X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Frenderer.cpp;h=76ac5846f2aad1e9417780e39d87f3c816a81088;hp=c3a6923f17338cb51d4221f02f6aa158e07fa0fe;hb=1efd559eb32adf48200941402ccefc6b5422aa4c;hpb=63317e423282c1d8a7965743b20a9059a8086e67

diff --git a/source/renderer.cpp b/source/renderer.cpp
index c3a6923f..76ac5846 100644
--- a/source/renderer.cpp
+++ b/source/renderer.cpp
@@ -24,7 +24,6 @@ namespace GL {
 Renderer::Renderer(const Camera *c):
 	changed(0),
 	matrices_loaded(false),
-	shdata_applied(0),
 	state_stack(1)
 {
 	state_stack.reserve(16);
@@ -125,9 +124,16 @@ void Renderer::set_shader_program(const Program *p, const ProgramData *d)
 
 void Renderer::add_shader_data(const ProgramData &d)
 {
-	shdata_stack.push_back(&d);
-	state->shdata_count = shdata_stack.size();
-	changed |= SHADER_DATA;
+	if(state->shdata_count<shdata_stack.size() && shdata_stack[state->shdata_count]==&d)
+		++state->shdata_count;
+	else
+	{
+		if(shdata_stack.size()>state->shdata_count)
+			shdata_stack.erase(shdata_stack.begin()+state->shdata_count, shdata_stack.end());
+		shdata_stack.push_back(&d);
+		state->shdata_count = shdata_stack.size();
+		changed |= SHADER_DATA;
+	}
 }
 
 void Renderer::set_mesh(const Mesh *m)
@@ -161,12 +167,6 @@ void Renderer::pop_state()
 	const Clipping *old_clipping = state->clipping;
 	state_stack.pop_back();
 	state = &state_stack.back();
-	if(shdata_stack.size()>state->shdata_count)
-	{
-		shdata_stack.erase(shdata_stack.begin()+state->shdata_count, shdata_stack.end());
-		changed |= SHADER_DATA;
-	}
-	shdata_applied = min<unsigned>(shdata_applied, shdata_stack.size());
 	changed |= MATRIX;
 	bool camera_changed = (state->camera!=old_camera);
 	if(camera_changed)
@@ -343,15 +343,15 @@ void Renderer::apply_state()
 			}
 		}
 
-		if((changed&SHADER_DATA) || shprog_changed)
+		bool extra_shdata = (shdata_stack.size()>state->shdata_count);
+
+		if((changed&SHADER_DATA) || shprog_changed || extra_shdata)
 		{
-			vector<const ProgramData *>::const_iterator i = shdata_stack.begin();
-			if(!shprog_changed)
-				i += shdata_applied;
-			for(; i!=shdata_stack.end(); ++i)
+			if(extra_shdata)
+				shdata_stack.erase(shdata_stack.begin()+state->shdata_count, shdata_stack.end());
+			for(vector<const ProgramData *>::const_iterator i=shdata_stack.begin(); i!=shdata_stack.end(); ++i)
 				(*i)->apply();
 			changed &= ~SHADER_DATA;
-			shdata_applied = shdata_stack.size();
 		}
 	}
 	else