micqdf/opengl-cpp
1
0
Fork 0
mirror of https://github.com/MichaelFisher1997/opengl-cpp.git synced 2025-04-27 14:13:10 +00:00
Code Issues Packages Projects Releases Wiki Activity

Added GLEW

Browse Source
This commit is contained in:
MichaelFisher1997 2025-01-05 13:17:26 +00:00
parent 4cd0930d2f
commit 64bedd56c7
2 changed files with 28 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
src/sdl.cpp
View File

@ -1,3 +1,4 @@
#include <GL/glew.h> // Include GLEW before <SDL2/SDL.h>?
#include "sdl.hpp"
#include <iostream>
@ -8,7 +9,9 @@ SdlWindow::SdlWindow(const char* title, int width, int height)
m_isFullscreen(false),
m_width(width),
m_height(height),
m_glContext(nullptr)
m_glContext(nullptr),
m_windowedWidth(width),
m_windowedHeight(height)
{
// 1. Set attributes
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
@ -37,10 +40,12 @@ SdlWindow::SdlWindow(const char* title, int width, int height)
// 4. Optionally init GLEW (if not on macOS core profile)
#ifndef __APPLE__
glewExperimental = GL_TRUE;
GLenum glewErr = glewInit();
if (glewInit() != GLEW_OK) {
std::cerr << "Failed to init GLEW" << std::endl;
std::cerr << "Failed to init GLEW" << glewGetErrorString(glewErr) << std::endl;
return;
}
glGetError();
#endif
// 5. Set vsync (optional)
@ -48,7 +53,6 @@ SdlWindow::SdlWindow(const char* title, int width, int height)
// 6. Mark as running
m_isRunning = true;
m_isRunning = true;
}
SdlWindow::~SdlWindow() {
@ -111,6 +115,11 @@ SDL_Event event;
// Update your internal width/height (if you keep track)
m_width = newWidth;
m_height = newHeight;
// If we are in windowed mode, update the "windowed" size.
if (!m_isFullscreen) {
m_windowedWidth = newWidth;
m_windowedHeight = newHeight;
}
// Update the OpenGL viewport
glViewport(0, 0, newWidth, newHeight);
@ -137,22 +146,26 @@ void SdlWindow::render() {
SDL_GL_SwapWindow(m_window);
}
void SdlWindow::change_res(int newWidth, int newHeight)
{
// Just call SDL_SetWindowSize
if (m_window) {
SDL_SetWindowSize(m_window, newWidth, newHeight);
}
}
void SdlWindow::setFullscreen(bool fullscreen) {
if (m_window) {
m_isFullscreen = fullscreen;
if (m_isFullscreen) {
// Going TO fullscreen:
// (Optional) store the current size again, in case it changed
m_windowedWidth = m_width;
m_windowedHeight = m_height;
SDL_SetWindowFullscreen(m_window, SDL_WINDOW_FULLSCREEN_DESKTOP);
} else {
// Returning FROM fullscreen:
SDL_SetWindowFullscreen(m_window, 0); // return to windowed
change_res(m_width, m_height);
// Now restore the window’s old size
SDL_SetWindowSize(m_window, m_windowedWidth, m_windowedHeight);
// Update m_width, m_height so they reflect the new (restored) size
m_width = m_windowedWidth;
m_height = m_windowedHeight;
}
}
}

4
src/sdl.hpp
View File

@ -24,7 +24,6 @@ public:
// Run the main loop
void run();
void change_res(int newWidth, int newHeight);
void setFullscreen(bool fullscreen);
private:
@ -35,8 +34,11 @@ private:
bool m_isFullscreen;
int m_width;
int m_height;
int m_windowedWidth; // stored width before fullscreen
int m_windowedHeight; // stored height before fullscreen
SDL_GLContext m_glContext;
// Private methods
void processEvents();
void update();