LibGL: Add Shader and Program class stubs

Author: https://github.com/sunverwerth
Commit: https://github.com/SerenityOS/serenity/commit/b975569a40
Pull-request: https://github.com/SerenityOS/serenity/pull/16225
Reviewed-by: https://github.com/ADKaster ✅
Reviewed-by: https://github.com/gmta ✅
Reviewed-by: https://github.com/supercomputer7

Userland/Libraries/LibGL/CMakeLists.txt

@@ -11,6 +11,8 @@ set(SOURCES
     Matrix.cpp
     NameAllocator.cpp
     Shader.cpp
+    Shaders/Program.cpp
+    Shaders/Shader.cpp
     Stencil.cpp
     Tex/Texture2D.cpp
     Texture.cpp

Userland/Libraries/LibGL/Shaders/Program.cpp

@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2022, Stephan Unverwerth <s.unverwerth@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibGL/Shaders/Program.h>
+
+namespace GL {
+
+NonnullRefPtr<Program> Program::create()
+{
+    return adopt_ref(*new Program());
+}
+
+ErrorOr<void> Program::attach_shader(Shader&)
+{
+    TODO();
+    return {};
+}
+
+ErrorOr<void> Program::link()
+{
+    TODO();
+    return {};
+}
+
+}

Userland/Libraries/LibGL/Shaders/Program.h

@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2022, Stephan Unverwerth <s.unverwerth@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/NonnullRefPtr.h>
+#include <AK/RefCounted.h>
+#include <AK/Vector.h>
+#include <LibGL/Shaders/Shader.h>
+
+namespace GL {
+
+class Program final : public RefCounted<Program> {
+public:
+    static NonnullRefPtr<Program> create();
+
+    ErrorOr<void> attach_shader(Shader&);
+    ErrorOr<void> link();
+
+private:
+    Vector<NonnullRefPtr<Shader>> m_vertex_shaders;
+    Vector<NonnullRefPtr<Shader>> m_fragment_shaders;
+};
+
+}

Userland/Libraries/LibGL/Shaders/Shader.cpp

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2022, Stephan Unverwerth <s.unverwerth@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <AK/String.h>
+#include <LibGL/Shaders/Shader.h>
+
+namespace GL {
+
+NonnullRefPtr<Shader> Shader::create(GLenum shader_type)
+{
+    return adopt_ref(*new Shader(shader_type));
+}
+
+ErrorOr<void> Shader::add_source(StringView source_code)
+{
+    auto source_code_content = TRY(String::from_utf8(source_code));
+    TRY(m_sources.try_append(move(source_code_content)));
+    return {};
+}
+
+ErrorOr<void> Shader::compile()
+{
+    TODO();
+    return {};
+}
+
+}

Userland/Libraries/LibGL/Shaders/Shader.h

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2022, Stephan Unverwerth <s.unverwerth@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Error.h>
+#include <AK/RefCounted.h>
+#include <AK/RefPtr.h>
+#include <AK/String.h>
+#include <AK/StringView.h>
+#include <AK/Vector.h>
+#include <LibGL/GL/glplatform.h>
+
+namespace GL {
+
+class Shader final : public RefCounted<Shader> {
+public:
+    static NonnullRefPtr<Shader> create(GLenum shader_type);
+
+    void clear_sources() { m_sources.clear(); }
+    ErrorOr<void> add_source(StringView source_code);
+    ErrorOr<void> compile();
+    GLenum type() const { return m_type; }
+
+private:
+    explicit Shader(GLenum shader_type)
+        : m_type { shader_type }
+    {
+    }
+
+    Vector<String> m_sources;
+    GLenum m_type;
+};
+
+}