From 2e789cb9894ac5a9565013b134f1c1e51174f430 Mon Sep 17 00:00:00 2001
From: Stijn Buys <ingar@osirion.org>
Date: Sun, 13 Jul 2008 00:36:09 +0000
Subject: skyglobe

---
 src/render/draw.cc   | 58 +++++++++++++++++++++++++++++++++++++++++++++-------
 src/render/render.cc | 12 +++++++++--
 src/render/render.h  |  5 ++++-
 3 files changed, 65 insertions(+), 10 deletions(-)

(limited to 'src/render')

diff --git a/src/render/draw.cc b/src/render/draw.cc
index 1091d8c..6aafcca 100644
--- a/src/render/draw.cc
+++ b/src/render/draw.cc
@@ -66,6 +66,25 @@ void draw_sphere(math::Color const & color, float radius)
 	//gl::pop();
 }
 
+void draw_sphere_inside(math::Color const & color, float radius)
+{	
+	//gl::push();
+	gl::scale(radius, radius, radius);
+	gl::color(color);
+
+	size_t index = (model::SPHERESEGMENTS) * (model::SPHERESEGMENTS-1);
+	size_t count = (model::SPHERESEGMENTS)*2;
+
+	// draw body
+	for (int j=0; j < (model::SPHERESEGMENTS-1)/2; j++) {
+		glDrawArrays(gl::QuadStrip, index, count);
+		index += count;
+		Stats::quads += count/2-1;
+	}
+
+	//gl::pop();
+}
+
 void draw_entity_sphere(core::Entity *entity)
 {
 	if ((entity->type() == core::Entity::Globe) && !flag_is_set(entity->flags(), core::Entity::Bright)) {
@@ -393,6 +412,25 @@ void pass_prepare(float seconds)
 	}
 }
 
+/* Draw skybox */
+void draw_pass_skybox()
+{
+
+	if (!(r_sky && r_sky->value()))
+		return;
+
+	size_t flare_texture = Textures::load("textures/env/sky");
+	Textures::bind(flare_texture);
+
+	gl::enable(GL_TEXTURE_2D);
+	gl::push();
+	
+	draw_sphere_inside(math::Color(), 512);
+
+	gl::pop();
+	gl::disable(GL_TEXTURE_2D);
+}
+
 /* Draw entities without model */
 void draw_pass_default()
 {
@@ -692,6 +730,9 @@ void draw_pass_model_corona()
 
 void draw_pass_spacegrid()
 {
+	if (!(r_grid && r_grid->value()))
+		return;
+
 	int gridsize = 32;
 	float s = 1.0f / gridsize;
 	float z = -4.0f;
@@ -741,14 +782,8 @@ void draw(float seconds)
 	Camera::draw(seconds);		// draw the current camera transformation
 
 	pass_prepare(seconds);
-	
-	gl::enable(GL_DEPTH_TEST);	// enable depth buffer writing
-	gl::enable(GL_CULL_FACE);	// enable culling
-	gl::enable(GL_COLOR_MATERIAL);	// enable color tracking
-	gl::enable(GL_LIGHTING);
-	gl::disable(GL_BLEND);		// disbable alpha blending for world polys
-	gl::disable(GL_RESCALE_NORMAL);
 
+	// enable vertex arrays
 	glVertexPointer(3, GL_FLOAT, 0, vertexarray->vertex());
 	glNormalPointer(GL_FLOAT, 0, vertexarray->normal());
 	glColorPointer(3, GL_FLOAT, 0, vertexarray->color());
@@ -759,6 +794,15 @@ void draw(float seconds)
 	glEnableClientState(GL_COLOR_ARRAY);
 	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 
+	draw_pass_skybox();		// draw the skybox
+	
+	gl::enable(GL_DEPTH_TEST);	// enable depth buffer writing
+	gl::enable(GL_CULL_FACE);	// enable culling
+	gl::enable(GL_COLOR_MATERIAL);	// enable color tracking
+	gl::enable(GL_LIGHTING);
+	gl::disable(GL_BLEND);		// disbable alpha blending for world polys
+	gl::disable(GL_RESCALE_NORMAL);
+
 	if (r_wireframe && r_wireframe->value()) {
 		glPolygonMode(GL_FRONT, GL_LINE);
 	} else {
diff --git a/src/render/render.cc b/src/render/render.cc
index dac0972..ea70dbf 100644
--- a/src/render/render.cc
+++ b/src/render/render.cc
@@ -23,10 +23,12 @@ namespace render {
 
 GLuint textures[32];
 
-core::Cvar *r_radius = 0;
-core::Cvar *r_wireframe = 0;
 core::Cvar *r_arraysize = 0;
 core::Cvar *r_bbox = 0;
+core::Cvar *r_grid = 0;
+core::Cvar *r_radius = 0;
+core::Cvar *r_sky = 0;
+core::Cvar *r_wireframe = 0;
 
 using model::VertexArray;
 
@@ -82,9 +84,15 @@ void init()
 	r_wireframe = core::Cvar::get("r_wireframe", "0", core::Cvar::Archive);
 	r_wireframe->set_info("[bool] render wireframe");
 
+	r_grid = core::Cvar::get("r_grid", "1", core::Cvar::Archive);
+	r_grid->set_info("[bool] render the space grid");
+
 	r_bbox = core::Cvar::get("r_bbox", "0", core::Cvar::Archive);
 	r_bbox->set_info("[bool] render model bounding box");
 
+	r_sky = core::Cvar::get("r_sky", "1", core::Cvar::Archive);
+	r_sky->set_info("[bool] render the sky globe");
+
 	Camera::init();
 
 	Textures::init();
diff --git a/src/render/render.h b/src/render/render.h
index ebecf7f..2a8952e 100644
--- a/src/render/render.h
+++ b/src/render/render.h
@@ -24,10 +24,13 @@ namespace render {
 	/// shutdown the render subsystem
 	void shutdown();
 
+	extern core::Cvar *r_arraysize;
 	extern core::Cvar *r_bbox;
+	extern core::Cvar *r_grid;
 	extern core::Cvar *r_radius;
+	extern core::Cvar *r_sky;
 	extern core::Cvar *r_wireframe;
-	extern core::Cvar *r_arraysize;
+	
 
 	extern model::VertexArray *vertexarray;
 }
-- 
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