Create shader using c++ code

1 files changed, 81 insertions, 0 deletions

diff --git a/include/RenderBackend/OpenGL/ShaderVec.hpp b/include/RenderBackend/OpenGL/ShaderVec.hpp
new file mode 100644
index 0000000..10e628c
--- /dev/null
+++ b/include/RenderBackend/OpenGL/ShaderVec.hpp
@@ -0,0 +1,81 @@
+#pragma once
+
+#include "../../types.hpp"
+#include <string>
+
+namespace amalgine
+{
+    class VertexShader;
+    class PixelShader;
+    
+    class ShaderInputVec2
+    {
+        friend class VertexShader;
+    public:
+        const std::string& getName() const;
+    private:
+        ShaderInputVec2(VertexShader *_vertexShader, i32 _attributeIndex) : 
+            vertexShader(_vertexShader), 
+            attributeIndex(_attributeIndex)
+        {
+            
+        }
+    private:
+        VertexShader *vertexShader;
+        i32 attributeIndex;
+    };
+    
+    class ShaderVec4
+    {
+    public:
+        ShaderVec4(f32 x = 0.0f, f32 y = 0.0f, f32 z = 0.0f, f32 w = 0.0f)
+        {
+            result = "vec4(";
+            result += std::to_string(x);
+            result += ", ";
+            result += std::to_string(y);
+            result += ", ";
+            result += std::to_string(z);
+            result += ", ";
+            result += std::to_string(w);
+            result += ")";
+        }
+        
+        ShaderVec4(const ShaderInputVec2 &vec2, f32 z = 0.0f, f32 w = 0.0f)
+        {
+            result = "vec4(";
+            result += vec2.getName();
+            result += ", ";
+            result += std::to_string(z);
+            result += ", ";
+            result += std::to_string(w);
+            result += ")";
+        }
+        
+        const std::string& getOutput() const
+        {
+            return result;
+        }
+    private:
+        std::string result;
+    };
+    
+    class ShaderOutputVec4
+    {
+        friend class PixelShader;
+    public:
+        const std::string& getName() const;
+        
+        void operator=(const ShaderVec4 &shaderVec4);
+    private:
+        ShaderOutputVec4(PixelShader *_pixelShader, i32 _attributeIndex) : 
+            pixelShader(_pixelShader), 
+            attributeIndex(_attributeIndex)
+        {
+            
+        }
+    private:
+        PixelShader *pixelShader;
+        i32 attributeIndex;
+    };
+}