5 files changed, 39 insertions, 19 deletions

diff --git a/include/wlr/render/drm_format_set.h b/include/wlr/render/drm_format_set.h
new file mode 100644
index 00000000..588914ae
--- /dev/null
+++ b/include/wlr/render/drm_format_set.h
@@ -0,0 +1,27 @@
+#ifndef WLR_RENDER_DRM_FORMAT_SET_H
+#define WLR_RENDER_DRM_FORMAT_SET_H
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+struct wlr_drm_format {
+	uint32_t format;
+	size_t len, cap;
+	uint64_t modifiers[];
+};
+
+struct wlr_drm_format_set {
+	size_t len, cap;
+	struct wlr_drm_format **formats;
+};
+
+void wlr_drm_format_set_finish(struct wlr_drm_format_set *set);
+
+const struct wlr_drm_format *wlr_drm_format_set_get(
+	const struct wlr_drm_format_set *set, uint32_t format);
+
+bool wlr_drm_format_set_add(struct wlr_drm_format_set *set, uint32_t format,
+	uint64_t modifier);
+
+#endif
diff --git a/include/wlr/render/egl.h b/include/wlr/render/egl.h
index 269af7e2..fb473ba8 100644
--- a/include/wlr/render/egl.h
+++ b/include/wlr/render/egl.h
@@ -21,6 +21,7 @@
 #include <stdbool.h>
 #include <wayland-server.h>
 #include <wlr/render/dmabuf.h>
+#include <wlr/render/drm_format_set.h>
 
 struct wlr_egl {
 	EGLenum platform;
@@ -42,6 +43,8 @@ struct wlr_egl {
 	} exts;
 
 	struct wl_display *wl_display;
+
+	struct wlr_drm_format_set dmabuf_formats;
 };
 
 // TODO: Allocate and return a wlr_egl
@@ -88,13 +91,7 @@ EGLImageKHR wlr_egl_create_image_from_dmabuf(struct wlr_egl *egl,
 /**
  * Get the available dmabuf formats
  */
-int wlr_egl_get_dmabuf_formats(struct wlr_egl *egl, int **formats);
-
-/**
- * Get the available dmabuf modifiers for a given format
- */
-int wlr_egl_get_dmabuf_modifiers(struct wlr_egl *egl, int format,
-	uint64_t **modifiers);
+const struct wlr_drm_format_set *wlr_egl_get_dmabuf_formats(struct wlr_egl *egl);
 
 bool wlr_egl_export_image_to_dmabuf(struct wlr_egl *egl, EGLImageKHR image,
 	int32_t width, int32_t height, uint32_t flags,
diff --git a/include/wlr/render/interface.h b/include/wlr/render/interface.h
index c98a7cda..088b1efa 100644
--- a/include/wlr/render/interface.h
+++ b/include/wlr/render/interface.h
@@ -46,9 +46,8 @@ struct wlr_renderer_impl {
 		struct wl_resource *resource);
 	void (*wl_drm_buffer_get_size)(struct wlr_renderer *renderer,
 		struct wl_resource *buffer, int *width, int *height);
-	int (*get_dmabuf_formats)(struct wlr_renderer *renderer, int **formats);
-	int (*get_dmabuf_modifiers)(struct wlr_renderer *renderer, int format,
-		uint64_t **modifiers);
+	const struct wlr_drm_format_set *(*get_dmabuf_formats)(
+		struct wlr_renderer *renderer);
 	enum wl_shm_format (*preferred_read_format)(struct wlr_renderer *renderer);
 	bool (*read_pixels)(struct wlr_renderer *renderer, enum wl_shm_format fmt,
 		uint32_t *flags, uint32_t stride, uint32_t width, uint32_t height,
diff --git a/include/wlr/render/meson.build b/include/wlr/render/meson.build
index 05127bb7..06ebcc37 100644
--- a/include/wlr/render/meson.build
+++ b/include/wlr/render/meson.build
@@ -1,9 +1,10 @@
 install_headers(
 	'dmabuf.h',
 	'egl.h',
+	'drm_format_set.h',
 	'gles2.h',
 	'interface.h',
 	'wlr_renderer.h',
 	'wlr_texture.h',
-	subdir: 'wlr/render'
+	subdir: 'wlr/render',
 )
diff --git a/include/wlr/render/wlr_renderer.h b/include/wlr/render/wlr_renderer.h
index 9c031b7f..33f96b68 100644
--- a/include/wlr/render/wlr_renderer.h
+++ b/include/wlr/render/wlr_renderer.h
@@ -20,6 +20,7 @@ enum wlr_renderer_read_pixels_flags {
 };
 
 struct wlr_renderer_impl;
+struct wlr_drm_format_set;
 
 struct wlr_renderer {
 	const struct wlr_renderer_impl *impl;
@@ -87,15 +88,10 @@ bool wlr_renderer_resource_is_wl_drm_buffer(struct wlr_renderer *renderer,
 void wlr_renderer_wl_drm_buffer_get_size(struct wlr_renderer *renderer,
 	struct wl_resource *buffer, int *width, int *height);
 /**
- * Get the available dmabuf formats
+ * Get the available DMA-BUF formats.
  */
-int wlr_renderer_get_dmabuf_formats(struct wlr_renderer *renderer,
-	int **formats);
-/**
- * Get the available dmabuf modifiers for a given format
- */
-int wlr_renderer_get_dmabuf_modifiers(struct wlr_renderer *renderer, int format,
-	uint64_t **modifiers);
+const struct wlr_drm_format_set *wlr_renderer_get_dmabuf_formats(
+	struct wlr_renderer *renderer);
 /**
  * Reads out of pixels of the currently bound surface into data. `stride` is in
  * bytes.