graphics stuff

2 files changed, 87 insertions, 2 deletions

diff --git a/src/graphics.cc b/src/graphics.cc
index 0e34213..9027400 100644
--- a/src/graphics.cc
+++ b/src/graphics.cc
@@ -3,6 +3,8 @@
 #include <EGL/egl.h>
 #include <EGL/eglplatform.h>
 
+#include <cstring>
+
 #include "utils.h"
 #include "wlstate.h"
 
@@ -44,6 +46,7 @@ enum graphics_error_e wayc_graphics_init(struct graphics_s* graphics,
                                          struct wlstate_s* state) {
   wayc_notnull(graphics);
   wayc_notnull(state);
+  memset(graphics, 0, sizeof(*graphics));
 
   EGLDisplay display = eglGetDisplay(state->display);
   if (display == EGL_NO_DISPLAY) return GRAPHICS_ERROR_ACQUIRE_DISPLAY;
@@ -90,3 +93,49 @@ void wayc_graphics_deinit(struct graphics_s* graphics) {
   graphics->display = nullptr;
   graphics->context = nullptr;
 }
+
+enum renderer_error_e wayc_renderer_init(struct renderer_s* renderer,
+                                         struct window_s* window,
+                                         struct graphics_s* graphics, i32 width,
+                                         i32 height) {
+  wayc_notnull(renderer);
+  wayc_notnull(window);
+  wayc_notnull(graphics);
+  memset(renderer, 0, sizeof(*renderer));
+
+  wl_egl_window_t ewindow =
+      wl_egl_window_create(window->surface, width, height);
+  if (ewindow == nullptr) return RENDERER_ERROR_WINDOW_CREATION;
+
+  EGLNativeWindowType nwindow = (EGLNativeWindowType)ewindow;
+
+  EGLSurface esurface = eglCreateWindowSurface(
+      graphics->display, graphics->config, nwindow, nullptr);
+  if (esurface == EGL_NO_SURFACE) {
+    wl_egl_window_destroy(ewindow);
+    return RENDERER_ERROR_SURFACE_CREATION;
+  }
+
+  renderer->graphics = graphics;
+  renderer->ewindow = ewindow;
+  renderer->esurface = esurface;
+  renderer->width = width;
+  renderer->height = height;
+
+  return RENDERER_ERROR_NONE;
+}
+
+void wayc_renderer_deinit(struct renderer_s* renderer) {
+  wayc_notnull(renderer);
+
+  if (renderer->graphics == nullptr || renderer->esurface == nullptr ||
+      renderer->ewindow == nullptr)
+    return;
+
+  eglDestroySurface(renderer->graphics->display, renderer->esurface);
+  wl_egl_window_destroy(renderer->ewindow);
+
+  renderer->graphics = nullptr;
+  renderer->esurface = nullptr;
+  renderer->ewindow = nullptr;
+}
diff --git a/src/graphics.h b/src/graphics.h
index 56d16de..0dd916e 100644
--- a/src/graphics.h
+++ b/src/graphics.h
@@ -4,6 +4,7 @@
 #include <wayland-egl.h>
 
 #include "utils.h"
+#include "window.h"
 
 enum graphics_error_e : u8 {
   GRAPHICS_ERROR_NONE = 0,
@@ -25,10 +26,45 @@ void wayc_graphics_deinit(struct graphics_s* graphics);
 
 enum renderer_error_e : u8 {
   RENDERER_ERROR_NONE = 0,
+  RENDERER_ERROR_WINDOW_CREATION,
+  RENDERER_ERROR_SURFACE_CREATION,
 };
 
 struct renderer_s {
   struct graphics_s* graphics;
-  wl_egl_window_t window;
-  EGLSurface surface;
+  wl_egl_window_t ewindow;
+  EGLSurface esurface;
+
+  i32 width, height;
 };
+
+enum renderer_error_e wayc_renderer_init(struct renderer_s* renderer,
+                                         struct window_s* window,
+                                         struct graphics_s* graphics, i32 width,
+                                         i32 height);
+static inline void wayc_renderer_resize(struct renderer_s* renderer, i32 width,
+                                        i32 height) {
+  wayc_notnull(renderer);
+  renderer->width = width;
+  renderer->height = height;
+  wl_egl_window_resize(renderer->ewindow, width, height, 0, 0);
+}
+
+static inline void wayc_renderer_use(struct renderer_s* renderer) {
+  wayc_notnull(renderer);
+  struct graphics_s* graphics = renderer->graphics;
+  EGLDisplay display = graphics->display;
+
+  eglMakeCurrent(display, renderer->esurface, renderer->esurface,
+                 graphics->context);
+}
+
+static inline void wayc_renderer_swap(struct renderer_s* renderer) {
+  wayc_notnull(renderer);
+  struct graphics_s* graphics = renderer->graphics;
+  EGLDisplay display = graphics->display;
+
+  eglSwapBuffers(display, renderer->esurface);
+}
+
+void wayc_renderer_deinit(struct renderer_s* renderer);