LibWeb/WebGL: Implement OES_vertex_array_object extension

Author: https://github.com/Lubrsi Commit: 442f0b9a13 Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/3239 Reviewed-by: https://github.com/awesomekling Reviewed-by: https://github.com/kalenikaliaksandr
2025-06-25 19:51:59 +00:00 · 2025-01-09 19:17:19 +00:00 · 2025-01-09 19:17:19 +00:00 · 442f0b9a13 · 2025-01-21 20:37:57 +00:00
commit 442f0b9a13
parent 58942e1137
10 changed files with 244 additions and 0 deletions
--- a/Libraries/LibWeb/WebGL/OESVertexArrayObject.cpp
+++ b/Libraries/LibWeb/WebGL/OESVertexArrayObject.cpp
@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2025, Luke Wilde <luke@ladybird.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibJS/Runtime/Realm.h>
+#include <LibWeb/Bindings/OESVertexArrayObjectPrototype.h>
+#include <LibWeb/Bindings/Intrinsics.h>
+#include <LibWeb/WebGL/OESVertexArrayObject.h>
+#include <LibWeb/WebGL/OpenGLContext.h>
+#include <LibWeb/WebGL/WebGLRenderingContext.h>
+
+#define GL_GLEXT_PROTOTYPES 1
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+
+namespace Web::WebGL {
+
+GC_DEFINE_ALLOCATOR(OESVertexArrayObject);
+
+JS::ThrowCompletionOr<GC::Ptr<OESVertexArrayObject>> OESVertexArrayObject::create(JS::Realm& realm, GC::Ref<WebGLRenderingContext> context)
+{
+    return realm.create<OESVertexArrayObject>(realm, context);
+}
+
+OESVertexArrayObject::OESVertexArrayObject(JS::Realm& realm, GC::Ref<WebGLRenderingContext> context)
+    : PlatformObject(realm)
+    , m_context(context)
+{
+    m_context->context().request_extension("GL_OES_vertex_array_object");
+}
+
+GC::Ref<WebGLVertexArrayObjectOES> OESVertexArrayObject::create_vertex_array_oes()
+{
+    m_context->context().make_current();
+
+    GLuint handle = 0;
+    glGenVertexArraysOES(1, &handle);
+    return WebGLVertexArrayObjectOES::create(realm(), m_context, handle);
+}
+
+void OESVertexArrayObject::delete_vertex_array_oes(GC::Root<WebGLVertexArrayObjectOES> array_object)
+{
+    m_context->context().make_current();
+
+    GLuint vertex_array_handle = 0;
+    if (array_object) {
+        auto handle_or_error = array_object->handle(m_context.ptr());
+        if (handle_or_error.is_error()) {
+            // FIXME: m_context->set_error(GL_INVALID_OPERATION);
+            return;
+        }
+        vertex_array_handle = handle_or_error.release_value();
+    }
+
+    glDeleteVertexArraysOES(1, &vertex_array_handle);
+}
+
+bool OESVertexArrayObject::is_vertex_array_oes(GC::Root<WebGLVertexArrayObjectOES> array_object)
+{
+    m_context->context().make_current();
+
+    GLuint vertex_array_handle = 0;
+    if (array_object) {
+        auto handle_or_error = array_object->handle(m_context.ptr());
+        if (handle_or_error.is_error()) {
+            return false;
+        }
+        vertex_array_handle = handle_or_error.release_value();
+    }
+
+    return glIsVertexArrayOES(vertex_array_handle) == GL_TRUE;
+}
+
+void OESVertexArrayObject::bind_vertex_array_oes(GC::Root<WebGLVertexArrayObjectOES> array_object)
+{
+    m_context->context().make_current();
+
+    GLuint vertex_array_handle = 0;
+    if (array_object) {
+        auto handle_or_error = array_object->handle(m_context.ptr());
+        if (handle_or_error.is_error()) {
+            // FIXME: m_context->set_error(GL_INVALID_OPERATION);
+            return;
+        }
+        vertex_array_handle = handle_or_error.release_value();
+    }
+
+    glBindVertexArrayOES(vertex_array_handle);
+}
+
+void OESVertexArrayObject::initialize(JS::Realm& realm)
+{
+    Base::initialize(realm);
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(OESVertexArrayObject);
+}
+
+void OESVertexArrayObject::visit_edges(Visitor& visitor)
+{
+    Base::visit_edges(visitor);
+    visitor.visit(m_context);
+}
+
+}