X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Frender%2Frenderer.cpp;h=03653edc1078583aa3378fec60b9ca730599c14d;hb=6f39983060a27634c012f66c82fea0d09fea9774;hp=416a0fc89ced4827147982f234ca009fb94576c0;hpb=7aaec9a70b8d7733429bec043f8e33e02956f266;p=libs%2Fgl.git

diff --git a/source/render/renderer.cpp b/source/render/renderer.cpp
index 416a0fc8..03653edc 100644
--- a/source/render/renderer.cpp
+++ b/source/render/renderer.cpp
@@ -74,19 +74,76 @@ void Renderer::transform(const Matrix &matrix)
 	changed |= MATRIX;
 }
 
+void Renderer::set_texture(Tag tag, const Texture *tex, const Sampler *samp)
+{
+	set_texture(tag, -1, tex, samp);
+}
+
+void Renderer::set_texture(Tag tag, int unit, const Texture *tex, const Sampler *samp)
+{
+	if(texture_stack.size()>state->texture_count)
+	{
+		BoundTexture &bt = texture_stack[state->texture_count];
+		if((!tag.id || bt.tag==tag) && (unit<0 || bt.unit==unit) && bt.texture==tex && bt.sampler==samp)
+		{
+			++state->texture_count;
+			return;
+		}
+		else
+			flush_textures();
+	}
+
+	for(vector<BoundTexture>::iterator i=texture_stack.end(); i!=texture_stack.begin(); )
+		if((--i)->tag==tag && i->unit==unit)
+		{
+			i->replaced = texture_stack.size();
+			break;
+		}
+
+	texture_stack.push_back(BoundTexture());
+	BoundTexture &bound_tex = texture_stack.back();
+	bound_tex.tag = tag;
+	bound_tex.unit = unit;
+	bound_tex.texture = tex;
+	bound_tex.sampler = samp;
+	state->texture_count = texture_stack.size();
+}
+
 void Renderer::set_texture(const Texture *t, const Sampler *s)
 {
-	state->texture = t;
-	state->sampler = s;
-	state->texturing = 0;
+	set_texture(Tag(), 0, t, s);
 }
 
+void Renderer::flush_textures()
+{
+	for(unsigned i=0; i<texture_stack.size(); ++i)
+	{
+		BoundTexture &bt = texture_stack[i];
+		if(i>=state->texture_count && bt.unit>=0)
+		{
+			Texture::unbind_from(bt.unit);
+			Sampler::unbind_from(bt.unit);
+		}
+		else if(bt.replaced>=static_cast<int>(state->texture_count))
+			bt.replaced = -1;
+	}
+
+	texture_stack.erase(texture_stack.begin()+state->texture_count, texture_stack.end());
+}
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 void Renderer::set_texturing(const Texturing *t)
 {
-	state->texturing = t;
-	state->texture = 0;
-	state->sampler = 0;
+	if(t)
+	{
+		unsigned n_units = TexUnit::get_n_units();
+		for(unsigned i=0; i<n_units; ++i)
+			if(const Texture *tex = t->get_attached_texture(i))
+				set_texture(Tag(), i, tex, t->get_attached_sampler(i));
+	}
 }
+#pragma GCC diagnostic pop
 
 unsigned Renderer::allocate_effect_texunit()
 {
@@ -233,8 +290,12 @@ void Renderer::end()
 	shdata_stack.clear();
 	excluded.clear();
 
-	Texturing::unbind();
-	Texture::unbind_from(0);
+	for(vector<BoundTexture>::iterator i=texture_stack.begin(); i!=texture_stack.end(); ++i)
+		if(i->unit>=0)
+		{
+			Texture::unbind_from(i->unit);
+			Sampler::unbind_from(i->unit);
+		}
 	Clipping::unbind();
 	Program::unbind();
 	VertexSetup::unbind();
@@ -252,7 +313,7 @@ void Renderer::include(const Renderable &renderable)
 	excluded.erase(&renderable);
 }
 
-void Renderer::render(const Renderable &renderable, const Tag &tag)
+void Renderer::render(const Renderable &renderable, Tag tag)
 {
 	if(!excluded.count(&renderable))
 		renderable.render(*this, tag);
@@ -280,21 +341,20 @@ void Renderer::apply_state()
 	/* We (mostly) let the objects themselves figure out if the binding has
 	changed */
 
-	if(state->texturing)
-		state->texturing->bind();
-	else
+	if(state->texture_count<texture_stack.size())
+		flush_textures();
+
+	for(vector<BoundTexture>::const_iterator i=texture_stack.begin(); i!=texture_stack.end(); ++i)
 	{
-		Texturing::unbind();
-		if(state->texture)
+		int unit = (i->tag.id ? state->shprog->get_uniform_binding(i->tag) : i->unit);
+		if(unit>=0)
 		{
-			if(state->sampler)
-				state->sampler->bind_to(0);
-			else
-				Sampler::unbind_from(0);
-			state->texture->bind_to(0);
+			if(i->texture)
+				i->texture->bind_to(unit);
+			if(i->sampler)
+				i->sampler->bind_to(unit);
+			i->unit = unit;
 		}
-		else
-			Texture::unbind_from(0);
 	}
 
 	if(state->clipping)
@@ -354,10 +414,17 @@ void Renderer::apply_state()
 }
 
 
+Renderer::BoundTexture::BoundTexture():
+	unit(-1),
+	texture(0),
+	sampler(0),
+	replaced(-1)
+{ }
+
+
 Renderer::State::State():
 	camera(0),
-	texture(0),
-	texturing(0),
+	texture_count(0),
 	lowest_effect_texunit(TexUnit::get_n_units()),
 	material(0),
 	lighting(0),