From b32c086a9b9deed4c34ade6e2447861a9c4bfc46 Mon Sep 17 00:00:00 2001
From: Stijn Buys <ingar@osirion.org>
Date: Mon, 24 Mar 2008 12:35:48 +0000
Subject: moved the sphere into the vertex array

---
 src/render/draw.cc | 87 +++++++++++++++++++++++++++++++++++-------------------
 1 file changed, 57 insertions(+), 30 deletions(-)

(limited to 'src/render/draw.cc')

diff --git a/src/render/draw.cc b/src/render/draw.cc
index 590cddd..55f173c 100644
--- a/src/render/draw.cc
+++ b/src/render/draw.cc
@@ -8,22 +8,19 @@
 #include "core/model.h"
 #include "render/render.h"
 #include "render/draw.h"
-#include "render/sphere.h"
 
 namespace render
 {
 
-size_t Stats::tris;
-size_t Stats::spheres;
+size_t Stats::tris = 0;
+size_t Stats::quads = 0;
 
 void Stats::clear()
 {
 	tris = 0;
-	spheres = 0;
+	quads = 0;
 }
 
-Sphere sphere(1);
-
 math::Vector3f v0(1, -1, 1);
 math::Vector3f v1(1,  1, 1);
 math::Vector3f v2(-1,  1,  1);
@@ -42,12 +39,32 @@ float angle = 0;
 
 /* ----- Default Entity shapes ------------------------------------- */
 
+void draw_sphere(math::Color const & color, float radius)
+{	
+	//gl::push();
+	gl::scale(radius, radius, radius);
+	gl::color(color);
+
+	size_t index = 0;
+	size_t count = (core::SPHERESEGMENTS+1)*2;
+
+	// draw body
+	for (int j=0; j < core::SPHERESEGMENTS-1; j++) {
+		if (r_drawwireframe && r_drawwireframe->value()) {
+			glDrawArrays(gl::LineLoop, index, count);
+		} else {
+			glDrawArrays(gl::QuadStrip, index, count);
+		}		
+		index += count;
+		Stats::quads += count/2-1;
+	}
+
+	//gl::pop();
+}
+
 void draw_entity_sphere(core::Entity *entity)
 {
-	sphere.sphere_color = entity->color();
-	sphere.radius = entity->radius();
-	sphere.draw();
-	Stats::spheres += 1;
+	draw_sphere(entity->color(), entity->radius());
 }
 
 void draw_entity_cube(core::Entity *entity)
@@ -198,16 +215,17 @@ void draw_model_engines(core::EntityControlable *entity)
 
 void draw_model_radius(core::Entity *entity)
 {
-	sphere.sphere_color = entity->color();
-	sphere.sphere_color.a = 0.25f;
-	sphere.radius = entity->model()->radius();
-	sphere.draw();
-	Stats::spheres += 1;
+
+	math::Color color = entity->color();
+	color.a = 0.25f;
+
+	draw_sphere(color, entity->model()->radius());
 }
 
 void draw_model_shield(core::EntityControlable *entity)
 {
 	// shield rotation
+	//gl::push();
     	gl::rotate(angle, 0.0f, 0.0f, 1.0f );
 	gl::scale(entity->model()->radius(),  entity->model()->radius(),  entity->model()->radius());
 
@@ -237,7 +255,7 @@ void draw_model_shield(core::EntityControlable *entity)
 
 	gl::end();
 
-	gl::rotate(-angle, 0.0f, 0.0f, 1.0f );
+	//gl::pop();
 }
 
 /* ----- Render passes --------------------------------------------- */
@@ -266,14 +284,6 @@ void draw_pass_default()
 	for (it=core::Entity::registry.begin(); it != core::Entity::registry.end(); it++) {
 		core::Entity *entity = (*it).second;
 
-		// load entity models if necessary
-		if (!entity->model() && entity->modelname().size()) {
-			entity->entity_model = core::Model::get(entity->modelname());
-			
-			if (!entity->model())
-				entity->entity_modelname.clear();
-		}
-
 		// draw entities without model
 		if (!entity->model()) {
 			gl::push();
@@ -316,6 +326,15 @@ void draw_pass_model_vertex()
 
 		core::Entity *entity = (*it).second;
 
+		// load entity models if necessary
+		if (!entity->model() && entity->modelname().size()) {
+			entity->entity_model = core::Model::get(entity->modelname());
+			
+			if (!entity->model())
+				entity->entity_modelname.clear();
+		}
+
+
 		if (test_draw_distance(entity)) {
 			gl::push();
 			gl::translate(entity->location());
@@ -448,8 +467,7 @@ void draw(math::Vector3f const &eye, math::Vector3f const &target, float seconds
 	gl::enable(GL_COLOR_MATERIAL);	// enable color tracking
 	gl::enable(GL_LIGHTING);
 	gl::disable(GL_BLEND);		// disbable alpha blending for world polys
-
-	draw_pass_default();		// draw entities without model
+	gl::disable(GL_RESCALE_NORMAL);
 
 	glVertexPointer(3, GL_FLOAT, 0, core::VertexArray::vertex);
 	glNormalPointer(GL_FLOAT, 0, core::VertexArray::vertex_normal);
@@ -458,25 +476,32 @@ void draw(math::Vector3f const &eye, math::Vector3f const &target, float seconds
 	glEnableClientState(GL_VERTEX_ARRAY);
 	glEnableClientState(GL_NORMAL_ARRAY);
 	glEnableClientState(GL_COLOR_ARRAY);
-
+	
 	draw_pass_model_vertex();	// draw entities with model
 
 	glDisableClientState(GL_COLOR_ARRAY);
+	gl::enable(GL_RESCALE_NORMAL);	// rescale normals by the transformation matrix scale factor
+
+	draw_pass_default();		// draw entities without model
+
+	gl::disable(GL_RESCALE_NORMAL);
 
 	draw_pass_model_evertex();	// draw entities with model, vertices with entity color
 
-	glDisableClientState(GL_VERTEX_ARRAY);
-	glDisableClientState(GL_NORMAL_ARRAY);
-		
 	gl::disable(GL_LIGHTING);
 	gl::enable(GL_BLEND);
 
 	draw_pass_model_fx();		// draw entity lights and engines
 
 	gl::enable(GL_LIGHTING);
+	gl::enable(GL_RESCALE_NORMAL);
 
 	draw_pass_model_radius();	//draw entity radius
+	
+	glDisableClientState(GL_VERTEX_ARRAY);
+	glDisableClientState(GL_NORMAL_ARRAY);
 
+	gl::disable(GL_RESCALE_NORMAL);
 	gl::disable(GL_LIGHTING);
 	gl::disable(GL_COLOR_MATERIAL);	// disable color tracking
 	gl::disable(GL_CULL_FACE);	// disable culling
@@ -484,6 +509,8 @@ void draw(math::Vector3f const &eye, math::Vector3f const &target, float seconds
 	draw_pass_spacegrid();		// draw the blue spacegrid
 
 	gl::disable(GL_DEPTH_TEST);	// disable depth buffer writing
+
+	// GL_BLEND must be enabled for the GUI
 }
 
 }
-- 
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