[feat] add some more EGL functions that SFWK needsHEADmain

1 files changed, 84 insertions, 0 deletions

diff --git a/src/saffron_window.c b/src/saffron_window.c
index 085ee20..022c5e4 100644
--- a/src/saffron_window.c
+++ b/src/saffron_window.c
@@ -10,6 +10,90 @@
 #include <saffron.h>
 #include <SDL3/SDL_egl.h>
 #include <SDL3/SDL_opengles2.h>
+#include <EGL/egl.h>
+
+EGLDisplay saffron_window_get_egl_display(SaffronWindow* window) {
+    if (!window || !window->gl_context) {
+        return EGL_NO_DISPLAY;
+    }
+    
+    EGLDisplay display = eglGetCurrentDisplay();
+    
+    if (display == EGL_NO_DISPLAY) {
+        display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+    }
+    
+    return display;
+}
+
+EGLConfig saffron_window_get_egl_config(SaffronWindow* window) {
+    if (!window || !window->gl_context) {
+        return NULL;
+    }
+    
+    EGLDisplay display = saffron_window_get_egl_display(window);
+    if (display == EGL_NO_DISPLAY) {
+        return NULL;
+    }
+    
+    EGLConfig config = NULL;
+    EGLint config_id;
+    
+    if (eglQueryContext(display, eglGetCurrentContext(), EGL_CONFIG_ID, &config_id)) {
+        EGLint num_configs;
+        EGLConfig configs[32];
+        EGLint attribs[] = {
+            EGL_CONFIG_ID, config_id,
+            EGL_NONE
+        };
+        
+        if (eglChooseConfig(display, attribs, configs, 32, &num_configs) && num_configs > 0) {
+            config = configs[0];
+        }
+    }
+    
+    if (!config) {
+        EGLint config_attribs[] = {
+            EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
+            EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
+            EGL_RED_SIZE, 8,
+            EGL_GREEN_SIZE, 8,
+            EGL_BLUE_SIZE, 8,
+            EGL_ALPHA_SIZE, 8,
+            EGL_DEPTH_SIZE, 24,
+            EGL_STENCIL_SIZE, 8,
+            EGL_NONE
+        };
+        
+        EGLint num_configs;
+        if (eglChooseConfig(display, config_attribs, &config, 1, &num_configs) && num_configs > 0) {
+            return config;
+        }
+        return NULL;
+    }
+    
+    return config;
+}
+
+EGLSurface saffron_window_get_egl_surface(SaffronWindow* window) {
+    if (!window || !window->gl_context) {
+        return EGL_NO_SURFACE;
+    }
+    
+    EGLSurface surface = eglGetCurrentSurface(EGL_DRAW);
+    
+    if (surface == EGL_NO_SURFACE) {
+        EGLDisplay display = saffron_window_get_egl_display(window);
+        EGLConfig config = saffron_window_get_egl_config(window);
+        
+        if (display != EGL_NO_DISPLAY && config) {
+            surface = eglCreateWindowSurface(display, config, 
+                                            (EGLNativeWindowType)window->sdl_window, NULL);
+        }
+    }
+    
+    return surface;
+}
 
 SaffronWindow* saffron_window_new(const char* title, int w, int h) {
 	SaffronWindow* window = malloc(sizeof(SaffronWindow));