Add a texunit statement which automatically determines the unit number

[libs/gl.git] / source / renderpass.cpp

diff --git a/source/renderpass.cpp b/source/renderpass.cpp
index 4e3b1f1332bbd0dcda294940821d61be091604f3..d2ce1652fa682138bd5592dd7698e7b4b01060d5 100644 (file)
--- a/source/renderpass.cpp
+++ b/source/renderpass.cpp
@@ -131,6 +131,7 @@ void RenderPass::Loader::init()
        add("material_slot", &RenderPass::material_slot);
        add("back_faces",&RenderPass::back_faces);
        add("texunit",  &Loader::texunit);
+       add("texunit",  &Loader::texunit_auto);
        add("texunit",  &Loader::texunit_named);
        add("uniforms", &Loader::uniforms);
        add("uniform_slot", &Loader::uniform_slot);
@@ -160,6 +161,16 @@ void RenderPass::Loader::texunit(unsigned i)
        load_sub_with(ldr);
 }
 
+void RenderPass::Loader::texunit_auto(const string &n)
+{
+       if(!obj.texturing)
+               obj.texturing = new Texturing;
+       int i = obj.texturing->find_free_unit(n);
+       if(i<0)
+               throw runtime_error("no free texunit");
+       texunit_named(i, n);
+}
+
 void RenderPass::Loader::texunit_named(unsigned i, const string &n)
 {
        texunit(i);