1 files changed, 56 insertions, 8 deletions

diff --git a/Unicity.Renderer/Shader.cs b/Unicity.Renderer/Shader.cs
index 6ee0b33..31dcef7 100644
--- a/Unicity.Renderer/Shader.cs
+++ b/Unicity.Renderer/Shader.cs
@@ -1,31 +1,79 @@
 using System;
+using OpenTK;
 using OpenTK.Graphics.OpenGL4;
 
 namespace Unicity.Renderer
 {
     class Shader
     {
-        //int program = 0;
+        int program = 0;
 
         public Shader(string vertexCode, string fragmentCode)
         {
-            int vertex = GL.CreateShader(ShaderType.VertexShader);
+            int vertexShader = GL.CreateShader(ShaderType.VertexShader);
+            int fragmentShader = GL.CreateShader(ShaderType.FragmentShader);
 
-            GL.ShaderSource(vertex, vertexCode);
-            GL.CompileShader(vertex);
+            GL.ShaderSource(vertexShader, vertexCode);
+            GL.ShaderSource(fragmentShader, fragmentCode);
 
-            if (!Compiled(vertex))
+            GL.CompileShader(vertexShader);
+            GL.CompileShader(fragmentShader);
+
+            if (!ShaderCompiled(vertexShader))
+            {
+                GL.DeleteShader(vertexShader);
+                GL.DeleteBuffer(fragmentShader);
+                throw new Exception("Failed to compile vertex shader: " + GL.GetShaderInfoLog(vertexShader));
+            }
+
+            if (!ShaderCompiled(fragmentShader))
             {
-                GL.DeleteShader(vertex);
-                throw new Exception("Failed to compile vertex shader: " + GL.GetShaderInfoLog(vertex));
+                GL.DeleteShader(vertexShader);
+                GL.DeleteBuffer(fragmentShader);
+                throw new Exception("Failed to compile frgament shader: " + GL.GetShaderInfoLog(fragmentShader));
+            }
+
+            program = GL.CreateProgram();
+            GL.AttachShader(program, vertexShader);
+            GL.AttachShader(program, fragmentShader);
+
+            GL.LinkProgram(program);
+
+            GL.DetachShader(program, vertexShader);
+            GL.DetachShader(program, fragmentShader);
+            GL.DeleteShader(vertexShader);
+            GL.DeleteShader(fragmentShader);
+
+            if (!ProgramCompiled(program))
+            {
+                GL.DeleteProgram(program);
+                throw new Exception("Failed to link shader program: " + GL.GetProgramInfoLog(program));
             }
         }
 
-        private bool Compiled(int shader)
+        public void Use()
+        {
+            GL.UseProgram(program);
+        }
+
+        public void SetUniform(string name, Vector4 value)
+        {
+            int location = GL.GetUniformLocation(program, name);
+            GL.Uniform4(location, value);
+        }
+
+        private bool ShaderCompiled(int shader)
         {
             int[] output = new int[1];
             GL.GetShader(shader, ShaderParameter.CompileStatus, output);
             return output[0] != 0;
         }
+
+        private bool ProgramCompiled(int program)
+        {
+            int[] output = new int[1];
+            GL.GetProgram(program, GetProgramParameterName.LinkStatus, output);
+            return output[0] != 0;
+        }
     }
 }