feat: start of a basic rendering backend

1 files changed, 66 insertions, 0 deletions

diff --git a/src/rendering/shader.cpp b/src/rendering/shader.cpp
new file mode 100644
index 0000000..10f6c49
--- /dev/null
+++ b/src/rendering/shader.cpp
@@ -0,0 +1,66 @@
+#include "shader.h"
+#include "renderer.h"
+#include "platform/opengl/opengl_shader.h"
+#include <memory>
+
+namespace Donut
+{
+    Shader* Shader::create(const std::string& filepath) 
+    {
+        switch (Renderer::get_api())
+        {
+            case RendererAPI::API::OpenGL:
+                return new OpenGLShader(filepath);
+            default:
+                return nullptr;
+        }
+    }
+
+    Shader* Shader::create(const std::string& name, const std::string& vertex_src, const std::string& fragment_src)
+    {
+        switch (Renderer::get_api()) 
+        {
+            case RendererAPI::API::OpenGL:
+                return new OpenGLShader(name, vertex_src, fragment_src);
+            default:
+                return nullptr;
+        }
+    }
+
+    void ShaderLibrary::add(const std::shared_ptr<Shader>& shader)
+    {
+        auto& name = shader->get_name();
+        add(name, shader);
+    }
+
+    void ShaderLibrary::add(const std::string& name, const std::shared_ptr<Shader>& shader)
+    {
+        m_shaders[name] = shader;
+    }
+
+    std::shared_ptr<Shader> ShaderLibrary::load(const std::string& filepath)
+    {
+        auto shader = std::shared_ptr<Shader>(Shader::create(filepath));
+        add(shader);
+        return shader;
+    }
+
+    std::shared_ptr<Shader> ShaderLibrary::load(const std::string& name, const std::string& filepath)
+    {
+        auto shader = std::shared_ptr<Shader>(Shader::create(filepath));
+        add(name, shader);
+        return shader;
+    }
+
+    std::shared_ptr<Shader> ShaderLibrary::get(const std::string& name)
+    {
+        if (exists(name))
+            return m_shaders[name];
+        return nullptr;
+    }
+
+    bool ShaderLibrary::exists(const std::string& name) const
+    {
+        return m_shaders.find(name) != m_shaders.end();
+    }
+};