X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Feffects%2Fshadowmap.cpp;h=4cc0475d3e6ad79fae9d207755161ffba3826503;hp=74dad5e78b74fb6d32505008ca2ecf15d262600b;hb=bace0b24414abc7b3ba46df3a9fd7408d7479a5e;hpb=cdedbb34eff07f188c536167592958e315d53a9b

diff --git a/source/effects/shadowmap.cpp b/source/effects/shadowmap.cpp
index 74dad5e7..4cc0475d 100644
--- a/source/effects/shadowmap.cpp
+++ b/source/effects/shadowmap.cpp
@@ -26,11 +26,14 @@ ShadowMap::ShadowMap(unsigned w, unsigned h, Renderable &r, const Lighting *l):
 	for(unsigned i=0; i<4; ++i)
 	{
 		string base = format("shadows[%d]", i);
-		shdata.uniform(base+".enabled", 0);
+		shdata.uniform(base+".type", 0);
 		shdata.uniform(base+".darkness", 1.0f);
-		shdata.uniform(base+".shd_world_matrix", Matrix());
+		shdata.uniform(base+".matrix_index", 0);
 		shdata.uniform(base+".region", Vector4(0.0f, 0.0f, 1.0f, 1.0f));
 	}
+
+	Matrix dummy_matrix;
+	shdata.uniform_array("shd_world_matrix", 1, &dummy_matrix);
 }
 
 ShadowMap::ShadowMap(unsigned s, Renderable &r, const DirectionalLight &l, Renderable &c):
@@ -44,6 +47,11 @@ ShadowMap::ShadowMap(unsigned w, unsigned h, Renderable &r, const Lighting &l):
 { }
 
 void ShadowMap::add_light(const DirectionalLight &light, unsigned s, Renderable &c)
+{
+	add_light(light, s, DIRECTIONAL, c);
+}
+
+void ShadowMap::add_light(const Light &light, unsigned s, ShadowType type, Renderable &c)
 {
 	if(!lighting && !lights.empty())
 		throw invalid_operation("ShadowMap::add_light");
@@ -89,11 +97,19 @@ void ShadowMap::add_light(const DirectionalLight &light, unsigned s, Renderable
 	sl.light = &light;
 	sl.index = index;
 	sl.region = region;
+	sl.type = type;
+	sl.view_index = views.size();
 	sl.shadow_caster = &c;
 
+	views.emplace_back();
+	ShadowView &view = views[sl.view_index];
+	view.light_index = lights.size()-1;
+	view.face = 0;
+
 	string base = format("shadows[%d]", index);
-	shdata.uniform(base+".enabled", 1);
+	shdata.uniform(base+".type", static_cast<int>(type));
 	shdata.uniform(base+".darkness", darkness);
+	shdata.uniform(base+".matrix_index", static_cast<int>(sl.view_index));
 
 	float xf = static_cast<float>(region.left)/width;
 	float yf = static_cast<float>(region.bottom)/height;
@@ -103,7 +119,10 @@ void ShadowMap::add_light(const DirectionalLight &light, unsigned s, Renderable
 
 #ifdef DEBUG
 	if(!debug_name.empty())
-		sl.shadow_camera.set_debug_name(format("%s/light%d.camera", debug_name, lights.size()-1));
+	{
+		for(unsigned i=sl.view_index; i<views.size(); ++i)
+			views[i].camera.set_debug_name(format("%s/view%d.camera", debug_name, i));
+	}
 #endif
 }
 
@@ -141,30 +160,37 @@ void ShadowMap::setup_frame(Renderer &renderer)
 	for(const ShadowedLight &l: lights)
 		l.shadow_caster->setup_frame(renderer);
 
-	for(ShadowedLight &l: lights)
+	vector<Matrix> shadow_matrices;
+	shadow_matrices.reserve(views.size());
+	for(ShadowView &v: views)
 	{
-		l.shadow_camera.set_object_matrix(*l.light->get_matrix());
-		l.shadow_camera.set_position(target);
-		// TODO support point and spot lights with a frustum projection.
-		// Omnidirectional lights also need a cube shadow map.
-		l.shadow_camera.set_orthographic(radius*2, radius*2);
-		l.shadow_camera.set_depth_clip(-radius, radius);
+		const ShadowedLight &light = lights[v.light_index];
 
-		Matrix to_texcoord = Matrix().translate(Vector3(0.5f, 0.5f, 0.5f-depth_bias/l.region.width)).scale(0.5f);
-		Matrix shadow_matrix = to_texcoord*l.shadow_camera.get_projection_matrix()*l.shadow_camera.get_view_matrix();
+		if(light.type==DIRECTIONAL)
+		{
+			v.camera.set_object_matrix(*light.light->get_matrix());
+			v.camera.set_position(target);
+			v.camera.set_orthographic(radius*2, radius*2);
+			v.camera.set_depth_clip(-radius, radius);
+		}
 
-		shdata.uniform(format("shadows[%d].shd_world_matrix", l.index), shadow_matrix);
+		Matrix to_texcoord = Matrix().translate(Vector3(0.5f, 0.5f, 0.5f-depth_bias/light.region.width)).scale(0.5f);
+		shadow_matrices.push_back(to_texcoord*v.camera.get_projection_matrix()*v.camera.get_view_matrix());
 	}
 
-	for(ShadowedLight &l: lights)
+	shdata.uniform_array("shd_world_matrix", shadow_matrices.size(), shadow_matrices.data());
+
+	for(const ShadowView &v: views)
 	{
+		const ShadowedLight &light = lights[v.light_index];
+
 		Renderer::Push push(renderer);
 		renderer.set_framebuffer(&fbo);
-		renderer.set_viewport(&l.region);
-		renderer.set_scissor(&l.region);
-		renderer.set_camera(l.shadow_camera);
+		renderer.set_viewport(&light.region);
+		renderer.set_scissor(&light.region);
+		renderer.set_camera(v.camera);
 
-		renderer.render(*light.shadow_caster);
+		renderer.render(*light.shadow_caster, (v.face>0 ? "noclear" : ""));
 	}
 }
 
@@ -193,8 +219,8 @@ void ShadowMap::set_debug_name(const string &name)
 {
 #ifdef DEBUG
 	fbo.set_debug_name(name+" [FBO]");
-	for(unsigned i=0; i<lights.size(); ++i)
-		lights[i].shadow_camera.set_debug_name(format("%s/light%d.camera", name, i));
+	for(unsigned i=0; i<views.size(); ++i)
+		views[i].camera.set_debug_name(format("%s/view%d.camera", name, i));
 	depth_buf.set_debug_name(name+"/depth.tex");
 	shdata.set_debug_name(name+" [UBO]");
 #else