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Add public APIs for creating a Metal view attached to an SDL window. Add SDL_metal.h.

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This commit is contained in:
Alex Szpakowski
2019-08-05 12:35:32 -03:00
parent f3683d3a09
commit aebaa316c7
25 changed files with 412 additions and 94 deletions
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46
src/render/metal/SDL_render_metal.m
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@@ -26,17 +26,17 @@
#include "SDL_log.h"
#include "SDL_assert.h"
#include "SDL_syswm.h"
#include "SDL_metal.h"
#include "../SDL_sysrender.h"
#ifdef __MACOSX__
#include "../../video/cocoa/SDL_cocoametalview.h"
#else
#include "../../video/uikit/SDL_uikitmetalview.h"
#endif
#include <Availability.h>
#import <Metal/Metal.h>
#import <QuartzCore/CAMetalLayer.h>
#ifdef __MACOSX__
#import <AppKit/NSView.h>
#endif
/* Regenerate these with build-metal-shaders.sh */
#ifdef __MACOSX__
#include "SDL_shaders_metal_osx.h"
@@ -118,6 +118,7 @@ typedef struct METAL_ShaderPipelines
@property (nonatomic, retain) id<MTLSamplerState> mtlsamplerlinear;
@property (nonatomic, retain) id<MTLBuffer> mtlbufconstants;
@property (nonatomic, retain) id<MTLBuffer> mtlbufquadindices;
@property (nonatomic, assign) SDL_MetalView mtlview;
@property (nonatomic, retain) CAMetalLayer *mtllayer;
@property (nonatomic, retain) MTLRenderPassDescriptor *mtlpassdesc;
@property (nonatomic, assign) METAL_ShaderPipelines *activepipelines;
@@ -1475,6 +1476,8 @@ METAL_DestroyRenderer(SDL_Renderer * renderer)
}
DestroyAllPipelines(data.allpipelines, data.pipelinescount);
SDL_Metal_DestroyView(data.mtlview);
}
SDL_free(renderer);
@@ -1501,6 +1504,8 @@ METAL_CreateRenderer(SDL_Window * window, Uint32 flags)
SDL_Renderer *renderer = NULL;
METAL_RenderData *data = NULL;
id<MTLDevice> mtldevice = nil;
SDL_MetalView view = NULL;
CAMetalLayer *layer = nil;
SDL_SysWMinfo syswm;
SDL_VERSION(&syswm.version);
@@ -1527,26 +1532,36 @@ METAL_CreateRenderer(SDL_Window * window, Uint32 flags)
return NULL;
}
view = SDL_Metal_CreateView(window);
if (view == NULL) {
SDL_free(renderer);
return NULL;
}
// !!! FIXME: error checking on all of this.
data = [[METAL_RenderData alloc] init];
if (data == nil) {
SDL_Metal_DestroyView(view);
SDL_free(renderer);
return NULL;
}
renderer->driverdata = (void*)CFBridgingRetain(data);
renderer->window = window;
data.mtlview = view;
#ifdef __MACOSX__
NSView *view = Cocoa_Mtl_AddMetalView(window);
CAMetalLayer *layer = (CAMetalLayer *)[view layer];
layer = (CAMetalLayer *)[(NSView *)view layer];
#else
layer = (CAMetalLayer *)[(__bridge UIView *)view layer];
#endif
layer.device = mtldevice;
//layer.colorspace = nil;
#else
UIView *view = UIKit_Mtl_AddMetalView(window);
CAMetalLayer *layer = (CAMetalLayer *)[view layer];
#endif
// Necessary for RenderReadPixels.
/* Necessary for RenderReadPixels. */
layer.framebufferOnly = NO;
data.mtldevice = layer.device;
@@ -1763,7 +1778,6 @@ METAL_CreateRenderer(SDL_Window * window, Uint32 flags)
[mtlsamplerlinear release];
[mtlbufconstants release];
[mtlbufquadindices release];
[view release];
[data release];
[mtldevice release];
#endif