Add support for alpha to coverage

[libs/gl.git] / source / materials / material.cpp

diff --git a/source/materials/material.cpp b/source/materials/material.cpp
index 6af833e6b5c30e48badcfd6bec78d45bce64eeee..542c84744b2f2b4dbb2c0fa434c240ee0908999d 100644 (file)
--- a/source/materials/material.cpp
+++ b/source/materials/material.cpp
@@ -14,6 +14,7 @@ namespace GL {
 Material::Material()
 {
        set_alpha_cutoff(0.0f);
+       set_alpha_feather(1.0f);
 }
 
 const Program *Material::create_compatible_shader(const map<string, int> &extra_spec) const
@@ -59,7 +60,13 @@ const Program *Material::create_compatible_shader(const map<string, int> &extra_
 void Material::set_alpha_cutoff(float a)
 {
        alpha_cutoff = a;
-       shdata.uniform("alpha_cutoff", a);
+       shdata.uniform("alpha_cutoff.cutoff", a);
+}
+
+void Material::set_alpha_feather(float f)
+{
+       alpha_feather = f;
+       shdata.uniform("alpha_cutoff.feather", f);
 }
 
 void Material::set_debug_name(const string &name)
@@ -93,6 +100,7 @@ Material::Loader::Loader(Material &m, Collection &c):
 void Material::Loader::init_actions()
 {
        add("alpha_cutoff", &Loader::alpha_cutoff);
+       add("alpha_cutoff", &Loader::alpha_cutoff_feather);
        add("sampler", &Loader::sampler);
 }
 
@@ -101,6 +109,12 @@ void Material::Loader::alpha_cutoff(float a)
        obj.set_alpha_cutoff(a);
 }
 
+void Material::Loader::alpha_cutoff_feather(float a, float f)
+{
+       obj.set_alpha_cutoff(a);
+       obj.set_alpha_feather(f);
+}
+
 void Material::Loader::sampler(const string &name)
 {
        obj.sampler = &get_collection().get<Sampler>(name);