From 23a37b2cdd8ffde8bb85a4159888bf3a7ec35966 Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Mon, 4 Nov 2019 00:50:45 +0100
Subject: Use external shaders instead of generating shader code from c++
 code...

---
 include/RenderBackend/OpenGL/Shader.hpp | 81 ++++++---------------------------
 1 file changed, 14 insertions(+), 67 deletions(-)

(limited to 'include/RenderBackend/OpenGL/Shader.hpp')

diff --git a/include/RenderBackend/OpenGL/Shader.hpp b/include/RenderBackend/OpenGL/Shader.hpp
index 7aecc4e..0f802ec 100644
--- a/include/RenderBackend/OpenGL/Shader.hpp
+++ b/include/RenderBackend/OpenGL/Shader.hpp
@@ -1,79 +1,26 @@
 #pragma once
 
-#include "../../DataView.hpp"
-#include "../../utils.hpp"
 #include "../../Result.hpp"
-#include "CommonShader.hpp"
-#include "ShaderVec.hpp"
-#include <string>
-#include <unordered_map>
-#include <vector>
-#include <stdexcept>
-#include <functional>
+#include "../../utils.hpp"
+#include "../../types.hpp"
+#include <memory>
 
 namespace amalgine {
-    class ShaderTooManyAttributes : public std::runtime_error
-    {
-    public:
-        ShaderTooManyAttributes(i32 maxAttributes);
-    };
-    
-    class ShaderAttributeAlreadyDefined : public std::runtime_error
-    {
-    public:
-        ShaderAttributeAlreadyDefined(const std::string &attributeName);
-    };
-    
-    class ShaderInvalidAttributeName : public std::runtime_error
-    {
-    public:
-        ShaderInvalidAttributeName(const std::string &attributeName);
-    };
-    
-    class ShaderFunctionAlreadyDefined : public std::runtime_error
-    {
-    public:
-        ShaderFunctionAlreadyDefined(const std::string &funcName);
-    };
-    
     class Shader
     {
         DISABLE_COPY(Shader)
         friend class ShaderProgram;
     public:
-        Shader();
-        
-        const std::string& getOutputAttributeName(i32 attributeIndex);
-        const std::string& getInputAttributeName(i32 attributeIndex) const;
-        AttributeType getInputAttributeType(i32 attributeIndex) const;
-        ShaderOutputVec4 defineOutputVec4(const std::string &name);
-        ShaderGlobalVec3 defineGlobalVec3(const std::string &name);
-        ShaderInputVec2 defineInputVec2(const std::string &name);
-        i32 defineInputVariable(const std::string &variableName, const char *typeName);
-        
-        void assign(const ShaderOutputVec4 &lhsVariable, const ShaderVec4 &rhsVariable);
-    protected:
-        void writeHeader(const std::string &code);
-        void writeBody(const std::string &code);
-        std::string build() const;
-        
-        /*
-         * Throws ShaderTooManyAttributes if too many attributes are defined for the platform.
-         * Throws ShaderAttributeAlreadyDefined if a attribute with the same name has already been defined.
-         */
-        i32 defineOutputVariable(const std::string &variableName, const char *typeName);
-    protected:
-        std::string header;
-        std::string body;
-        int inputLocationCounter;
-        int outputLocationCounter;
-        // TOOD: Verify if this is correct. This same variable is used for both output and input variables
-        i32 maxAttribs; // Could make this static
-        std::unordered_map<std::string, i32> inputAttributes;
-        std::vector<ShaderAttribute> inputAttributeNames;
-        std::unordered_map<std::string, i32> outputAttributes;
-        std::vector<ShaderAttribute> outputAttributeNames;
-        std::unordered_map<std::string, ShaderGlobalVec> uniforms;
-        bool mainFuncDefined;
+        enum class Type {
+            VERTEX,
+            PIXEL
+        };
+
+        ~Shader();
+
+        static Result<std::unique_ptr<Shader>> compile(Type type, const char *str, int size);
+        const u32 id;
+    private:
+        Shader(u32 shader_id);
     };
 }
-- 
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