opengl: more bindings

src/main.zig

@@ -57,16 +57,8 @@ pub fn main() !void {
     try vao.bind();
     var binding = try vbo.bind(c.GL_ARRAY_BUFFER);
     try binding.setData(&vertices, c.GL_STATIC_DRAW);
-
-    c.glVertexAttribPointer(
-        0,
-        3,
-        c.GL_FLOAT,
-        c.GL_FALSE,
-        3 * @sizeOf(f32),
-        null,
-    );
-    c.glEnableVertexAttribArray(0);
+    try binding.vertexAttribPointer(0, 3, c.GL_FLOAT, false, 3 * @sizeOf(f32), null);
+    try binding.enableVertexAttribArray(0);
 
     binding.unbind();
     try gl.VertexArray.unbind();

src/opengl/Buffer.zig

@@ -52,11 +52,26 @@ pub const Binding = struct {
         try errors.getError();
     }
 
+    pub inline fn enableVertexAttribArray(_: Binding, idx: c.GLuint) !void {
+        c.glEnableVertexAttribArray(idx);
+    }
+
+    pub inline fn vertexAttribPointer(
+        _: Binding,
+        idx: c.GLuint,
+        size: c.GLint,
+        typ: c.GLenum,
+        normalized: bool,
+        stride: c.GLsizei,
+        ptr: ?*const anyopaque,
+    ) !void {
+        const normalized_c: c.GLboolean = if (normalized) c.GL_TRUE else c.GL_FALSE;
+        c.glVertexAttribPointer(idx, size, typ, normalized_c, stride, ptr);
+        try errors.getError();
+    }
+
     pub inline fn unbind(b: *Binding) void {
         c.glBindBuffer(b.target, 0);
-
-        // By setting this to undefined, this ensures that any future calls
-        // error in safe build modes.
         b.* = undefined;
     }
 };