1 files changed, 71 insertions, 0 deletions
diff --git a/wave-sim/src/graphics/shader.h b/wave-sim/src/graphics/shader.h
new file mode 100644
index 0000000..08f6654
--- /dev/null
+++ b/wave-sim/src/graphics/shader.h
@@ -0,0 +1,71 @@
+#pragma once
+
+#include <map>
+#include <string>
+#include <tuple>
+#include <vector>
+
+#include <GL/glew.h>
+#include "Eigen/Dense"
+#include "util/unsupportedeigenthing/OpenGLSupport"
+
+
+class Shader {
+public:
+    Shader(const std::string &vertexPath,
+           const std::string &fragmentPath);
+
+    virtual ~Shader();
+
+    Shader(Shader &that)            = delete;
+    Shader& operator=(Shader &that) = delete;
+    Shader(Shader &&that);
+    Shader& operator=(Shader &&that);
+
+    // Basic Usage
+    GLuint getProgramID() const { return m_programID; }
+    void   bind()   const;
+    void   unbind() const;
+    GLuint getUniformLocation(std::string name);
+    GLuint getEnumeratedUniformLocation(std::string name, int index);
+
+    // Setting Uniforms
+    void setUniform(const std::string &name, float f);
+    void setUniform(const std::string &name, int   i);
+    void setUniform(const std::string &name, bool  b);
+    template<typename type, int n, int m>
+    void setUniform(const std::string &name, const Eigen::Matrix<type, n, m> &mat)
+    {
+        glUniform(m_uniforms[name], mat);
+    }
+
+
+private:
+    // Creating the Program
+    void createProgramID();
+    void buildShaderProgramFromShaders(const std::vector<GLuint> &shaders);
+
+    // Creating Shaders From Filepaths
+    std::string getFileContents(std::string path);
+    GLuint createShaderFromString(const std::string &str, GLenum shaderType);
+
+    // Discovering attributes/uniforms/textures
+    void discoverShaderData();
+    void discoverAttributes();
+    void discoverUniforms();
+    bool isUniformArray(const GLchar *name , GLsizei nameLength);
+    bool isTexture(GLenum type);
+    void addUniform(const std::string &name);
+    void addUniformArray(const std::string &name, size_t size);
+    void addTexture(const std::string &name);
+
+    // Identifies the shader program associated with this shader
+    GLuint m_programID;
+
+    // Collections of known attributes/uniforms/textures
+    std::map<std::string, GLuint>                     m_attributes;
+    std::map<std::string, GLuint>                     m_uniforms;
+    std::map<std::tuple<std::string, size_t>, GLuint> m_uniformArrays;
+    std::map<std::string, GLuint>                     m_textureLocations; // name to uniform location
+    std::map<GLuint, GLuint>                          m_textureSlots;     // uniform location to texture slot
+};