Added IRenderable, removed shader programs and allow more nuanced control of render passes, UI items are now rendered same as other scene item components.

src/dawnopengl/display/shader/Shader.hpp

@@ -0,0 +1,84 @@
+// Copyright (c) 2022 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "display/shader/_Shader.hpp"
+#include "dawnopengl.hpp"
+#include "display/Color.hpp"
+#include "debug/debug.hpp"
+
+#include "ShaderParameterBuffer.hpp"
+
+typedef GLuint shaderparameter_t;
+
+namespace Dawn {
+  class Shader : public IShader<shaderparameter_t> {
+    private:
+      /** Pointer to an uploaded vertex shader program */
+      GLuint shaderVertex = -1;
+
+      /** Pointer to an uploaded fragment shader program */
+      GLuint shaderFrag = -1;
+
+      /** Pointer to an uploaded shader program linked */
+      GLuint shaderProgram = -1;
+
+    protected:
+      /**
+       * Compiles a GLSL/HLSL shader and stores it on the GPU, updates the
+       * underlying pointers for you.
+       * 
+       * @param vertexShader The string source of the vertex shader.
+       * @param fragmentShader The string source of the fragment shader.
+       */
+      void compileShader(
+        std::map<std::string, int32_t> attributeLocations,
+        std::string vertexShader,
+        std::string fragmentShader
+      );
+
+      /**
+       * Typically HLSL only, this method allows you to specify where vbo 
+       * attributes are bound. Typically 0 for positions, 1 for coordinates,
+       * etc.
+       * 
+       * @param name Attribute name in the HLSL shader.
+       * @param location Index pointing to which location it is to be bound to.
+       */
+      void bindAttributeLocation(std::string name, int32_t location);
+
+    public:
+      /**
+       * Locate a shader parameter by its name.
+       * 
+       * @param name Name of the parameter to get.
+       * @return The shader parameter.
+       */
+      shaderparameter_t getParameterByName(std::string name);
+
+      /**
+       * Locate a shader buffer parameter set by its name.
+       * 
+       * @param name Name of the buffer to get.
+       * @return The shader buffer.
+       */
+      shaderbufferlocation_t getBufferLocationByName(std::string name);
+
+      virtual void compile() = 0;
+      void bind() override;
+      void setParameterBuffer(shaderbufferlocation_t location, shaderbufferslot_t slot);
+      void setMatrix(shaderparameter_t parameter, glm::mat4 matrix) override;
+      void setBoolean(shaderparameter_t parameter, bool_t value) override;
+      void setColor(shaderparameter_t parameter, struct Color color) override;
+      void setVector3(shaderparameter_t parameter, glm::vec3 vector) override;
+      void setTexture(shaderparameter_t parameter, textureslot_t texture) override;
+      void setFloat(shaderparameter_t parameter, float_t value) override;
+
+      /**
+       * Destroys and deletes the shader from the GPU.
+       */
+      virtual ~Shader();
+  };
+}