Merge pull request #41 from acrisci/feature/surface-interface-stub

Add surface interface stubs in compositor example

1 files changed, 32 insertions, 1 deletions

diff --git a/render/gles2/surface.c b/render/gles2/surface.c
index f730a499..33d8b0dc 100644
--- a/render/gles2/surface.c
+++ b/render/gles2/surface.c
@@ -34,6 +34,35 @@ static bool gles2_surface_attach_pixels(struct wlr_surface_state *surface,
 	return true;
 }
 
+static bool gles2_surface_attach_shm(struct wlr_surface_state *surface,
+		uint32_t format, struct wl_shm_buffer *buffer) {
+	const struct pixel_format *fmt = gl_format_for_wl_format(format);
+	if (!fmt || !fmt->gl_format) {
+		wlr_log(L_ERROR, "No supported pixel format for this surface");
+		return false;
+	}
+	wl_shm_buffer_begin_access(buffer);
+	uint8_t *pixels = wl_shm_buffer_get_data(buffer);
+	int width = wl_shm_buffer_get_width(buffer);
+	int height = wl_shm_buffer_get_height(buffer);
+	int pitch = wl_shm_buffer_get_stride(buffer) / (fmt->bpp / 8);
+	surface->wlr_surface->width = width;
+	surface->wlr_surface->height = height;
+	surface->wlr_surface->format = format;
+	surface->pixel_format = fmt;
+
+	GL_CALL(glActiveTexture(GL_TEXTURE0));
+	GL_CALL(glGenTextures(1, &surface->tex_id));
+	GL_CALL(glBindTexture(GL_TEXTURE_2D, surface->tex_id));
+	GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, pitch));
+	GL_CALL(glTexImage2D(GL_TEXTURE_2D, 0, fmt->gl_format, width, height, 0,
+				fmt->gl_format, fmt->gl_type, pixels));
+
+	surface->wlr_surface->valid = true;
+	wl_shm_buffer_end_access(buffer);
+	return true;
+}
+
 static void gles2_surface_get_matrix(struct wlr_surface_state *surface,
 		float (*matrix)[16], const float (*projection)[16], int x, int y) {
 	struct wlr_surface *_surface = surface->wlr_surface;
@@ -55,13 +84,14 @@ static void gles2_surface_bind(struct wlr_surface_state *surface) {
 }
 
 static void gles2_surface_destroy(struct wlr_surface_state *surface) {
+	wl_signal_emit(&surface->wlr_surface->destroy_signal, surface->wlr_surface);
 	GL_CALL(glDeleteTextures(1, &surface->tex_id));
 	free(surface);
 }
 
 static struct wlr_surface_impl wlr_surface_impl = {
 	.attach_pixels = gles2_surface_attach_pixels,
-	// .attach_shm = TODO
+	.attach_shm = gles2_surface_attach_shm,
 	.get_matrix = gles2_surface_get_matrix,
 	.bind = gles2_surface_bind,
 	.destroy = gles2_surface_destroy,
@@ -71,5 +101,6 @@ struct wlr_surface *gles2_surface_init() {
 	struct wlr_surface_state *state = calloc(sizeof(struct wlr_surface_state), 1);
 	struct wlr_surface *surface = wlr_surface_init(state, &wlr_surface_impl);
 	state->wlr_surface = surface;
+	wl_signal_init(&surface->destroy_signal);
 	return surface;
 }