helpers: Move GL extension cache object to glfeatures.

So it can be used in the wrappers too.

2 files changed, 67 insertions, 1 deletions

diff --git a/helpers/glfeatures.cpp b/helpers/glfeatures.cpp
index 0a815a56..69d93325 100644
--- a/helpers/glfeatures.cpp
+++ b/helpers/glfeatures.cpp
@@ -322,4 +322,42 @@ Extensions::has(const char *string) const
 }
 
 
+Features::Features(void)
+{
+    memset(this, 0, sizeof *this);
+}
+
+
+void
+Features::load(const Profile & profile, const Extensions & ext)
+{
+    ES = profile.es();
+    core = profile.core;
+
+    ARB_draw_buffers = !ES;
+
+    // Check extensions we use.
+    ARB_sampler_objects = ext.has("GL_ARB_sampler_objects");
+    ARB_get_program_binary = ext.has("GL_ARB_get_program_binary");
+    KHR_debug = !ES && ext.has("GL_KHR_debug");
+    EXT_debug_label = ext.has("GL_EXT_debug_label");
+    ARB_direct_state_access = ext.has("GL_ARB_direct_state_access");
+    ARB_shader_image_load_store = ext.has("GL_ARB_shader_image_load_store");
+    ARB_shader_storage_buffer_object = ext.has("GL_ARB_shader_storage_buffer_object");
+    ARB_program_interface_query = ext.has("GL_ARB_program_interface_query");
+
+    NV_read_depth_stencil = ES && ext.has("GL_NV_read_depth_stencil");
+}
+
+
+void
+Features::load(void)
+{
+    glfeatures::Profile profile = glfeatures::getCurrentContextProfile();
+    glfeatures::Extensions exts;
+    exts.getCurrentContextExtensions(profile);
+    load(profile, exts);
+}
+
+
 } /* namespace glfeatures */
diff --git a/helpers/glfeatures.hpp b/helpers/glfeatures.hpp
index 4eabc764..a85a5927 100644
--- a/helpers/glfeatures.hpp
+++ b/helpers/glfeatures.hpp
@@ -125,10 +125,12 @@ Profile
 getCurrentContextProfile(void);
 
 
-struct Extensions
+class Extensions
 {
+private:
     std::set<std::string> strings;
 
+public:
     void
     getCurrentContextExtensions(const Profile & profile);
 
@@ -137,5 +139,31 @@ struct Extensions
 };
 
 
+struct Features
+{
+    unsigned ES:1;
+    unsigned core:1;
+
+    unsigned ARB_draw_buffers:1;
+    unsigned ARB_sampler_objects:1;
+    unsigned ARB_get_program_binary:1;
+    unsigned KHR_debug:1;
+    unsigned EXT_debug_label:1;
+    unsigned NV_read_depth_stencil:1;  /* ES only */
+    unsigned ARB_shader_image_load_store:1;
+    unsigned ARB_direct_state_access:1;
+    unsigned ARB_shader_storage_buffer_object:1;
+    unsigned ARB_program_interface_query:1;
+
+    Features(void);
+
+    void
+    load(const Profile & profile, const Extensions & exts);
+
+    // Load from current context
+    void
+    load(void);
+};
+
 
 } /* namespace glfeatures */