From 715bbaf459b88575e11d90ec16bad3841bafd259 Mon Sep 17 00:00:00 2001
From: HampusM <hampus@hampusmat.com>
Date: Sat, 7 Oct 2023 20:52:09 +0200
Subject: feat(engine): add ability to render triangles

---
 engine/src/object.rs | 69 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 engine/src/object.rs

(limited to 'engine/src/object.rs')

diff --git a/engine/src/object.rs b/engine/src/object.rs
new file mode 100644
index 0000000..ff84127
--- /dev/null
+++ b/engine/src/object.rs
@@ -0,0 +1,69 @@
+use crate::renderer::Renderable;
+use crate::shader::{Kind as ShaderKind, Program as ShaderProgram, Shader};
+
+pub struct Object
+{
+    renderable: Renderable,
+}
+
+impl Object
+{
+    /// Returns a new `Object`.
+    ///
+    /// # Errors
+    /// Will return `Err` if shader creation fails or if shader program linking fails.
+    pub fn new(vertices: &[f32]) -> Result<Self, Error>
+    {
+        let vertex_shader = Shader::new(ShaderKind::Vertex);
+
+        vertex_shader
+            .set_source(include_str!("../vertex.glsl"))
+            .map_err(Error::CreateVertexShaderFailed)?;
+
+        vertex_shader
+            .compile()
+            .map_err(Error::CreateVertexShaderFailed)?;
+
+        let fragment_shader = Shader::new(ShaderKind::Fragment);
+
+        fragment_shader
+            .set_source(include_str!("../fragment.glsl"))
+            .map_err(Error::CreateFragmentShaderFailed)?;
+
+        fragment_shader
+            .compile()
+            .map_err(Error::CreateFragmentShaderFailed)?;
+
+        let shader_program = ShaderProgram::new();
+
+        shader_program.attach(&vertex_shader);
+        shader_program.attach(&fragment_shader);
+
+        shader_program
+            .link()
+            .map_err(Error::LinkShaderProgramFailed)?;
+
+        let renderable = Renderable::new(shader_program, vertices);
+
+        Ok(Self { renderable })
+    }
+
+    pub(crate) fn renderable(&self) -> &Renderable
+    {
+        &self.renderable
+    }
+}
+
+/// Object error
+#[derive(Debug, thiserror::Error)]
+pub enum Error
+{
+    #[error("Failed to create vertex shader")]
+    CreateVertexShaderFailed(#[source] crate::shader::Error),
+
+    #[error("Failed to create fragment shader")]
+    CreateFragmentShaderFailed(#[source] crate::shader::Error),
+
+    #[error("Failed to link shader program")]
+    LinkShaderProgramFailed(#[source] crate::shader::Error),
+}
-- 
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