1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
#include "window.h"
#include "ui/inputHandler.h"
#include <GL/glew.h>
#include <optional>
#include <stdexcept>
static SDL_GLContext
SDL_GL_CreateContextAndGlewInit(SDL_Window * w)
{
auto ctx = SDL_GL_CreateContext(w);
if (glewInit() != GLEW_OK) {
throw std::runtime_error {"Glew failed to initialize!"};
}
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
return ctx;
}
using GL_Context = std::remove_pointer_t<SDL_GLContext>;
using SDL_GLContextPtr = wrapped_ptrt<GL_Context, SDL_GL_CreateContextAndGlewInit, SDL_GL_DeleteContext>;
Window::Window(size_t width, size_t height, const std::string & title) :
m_window {title.c_str(), static_cast<int>(SDL_WINDOWPOS_CENTERED), static_cast<int>(SDL_WINDOWPOS_CENTERED),
static_cast<int>(width), static_cast<int>(height), static_cast<Uint32>(SDL_WINDOW_OPENGL)},
uiShader {[this](auto w) {
// must call glContent before creating the shader
glContext();
return w;
}(width),
height}
{
}
void
Window::clear(float r, float g, float b, float a) const
{
glClearColor(r, g, b, a);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
}
void
Window::swapBuffers() const
{
SDL_GL_SwapWindow(m_window);
}
bool
Window::handleInput(const SDL_Event & e)
{
if (SDL_GetWindowID(m_window) == e.window.windowID) {
inputStack.applyOne(&InputHandler::handleInput, e);
return true;
}
return false;
}
SDL_GLContext
Window::glContext() const
{
static SDL_GLContextPtr m_glContext {m_window};
return m_glContext;
}
void
Window::refresh(const GameState * gameState) const
{
SDL_GL_MakeCurrent(m_window, glContext());
clear(0.0F, 0.0F, 0.0F, 1.0F);
render(gameState);
swapBuffers();
}
|
