::set_texture(const Texture *tex)
+{
+	texture = tex;
+}
+
+void UnlitMaterial::set_tint(const Color &t)
+{
+	tint = t;
+	shdata.uniform("tint", tint);
+}
+
+void UnlitMaterial::set_vertex_color(bool vc)
+{
+	vertex_color = vc;
+}
+
+
+DataFile::Loader::ActionMap UnlitMaterial::Loader::shared_actions;
+
+UnlitMaterial::Loader::Loader(UnlitMaterial &m):
+	DerivedObjectLoader<UnlitMaterial, Material::PropertyLoader<UnlitMaterial> >(m)
+{
+	set_actions(shared_actions);
+}
+
+UnlitMaterial::Loader::Loader(UnlitMaterial &m, Collection &c):
+	DerivedObjectLoader<UnlitMaterial, Material::PropertyLoader<UnlitMaterial> >(m, c)
+{
+	set_actions(shared_actions);
+}
+
+void UnlitMaterial::Loader::init_actions()
+{
+	Material::PropertyLoader<UnlitMaterial>::init_actions();
+	add("texture", &Loader::property_texture, &UnlitMaterial::set_texture);
+	add_property("tint", &UnlitMaterial::set_tint, 0, true);
+	add("vertex_color", &UnlitMaterial::vertex_color);
+}
+
+} // namespace GL
+} // namespace Msp
diff --git a/source/materials/unlitmaterial.h b/source/materials/unlitmaterial.h
new file mode 100644
index 00000000..b8b28835
--- /dev/null
+++ b/source/materials/unlitmaterial.h
@@ -0,0 +1,49 @@
+#ifndef MSP_GL_UNLITMATERIAL_H_
+#define MSP_GL_UNLITMATERIAL_H_
+
+#include "material.h"
+
+namespace Msp {
+namespace GL {
+
+class UnlitMaterial: public Material
+{
+public:
+	class Loader: public DataFile::DerivedObjectLoader<UnlitMaterial, Material::PropertyLoader<UnlitMaterial> >
+	{
+	private:
+		static ActionMap shared_actions;
+
+	public:
+		Loader(UnlitMaterial &);
+		Loader(UnlitMaterial &, Collection &);
+
+	private:
+		virtual void init_actions();
+
+		void texture(const std::string &);
+	};
+
+private:
+	const Texture *texture;
+	Color tint;
+	bool vertex_color;
+
+public:
+	UnlitMaterial();
+
+protected:
+	virtual std::string create_program_source() const;
+
+public:
+	virtual void attach_textures_to(Texturing &, ProgramData &) const;
+
+	void set_texture(const Texture *);
+	void set_tint(const Color &);
+	void set_vertex_color(bool);
+};
+
+} // namespace GL
+} // namespace Msp
+
+#endif
-- 
2.43.0