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#include "core/event.h"
#include "core/renderer.h"
#include "core/window.h"
#include "internal/utils.h"
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
/* Get human-readable EGL error string */
const char *egl_error_string(EGLint error) {
switch (error) {
case EGL_SUCCESS:
return "EGL_SUCCESS";
case EGL_NOT_INITIALIZED:
return "EGL_NOT_INITIALIZED";
case EGL_BAD_ACCESS:
return "EGL_BAD_ACCESS";
case EGL_BAD_ALLOC:
return "EGL_BAD_ALLOC";
case EGL_BAD_ATTRIBUTE:
return "EGL_BAD_ATTRIBUTE";
case EGL_BAD_CONFIG:
return "EGL_BAD_CONFIG";
case EGL_BAD_CONTEXT:
return "EGL_BAD_CONTEXT";
case EGL_BAD_CURRENT_SURFACE:
return "EGL_BAD_CURRENT_SURFACE";
case EGL_BAD_DISPLAY:
return "EGL_BAD_DISPLAY";
case EGL_BAD_MATCH:
return "EGL_BAD_MATCH";
case EGL_BAD_NATIVE_PIXMAP:
return "EGL_BAD_NATIVE_PIXMAP";
case EGL_BAD_NATIVE_WINDOW:
return "EGL_BAD_NATIVE_WINDOW";
case EGL_BAD_PARAMETER:
return "EGL_BAD_PARAMETER";
case EGL_BAD_SURFACE:
return "EGL_BAD_SURFACE";
case EGL_CONTEXT_LOST:
return "EGL_CONTEXT_LOST";
default:
return "UNKNOWN_EGL_ERROR";
}
}
/* Crash with EGL error information
* */
void crash_egl(const char *expr, const char *file, int line) {
EGLint error = eglGetError();
fprintf(stderr, "EGL Error at %s:%d\n", file, line);
fprintf(stderr, "Expression: %s\n", expr);
fprintf(stderr, "Error code: 0x%x (%s)\n", error, egl_error_string(error));
abort();
}
/* Macro for checking EGL boolean returns (EGL_TRUE/EGL_FALSE) */
#define assert_egl(expr) \
do { \
if (!(expr)) \
crash_egl(#expr, __FILE__, __LINE__); \
} while (0)
void RuimInitEGL(RuimToplevel *toplevel) {
RuimSurfaceEGL ruimSurface;
EGLint version_major, version_minor;
EGLConfig config;
EGLint num_config;
struct toplevel_x11 *x11_toplevel = (struct toplevel_x11 *)toplevel->data;
struct backend_x11 *x11_backend =
(struct backend_x11 *)toplevel->backend->data;
EGLint constraints[] = {
EGL_SURFACE_TYPE,
EGL_WINDOW_BIT,
EGL_RENDERABLE_TYPE,
EGL_OPENGL_ES3_BIT,
EGL_RED_SIZE,
8,
EGL_GREEN_SIZE,
8,
EGL_BLUE_SIZE,
8,
EGL_ALPHA_SIZE,
8,
EGL_DEPTH_SIZE,
24,
EGL_NONE,
};
/* egl-contexts collect all state descriptions needed required for operation
*/
EGLint ctxattr[] = {EGL_CONTEXT_MAJOR_VERSION, 3, EGL_CONTEXT_MINOR_VERSION,
0, EGL_NONE};
const char *client_extensions =
eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS);
if (!client_extensions) {
abort();
}
if (!strstr(client_extensions, "EGL_EXT_platform_xcb")) {
abort();
}
ruimSurface.display = eglGetPlatformDisplay(EGL_PLATFORM_XCB_EXT,
x11_backend->connection, NULL);
assert_egl(ruimSurface.display);
assert_egl(
eglInitialize(ruimSurface.display, &version_major, &version_minor));
;
assert_egl(eglChooseConfig(ruimSurface.display, constraints, &config, 1,
&num_config));
assert_egl(eglBindAPI(EGL_OPENGL_ES_API));
ruimSurface.surface = eglCreatePlatformWindowSurface(
ruimSurface.display, config, &x11_toplevel->window, NULL);
assert_egl(ruimSurface.surface);
ruimSurface.context =
eglCreateContext(ruimSurface.display, config, EGL_NO_CONTEXT, ctxattr);
assert_egl(ruimSurface.context);
assert_egl(eglMakeCurrent(ruimSurface.display, ruimSurface.surface,
ruimSurface.surface, ruimSurface.context));
assert_egl(eglSwapInterval(ruimSurface.display, 1));
x11_backend->surface = ruimSurface;
}
EGLBoolean RuimSwapEGL(RuimToplevel *toplevel) {
struct backend_x11 *x11_backend =
(struct backend_x11 *)toplevel->backend->data;
return eglSwapBuffers(x11_backend->surface.display,
x11_backend->surface.surface);
}
void RuimDeinitEGL(RuimSurfaceEGL *eglCtx) {
assert_egl(eglMakeCurrent(eglCtx->display, EGL_NO_SURFACE, EGL_NO_SURFACE,
EGL_NO_CONTEXT));
assert_egl(eglDestroyContext(eglCtx->display, eglCtx->context));
assert_egl(eglDestroySurface(eglCtx->display, eglCtx->surface));
assert_egl(eglTerminate(eglCtx->display));
}
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