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#include "graphics.h"
#include <EGL/egl.h>
#include <EGL/eglplatform.h>
#include "utils.h"
#include "wlstate.h"
#define WAYC_OPENGL_MAJOR 4
#define WAYC_OPENGL_MINOR 6
#define WAYC_COLOR_BITS 8
/* clang-format off */
static EGLint WAYC_EGL_ATTRS[] = {
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_RED_SIZE, WAYC_COLOR_BITS,
EGL_GREEN_SIZE, WAYC_COLOR_BITS,
EGL_BLUE_SIZE, WAYC_COLOR_BITS,
EGL_ALPHA_SIZE, WAYC_COLOR_BITS,
EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
EGL_NONE
};
static EGLint WAYC_OGL_ATTRS[] = {
EGL_CONTEXT_MAJOR_VERSION, WAYC_OPENGL_MAJOR,
EGL_CONTEXT_MINOR_VERSION, WAYC_OPENGL_MINOR,
EGL_NONE
};
/* clang-format on */
static bool wayc_graphics_config(EGLDisplay display, EGLConfig* config) {
wayc_notnull(display);
wayc_notnull(config);
EGLint nconfs = 0;
if (!eglChooseConfig(display, WAYC_EGL_ATTRS, config, 1, &nconfs))
return false;
return nconfs > 0;
}
enum graphics_error_e wayc_graphics_init(struct graphics_s* graphics,
struct wlstate_s* state) {
wayc_notnull(graphics);
wayc_notnull(state);
EGLDisplay display = eglGetDisplay(state->display);
if (display == EGL_NO_DISPLAY) return GRAPHICS_ERROR_DISPLAY;
if (!eglInitialize(display, nullptr, nullptr)) {
eglTerminate(display);
return GRAPHICS_ERROR_DISPLAY;
}
if (!eglBindAPI(EGL_OPENGL_API)) {
eglTerminate(display);
return GRAPHICS_ERROR_BIND;
}
EGLConfig config;
if (!wayc_graphics_config(display, &config)) {
eglTerminate(display);
return GRAPHICS_ERROR_CONFIG;
}
EGLContext context =
eglCreateContext(display, config, EGL_NO_CONTEXT, WAYC_OGL_ATTRS);
if (context == EGL_NO_CONTEXT) {
eglDestroyContext(display, context);
eglTerminate(display);
return GRAPHICS_ERROR_CONTEXT;
}
graphics->display = display;
graphics->config = config;
graphics->context = context;
return GRAPHICS_ERROR_NONE;
}
void wayc_graphics_deinit(struct graphics_s* graphics) {
wayc_notnull(graphics);
if (graphics->display == nullptr || graphics->context == nullptr) return;
eglDestroyContext(graphics->display, graphics->context);
eglTerminate(graphics->display);
graphics->display = nullptr;
graphics->context = nullptr;
}
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