Add EGL support for skia

1 files changed, 86 insertions, 0 deletions

diff --git a/src/skia-egl.cpp b/src/skia-egl.cpp
new file mode 100644
index 0000000..3301b23
--- /dev/null
+++ b/src/skia-egl.cpp
@@ -0,0 +1,86 @@
+#include <err.h>
+#include <stdlib.h>
+
+#include <GrGLInterface.h>
+#include <GrRenderTarget.h>
+#include <GrContext.h>
+#include <SkGpuDevice.h>
+
+#include <EGL/egl.h>
+#include <GLES3/gl3.h>
+
+#include "egl.h"
+
+static void
+cleanup (void *data)
+{
+  egl_state_t *state = (egl_state_t*)data;
+
+  eglDestroyContext (state->egl_display, state->egl_context);
+  eglDestroySurface (state->egl_display, state->egl_surface);
+  eglTerminate (state->egl_display);
+
+  XUnmapWindow (state->dpy, state->window);
+  XDestroyWindow (state->dpy, state->window);
+  XCloseDisplay (state->dpy);
+
+  free (state);
+}
+
+SkBaseDevice *
+create_skia_device_egl (int width, int height)
+{
+  egl_state_t *state;
+
+  GrBackendRenderTargetDesc desc;
+  GrContext* ctx;
+  GrRenderTarget* target;
+  SkGpuDevice *device;
+
+  state = (egl_state_t*) malloc (sizeof (egl_state_t));
+  if (!state) {
+    warnx ("Out of memory\n");
+    return NULL;
+  }
+
+  if (!createWindow(state, width, height)) {
+    return NULL;
+  }
+
+  if (!createEGLContextWithWindow(state)) {
+    cleanup(state);
+    return NULL;
+  }
+
+  eglMakeCurrent(state->egl_display, state->egl_surface, state->egl_surface, state->egl_context);
+
+  desc.fWidth = 720;
+  desc.fHeight = 1280;
+  desc.fConfig = kSkia8888_GrPixelConfig;
+  desc.fOrigin = kBottomLeft_GrSurfaceOrigin;
+  //desc.fOrigin = kTopLeft_GrSurfaceOrigin;
+  desc.fSampleCnt = 4;
+  desc.fStencilBits = 1;
+  desc.fRenderTargetHandle = 0;
+  ctx = GrContext::Create(kOpenGL_GrBackend, 0);
+  target = ctx->wrapBackendRenderTarget(desc);
+
+  device = new SkGpuDevice(ctx, target);
+
+  /* TODO: Set cleanup routine to get called
+
+  if (cairo_device_set_user_data (cairo_device,
+				  (cairo_user_data_key_t *) cleanup,
+				  state,
+				  cleanup))
+    {
+      warnx ("Failed to setup cleanup callback closure\n");
+      cleanup (state);
+      return NULL;
+    }
+
+  cairo_device_destroy (cairo_device);
+  */
+
+  return device;
+}