the revival, entityx

1 files changed, 79 insertions, 0 deletions

diff --git a/include/render.hpp b/include/render.hpp
new file mode 100644
index 0000000..0a2adcd
--- /dev/null
+++ b/include/render.hpp
@@ -0,0 +1,79 @@
+#ifndef RENDER_HPP_
+#define RENDER_HPP_
+
+#include <vector>
+
+#include <GL/glew.h>
+#include <SDL2/SDL_opengl.h>
+
+#include <common.hpp>
+#include <shader_utils.hpp>
+
+/**
+ * @class Shader
+ * @brief Handles a texture shader, allowing it's use in the program.
+ */
+class Shader {
+public:
+    GLuint shader;
+    GLint  coord;
+    GLint  tex;
+    std::vector<GLint> uniform;
+
+    void create(const char *vert, const char *frag) {
+        shader = create_program(vert, frag);
+     	coord  = get_attrib(shader, "coord2d");
+     	tex    = get_attrib(shader, "tex_coord");
+    }
+
+    inline void addUniform(const char *name) {
+         uniform.push_back(get_uniform(shader, name));
+    }
+
+    inline void use(void) {
+        glUseProgram(shader);
+    }
+
+    inline void unuse(void) {
+        glUseProgram(0);
+    }
+
+    inline void enable(void) {
+        glEnableVertexAttribArray(coord);
+        glEnableVertexAttribArray(tex);
+    }
+
+    inline void disable(void) {
+        glDisableVertexAttribArray(coord);
+        glDisableVertexAttribArray(tex);
+    }
+
+    ~Shader(void) {
+        uniform.clear();
+    }
+};
+
+typedef enum {
+    WU_texture = 0,
+    WU_ortho,
+    WU_tex_color,
+    WU_transform,
+    WU_ambient,
+    WU_light_impact,
+    WU_light,
+    WU_light_color,
+    WU_light_size
+} WorldUniform;
+
+namespace Render {
+    extern Shader worldShader;
+    extern Shader textShader;
+
+    void initShaders(void);
+
+    void useShader(Shader *s);
+
+    void drawRect(vec2 ll, vec2 ur, float z);
+}
+
+#endif // RENDER_HPP_