Support dynamic loading of SDL libraries

This is mainly to address old issue when one need to have SDL library installed
in order to use our official builds. Some hip distros already installs SDL,
but it's not quite the same across all the variety of the distros.

We also now switching to SDL-2.0, most of the distros have it in repositories
already, so it shouldn't be huge deal to install it if needed.

Reviewers: campbellbarton

Reviewed By: campbellbarton

Differential Revision: https://developer.blender.org/D878

1 files changed, 60 insertions, 0 deletions

diff --git a/extern/sdlew/include/SDL2/SDL_shape.h b/extern/sdlew/include/SDL2/SDL_shape.h
new file mode 100644
index 00000000000..781e3d8eb3d
--- /dev/null
+++ b/extern/sdlew/include/SDL2/SDL_shape.h
@@ -0,0 +1,60 @@
+
+#ifndef _SDL_shape_h
+#define _SDL_shape_h
+
+#include "SDL_stdinc.h"
+#include "SDL_pixels.h"
+#include "SDL_rect.h"
+#include "SDL_surface.h"
+#include "SDL_video.h"
+
+#include "begin_code.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define SDL_NONSHAPEABLE_WINDOW -1
+#define SDL_INVALID_SHAPE_ARGUMENT -2
+#define SDL_WINDOW_LACKS_SHAPE -3
+
+typedef SDL_Window * SDLCALL tSDL_CreateShapedWindow(const char *title,unsigned int x,unsigned int y,unsigned int w,unsigned int h,Uint32 flags);
+
+typedef SDL_bool SDLCALL tSDL_IsShapedWindow(const SDL_Window *window);
+
+typedef enum {
+
+    ShapeModeDefault,
+
+    ShapeModeBinarizeAlpha,
+
+    ShapeModeReverseBinarizeAlpha,
+
+    ShapeModeColorKey
+} WindowShapeMode;
+
+#define SDL_SHAPEMODEALPHA(mode) (mode == ShapeModeDefault || mode == ShapeModeBinarizeAlpha || mode == ShapeModeReverseBinarizeAlpha)
+
+typedef union {
+
+    Uint8 binarizationCutoff;
+    SDL_Color colorKey;
+} SDL_WindowShapeParams;
+
+typedef struct SDL_WindowShapeMode {
+
+    WindowShapeMode mode;
+
+    SDL_WindowShapeParams parameters;
+} SDL_WindowShapeMode;
+
+typedef int SDLCALL tSDL_SetWindowShape(SDL_Window *window,SDL_Surface *shape,SDL_WindowShapeMode *shape_mode);
+
+typedef int SDLCALL tSDL_GetShapedWindowMode(SDL_Window *window,SDL_WindowShapeMode *shape_mode);
+
+#ifdef __cplusplus
+}
+#endif
+#include "close_code.h"
+
+#endif