From 2981bf4b5e66571cdf6e06710131d824632d1021 Mon Sep 17 00:00:00 2001
From: Stijn Buys <ingar@osirion.org>
Date: Thu, 16 Jul 2009 20:06:22 +0000
Subject: adds environment mapping to the renderer

---
 src/render/draw.cc | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

(limited to 'src/render')

diff --git a/src/render/draw.cc b/src/render/draw.cc
index 5b3127b..c559353 100644
--- a/src/render/draw.cc
+++ b/src/render/draw.cc
@@ -544,8 +544,14 @@ void draw_model_fragments(model::Model *model,
 	// default material, lighted and geometry color
 	const model::Material *material = 0;
 	bool use_light = true;		// gl::disable(GL_LIGHTING) is set
+	bool use_env = false;		// environment mapping
 	//bool use_color_array = true;	// glEnableClientState(GL_COLOR_ARRAY) is set
 
+	// TODO this should probably be initialized somewhere else
+	glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
+   	glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
+
+
 	for (model::Model::Groups::iterator git = model->groups().begin(); git != model->groups().end(); git++) {
 
 		model::FragmentGroup *group = (*git);
@@ -624,12 +630,43 @@ void draw_model_fragments(model::Model *model,
 							use_light = true;
 						}
 					}
+
+					if (material->flags() & model::Material::Environment) {
+						if (!use_env) {
+							Textures::bind(core::localplayer()->zone()->sky_texture());
+
+							// enable env mapping
+							gl::enable(GL_TEXTURE_2D);
+							gl::enable(GL_TEXTURE_GEN_S);
+   							gl::enable(GL_TEXTURE_GEN_T);
+							use_env = true;
+						}
+					} else {
+						if (use_env) {
+							// disable env mapping
+							gl::disable(GL_TEXTURE_GEN_S);
+   							gl::disable(GL_TEXTURE_GEN_T);
+							gl::disable(GL_TEXTURE_2D);
+							use_env = false;
+						}
+					}
+
 				} else {
 					// material not found
+
 					if (use_light) {
+						// disable lighting
 						gl::disable(GL_LIGHTING);
 						use_light = false;
 					}
+
+					if (use_env) {
+						// disable env mapping
+						gl::disable(GL_TEXTURE_GEN_S);
+   						gl::disable(GL_TEXTURE_GEN_T);
+						gl::disable(GL_TEXTURE_2D);
+						use_env = false;
+					}
 /*					if (!use_color_array) {
 						glEnableClientState(GL_COLOR_ARRAY);
 						use_color_array = true;
@@ -650,6 +687,15 @@ void draw_model_fragments(model::Model *model,
 		gl::enable(GL_LIGHTING);
 	}
 
+	if (use_env) {
+		// disable env mapping
+		gl::disable(GL_TEXTURE_2D);
+		gl::disable(GL_TEXTURE_GEN_S);
+		gl::disable(GL_TEXTURE_GEN_T);
+
+		use_env = false;
+	}
+
 /*	if (!use_color_array) {
 		glEnableClientState(GL_COLOR_ARRAY);
 	}*/
-- 
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