metal: Add support for custom blend modes.

This commit is contained in:
Alex Szpakowski 2018-01-01 18:06:27 -04:00
parent 85470a2f95
commit cf45cf70e5
1 changed files with 206 additions and 88 deletions

View File

@ -49,6 +49,7 @@ static SDL_Renderer *METAL_CreateRenderer(SDL_Window * window, Uint32 flags);
static void METAL_WindowEvent(SDL_Renderer * renderer,
const SDL_WindowEvent *event);
static int METAL_GetOutputSize(SDL_Renderer * renderer, int *w, int *h);
static SDL_bool METAL_SupportsBlendMode(SDL_Renderer * renderer, SDL_BlendMode blendMode);
static int METAL_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture);
static int METAL_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, const void *pixels,
@ -104,6 +105,34 @@ SDL_RenderDriver METAL_RenderDriver = {
}
};
typedef enum SDL_MetalVertexFunction
{
SDL_METAL_VERTEX_SOLID,
SDL_METAL_VERTEX_COPY,
} SDL_MetalVertexFunction;
typedef enum SDL_MetalFragmentFunction
{
SDL_METAL_FRAGMENT_SOLID,
SDL_METAL_FRAGMENT_COPY_NEAREST,
SDL_METAL_FRAGMENT_COPY_LINEAR,
} SDL_MetalFragmentFunction;
typedef struct METAL_PipelineState
{
SDL_BlendMode blendMode;
void *pipe;
} METAL_PipelineState;
typedef struct METAL_PipelineCache
{
METAL_PipelineState *states;
int count;
SDL_MetalVertexFunction vertexFunction;
SDL_MetalFragmentFunction fragmentFunction;
const char *label;
} METAL_PipelineCache;
@interface METAL_RenderData : NSObject
@property (nonatomic, assign) BOOL beginScene;
@property (nonatomic, retain) id<MTLDevice> mtldevice;
@ -112,9 +141,9 @@ SDL_RenderDriver METAL_RenderDriver = {
@property (nonatomic, retain) id<MTLRenderCommandEncoder> mtlcmdencoder;
@property (nonatomic, retain) id<MTLLibrary> mtllibrary;
@property (nonatomic, retain) id<CAMetalDrawable> mtlbackbuffer;
@property (nonatomic, retain) NSMutableArray *mtlpipelineprims;
@property (nonatomic, retain) NSMutableArray *mtlpipelinecopynearest;
@property (nonatomic, retain) NSMutableArray *mtlpipelinecopylinear;
@property (nonatomic) METAL_PipelineCache *mtlpipelineprims;
@property (nonatomic) METAL_PipelineCache *mtlpipelinecopynearest;
@property (nonatomic) METAL_PipelineCache *mtlpipelinecopylinear;
@property (nonatomic, retain) id<MTLBuffer> mtlbufclearverts;
@property (nonatomic, retain) id<MTLBuffer> mtlbufidentitytransform;
@property (nonatomic, retain) CAMetalLayer *mtllayer;
@ -126,7 +155,7 @@ SDL_RenderDriver METAL_RenderDriver = {
@interface METAL_TextureData : NSObject
@property (nonatomic, retain) id<MTLTexture> mtltexture;
@property (nonatomic, retain) NSMutableArray *mtlpipeline;
@property (nonatomic) METAL_PipelineCache *mtlpipeline;
@end
@implementation METAL_TextureData
@ -149,90 +178,170 @@ IsMetalAvailable(const SDL_SysWMinfo *syswm)
return 0;
}
static id<MTLRenderPipelineState>
MakePipelineState(METAL_RenderData *data, NSString *label, NSString *vertfn,
NSString *fragfn, const SDL_BlendMode blendmode)
static const MTLBlendOperation invalidBlendOperation = (MTLBlendOperation)0xFFFFFFFF;
static const MTLBlendFactor invalidBlendFactor = (MTLBlendFactor)0xFFFFFFFF;
static MTLBlendOperation
GetBlendOperation(SDL_BlendOperation operation)
{
id<MTLFunction> mtlvertfn = [data.mtllibrary newFunctionWithName:vertfn];
id<MTLFunction> mtlfragfn = [data.mtllibrary newFunctionWithName:fragfn];
switch (operation) {
case SDL_BLENDOPERATION_ADD: return MTLBlendOperationAdd;
case SDL_BLENDOPERATION_SUBTRACT: return MTLBlendOperationSubtract;
case SDL_BLENDOPERATION_REV_SUBTRACT: return MTLBlendOperationReverseSubtract;
case SDL_BLENDOPERATION_MINIMUM: return MTLBlendOperationMin;
case SDL_BLENDOPERATION_MAXIMUM: return MTLBlendOperationMax;
default: return invalidBlendOperation;
}
}
static MTLBlendFactor
GetBlendFactor(SDL_BlendFactor factor)
{
switch (factor) {
case SDL_BLENDFACTOR_ZERO: return MTLBlendFactorZero;
case SDL_BLENDFACTOR_ONE: return MTLBlendFactorOne;
case SDL_BLENDFACTOR_SRC_COLOR: return MTLBlendFactorSourceColor;
case SDL_BLENDFACTOR_ONE_MINUS_SRC_COLOR: return MTLBlendFactorOneMinusSourceColor;
case SDL_BLENDFACTOR_SRC_ALPHA: return MTLBlendFactorSourceAlpha;
case SDL_BLENDFACTOR_ONE_MINUS_SRC_ALPHA: return MTLBlendFactorOneMinusSourceAlpha;
case SDL_BLENDFACTOR_DST_COLOR: return MTLBlendFactorDestinationColor;
case SDL_BLENDFACTOR_ONE_MINUS_DST_COLOR: return MTLBlendFactorOneMinusDestinationColor;
case SDL_BLENDFACTOR_DST_ALPHA: return MTLBlendFactorDestinationAlpha;
case SDL_BLENDFACTOR_ONE_MINUS_DST_ALPHA: return MTLBlendFactorOneMinusDestinationAlpha;
default: return invalidBlendFactor;
}
}
static NSString *
GetVertexFunctionName(SDL_MetalVertexFunction function)
{
switch (function) {
case SDL_METAL_VERTEX_SOLID: return @"SDL_Solid_vertex";
case SDL_METAL_VERTEX_COPY: return @"SDL_Copy_vertex";
default: return nil;
}
}
static NSString *
GetFragmentFunctionName(SDL_MetalFragmentFunction function)
{
switch (function) {
case SDL_METAL_FRAGMENT_SOLID: return @"SDL_Solid_fragment";
case SDL_METAL_FRAGMENT_COPY_NEAREST: return @"SDL_Copy_fragment_nearest";
case SDL_METAL_FRAGMENT_COPY_LINEAR: return @"SDL_Copy_fragment_linear";
default: return nil;
}
}
static id<MTLRenderPipelineState>
MakePipelineState(METAL_RenderData *data, METAL_PipelineCache *cache,
NSString *blendlabel, SDL_BlendMode blendmode)
{
id<MTLFunction> mtlvertfn = [data.mtllibrary newFunctionWithName:GetVertexFunctionName(cache->vertexFunction)];
id<MTLFunction> mtlfragfn = [data.mtllibrary newFunctionWithName:GetFragmentFunctionName(cache->fragmentFunction)];
SDL_assert(mtlvertfn != nil);
SDL_assert(mtlfragfn != nil);
MTLRenderPipelineDescriptor *mtlpipedesc = [[MTLRenderPipelineDescriptor alloc] init];
mtlpipedesc.vertexFunction = mtlvertfn;
mtlpipedesc.fragmentFunction = mtlfragfn;
mtlpipedesc.colorAttachments[0].pixelFormat = data.mtllayer.pixelFormat;
switch (blendmode) {
case SDL_BLENDMODE_BLEND:
mtlpipedesc.colorAttachments[0].blendingEnabled = YES;
mtlpipedesc.colorAttachments[0].rgbBlendOperation = MTLBlendOperationAdd;
mtlpipedesc.colorAttachments[0].alphaBlendOperation = MTLBlendOperationAdd;
mtlpipedesc.colorAttachments[0].sourceRGBBlendFactor = MTLBlendFactorSourceAlpha;
mtlpipedesc.colorAttachments[0].destinationRGBBlendFactor = MTLBlendFactorOneMinusSourceAlpha;
mtlpipedesc.colorAttachments[0].sourceAlphaBlendFactor = MTLBlendFactorOne;
mtlpipedesc.colorAttachments[0].destinationAlphaBlendFactor = MTLBlendFactorOneMinusSourceAlpha;
break;
MTLRenderPipelineColorAttachmentDescriptor *rtdesc = mtlpipedesc.colorAttachments[0];
case SDL_BLENDMODE_ADD:
mtlpipedesc.colorAttachments[0].blendingEnabled = YES;
mtlpipedesc.colorAttachments[0].rgbBlendOperation = MTLBlendOperationAdd;
mtlpipedesc.colorAttachments[0].alphaBlendOperation = MTLBlendOperationAdd;
mtlpipedesc.colorAttachments[0].sourceRGBBlendFactor = MTLBlendFactorSourceAlpha;
mtlpipedesc.colorAttachments[0].destinationRGBBlendFactor = MTLBlendFactorOne;
mtlpipedesc.colorAttachments[0].sourceAlphaBlendFactor = MTLBlendFactorZero;
mtlpipedesc.colorAttachments[0].destinationAlphaBlendFactor = MTLBlendFactorOne;
break;
// !!! FIXME: This should be part of the pipeline state cache.
rtdesc.pixelFormat = data.mtllayer.pixelFormat;
case SDL_BLENDMODE_MOD:
mtlpipedesc.colorAttachments[0].blendingEnabled = YES;
mtlpipedesc.colorAttachments[0].rgbBlendOperation = MTLBlendOperationAdd;
mtlpipedesc.colorAttachments[0].alphaBlendOperation = MTLBlendOperationAdd;
mtlpipedesc.colorAttachments[0].sourceRGBBlendFactor = MTLBlendFactorZero;
mtlpipedesc.colorAttachments[0].destinationRGBBlendFactor = MTLBlendFactorSourceColor;
mtlpipedesc.colorAttachments[0].sourceAlphaBlendFactor = MTLBlendFactorZero;
mtlpipedesc.colorAttachments[0].destinationAlphaBlendFactor = MTLBlendFactorOne;
break;
default:
mtlpipedesc.colorAttachments[0].blendingEnabled = NO;
break;
if (blendmode != SDL_BLENDMODE_NONE) {
rtdesc.blendingEnabled = YES;
rtdesc.sourceRGBBlendFactor = GetBlendFactor(SDL_GetBlendModeSrcColorFactor(blendmode));
rtdesc.destinationRGBBlendFactor = GetBlendFactor(SDL_GetBlendModeDstColorFactor(blendmode));
rtdesc.rgbBlendOperation = GetBlendOperation(SDL_GetBlendModeColorOperation(blendmode));
rtdesc.sourceAlphaBlendFactor = GetBlendFactor(SDL_GetBlendModeSrcAlphaFactor(blendmode));
rtdesc.destinationAlphaBlendFactor = GetBlendFactor(SDL_GetBlendModeDstAlphaFactor(blendmode));
rtdesc.alphaBlendOperation = GetBlendOperation(SDL_GetBlendModeAlphaOperation(blendmode));
} else {
rtdesc.blendingEnabled = NO;
}
mtlpipedesc.label = label;
mtlpipedesc.label = [@(cache->label) stringByAppendingString:blendlabel];
NSError *err = nil;
id<MTLRenderPipelineState> retval = [data.mtldevice newRenderPipelineStateWithDescriptor:mtlpipedesc error:&err];
id<MTLRenderPipelineState> state = [data.mtldevice newRenderPipelineStateWithDescriptor:mtlpipedesc error:&err];
SDL_assert(err == nil);
METAL_PipelineState pipeline;
pipeline.blendMode = blendmode;
pipeline.pipe = (void *)CFBridgingRetain(state);
METAL_PipelineState *states = SDL_realloc(cache->states, (cache->count + 1) * sizeof(pipeline));
#if !__has_feature(objc_arc)
[mtlpipedesc release]; // !!! FIXME: can these be reused for each creation, or does the pipeline obtain it?
[mtlvertfn release];
[mtlfragfn release];
[label release];
[state release];
#endif
return retval;
if (states) {
states[cache->count++] = pipeline;
cache->states = states;
return (__bridge id<MTLRenderPipelineState>)pipeline.pipe;
} else {
CFBridgingRelease(pipeline.pipe);
SDL_OutOfMemory();
return NULL;
}
}
static METAL_PipelineCache *
MakePipelineCache(METAL_RenderData *data, const char *label, SDL_MetalVertexFunction vertfn, SDL_MetalFragmentFunction fragfn)
{
METAL_PipelineCache *cache = SDL_malloc(sizeof(METAL_PipelineCache));
if (!cache) {
SDL_OutOfMemory();
return NULL;
}
SDL_zerop(cache);
cache->vertexFunction = vertfn;
cache->fragmentFunction = fragfn;
cache->label = label;
/* Create pipeline states for the default blend modes. Custom blend modes
* will be added to the cache on-demand. */
MakePipelineState(data, cache, @"(blend=none)", SDL_BLENDMODE_NONE);
MakePipelineState(data, cache, @"(blend=blend)", SDL_BLENDMODE_BLEND);
MakePipelineState(data, cache, @"(blend=add)", SDL_BLENDMODE_ADD);
MakePipelineState(data, cache, @"(blend=mod)", SDL_BLENDMODE_MOD);
return cache;
}
static void
MakePipelineStates(METAL_RenderData *data, NSMutableArray *states,
NSString *label, NSString *vertfn, NSString *fragfn)
DestroyPipelineCache(METAL_PipelineCache *cache)
{
[states addObject:MakePipelineState(data, [label stringByAppendingString:@" (blendmode=none)"], vertfn, fragfn, SDL_BLENDMODE_NONE)];
[states addObject:MakePipelineState(data, [label stringByAppendingString:@" (blendmode=blend)"], vertfn, fragfn, SDL_BLENDMODE_BLEND)];
[states addObject:MakePipelineState(data, [label stringByAppendingString:@" (blendmode=add)"], vertfn, fragfn, SDL_BLENDMODE_ADD)];
[states addObject:MakePipelineState(data, [label stringByAppendingString:@" (blendmode=mod)"], vertfn, fragfn, SDL_BLENDMODE_MOD)];
if (cache != NULL) {
for (int i = 0; i < cache->count; i++) {
CFBridgingRelease(cache->states[i].pipe);
}
SDL_free(cache->states);
SDL_free(cache);
}
}
static inline id<MTLRenderPipelineState>
ChoosePipelineState(NSMutableArray *states, const SDL_BlendMode blendmode)
ChoosePipelineState(METAL_RenderData *data, METAL_PipelineCache *cache, const SDL_BlendMode blendmode)
{
switch (blendmode) {
case SDL_BLENDMODE_BLEND: return (id<MTLRenderPipelineState>)states[1];
case SDL_BLENDMODE_ADD: return (id<MTLRenderPipelineState>)states[2];
case SDL_BLENDMODE_MOD: return (id<MTLRenderPipelineState>)states[3];
default: return (id<MTLRenderPipelineState>)states[0];
for (int i = 0; i < cache->count; i++) {
if (cache->states[i].blendMode == blendmode) {
return (__bridge id<MTLRenderPipelineState>)cache->states[i].pipe;
}
}
return nil;
return MakePipelineState(data, cache, [NSString stringWithFormat:@"(blend=custom 0x%x)", blendmode], blendmode);
}
static SDL_Renderer *
@ -285,8 +394,6 @@ METAL_CreateRenderer(SDL_Window * window, Uint32 flags)
layer.device = mtldevice;
// !!! FIXME: We might want this to be NO for RenderReadPixels.
layer.framebufferOnly = YES;
//layer.colorspace = nil;
#else
@ -294,6 +401,9 @@ METAL_CreateRenderer(SDL_Window * window, Uint32 flags)
CAMetalLayer *layer = (CAMetalLayer *)[view layer];
#endif
// Necessary for RenderReadPixels.
layer.framebufferOnly = NO;
data.mtldevice = layer.device;
data.mtllayer = layer;
data.mtlcmdqueue = [data.mtldevice newCommandQueue];
@ -312,12 +422,9 @@ METAL_CreateRenderer(SDL_Window * window, Uint32 flags)
#endif
data.mtllibrary.label = @"SDL Metal renderer shader library";
data.mtlpipelineprims = [[NSMutableArray alloc] init];
MakePipelineStates(data, data.mtlpipelineprims, @"SDL primitives pipeline", @"SDL_Solid_vertex", @"SDL_Solid_fragment");
data.mtlpipelinecopynearest = [[NSMutableArray alloc] init];
MakePipelineStates(data, data.mtlpipelinecopynearest, @"SDL texture pipeline (nearest)", @"SDL_Copy_vertex", @"SDL_Copy_fragment_nearest");
data.mtlpipelinecopylinear = [[NSMutableArray alloc] init];
MakePipelineStates(data, data.mtlpipelinecopylinear, @"SDL texture pipeline (linear)", @"SDL_Copy_vertex", @"SDL_Copy_fragment_linear");
data.mtlpipelineprims = MakePipelineCache(data, "SDL primitives pipeline ", SDL_METAL_VERTEX_SOLID, SDL_METAL_FRAGMENT_SOLID);
data.mtlpipelinecopynearest = MakePipelineCache(data, "SDL texture pipeline (nearest) ", SDL_METAL_VERTEX_COPY, SDL_METAL_FRAGMENT_COPY_NEAREST);
data.mtlpipelinecopylinear = MakePipelineCache(data, "SDL texture pipeline (linear) ", SDL_METAL_VERTEX_COPY, SDL_METAL_FRAGMENT_COPY_LINEAR);
static const float clearverts[] = { 0, 0, 0, 3, 3, 0 };
data.mtlbufclearverts = [data.mtldevice newBufferWithBytes:clearverts length:sizeof(clearverts) options:MTLResourceCPUCacheModeWriteCombined];
@ -333,6 +440,7 @@ METAL_CreateRenderer(SDL_Window * window, Uint32 flags)
renderer->WindowEvent = METAL_WindowEvent;
renderer->GetOutputSize = METAL_GetOutputSize;
renderer->SupportsBlendMode = METAL_SupportsBlendMode;
renderer->CreateTexture = METAL_CreateTexture;
renderer->UpdateTexture = METAL_UpdateTexture;
renderer->UpdateTextureYUV = METAL_UpdateTextureYUV;
@ -415,6 +523,27 @@ METAL_GetOutputSize(SDL_Renderer * renderer, int *w, int *h)
return 0;
}}
static SDL_bool
METAL_SupportsBlendMode(SDL_Renderer * renderer, SDL_BlendMode blendMode)
{
SDL_BlendFactor srcColorFactor = SDL_GetBlendModeSrcColorFactor(blendMode);
SDL_BlendFactor srcAlphaFactor = SDL_GetBlendModeSrcAlphaFactor(blendMode);
SDL_BlendOperation colorOperation = SDL_GetBlendModeColorOperation(blendMode);
SDL_BlendFactor dstColorFactor = SDL_GetBlendModeDstColorFactor(blendMode);
SDL_BlendFactor dstAlphaFactor = SDL_GetBlendModeDstAlphaFactor(blendMode);
SDL_BlendOperation alphaOperation = SDL_GetBlendModeAlphaOperation(blendMode);
if (GetBlendFactor(srcColorFactor) == invalidBlendFactor ||
GetBlendFactor(srcAlphaFactor) == invalidBlendFactor ||
GetBlendOperation(colorOperation) == invalidBlendOperation ||
GetBlendFactor(dstColorFactor) == invalidBlendFactor ||
GetBlendFactor(dstAlphaFactor) == invalidBlendFactor ||
GetBlendOperation(alphaOperation) == invalidBlendOperation) {
return SDL_FALSE;
}
return SDL_TRUE;
}
static int
METAL_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{ @autoreleasepool {
@ -616,7 +745,7 @@ METAL_RenderClear(SDL_Renderer * renderer)
// Draw a simple filled fullscreen triangle now.
METAL_SetOrthographicProjection(renderer, 1, 1);
[data.mtlcmdencoder setViewport:viewport];
[data.mtlcmdencoder setRenderPipelineState:ChoosePipelineState(data.mtlpipelineprims, renderer->blendMode)];
[data.mtlcmdencoder setRenderPipelineState:ChoosePipelineState(data, data.mtlpipelineprims, SDL_BLENDMODE_NONE)];
[data.mtlcmdencoder setVertexBuffer:data.mtlbufclearverts offset:0 atIndex:0];
[data.mtlcmdencoder setFragmentBytes:color length:sizeof(color) atIndex:0];
[data.mtlcmdencoder drawPrimitives:MTLPrimitiveTypeTriangle vertexStart:0 vertexCount:3];
@ -654,7 +783,7 @@ DrawVerts(SDL_Renderer * renderer, const SDL_FPoint * points, int count,
// !!! FIXME: render color should live in a dedicated uniform buffer.
const float color[4] = { ((float)renderer->r) / 255.0f, ((float)renderer->g) / 255.0f, ((float)renderer->b) / 255.0f, ((float)renderer->a) / 255.0f };
[data.mtlcmdencoder setRenderPipelineState:ChoosePipelineState(data.mtlpipelineprims, renderer->blendMode)];
[data.mtlcmdencoder setRenderPipelineState:ChoosePipelineState(data, data.mtlpipelineprims, renderer->blendMode)];
[data.mtlcmdencoder setFragmentBytes:color length:sizeof(color) atIndex:0];
[data.mtlcmdencoder setVertexBytes:points length:vertlen atIndex:0];
[data.mtlcmdencoder drawPrimitives:primtype vertexStart:0 vertexCount:count];
@ -682,7 +811,7 @@ METAL_RenderFillRects(SDL_Renderer * renderer, const SDL_FRect * rects, int coun
// !!! FIXME: render color should live in a dedicated uniform buffer.
const float color[4] = { ((float)renderer->r) / 255.0f, ((float)renderer->g) / 255.0f, ((float)renderer->b) / 255.0f, ((float)renderer->a) / 255.0f };
[data.mtlcmdencoder setRenderPipelineState:ChoosePipelineState(data.mtlpipelineprims, renderer->blendMode)];
[data.mtlcmdencoder setRenderPipelineState:ChoosePipelineState(data, data.mtlpipelineprims, renderer->blendMode)];
[data.mtlcmdencoder setFragmentBytes:color length:sizeof(color) atIndex:0];
for (int i = 0; i < count; i++, rects++) {
@ -734,7 +863,7 @@ METAL_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
color[3] = ((float)texture->a) / 255.0f;
}
[data.mtlcmdencoder setRenderPipelineState:ChoosePipelineState(texturedata.mtlpipeline, texture->blendMode)];
[data.mtlcmdencoder setRenderPipelineState:ChoosePipelineState(data, texturedata.mtlpipeline, texture->blendMode)];
[data.mtlcmdencoder setVertexBytes:xy length:sizeof(xy) atIndex:0];
[data.mtlcmdencoder setVertexBytes:uv length:sizeof(uv) atIndex:1];
[data.mtlcmdencoder setVertexBuffer:data.mtlbufidentitytransform offset:0 atIndex:3];
@ -816,7 +945,7 @@ METAL_RenderCopyEx(SDL_Renderer * renderer, SDL_Texture * texture,
color[3] = ((float)texture->a) / 255.0f;
}
[data.mtlcmdencoder setRenderPipelineState:ChoosePipelineState(texturedata.mtlpipeline, texture->blendMode)];
[data.mtlcmdencoder setRenderPipelineState:ChoosePipelineState(data, texturedata.mtlpipeline, texture->blendMode)];
[data.mtlcmdencoder setVertexBytes:xy length:sizeof(xy) atIndex:0];
[data.mtlcmdencoder setVertexBytes:uv length:sizeof(uv) atIndex:1];
[data.mtlcmdencoder setVertexBytes:transform length:sizeof(transform) atIndex:3];
@ -836,14 +965,7 @@ METAL_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
METAL_RenderData *data = (__bridge METAL_RenderData *) renderer->driverdata;
MTLRenderPassColorAttachmentDescriptor *colorAttachment = data.mtlpassdesc.colorAttachments[0];
id<MTLTexture> mtltexture = colorAttachment.texture;
MTLRegion mtlregion;
mtlregion.origin.x = rect->x;
mtlregion.origin.y = rect->y;
mtlregion.origin.z = 0;
mtlregion.size.width = rect->w;
mtlregion.size.height = rect->w;
mtlregion.size.depth = 1;
MTLRegion mtlregion = MTLRegionMake2D(rect->x, rect->y, rect->w, rect->h);
// we only do BGRA8 or RGBA8 at the moment, so 4 will do.
const int temp_pitch = rect->w * 4;
@ -903,14 +1025,6 @@ METAL_DestroyRenderer(SDL_Renderer * renderer)
[data.mtlcmdencoder release];
[data.mtlcmdbuffer release];
[data.mtlcmdqueue release];
for (int i = 0; i < 4; i++) {
[data.mtlpipelineprims[i] release];
[data.mtlpipelinecopynearest[i] release];
[data.mtlpipelinecopylinear[i] release];
}
[data.mtlpipelineprims release];
[data.mtlpipelinecopynearest release];
[data.mtlpipelinecopylinear release];
[data.mtlbufclearverts release];
[data.mtlbufidentitytransform release];
[data.mtllibrary release];
@ -918,6 +1032,10 @@ METAL_DestroyRenderer(SDL_Renderer * renderer)
[data.mtlpassdesc release];
[data.mtllayer release];
#endif
DestroyPipelineCache(data.mtlpipelineprims);
DestroyPipelineCache(data.mtlpipelinecopynearest);
DestroyPipelineCache(data.mtlpipelinecopylinear);
}
SDL_free(renderer);