From 69d95f35512772fb42e04808cffabcdc82afed96 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sun, 27 Nov 2022 12:51:11 +0000
Subject:  SceneRenderer is a graphics component, not a UI one

---
 gfx/gl/sceneRenderer.h | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 gfx/gl/sceneRenderer.h

(limited to 'gfx/gl/sceneRenderer.h')

diff --git a/gfx/gl/sceneRenderer.h b/gfx/gl/sceneRenderer.h
new file mode 100644
index 0000000..f40b894
--- /dev/null
+++ b/gfx/gl/sceneRenderer.h
@@ -0,0 +1,55 @@
+#pragma once
+
+#include "gfx/gl/camera.h"
+#include "gfx/gl/program.h"
+#include "gfx/gl/sceneShader.h"
+#include "lib/glArrays.h"
+#include <functional>
+#include <glm/fwd.hpp>
+
+class SceneRenderer {
+public:
+	class SceneProvider {
+	public:
+		virtual ~SceneProvider() = default;
+		virtual void content(const SceneShader &) const = 0;
+		virtual void environment(const SceneShader &, const SceneRenderer &) const;
+		virtual void lights(const SceneShader &) const = 0;
+	};
+
+	explicit SceneRenderer(glm::ivec2 size, GLuint output);
+
+	void render(const SceneProvider &) const;
+	void setAmbientLight(const glm::vec3 & colour) const;
+	void setDirectionalLight(const glm::vec3 & colour, const glm::vec3 & direction) const;
+
+	Camera camera;
+
+private:
+	glm::ivec2 size;
+	GLuint output;
+	glFrameBuffer gBuffer;
+	glTexture gPosition, gNormal, gAlbedoSpec, gIllumination;
+	glRenderBuffer depth;
+	class DeferredLightProgram : public Program {
+	public:
+		using Program::Program;
+		using Program::use;
+	};
+	class DirectionalLightProgram : public Program {
+	public:
+		DirectionalLightProgram();
+		using Program::use;
+
+		void setDirectionalLight(const glm::vec3 &, const glm::vec3 &) const;
+
+	private:
+		RequiredUniformLocation directionLoc, colourLoc;
+	};
+
+	DeferredLightProgram lighting;
+	DirectionalLightProgram dirLight;
+	glVertexArray displayVAO;
+	glBuffer displayVBO;
+	SceneShader shader;
+};
-- 
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