diff --git a/inox2d-opengl/src/gl_buffer.rs b/inox2d-opengl/src/gl_buffer.rs
index a21d346..6b7ba8d 100644
--- a/inox2d-opengl/src/gl_buffer.rs
+++ b/inox2d-opengl/src/gl_buffer.rs
@@ -4,11 +4,12 @@ use inox2d::render::RenderCtx;
 
 use super::OpenglRendererError;
 
-unsafe fn upload_array_to_gl<T>(gl: &glow::Context, array: &[T], target: u32, usage: u32) {
+unsafe fn upload_array_to_gl<T>(gl: &glow::Context, array: &[T], target: u32, usage: u32) -> glow::Buffer {
 	let bytes: &[u8] = core::slice::from_raw_parts(array.as_ptr() as *const u8, std::mem::size_of_val(array));
 	let buffer = gl.create_buffer().unwrap();
 	gl.bind_buffer(target, Some(buffer));
 	gl.buffer_data_u8_slice(target, bytes, usage);
+	buffer
 }
 
 unsafe fn reupload_array_to_gl<T>(gl: &glow::Context, array: &[T], target: u32, start_idx: usize, end_idx: usize) {
@@ -22,8 +23,8 @@ pub trait RenderCtxOpenglExt {
 		&self,
 		gl: &glow::Context,
 		vao: glow::VertexArray,
-	) -> Result<glow::VertexArray, OpenglRendererError>;
-	unsafe fn upload_deforms_to_gl(&self, gl: &glow::Context);
+	) -> Result<glow::Buffer, OpenglRendererError>;
+	unsafe fn upload_deforms_to_gl(&self, gl: &glow::Context, buffer: glow::Buffer);
 }
 
 impl RenderCtxOpenglExt for RenderCtx {
@@ -40,7 +41,7 @@ impl RenderCtxOpenglExt for RenderCtx {
 		&self,
 		gl: &glow::Context,
 		vao: glow::VertexArray,
-	) -> Result<glow::VertexArray, OpenglRendererError> {
+	) -> Result<glow::Buffer, OpenglRendererError> {
 		gl.bind_vertex_array(Some(vao));
 
 		upload_array_to_gl(gl, &self.vertex_buffers.verts, glow::ARRAY_BUFFER, glow::STATIC_DRAW);
@@ -51,7 +52,8 @@ impl RenderCtxOpenglExt for RenderCtx {
 		gl.vertex_attrib_pointer_f32(1, 2, glow::FLOAT, false, 0, 0);
 		gl.enable_vertex_attrib_array(1);
 
-		upload_array_to_gl(gl, &self.vertex_buffers.deforms, glow::ARRAY_BUFFER, glow::DYNAMIC_DRAW);
+		let deform_buffer =
+			upload_array_to_gl(gl, &self.vertex_buffers.deforms, glow::ARRAY_BUFFER, glow::DYNAMIC_DRAW);
 		gl.vertex_attrib_pointer_f32(2, 2, glow::FLOAT, false, 0, 0);
 		gl.enable_vertex_attrib_array(2);
 
@@ -62,14 +64,16 @@ impl RenderCtxOpenglExt for RenderCtx {
 			glow::STATIC_DRAW,
 		);
 
-		Ok(vao)
+		Ok(deform_buffer)
 	}
 
 	/// # Safety
 	///
 	/// unsafe as initiating GL calls. can be safely called for multiple times,
 	/// but only needed once after deform update and before rendering.
-	unsafe fn upload_deforms_to_gl(&self, gl: &glow::Context) {
+	unsafe fn upload_deforms_to_gl(&self, gl: &glow::Context, buffer: glow::Buffer) {
+		gl.bind_buffer(glow::ARRAY_BUFFER, Some(buffer));
+
 		reupload_array_to_gl(
 			gl,
 			&self.vertex_buffers.deforms,
diff --git a/inox2d-opengl/src/lib.rs b/inox2d-opengl/src/lib.rs
index f6e5f4f..fe504c5 100644
--- a/inox2d-opengl/src/lib.rs
+++ b/inox2d-opengl/src/lib.rs
@@ -129,6 +129,7 @@ pub struct OpenglRenderer {
 	part_mask_shader: PartMaskShader,
 	composite_shader: CompositeShader,
 	composite_mask_shader: CompositeMaskShader,
+	deform_buffer: Option<glow::Buffer>,
 
 	textures: Vec<Texture>,
 }
@@ -183,6 +184,7 @@ impl OpenglRenderer {
 			composite_mask_shader,
 
 			textures: Vec::new(),
+			deform_buffer: None,
 		};
 
 		// Set emission strength once (it doesn't change anywhere else)
@@ -360,7 +362,7 @@ impl InoxRenderer for OpenglRenderer {
 	type Error = OpenglRendererError;
 
 	fn prepare(&mut self, model: &Model) -> Result<(), Self::Error> {
-		unsafe { model.puppet.render_ctx.setup_gl_buffers(&self.gl, self.vao)? };
+		self.deform_buffer = Some(unsafe { model.puppet.render_ctx.setup_gl_buffers(&self.gl, self.vao)? });
 
 		match self.upload_model_textures(&model.textures) {
 			Ok(_) => Ok(()),
@@ -420,7 +422,10 @@ impl InoxRenderer for OpenglRenderer {
 	fn render(&self, puppet: &Puppet) {
 		let gl = &self.gl;
 		unsafe {
-			puppet.render_ctx.upload_deforms_to_gl(gl);
+			if let Some(deform_buffer) = self.deform_buffer {
+				puppet.render_ctx.upload_deforms_to_gl(gl, deform_buffer);
+			}
+
 			gl.enable(glow::BLEND);
 			gl.disable(glow::DEPTH_TEST);
 		}
diff --git a/inox2d-opengl/src/texture.rs b/inox2d-opengl/src/texture.rs
index 090b186..ba286cd 100644
--- a/inox2d-opengl/src/texture.rs
+++ b/inox2d-opengl/src/texture.rs
@@ -28,7 +28,11 @@ impl Texture {
 			gl.tex_parameter_i32(glow::TEXTURE_2D, glow::TEXTURE_MAG_FILTER, glow::LINEAR as i32);
 			gl.tex_parameter_i32(glow::TEXTURE_2D, glow::TEXTURE_WRAP_S, glow::CLAMP_TO_BORDER as i32);
 			gl.tex_parameter_i32(glow::TEXTURE_2D, glow::TEXTURE_WRAP_T, glow::CLAMP_TO_BORDER as i32);
+
+			// Texture parameters for f32 slices are not supported on WASM yet.
+			#[cfg(not(target_arch = "wasm32"))]
 			gl.tex_parameter_f32_slice(glow::TEXTURE_2D, glow::TEXTURE_BORDER_COLOR, &[0.0; 4]);
+
 			gl.tex_image_2d(
 				glow::TEXTURE_2D,
 				0,