gistfile1.cpp

#ifndef __SHTEST_BATCH_H__
#define __SHTEST_BATCH_H__

#include <stdarg.h>
#include <glm/glm.hpp>
#include <glm/gtc/matrix_transform.hpp>
#include "glutil.h"

class SpriteBatch {
public:
    SpriteBatch(GLsizei width, GLsizei height, size_t capacity);
    ~SpriteBatch();
    void begin();
    void end();
    void update_matrices();
    void set_color(const GLfloat red, const GLfloat green, const GLfloat blue);
    void set_color(const GLfloat red, const GLfloat green, const GLfloat blue, const GLfloat alpha);
    void draw(GLuint texture, GLfloat x, GLfloat y, GLfloat width, GLfloat height);
    void draw(GLuint texture, GLfloat src_x, GLfloat src_y, GLfloat src_width, GLfloat src_height, GLfloat x, GLfloat y, GLfloat width, GLfloat height);
private:
    GLuint u_proj_view, u_tex, a_pos, a_uv, a_col;
    GLfloat r, g, b, a;
    glm::mat4 proj;
    glm::mat4 view;
    glm::mat4 proj_view;
    float* data;
    GLuint current_texture;
    GLuint shader;
    GLuint vao;
    bool active;
    size_t size;
    size_t idx;
    GLsizei v_idx;
    void render();
    void flush();
    void put(size_t indices, size_t count, const GLfloat* vertices);
};

#endif