From ffdaa93edf5eeaf9db7dc17e51554a77dd9d596d Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sat, 19 Nov 2022 15:04:30 +0000
Subject: Separate out the illumation of the scene

---
 ui/sceneRenderer.h | 25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

(limited to 'ui/sceneRenderer.h')

diff --git a/ui/sceneRenderer.h b/ui/sceneRenderer.h
index c06fa83..8b81d0c 100644
--- a/ui/sceneRenderer.h
+++ b/ui/sceneRenderer.h
@@ -9,9 +9,18 @@
 
 class SceneRenderer {
 public:
+	class SceneProvider {
+	public:
+		virtual ~SceneProvider() = default;
+		virtual void content(const SceneShader &) const = 0;
+		virtual void environment(const SceneShader &, const SceneRenderer &) const;
+	};
+
 	explicit SceneRenderer(glm::ivec2 size, GLuint output);
 
-	void render(std::function<void(const SceneShader &)> content) const;
+	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;
 
@@ -19,14 +28,26 @@ private:
 	glm::ivec2 size;
 	GLuint output;
 	glFrameBuffer gBuffer;
-	glTexture gPosition, gNormal, gAlbedoSpec;
+	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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