adds 'cull' option to fx_flare and fx_particles

1 files changed, 60 insertions, 6 deletions

diff --git a/src/render/draw.cc b/src/render/draw.cc
index fbf5058..3806672 100644
--- a/src/render/draw.cc
+++ b/src/render/draw.cc
@@ -744,9 +744,14 @@ void draw_pass_model_fx(float elapsed)
 
 	math::Axis flare_axis;
 
-	size_t current_texture = Textures::bind("textures/fx/flare00");
+	// disable culling by default	
+	gl::disable(GL_CULL_FACE);
+	model::Cull current_cull = model::CullNone;
 
+	// default light texture
+	size_t current_texture = Textures::bind("textures/fx/flare00");
 	gl::enable(GL_TEXTURE_2D);
+
 	gl::begin(gl::Quads);
 
 	for (core::Zone::Content::iterator it = zone->content().begin(); it != zone->content().end(); it++) {
@@ -775,6 +780,7 @@ void draw_pass_model_fx(float elapsed)
 					location.assign(entity->location() + (entity->axis() * light->location()));
 					light_size = 0.0625 * light->radius();
 	
+					// track stat changes
 					if (current_texture != light->texture()) {
 						gl::end();
 						current_texture = Textures::bind(light->texture());
@@ -826,9 +832,32 @@ void draw_pass_model_fx(float elapsed)
 					location.assign(entity->location() + (entity->axis() * flare->location()));
 					light_size = 0.0625 * flare->radius();
 	
-					if (current_texture != flare->texture()) {
+					if ((current_cull != flare->cull()) || (current_texture != flare->texture())) {
 						gl::end();
-						current_texture = Textures::bind(flare->texture());
+
+						if (current_texture != flare->texture()) {
+							current_texture = Textures::bind(flare->texture());		
+						}
+
+						if (current_cull != flare->cull()) {
+							if (flare->cull() == model::CullNone) {
+								gl::disable(GL_CULL_FACE);
+								current_cull = model::CullNone;
+							} else {
+								if (current_cull == model::CullNone) {
+									gl::enable(GL_CULL_FACE);
+								}
+
+								if (flare->cull() == model::CullBack) {
+									gl::cullface(GL_BACK);
+									current_cull = model::CullBack;
+								} else {
+									gl::cullface(GL_FRONT);
+									current_cull = model::CullFront;
+								}
+							}
+						}
+
 						gl::begin(gl::Quads);
 					}
 
@@ -870,23 +899,48 @@ void draw_pass_model_fx(float elapsed)
 			// draw particle systems
 			if (r_particles->value() && ext_render(entity)->particles().size()) {
 				gl::end();
-				gl::disable(GL_CULL_FACE);
-	
+
 				for (RenderExt::ParticleSystems::iterator it = ext_render(entity)->particles().begin(); it != ext_render(entity)->particles().end(); it++) {
 					ParticleSystem *particlesystem = (*it);
+
+					if (current_cull != particlesystem->cull()) {
+						if (particlesystem->cull() == model::CullNone) {
+							gl::disable(GL_CULL_FACE);
+							current_cull = model::CullNone;
+						} else {
+							if (current_cull == model::CullNone) {
+								gl::enable(GL_CULL_FACE);
+							}
+	
+							if (particlesystem->cull() == model::CullBack) {
+								gl::cullface(GL_BACK);
+								current_cull = model::CullBack;
+							} else {
+								gl::cullface(GL_FRONT);
+								current_cull = model::CullFront;
+							}
+						}
+					}
+
 					particlesystem->draw(elapsed);
 				}
 	
-				gl::enable(GL_CULL_FACE);
 				current_texture = Textures::bind("textures/fx/flare00");
 				gl::begin(gl::Quads);	
 			}
+
+			if (current_cull != model::CullNone) {
+				gl::disable(GL_CULL_FACE);
+				current_cull = model::CullNone;
+			}
 		}
 	}
 
 	gl::end();
 
 	gl::disable(GL_TEXTURE_2D);
+	gl::cullface(GL_BACK);
+	gl::enable(GL_CULL_FACE);
 }