diff --git a/vlib/sokol/gfx/enums.v b/vlib/sokol/gfx/enums.v
index 5fea066fdb..d4aef911af 100644
--- a/vlib/sokol/gfx/enums.v
+++ b/vlib/sokol/gfx/enums.v
@@ -82,7 +82,7 @@ pub enum PixelFormat {
     etc2_rg11
     etc2_rg11sn
 
-    num
+    _num
 }
 
 pub enum ResourceState {
diff --git a/vlib/sokol/gfx/gfx.v b/vlib/sokol/gfx/gfx.v
index 4fe5aa3710..586e72b403 100644
--- a/vlib/sokol/gfx/gfx.v
+++ b/vlib/sokol/gfx/gfx.v
@@ -82,6 +82,11 @@ pub fn append_buffer(buf C.sg_buffer, ptr voidptr, num_bytes int) int {
 	return C.sg_append_buffer(buf, ptr, num_bytes)
 }
 
+[inline]
+pub fn query_buffer_overflow(buf C.sg_buffer) bool {
+	return C.sg_query_buffer_overflow(buf)
+}
+
 // rendering functions
 [inline]
 pub fn begin_default_pass(actions &C.sg_pass_action, width int, height int) {
@@ -133,9 +138,56 @@ pub fn commit() {
 	C.sg_commit()
 }
 
+// getting information
 [inline]
-pub fn query_buffer_overflow(buf C.sg_buffer) bool {
-	return C.sg_query_buffer_overflow(buf)
+pub fn query_desc() C.sg_desc {
+	return C.sg_query_desc()
+}
+
+[inline]
+pub fn query_backend() Backend {
+	return C.sg_query_backend()
+}
+
+[inline]
+pub fn query_features() C.sg_features {
+	return C.sg_query_features()
+}
+
+[inline]
+pub fn query_limits() C.sg_limits {
+	return C.sg_query_limits()
+}
+
+[inline]
+pub fn query_pixelformat(fmt PixelFormat) C.sg_pixelformat_info {
+	return C.sg_query_pixelformat(fmt)
+}
+
+/* get current state of a resource (INITIAL, ALLOC, VALID, FAILED, INVALID) */
+[inline]
+pub fn query_buffer_state(buf C.sg_buffer) C.sg_resource_state {
+	return sg_query_buffer_state(buf)
+}
+
+[inline]
+pub fn query_image_state(img C.sg_image) C.sg_resource_state {
+	return sg_query_image_state(img)
+}
+
+[inline]
+pub fn query_shader_state(shd C.sg_shader) C.sg_resource_state {
+	return sg_query_shader_state(shd)
+}
+
+[inline]
+pub fn query_pipeline_state(pip C.sg_pipeline) C.sg_resource_state {
+	return sg_query_pipeline_state(pip)
+}
+
+[inline]
+pub fn query_pass_state(pass C.sg_pass) C.sg_resource_state {
+	return sg_query_pass_state(pass)
 }
 
 // get runtime information about a resource
@@ -164,32 +216,6 @@ pub fn query_pass_info(pass C.sg_pass) C.sg_pass_info {
 	return C.sg_query_pass_info(pass)
 }
 
-// getting information
-[inline]
-pub fn query_desc() C.sg_desc {
-	return C.sg_query_desc()
-}
-
-[inline]
-pub fn query_backend() Backend {
-	return C.sg_query_backend()
-}
-
-[inline]
-pub fn query_features() C.sg_features {
-	return C.sg_query_features()
-}
-
-[inline]
-pub fn query_limits() C.sg_limits {
-	return C.sg_query_limits()
-}
-
-[inline]
-pub fn query_pixelformat(fmt PixelFormat) C.sg_pixelformat_info {
-	return C.sg_query_pixelformat(fmt)
-}
-
 // get resource creation desc struct with their default values replaced
 [inline]
 pub fn query_buffer_defaults(desc &C.sg_buffer) C.sg_buffer_desc {
@@ -216,3 +242,18 @@ pub fn query_pass_defaults(desc &C.sg_pass) C.sg_pass_desc {
 	return C.sg_query_pass_defaults(desc)
 }
 
+/* rendering contexts (optional) */
+[inline]
+pub fn setup_context() C.sg_context {
+	return C.sg_setup_context()
+}
+
+[inline]
+pub fn activate_context(ctx_id C.sg_context) {
+	C.sg_activate_context(ctx_id)
+}
+
+[inline]
+pub fn discard_context(ctx_id C.sg_context) {
+	C.sg_discard_context(ctx_id)
+}
\ No newline at end of file
diff --git a/vlib/sokol/gfx/gfx_funcs.v b/vlib/sokol/gfx/gfx_funcs.v
index 25459ef700..8a3a8b37c5 100644
--- a/vlib/sokol/gfx/gfx_funcs.v
+++ b/vlib/sokol/gfx/gfx_funcs.v
@@ -19,6 +19,7 @@ fn C.sg_destroy_pass(pass C.sg_pass)
 fn C.sg_update_buffer(buf C.sg_buffer, ptr voidptr, num_bytes int)
 fn C.sg_update_image(img C.sg_image, content &C.sg_image_content)
 fn C.sg_append_buffer(buf C.sg_buffer, ptr voidptr, num_bytes int) int
+fn C.sg_query_buffer_overflow(buf C.sg_buffer) bool
 
 // rendering functions
 fn C.sg_begin_default_pass(actions &C.sg_pass_action, width int, height int)
@@ -32,7 +33,19 @@ fn C.sg_draw(base_element int, num_elements int, num_instances int)
 fn C.sg_end_pass()
 fn C.sg_commit()
 
-fn C.sg_query_buffer_overflow(buf C.sg_buffer) bool
+// getting information
+fn C.sg_query_desc() C.sg_desc
+fn C.sg_query_backend() Backend
+fn C.sg_query_features() C.sg_features
+fn C.sg_query_limits() C.sg_limits
+fn C.sg_query_pixelformat(fmt PixelFormat) C.sg_pixelformat_info
+
+/* get current state of a resource (INITIAL, ALLOC, VALID, FAILED, INVALID) */
+fn C.sg_query_buffer_state(buf C.sg_buffer) C.sg_resource_state
+fn C.sg_query_image_state(img C.sg_image) C.sg_resource_state
+fn C.sg_query_shader_state(shd C.sg_shader) C.sg_resource_state
+fn C.sg_query_pipeline_state(pip C.sg_pipeline) C.sg_resource_state
+fn C.sg_query_pass_state(pass C.sg_pass) C.sg_resource_state
 
 // get runtime information about a resource
 fn C.sg_query_buffer_info(buf C.sg_buffer) C.sg_buffer_info
@@ -41,16 +54,14 @@ fn C.sg_query_shader_info(shd C.sg_shader) C.sg_shader_info
 fn C.sg_query_pipeline_info(pip C.sg_pipeline) C.sg_pipeline_info
 fn C.sg_query_pass_info(pass C.sg_pass) C.sg_pass_info
 
-// getting information
-fn C.sg_query_desc() C.sg_desc
-fn C.sg_query_backend() Backend
-fn C.sg_query_features() C.sg_features
-fn C.sg_query_limits() C.sg_limits
-fn C.sg_query_pixelformat(fmt PixelFormat) C.sg_pixelformat_info
-
 // get resource creation desc struct with their default values replaced
 fn C.sg_query_buffer_defaults(desc &C.sg_buffer) C.sg_buffer_desc
 fn C.sg_query_image_defaults(desc &C.sg_image) C.sg_image_desc
 fn C.sg_query_shader_defaults(desc &C.sg_shader) C.sg_shader_desc
 fn C.sg_query_pipeline_defaults(desc &C.sg_pipeline) C.sg_pipeline_desc
 fn C.sg_query_pass_defaults(desc &C.sg_pass) C.sg_pass_desc
+
+/* rendering contexts (optional) */
+fn C.sg_setup_context() C.sg_context
+fn C.sg_activate_context(ctx_id C.sg_context)
+fn C.sg_discard_context(ctx_id C.sg_context)
\ No newline at end of file
diff --git a/vlib/sokol/gfx/gfx_structs.v b/vlib/sokol/gfx/gfx_structs.v
index ad061cf1ce..25c9fbf778 100644
--- a/vlib/sokol/gfx/gfx_structs.v
+++ b/vlib/sokol/gfx/gfx_structs.v
@@ -325,13 +325,13 @@ pub mut:
 
 pub struct C.sg_features {
 pub:
-    instancing bool
-    origin_top_left bool
-    multiple_render_targets bool
-    msaa_render_targets bool
-    imagetype_3d bool          /* creation of SG_IMAGETYPE_3D images is supported */
-    imagetype_array bool       /* creation of SG_IMAGETYPE_ARRAY images is supported */
-    image_clamp_to_border bool /* border color and clamp-to-border UV-wrap mode is supported */
+    instancing bool              /* hardware instancing supported */
+    origin_top_left bool         /* framebuffer and texture origin is in top left corner */
+    multiple_render_targets bool /* offscreen render passes can have multiple render targets attached */
+    msaa_render_targets bool     /* offscreen render passes support MSAA antialiasing */
+    imagetype_3d bool            /* creation of SG_IMAGETYPE_3D images is supported */
+    imagetype_array bool         /* creation of SG_IMAGETYPE_ARRAY images is supported */
+    image_clamp_to_border bool   /* border color and clamp-to-border UV-wrap mode is supported */
 }
 
 pub struct C.sg_limits {
@@ -339,8 +339,8 @@ pub:
     max_image_size_2d u32         /* max width/height of SG_IMAGETYPE_2D images */
     max_image_size_cube u32       /* max width/height of SG_IMAGETYPE_CUBE images */
     max_image_size_3d u32         /* max width/height/depth of SG_IMAGETYPE_3D images */
-    max_image_size_array u32
-    max_image_array_layers u32
+    max_image_size_array u32      /* max width/height pf SG_IMAGETYPE_ARRAY images */
+    max_image_array_layers u32    /* max number of layers in SG_IMAGETYPE_ARRAY images */
     max_vertex_attrs u32          /* <= SG_MAX_VERTEX_ATTRIBUTES (only on some GLES2 impls) */
 }
 
diff --git a/vlib/sokol/sapp/enums.v b/vlib/sokol/sapp/enums.v
index 8644b67f51..3cb20b9ff8 100644
--- a/vlib/sokol/sapp/enums.v
+++ b/vlib/sokol/sapp/enums.v
@@ -33,6 +33,13 @@ pub enum MouseButton {
     middle = 2
 }
 
+pub enum Modifier {
+    shift = 1   //(1<<0)
+    ctrl = 2    //(1<<1)
+    alt =  4    //(1<<2)
+    super = 8   //(1<<3)
+}
+
 pub enum KeyCode {
     invalid          = 0
     space            = 32
diff --git a/vlib/sokol/sapp/sapp.v b/vlib/sokol/sapp/sapp.v
index 332a7228e2..a204117e16 100644
--- a/vlib/sokol/sapp/sapp.v
+++ b/vlib/sokol/sapp/sapp.v
@@ -186,3 +186,8 @@ pub fn win32_get_hwnd() voidptr {
 	return C.sapp_win32_get_hwnd()
 }
 
+/* Android: get native activity handle */
+[inline]
+pub fn android_get_native_activity() voidptr {
+	return C.sapp_android_get_native_activity()
+}
diff --git a/vlib/sokol/sapp/sapp_funcs.v b/vlib/sokol/sapp/sapp_funcs.v
index 6427f339d5..12d6615fd3 100644
--- a/vlib/sokol/sapp/sapp_funcs.v
+++ b/vlib/sokol/sapp/sapp_funcs.v
@@ -67,3 +67,5 @@ fn C.sapp_d3d11_get_render_target_view() voidptr
 fn C.sapp_d3d11_get_depth_stencil_view() voidptr
 /* Win32: get the HWND window handle */
 fn C.sapp_win32_get_hwnd() voidptr
+/* Android: get native activity handle */
+fn C.sapp_android_get_native_activity() voidptr
\ No newline at end of file
diff --git a/vlib/sokol/sapp/sapp_structs.v b/vlib/sokol/sapp/sapp_structs.v
index e6ed0882da..d0fdcaa9bb 100644
--- a/vlib/sokol/sapp/sapp_structs.v
+++ b/vlib/sokol/sapp/sapp_structs.v
@@ -5,7 +5,7 @@ pub:
 	init_cb fn()					/* these are the user-provided callbacks without user data */
 	frame_cb fn()
 	cleanup_cb fn()
-	event_cb fn( voidptr) //&sapp_event)
+	event_cb fn(&C.sapp_event) //&sapp_event)
 	fail_cb fn(byteptr)
 
     user_data voidptr                /* these are the user-provided callbacks with user data */
@@ -13,7 +13,7 @@ pub:
 	frame_userdata_cb fn(voidptr)
 	cleanup_userdata_cb fn(voidptr)
 	event_userdata_cb fn(&C.sapp_event, voidptr)
-	fail_userdata_cb fn(voidptr)
+	fail_userdata_cb fn(byteptr,voidptr)
 
     width int                          /* the preferred width of the window / canvas */
     height int                         /* the preferred height of the window / canvas */