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Fixed creating a metal renderer without specifying a metal window

Sam Lantinga 2020-05-25 14:10:51 -07:00
parent f176d7fda0
commit f16e6bfa8e
2 changed files with 26 additions and 4 deletions
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28
src/render/metal/SDL_render_metal.m
View File

@ -47,6 +47,9 @@
/* Apple Metal renderer implementation */
/* Used to re-create the window with Metal capability */
extern int SDL_RecreateWindow(SDL_Window * window, Uint32 flags);
/* macOS requires constants in a buffer to have a 256 byte alignment. */
/* Use native type alignments from https://developer.apple.com/metal/Metal-Shading-Language-Specification.pdf */
#ifdef __MACOSX__
@ -1578,6 +1581,8 @@ METAL_CreateRenderer(SDL_Window * window, Uint32 flags)
SDL_MetalView view = NULL;
CAMetalLayer *layer = nil;
SDL_SysWMinfo syswm;
Uint32 window_flags;
SDL_bool changed_window = SDL_FALSE;
SDL_VERSION(&syswm.version);
if (!SDL_GetWindowWMInfo(window, &syswm)) {
@ -1588,10 +1593,18 @@ METAL_CreateRenderer(SDL_Window * window, Uint32 flags)
return NULL;
}
window_flags = SDL_GetWindowFlags(window);
if (!(window_flags & SDL_WINDOW_METAL)) {
changed_window = SDL_TRUE;
if (SDL_RecreateWindow(window, (window_flags & ~SDL_WINDOW_OPENGL) | SDL_WINDOW_METAL) < 0) {
goto error;
}
}
renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
if (!renderer) {
SDL_OutOfMemory();
return NULL;
goto error;
}
// !!! FIXME: MTLCopyAllDevices() can find other GPUs on macOS...
@ -1600,7 +1613,7 @@ METAL_CreateRenderer(SDL_Window * window, Uint32 flags)
if (mtldevice == nil) {
SDL_free(renderer);
SDL_SetError("Failed to obtain Metal device");
return NULL;
goto error;
}
view = SDL_Metal_CreateView(window);
@ -1610,7 +1623,7 @@ METAL_CreateRenderer(SDL_Window * window, Uint32 flags)
[mtldevice release];
#endif
SDL_free(renderer);
return NULL;
goto error;
}
// !!! FIXME: error checking on all of this.
@ -1622,7 +1635,7 @@ METAL_CreateRenderer(SDL_Window * window, Uint32 flags)
#endif
SDL_Metal_DestroyView(view);
SDL_free(renderer);
return NULL;
goto error;
}
renderer->driverdata = (void*)CFBridgingRetain(data);
@ -1861,6 +1874,13 @@ METAL_CreateRenderer(SDL_Window * window, Uint32 flags)
#endif
return renderer;
error:
if (changed_window) {
/* Uh oh, better try to put it back... */
SDL_RecreateWindow(window, window_flags);
}
return NULL;
}}
SDL_RenderDriver METAL_RenderDriver = {

2
src/video/SDL_video.c
View File

@ -1706,10 +1706,12 @@ SDL_RecreateWindow(SDL_Window * window, Uint32 flags)
return -1;
}
/*
if ((window->flags & SDL_WINDOW_METAL) != (flags & SDL_WINDOW_METAL)) {
SDL_SetError("Can't change SDL_WINDOW_METAL window flag");
return -1;
}
*/
if ((window->flags & SDL_WINDOW_VULKAN) && (flags & SDL_WINDOW_OPENGL)) {
SDL_SetError("Vulkan and OpenGL not supported on same window");