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#include <stdlib.h>
#include <stdbool.h>
#include "gl/glad/glad.h"
#include <GLFW/glfw3.h>
#include <lua.h>
#include <honeysuckle.h>
#include "gl.h"
/* needs to be here because glad uses macros to define glBufferData */
#ifdef HONEY_TEST_H
#undef glBufferData
#define glBufferData mock_glBufferData_
#endif
int gl_init(lua_State *L);
int glad_init(lua_State *L);
int gl_terminate(lua_State *L);
int gl_get_error(lua_State *L);
int gl_enable(lua_State *L);
int gl_disable(lua_State *L);
void setup_gl(lua_State *L, int honey_index)
{
int gl_index = hs_create_table(L,
/* functions */
hs_str_cfunc("Init", gl_init),
hs_str_cfunc("InitGlad", glad_init),
hs_str_cfunc("Terminate", gl_terminate),
hs_str_cfunc("GetError", gl_get_error),
hs_str_cfunc("Enable", gl_enable),
hs_str_cfunc("Disable", gl_disable),
/******** enums ********/
/* data types */
hs_str_int("UNSIGNED_BYTE", GL_UNSIGNED_BYTE),
hs_str_int("UNSIGNED_INT", GL_UNSIGNED_INT),
hs_str_int("INT", GL_INT),
hs_str_int("FLOAT", GL_FLOAT),
/* error types */
hs_str_int("NO_ERROR", GL_NO_ERROR),
hs_str_int("INVALID_ENUM", GL_INVALID_ENUM),
hs_str_int("INVALID_VALUE", GL_INVALID_VALUE),
hs_str_int("INVALID_OPERATION", GL_INVALID_OPERATION),
hs_str_int("INVALID_FRAMEBUFFER_OPERATION", GL_INVALID_FRAMEBUFFER_OPERATION),
hs_str_int("OUT_OF_MEMORY", GL_OUT_OF_MEMORY),
/* opengl capabilities */
hs_str_int("DEPTH_TEST", GL_DEPTH_TEST),
);
setup_shader(L, gl_index);
setup_drawing(L, gl_index);
setup_data(L, gl_index);
setup_texture(L, gl_index);
lua_setfield(L, honey_index, "gl");
}
int gl_init(lua_State *L)
{
if (!glfwInit()) {
hs_throw_error(L, "failed to initialize GLFW");
}
return 0;
}
int glad_init(lua_State *L)
{
if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress)) {
hs_throw_error(L, "failed to initialize GLAD");
}
}
int gl_terminate(lua_State *L)
{
glfwTerminate();
return 0;
}
int gl_get_error(lua_State *L)
{
lua_pushinteger(L, glGetError());
return 1;
}
int gl_enable(lua_State *L)
{
lua_Integer cap;
hs_parse_args(L, hs_int(cap));
glEnable(cap);
return 0;
}
int gl_disable(lua_State *L)
{
lua_Integer cap;
hs_parse_args(L, hs_int(cap));
glDisable(cap);
return 0;
}
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