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#include "config.h"
#ifdef USE_OPENGLES2
#include <GLES2/gl2.h>
#include <EGL/egl.h>
#else
#include <GLES/gl.h>
#include <GLES/egl.h>
#endif
#include <glib.h>
#include "graphics_opengl.h"
#include "debug.h"
struct graphics_opengl_platform {
EGLSurface eglwindow;
EGLDisplay egldisplay;
EGLConfig config[1];
EGLContext context;
};
static EGLint attributeList[] = {
EGL_RED_SIZE, 8,
EGL_ALPHA_SIZE, 8,
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
#ifdef USE_OPENGLES2
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
#endif
EGL_NONE
};
EGLint aEGLContextAttributes[] = {
#ifdef USE_OPENGLES2
EGL_CONTEXT_CLIENT_VERSION, 2,
#endif
EGL_NONE
};
static void
graphics_opengl_egl_destroy(struct graphics_opengl_platform *egl)
{
g_free(egl);
}
static void
graphics_opengl_egl_swap_buffers(struct graphics_opengl_platform *egl)
{
eglSwapBuffers(egl->egldisplay, egl->eglwindow);
}
struct graphics_opengl_platform_methods graphics_opengl_egl_methods = {
graphics_opengl_egl_destroy,
graphics_opengl_egl_swap_buffers,
};
struct graphics_opengl_platform *
graphics_opengl_egl_new(void *display, void *window, struct graphics_opengl_platform_methods **methods)
{
struct graphics_opengl_platform *ret=g_new0(struct graphics_opengl_platform,1);
EGLint major,minor,nconfig;
*methods=&graphics_opengl_egl_methods;
ret->egldisplay = eglGetDisplay((EGLNativeDisplayType)display);
if (!ret->egldisplay) {
dbg(lvl_error, "can't get display\n");
goto error;
}
if (!eglInitialize(ret->egldisplay, &major, &minor)) {
dbg(lvl_error, "eglInitialize failed\n");
goto error;
}
dbg(lvl_debug,"eglInitialize ok with version %d.%d\n",major,minor);
eglBindAPI(EGL_OPENGL_ES_API);
if (!eglChooseConfig(ret->egldisplay, attributeList, ret->config, sizeof(ret->config)/sizeof(EGLConfig), &nconfig)) {
dbg(lvl_error, "eglChooseConfig failed\n");
goto error;
}
if (nconfig != 1) {
dbg(lvl_error, "unexpected number of configs %d\n",nconfig);
goto error;
}
ret->eglwindow = eglCreateWindowSurface(ret->egldisplay, ret->config[0], (NativeWindowType) window, NULL);
if (ret->eglwindow == EGL_NO_SURFACE) {
dbg(lvl_error, "eglCreateWindowSurface failed");
goto error;
}
ret->context = eglCreateContext(ret->egldisplay, ret->config[0], EGL_NO_CONTEXT, aEGLContextAttributes);
if (ret->context == EGL_NO_CONTEXT) {
dbg(lvl_error, "eglCreateContext failed");
goto error;
}
eglMakeCurrent(ret->egldisplay, ret->eglwindow, ret->eglwindow, ret->context);
return ret;
error:
graphics_opengl_egl_destroy(ret);
return NULL;
}
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