SDL_render_metal.m
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2019 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#if SDL_VIDEO_RENDER_METAL && !SDL_RENDER_DISABLED
#include "SDL_hints.h"
#include "SDL_log.h"
#include "SDL_assert.h"
#include "SDL_syswm.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>
/* Regenerate these with build-metal-shaders.sh */
#ifdef __MACOSX__
#include "SDL_shaders_metal_osx.h"
#else
#include "SDL_shaders_metal_ios.h"
#endif
/* Apple Metal renderer implementation */
/* macOS requires constants in a buffer to have a 256 byte alignment. */
#ifdef __MACOSX__
#define CONSTANT_ALIGN 256
#else
#define CONSTANT_ALIGN 4
#endif
#define ALIGN_CONSTANTS(size) ((size + CONSTANT_ALIGN - 1) & (~(CONSTANT_ALIGN - 1)))
static const size_t CONSTANTS_OFFSET_INVALID = 0xFFFFFFFF;
static const size_t CONSTANTS_OFFSET_IDENTITY = 0;
static const size_t CONSTANTS_OFFSET_HALF_PIXEL_TRANSFORM = ALIGN_CONSTANTS(CONSTANTS_OFFSET_IDENTITY + sizeof(float) * 16);
static const size_t CONSTANTS_OFFSET_DECODE_JPEG = ALIGN_CONSTANTS(CONSTANTS_OFFSET_HALF_PIXEL_TRANSFORM + sizeof(float) * 16);
static const size_t CONSTANTS_OFFSET_DECODE_BT601 = ALIGN_CONSTANTS(CONSTANTS_OFFSET_DECODE_JPEG + sizeof(float) * 4 * 4);
static const size_t CONSTANTS_OFFSET_DECODE_BT709 = ALIGN_CONSTANTS(CONSTANTS_OFFSET_DECODE_BT601 + sizeof(float) * 4 * 4);
static const size_t CONSTANTS_LENGTH = CONSTANTS_OFFSET_DECODE_BT709 + sizeof(float) * 4 * 4;
typedef enum SDL_MetalVertexFunction
{
SDL_METAL_VERTEX_SOLID,
SDL_METAL_VERTEX_COPY,
} SDL_MetalVertexFunction;
typedef enum SDL_MetalFragmentFunction
{
SDL_METAL_FRAGMENT_SOLID = 0,
SDL_METAL_FRAGMENT_COPY,
SDL_METAL_FRAGMENT_YUV,
SDL_METAL_FRAGMENT_NV12,
SDL_METAL_FRAGMENT_NV21,
SDL_METAL_FRAGMENT_COUNT,
} 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;
MTLPixelFormat renderTargetFormat;
const char *label;
} METAL_PipelineCache;
/* Each shader combination used by drawing functions has a separate pipeline
* cache, and we have a separate list of caches for each render target pixel
* format. This is more efficient than iterating over a global cache to find
* the pipeline based on the specified shader combination and RT pixel format,
* since we know what the RT pixel format is when we set the render target, and
* we know what the shader combination is inside each drawing function's code. */
typedef struct METAL_ShaderPipelines
{
MTLPixelFormat renderTargetFormat;
METAL_PipelineCache caches[SDL_METAL_FRAGMENT_COUNT];
} METAL_ShaderPipelines;
@interface METAL_RenderData : NSObject
@property (nonatomic, retain) id<MTLDevice> mtldevice;
@property (nonatomic, retain) id<MTLCommandQueue> mtlcmdqueue;
@property (nonatomic, retain) id<MTLCommandBuffer> mtlcmdbuffer;
@property (nonatomic, retain) id<MTLRenderCommandEncoder> mtlcmdencoder;
@property (nonatomic, retain) id<MTLLibrary> mtllibrary;
@property (nonatomic, retain) id<CAMetalDrawable> mtlbackbuffer;
@property (nonatomic, retain) id<MTLSamplerState> mtlsamplernearest;
@property (nonatomic, retain) id<MTLSamplerState> mtlsamplerlinear;
@property (nonatomic, retain) id<MTLBuffer> mtlbufconstants;
@property (nonatomic, retain) id<MTLBuffer> mtlbufquadindices;
@property (nonatomic, retain) CAMetalLayer *mtllayer;
@property (nonatomic, retain) MTLRenderPassDescriptor *mtlpassdesc;
@property (nonatomic, assign) METAL_ShaderPipelines *activepipelines;
@property (nonatomic, assign) METAL_ShaderPipelines *allpipelines;
@property (nonatomic, assign) int pipelinescount;
@end
@implementation METAL_RenderData
#if !__has_feature(objc_arc)
- (void)dealloc
{
[_mtldevice release];
[_mtlcmdqueue release];
[_mtlcmdbuffer release];
[_mtlcmdencoder release];
[_mtllibrary release];
[_mtlbackbuffer release];
[_mtlsamplernearest release];
[_mtlsamplerlinear release];
[_mtlbufconstants release];
[_mtlbufquadindices release];
[_mtllayer release];
[_mtlpassdesc release];
[super dealloc];
}
#endif
@end
@interface METAL_TextureData : NSObject
@property (nonatomic, retain) id<MTLTexture> mtltexture;
@property (nonatomic, retain) id<MTLTexture> mtltexture_uv;
@property (nonatomic, retain) id<MTLSamplerState> mtlsampler;
@property (nonatomic, assign) SDL_MetalFragmentFunction fragmentFunction;
@property (nonatomic, assign) BOOL yuv;
@property (nonatomic, assign) BOOL nv12;
@property (nonatomic, assign) size_t conversionBufferOffset;
@property (nonatomic, assign) BOOL hasdata;
@property (nonatomic, retain) id<MTLBuffer> lockedbuffer;
@property (nonatomic, assign) SDL_Rect lockedrect;
@end
@implementation METAL_TextureData
#if !__has_feature(objc_arc)
- (void)dealloc
{
[_mtltexture release];
[_mtltexture_uv release];
[_mtlsampler release];
[super dealloc];
}
#endif
@end
static int
IsMetalAvailable(const SDL_SysWMinfo *syswm)
{
if (syswm->subsystem != SDL_SYSWM_COCOA && syswm->subsystem != SDL_SYSWM_UIKIT) {
return SDL_SetError("Metal render target only supports Cocoa and UIKit video targets at the moment.");
}
// this checks a weak symbol.
#if (defined(__MACOSX__) && (MAC_OS_X_VERSION_MIN_REQUIRED < 101100))
if (MTLCreateSystemDefaultDevice == NULL) { // probably on 10.10 or lower.
return SDL_SetError("Metal framework not available on this system");
}
#endif
return 0;
}
static const MTLBlendOperation invalidBlendOperation = (MTLBlendOperation)0xFFFFFFFF;
static const MTLBlendFactor invalidBlendFactor = (MTLBlendFactor)0xFFFFFFFF;
static MTLBlendOperation
GetBlendOperation(SDL_BlendOperation operation)
{
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: return @"SDL_Copy_fragment";
case SDL_METAL_FRAGMENT_YUV: return @"SDL_YUV_fragment";
case SDL_METAL_FRAGMENT_NV12: return @"SDL_NV12_fragment";
case SDL_METAL_FRAGMENT_NV21: return @"SDL_NV21_fragment";
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;
MTLRenderPipelineColorAttachmentDescriptor *rtdesc = mtlpipedesc.colorAttachments[0];
rtdesc.pixelFormat = cache->renderTargetFormat;
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 = [@(cache->label) stringByAppendingString:blendlabel];
NSError *err = nil;
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];
[state release];
#endif
if (states) {
states[cache->count++] = pipeline;
cache->states = states;
return (__bridge id<MTLRenderPipelineState>)pipeline.pipe;
} else {
CFBridgingRelease(pipeline.pipe);
SDL_OutOfMemory();
return NULL;
}
}
static void
MakePipelineCache(METAL_RenderData *data, METAL_PipelineCache *cache, const char *label,
MTLPixelFormat rtformat, SDL_MetalVertexFunction vertfn, SDL_MetalFragmentFunction fragfn)
{
SDL_zerop(cache);
cache->vertexFunction = vertfn;
cache->fragmentFunction = fragfn;
cache->renderTargetFormat = rtformat;
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);
}
static void
DestroyPipelineCache(METAL_PipelineCache *cache)
{
if (cache != NULL) {
for (int i = 0; i < cache->count; i++) {
CFBridgingRelease(cache->states[i].pipe);
}
SDL_free(cache->states);
}
}
void
MakeShaderPipelines(METAL_RenderData *data, METAL_ShaderPipelines *pipelines, MTLPixelFormat rtformat)
{
SDL_zerop(pipelines);
pipelines->renderTargetFormat = rtformat;
MakePipelineCache(data, &pipelines->caches[SDL_METAL_FRAGMENT_SOLID], "SDL primitives pipeline", rtformat, SDL_METAL_VERTEX_SOLID, SDL_METAL_FRAGMENT_SOLID);
MakePipelineCache(data, &pipelines->caches[SDL_METAL_FRAGMENT_COPY], "SDL copy pipeline", rtformat, SDL_METAL_VERTEX_COPY, SDL_METAL_FRAGMENT_COPY);
MakePipelineCache(data, &pipelines->caches[SDL_METAL_FRAGMENT_YUV], "SDL YUV pipeline", rtformat, SDL_METAL_VERTEX_COPY, SDL_METAL_FRAGMENT_YUV);
MakePipelineCache(data, &pipelines->caches[SDL_METAL_FRAGMENT_NV12], "SDL NV12 pipeline", rtformat, SDL_METAL_VERTEX_COPY, SDL_METAL_FRAGMENT_NV12);
MakePipelineCache(data, &pipelines->caches[SDL_METAL_FRAGMENT_NV21], "SDL NV21 pipeline", rtformat, SDL_METAL_VERTEX_COPY, SDL_METAL_FRAGMENT_NV21);
}
static METAL_ShaderPipelines *
ChooseShaderPipelines(METAL_RenderData *data, MTLPixelFormat rtformat)
{
METAL_ShaderPipelines *allpipelines = data.allpipelines;
int count = data.pipelinescount;
for (int i = 0; i < count; i++) {
if (allpipelines[i].renderTargetFormat == rtformat) {
return &allpipelines[i];
}
}
allpipelines = SDL_realloc(allpipelines, (count + 1) * sizeof(METAL_ShaderPipelines));
if (allpipelines == NULL) {
SDL_OutOfMemory();
return NULL;
}
MakeShaderPipelines(data, &allpipelines[count], rtformat);
data.allpipelines = allpipelines;
data.pipelinescount = count + 1;
return &data.allpipelines[count];
}
static void
DestroyAllPipelines(METAL_ShaderPipelines *allpipelines, int count)
{
if (allpipelines != NULL) {
for (int i = 0; i < count; i++) {
for (int cache = 0; cache < SDL_METAL_FRAGMENT_COUNT; cache++) {
DestroyPipelineCache(&allpipelines[i].caches[cache]);
}
}
SDL_free(allpipelines);
}
}
static inline id<MTLRenderPipelineState>
ChoosePipelineState(METAL_RenderData *data, METAL_ShaderPipelines *pipelines, SDL_MetalFragmentFunction fragfn, SDL_BlendMode blendmode)
{
METAL_PipelineCache *cache = &pipelines->caches[fragfn];
for (int i = 0; i < cache->count; i++) {
if (cache->states[i].blendMode == blendmode) {
return (__bridge id<MTLRenderPipelineState>)cache->states[i].pipe;
}
}
return MakePipelineState(data, cache, [NSString stringWithFormat:@" (blend=custom 0x%x)", blendmode], blendmode);
}
static void
METAL_ActivateRenderCommandEncoder(SDL_Renderer * renderer, MTLLoadAction load, MTLClearColor *clear_color)
{
METAL_RenderData *data = (__bridge METAL_RenderData *) renderer->driverdata;
/* Our SetRenderTarget just signals that the next render operation should
* set up a new render pass. This is where that work happens. */
if (data.mtlcmdencoder == nil) {
id<MTLTexture> mtltexture = nil;
if (renderer->target != NULL) {
METAL_TextureData *texdata = (__bridge METAL_TextureData *)renderer->target->driverdata;
mtltexture = texdata.mtltexture;
} else {
if (data.mtlbackbuffer == nil) {
/* The backbuffer's contents aren't guaranteed to persist after
* presenting, so we can leave it undefined when loading it. */
data.mtlbackbuffer = [data.mtllayer nextDrawable];
if (load == MTLLoadActionLoad) {
load = MTLLoadActionDontCare;
}
}
mtltexture = data.mtlbackbuffer.texture;
}
SDL_assert(mtltexture);
if (load == MTLLoadActionClear) {
SDL_assert(clear_color != NULL);
data.mtlpassdesc.colorAttachments[0].clearColor = *clear_color;
}
data.mtlpassdesc.colorAttachments[0].loadAction = load;
data.mtlpassdesc.colorAttachments[0].texture = mtltexture;
data.mtlcmdbuffer = [data.mtlcmdqueue commandBuffer];
data.mtlcmdencoder = [data.mtlcmdbuffer renderCommandEncoderWithDescriptor:data.mtlpassdesc];
if (data.mtlbackbuffer != nil && mtltexture == data.mtlbackbuffer.texture) {
data.mtlcmdencoder.label = @"SDL metal renderer backbuffer";
} else {
data.mtlcmdencoder.label = @"SDL metal renderer render target";
}
data.activepipelines = ChooseShaderPipelines(data, mtltexture.pixelFormat);
// make sure this has a definite place in the queue. This way it will
// execute reliably whether the app tries to make its own command buffers
// or whatever. This means we can _always_ batch rendering commands!
[data.mtlcmdbuffer enqueue];
}
}
static void
METAL_WindowEvent(SDL_Renderer * renderer, const SDL_WindowEvent *event)
{
if (event->event == SDL_WINDOWEVENT_SHOWN ||
event->event == SDL_WINDOWEVENT_HIDDEN) {
// !!! FIXME: write me
}
}
static int
METAL_GetOutputSize(SDL_Renderer * renderer, int *w, int *h)
{ @autoreleasepool {
METAL_RenderData *data = (__bridge METAL_RenderData *) renderer->driverdata;
if (w) {
*w = (int)data.mtllayer.drawableSize.width;
}
if (h) {
*h = (int)data.mtllayer.drawableSize.height;
}
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 {
METAL_RenderData *data = (__bridge METAL_RenderData *) renderer->driverdata;
MTLPixelFormat pixfmt;
switch (texture->format) {
case SDL_PIXELFORMAT_ABGR8888:
pixfmt = MTLPixelFormatRGBA8Unorm;
break;
case SDL_PIXELFORMAT_ARGB8888:
pixfmt = MTLPixelFormatBGRA8Unorm;
break;
case SDL_PIXELFORMAT_IYUV:
case SDL_PIXELFORMAT_YV12:
case SDL_PIXELFORMAT_NV12:
case SDL_PIXELFORMAT_NV21:
pixfmt = MTLPixelFormatR8Unorm;
break;
default:
return SDL_SetError("Texture format %s not supported by Metal", SDL_GetPixelFormatName(texture->format));
}
MTLTextureDescriptor *mtltexdesc = [MTLTextureDescriptor texture2DDescriptorWithPixelFormat:pixfmt
width:(NSUInteger)texture->w height:(NSUInteger)texture->h mipmapped:NO];
/* Not available in iOS 8. */
if ([mtltexdesc respondsToSelector:@selector(usage)]) {
if (texture->access == SDL_TEXTUREACCESS_TARGET) {
mtltexdesc.usage = MTLTextureUsageShaderRead | MTLTextureUsageRenderTarget;
} else {
mtltexdesc.usage = MTLTextureUsageShaderRead;
}
}
id<MTLTexture> mtltexture = [data.mtldevice newTextureWithDescriptor:mtltexdesc];
if (mtltexture == nil) {
return SDL_SetError("Texture allocation failed");
}
id<MTLTexture> mtltexture_uv = nil;
BOOL yuv = (texture->format == SDL_PIXELFORMAT_IYUV) || (texture->format == SDL_PIXELFORMAT_YV12);
BOOL nv12 = (texture->format == SDL_PIXELFORMAT_NV12) || (texture->format == SDL_PIXELFORMAT_NV21);
if (yuv) {
mtltexdesc.pixelFormat = MTLPixelFormatR8Unorm;
mtltexdesc.width = (texture->w + 1) / 2;
mtltexdesc.height = (texture->h + 1) / 2;
mtltexdesc.textureType = MTLTextureType2DArray;
mtltexdesc.arrayLength = 2;
} else if (nv12) {
mtltexdesc.pixelFormat = MTLPixelFormatRG8Unorm;
mtltexdesc.width = (texture->w + 1) / 2;
mtltexdesc.height = (texture->h + 1) / 2;
}
if (yuv || nv12) {
mtltexture_uv = [data.mtldevice newTextureWithDescriptor:mtltexdesc];
if (mtltexture_uv == nil) {
#if !__has_feature(objc_arc)
[mtltexture release];
#endif
return SDL_SetError("Texture allocation failed");
}
}
METAL_TextureData *texturedata = [[METAL_TextureData alloc] init];
if (texture->scaleMode == SDL_ScaleModeNearest) {
texturedata.mtlsampler = data.mtlsamplernearest;
} else {
texturedata.mtlsampler = data.mtlsamplerlinear;
}
texturedata.mtltexture = mtltexture;
texturedata.mtltexture_uv = mtltexture_uv;
texturedata.yuv = yuv;
texturedata.nv12 = nv12;
if (yuv) {
texturedata.fragmentFunction = SDL_METAL_FRAGMENT_YUV;
} else if (texture->format == SDL_PIXELFORMAT_NV12) {
texturedata.fragmentFunction = SDL_METAL_FRAGMENT_NV12;
} else if (texture->format == SDL_PIXELFORMAT_NV21) {
texturedata.fragmentFunction = SDL_METAL_FRAGMENT_NV21;
} else {
texturedata.fragmentFunction = SDL_METAL_FRAGMENT_COPY;
}
if (yuv || nv12) {
size_t offset = 0;
SDL_YUV_CONVERSION_MODE mode = SDL_GetYUVConversionModeForResolution(texture->w, texture->h);
switch (mode) {
case SDL_YUV_CONVERSION_JPEG: offset = CONSTANTS_OFFSET_DECODE_JPEG; break;
case SDL_YUV_CONVERSION_BT601: offset = CONSTANTS_OFFSET_DECODE_BT601; break;
case SDL_YUV_CONVERSION_BT709: offset = CONSTANTS_OFFSET_DECODE_BT709; break;
default: offset = 0; break;
}
texturedata.conversionBufferOffset = offset;
}
texture->driverdata = (void*)CFBridgingRetain(texturedata);
#if !__has_feature(objc_arc)
[texturedata release];
[mtltexture release];
[mtltexture_uv release];
#endif
return 0;
}}
static void
METAL_UploadTextureData(id<MTLTexture> texture, SDL_Rect rect, int slice,
const void * pixels, int pitch)
{
[texture replaceRegion:MTLRegionMake2D(rect.x, rect.y, rect.w, rect.h)
mipmapLevel:0
slice:slice
withBytes:pixels
bytesPerRow:pitch
bytesPerImage:0];
}
static MTLStorageMode
METAL_GetStorageMode(id<MTLResource> resource)
{
/* iOS 8 does not have this method. */
if ([resource respondsToSelector:@selector(storageMode)]) {
return resource.storageMode;
}
return MTLStorageModeShared;
}
static int
METAL_UpdateTextureInternal(SDL_Renderer * renderer, METAL_TextureData *texturedata,
id<MTLTexture> texture, SDL_Rect rect, int slice,
const void * pixels, int pitch)
{
METAL_RenderData *data = (__bridge METAL_RenderData *) renderer->driverdata;
SDL_Rect stagingrect = {0, 0, rect.w, rect.h};
MTLTextureDescriptor *desc;
/* If the texture is managed or shared and this is the first upload, we can
* use replaceRegion to upload to it directly. Otherwise we upload the data
* to a staging texture and copy that over. */
if (!texturedata.hasdata && METAL_GetStorageMode(texture) != MTLStorageModePrivate) {
METAL_UploadTextureData(texture, rect, slice, pixels, pitch);
return 0;
}
desc = [MTLTextureDescriptor texture2DDescriptorWithPixelFormat:texture.pixelFormat
width:rect.w
height:rect.h
mipmapped:NO];
if (desc == nil) {
return SDL_OutOfMemory();
}
/* TODO: We could have a pool of textures or a MTLHeap we allocate from,
* and release a staging texture back to the pool in the command buffer's
* completion handler. */
id<MTLTexture> stagingtex = [data.mtldevice newTextureWithDescriptor:desc];
if (stagingtex == nil) {
return SDL_OutOfMemory();
}
#if !__has_feature(objc_arc)
[stagingtex autorelease];
#endif
METAL_UploadTextureData(stagingtex, stagingrect, 0, pixels, pitch);
if (data.mtlcmdencoder != nil) {
[data.mtlcmdencoder endEncoding];
data.mtlcmdencoder = nil;
}
if (data.mtlcmdbuffer == nil) {
data.mtlcmdbuffer = [data.mtlcmdqueue commandBuffer];
}
id<MTLBlitCommandEncoder> blitcmd = [data.mtlcmdbuffer blitCommandEncoder];
[blitcmd copyFromTexture:stagingtex
sourceSlice:0
sourceLevel:0
sourceOrigin:MTLOriginMake(0, 0, 0)
sourceSize:MTLSizeMake(rect.w, rect.h, 1)
toTexture:texture
destinationSlice:slice
destinationLevel:0
destinationOrigin:MTLOriginMake(rect.x, rect.y, 0)];
[blitcmd endEncoding];
/* TODO: This isn't very efficient for the YUV formats, which call
* UpdateTextureInternal multiple times in a row. */
[data.mtlcmdbuffer commit];
data.mtlcmdbuffer = nil;
return 0;
}
static int
METAL_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, const void *pixels, int pitch)
{ @autoreleasepool {
METAL_TextureData *texturedata = (__bridge METAL_TextureData *)texture->driverdata;
if (METAL_UpdateTextureInternal(renderer, texturedata, texturedata.mtltexture, *rect, 0, pixels, pitch) < 0) {
return -1;
}
if (texturedata.yuv) {
int Uslice = texture->format == SDL_PIXELFORMAT_YV12 ? 1 : 0;
int Vslice = texture->format == SDL_PIXELFORMAT_YV12 ? 0 : 1;
int UVpitch = (pitch + 1) / 2;
SDL_Rect UVrect = {rect->x / 2, rect->y / 2, (rect->w + 1) / 2, (rect->h + 1) / 2};
/* Skip to the correct offset into the next texture */
pixels = (const void*)((const Uint8*)pixels + rect->h * pitch);
if (METAL_UpdateTextureInternal(renderer, texturedata, texturedata.mtltexture_uv, UVrect, Uslice, pixels, UVpitch) < 0) {
return -1;
}
/* Skip to the correct offset into the next texture */
pixels = (const void*)((const Uint8*)pixels + UVrect.h * UVpitch);
if (METAL_UpdateTextureInternal(renderer, texturedata, texturedata.mtltexture_uv, UVrect, Vslice, pixels, UVpitch) < 0) {
return -1;
}
}
if (texturedata.nv12) {
SDL_Rect UVrect = {rect->x / 2, rect->y / 2, (rect->w + 1) / 2, (rect->h + 1) / 2};
int UVpitch = 2 * ((pitch + 1) / 2);
/* Skip to the correct offset into the next texture */
pixels = (const void*)((const Uint8*)pixels + rect->h * pitch);
if (METAL_UpdateTextureInternal(renderer, texturedata, texturedata.mtltexture_uv, UVrect, 0, pixels, UVpitch) < 0) {
return -1;
}
}
texturedata.hasdata = YES;
return 0;
}}
static int
METAL_UpdateTextureYUV(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect,
const Uint8 *Yplane, int Ypitch,
const Uint8 *Uplane, int Upitch,
const Uint8 *Vplane, int Vpitch)
{ @autoreleasepool {
METAL_TextureData *texturedata = (__bridge METAL_TextureData *)texture->driverdata;
const int Uslice = 0;
const int Vslice = 1;
SDL_Rect UVrect = {rect->x / 2, rect->y / 2, (rect->w + 1) / 2, (rect->h + 1) / 2};
/* Bail out if we're supposed to update an empty rectangle */
if (rect->w <= 0 || rect->h <= 0) {
return 0;
}
if (METAL_UpdateTextureInternal(renderer, texturedata, texturedata.mtltexture, *rect, 0, Yplane, Ypitch) < 0) {
return -1;
}
if (METAL_UpdateTextureInternal(renderer, texturedata, texturedata.mtltexture_uv, UVrect, Uslice, Uplane, Upitch)) {
return -1;
}
if (METAL_UpdateTextureInternal(renderer, texturedata, texturedata.mtltexture_uv, UVrect, Vslice, Vplane, Vpitch)) {
return -1;
}
texturedata.hasdata = YES;
return 0;
}}
static int
METAL_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, void **pixels, int *pitch)
{ @autoreleasepool {
METAL_RenderData *data = (__bridge METAL_RenderData *) renderer->driverdata;
METAL_TextureData *texturedata = (__bridge METAL_TextureData *)texture->driverdata;
int buffersize = 0;
if (rect->w <= 0 || rect->h <= 0) {
return SDL_SetError("Invalid rectangle dimensions for LockTexture.");
}
*pitch = SDL_BYTESPERPIXEL(texture->format) * rect->w;
if (texturedata.yuv || texturedata.nv12) {
buffersize = ((*pitch) * rect->h) + (2 * (*pitch + 1) / 2) * ((rect->h + 1) / 2);
} else {
buffersize = (*pitch) * rect->h;
}
texturedata.lockedrect = *rect;
texturedata.lockedbuffer = [data.mtldevice newBufferWithLength:buffersize options:MTLResourceStorageModeShared];
if (texturedata.lockedbuffer == nil) {
return SDL_OutOfMemory();
}
*pixels = [texturedata.lockedbuffer contents];
return 0;
}}
static void
METAL_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{ @autoreleasepool {
METAL_RenderData *data = (__bridge METAL_RenderData *) renderer->driverdata;
METAL_TextureData *texturedata = (__bridge METAL_TextureData *)texture->driverdata;
SDL_Rect rect = texturedata.lockedrect;
int pitch = SDL_BYTESPERPIXEL(texture->format) * rect.w;
SDL_Rect UVrect = {rect.x / 2, rect.y / 2, (rect.w + 1) / 2, (rect.h + 1) / 2};
if (texturedata.lockedbuffer == nil) {
return;
}
if (data.mtlcmdencoder != nil) {
[data.mtlcmdencoder endEncoding];
data.mtlcmdencoder = nil;
}
if (data.mtlcmdbuffer == nil) {
data.mtlcmdbuffer = [data.mtlcmdqueue commandBuffer];
}
id<MTLBlitCommandEncoder> blitcmd = [data.mtlcmdbuffer blitCommandEncoder];
[blitcmd copyFromBuffer:texturedata.lockedbuffer
sourceOffset:0
sourceBytesPerRow:pitch
sourceBytesPerImage:0
sourceSize:MTLSizeMake(rect.w, rect.h, 1)
toTexture:texturedata.mtltexture
destinationSlice:0
destinationLevel:0
destinationOrigin:MTLOriginMake(rect.x, rect.y, 0)];
if (texturedata.yuv) {
int Uslice = texture->format == SDL_PIXELFORMAT_YV12 ? 1 : 0;
int Vslice = texture->format == SDL_PIXELFORMAT_YV12 ? 0 : 1;
int UVpitch = (pitch + 1) / 2;
[blitcmd copyFromBuffer:texturedata.lockedbuffer
sourceOffset:rect.h * pitch
sourceBytesPerRow:UVpitch
sourceBytesPerImage:UVpitch * UVrect.h
sourceSize:MTLSizeMake(UVrect.w, UVrect.h, 1)
toTexture:texturedata.mtltexture_uv
destinationSlice:Uslice
destinationLevel:0
destinationOrigin:MTLOriginMake(UVrect.x, UVrect.y, 0)];
[blitcmd copyFromBuffer:texturedata.lockedbuffer
sourceOffset:(rect.h * pitch) + UVrect.h * UVpitch
sourceBytesPerRow:UVpitch
sourceBytesPerImage:UVpitch * UVrect.h
sourceSize:MTLSizeMake(UVrect.w, UVrect.h, 1)
toTexture:texturedata.mtltexture_uv
destinationSlice:Vslice
destinationLevel:0
destinationOrigin:MTLOriginMake(UVrect.x, UVrect.y, 0)];
}
if (texturedata.nv12) {
int UVpitch = 2 * ((pitch + 1) / 2);
[blitcmd copyFromBuffer:texturedata.lockedbuffer
sourceOffset:rect.h * pitch
sourceBytesPerRow:UVpitch
sourceBytesPerImage:0
sourceSize:MTLSizeMake(UVrect.w, UVrect.h, 1)
toTexture:texturedata.mtltexture_uv
destinationSlice:0
destinationLevel:0
destinationOrigin:MTLOriginMake(UVrect.x, UVrect.y, 0)];
}
[blitcmd endEncoding];
[data.mtlcmdbuffer commit];
data.mtlcmdbuffer = nil;
#if !__has_feature(objc_arc)
[texturedata.lockedbuffer release];
#endif
texturedata.lockedbuffer = nil;
texturedata.hasdata = YES;
}}
static int
METAL_SetRenderTarget(SDL_Renderer * renderer, SDL_Texture * texture)
{ @autoreleasepool {
METAL_RenderData *data = (__bridge METAL_RenderData *) renderer->driverdata;
if (data.mtlcmdencoder) {
/* End encoding for the previous render target so we can set up a new
* render pass for this one. */
[data.mtlcmdencoder endEncoding];
[data.mtlcmdbuffer commit];
data.mtlcmdencoder = nil;
data.mtlcmdbuffer = nil;
}
/* We don't begin a new render pass right away - we delay it until an actual
* draw or clear happens. That way we can use hardware clears when possible,
* which are only available when beginning a new render pass. */
return 0;
}}
// normalize a value from 0.0f to len into 0.0f to 1.0f.
static inline float
normtex(const float _val, const float len)
{
return _val / len;
}
static int
METAL_QueueSetViewport(SDL_Renderer * renderer, SDL_RenderCommand *cmd)
{
float projection[4][4]; /* Prepare an orthographic projection */
const int w = cmd->data.viewport.rect.w;
const int h = cmd->data.viewport.rect.h;
const size_t matrixlen = sizeof (projection);
float *matrix = (float *) SDL_AllocateRenderVertices(renderer, matrixlen, CONSTANT_ALIGN, &cmd->data.viewport.first);
if (!matrix) {
return -1;
}
SDL_memset(projection, '\0', matrixlen);
if (w && h) {
projection[0][0] = 2.0f / w;
projection[1][1] = -2.0f / h;
projection[3][0] = -1.0f;
projection[3][1] = 1.0f;
projection[3][3] = 1.0f;
}
SDL_memcpy(matrix, projection, matrixlen);
return 0;
}
static int
METAL_QueueSetDrawColor(SDL_Renderer *renderer, SDL_RenderCommand *cmd)
{
const size_t vertlen = sizeof (float) * 4;
float *verts = (float *) SDL_AllocateRenderVertices(renderer, vertlen, CONSTANT_ALIGN, &cmd->data.color.first);
if (!verts) {
return -1;
}
*(verts++) = ((float)cmd->data.color.r) / 255.0f;
*(verts++) = ((float)cmd->data.color.g) / 255.0f;
*(verts++) = ((float)cmd->data.color.b) / 255.0f;
*(verts++) = ((float)cmd->data.color.a) / 255.0f;
return 0;
}
static int
METAL_QueueDrawPoints(SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_FPoint * points, int count)
{
const size_t vertlen = (sizeof (float) * 2) * count;
float *verts = (float *) SDL_AllocateRenderVertices(renderer, vertlen, 0, &cmd->data.draw.first);
if (!verts) {
return -1;
}
cmd->data.draw.count = count;
SDL_memcpy(verts, points, vertlen);
return 0;
}
static int
METAL_QueueFillRects(SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_FRect * rects, int count)
{
const size_t vertlen = (sizeof (float) * 8) * count;
float *verts = (float *) SDL_AllocateRenderVertices(renderer, vertlen, 0, &cmd->data.draw.first);
if (!verts) {
return -1;
}
cmd->data.draw.count = count;
/* Quads in the following vertex order (matches the quad index buffer):
* 1---3
* | \ |
* 0---2
*/
for (int i = 0; i < count; i++, rects++) {
if ((rects->w <= 0.0f) || (rects->h <= 0.0f)) {
cmd->data.draw.count--;
} else {
*(verts++) = rects->x;
*(verts++) = rects->y + rects->h;
*(verts++) = rects->x;
*(verts++) = rects->y;
*(verts++) = rects->x + rects->w;
*(verts++) = rects->y + rects->h;
*(verts++) = rects->x + rects->w;
*(verts++) = rects->y;
}
}
if (cmd->data.draw.count == 0) {
cmd->command = SDL_RENDERCMD_NO_OP; // nothing to do, just skip this one later.
}
return 0;
}
static int
METAL_QueueCopy(SDL_Renderer * renderer, SDL_RenderCommand *cmd, SDL_Texture * texture,
const SDL_Rect * srcrect, const SDL_FRect * dstrect)
{
const float texw = (float) texture->w;
const float texh = (float) texture->h;
// !!! FIXME: use an index buffer
const size_t vertlen = (sizeof (float) * 16);
float *verts = (float *) SDL_AllocateRenderVertices(renderer, vertlen, 0, &cmd->data.draw.first);
if (!verts) {
return -1;
}
cmd->data.draw.count = 1;
*(verts++) = dstrect->x;
*(verts++) = dstrect->y + dstrect->h;
*(verts++) = dstrect->x;
*(verts++) = dstrect->y;
*(verts++) = dstrect->x + dstrect->w;
*(verts++) = dstrect->y + dstrect->h;
*(verts++) = dstrect->x + dstrect->w;
*(verts++) = dstrect->y;
*(verts++) = normtex(srcrect->x, texw);
*(verts++) = normtex(srcrect->y + srcrect->h, texh);
*(verts++) = normtex(srcrect->x, texw);
*(verts++) = normtex(srcrect->y, texh);
*(verts++) = normtex(srcrect->x + srcrect->w, texw);
*(verts++) = normtex(srcrect->y + srcrect->h, texh);
*(verts++) = normtex(srcrect->x + srcrect->w, texw);
*(verts++) = normtex(srcrect->y, texh);
return 0;
}
static int
METAL_QueueCopyEx(SDL_Renderer * renderer, SDL_RenderCommand *cmd, SDL_Texture * texture,
const SDL_Rect * srcquad, const SDL_FRect * dstrect,
const double angle, const SDL_FPoint *center, const SDL_RendererFlip flip)
{
const float texw = (float) texture->w;
const float texh = (float) texture->h;
const float rads = (float)(M_PI * (float) angle / 180.0f);
const float c = cosf(rads), s = sinf(rads);
float minu, maxu, minv, maxv;
const size_t vertlen = (sizeof (float) * 32);
float *verts;
// cheat and store this offset in (count) because it needs to be aligned in ways other fields don't and we aren't using count otherwise.
verts = (float *) SDL_AllocateRenderVertices(renderer, vertlen, CONSTANT_ALIGN, &cmd->data.draw.count);
if (!verts) {
return -1;
}
// transform matrix
SDL_memset(verts, '\0', sizeof (*verts) * 16);
verts[10] = verts[15] = 1.0f;
// rotation
verts[0] = c;
verts[1] = s;
verts[4] = -s;
verts[5] = c;
// translation
verts[12] = dstrect->x + center->x;
verts[13] = dstrect->y + center->y;
// rest of the vertices don't need the aggressive alignment. Pack them in.
verts = (float *) SDL_AllocateRenderVertices(renderer, vertlen, 0, &cmd->data.draw.first);
if (!verts) {
return -1;
}
minu = normtex(srcquad->x, texw);
maxu = normtex(srcquad->x + srcquad->w, texw);
minv = normtex(srcquad->y, texh);
maxv = normtex(srcquad->y + srcquad->h, texh);
if (flip & SDL_FLIP_HORIZONTAL) {
float tmp = maxu;
maxu = minu;
minu = tmp;
}
if (flip & SDL_FLIP_VERTICAL) {
float tmp = maxv;
maxv = minv;
minv = tmp;
}
// vertices
*(verts++) = -center->x;
*(verts++) = dstrect->h - center->y;
*(verts++) = -center->x;
*(verts++) = -center->y;
*(verts++) = dstrect->w - center->x;
*(verts++) = dstrect->h - center->y;
*(verts++) = dstrect->w - center->x;
*(verts++) = -center->y;
// texcoords
*(verts++) = minu;
*(verts++) = maxv;
*(verts++) = minu;
*(verts++) = minv;
*(verts++) = maxu;
*(verts++) = maxv;
*(verts++) = maxu;
*(verts++) = minv;
return 0;
}
typedef struct
{
#if __has_feature(objc_arc)
__unsafe_unretained id<MTLRenderPipelineState> pipeline;
#else
id<MTLRenderPipelineState> pipeline;
#endif
size_t constants_offset;
SDL_Texture *texture;
SDL_bool cliprect_dirty;
SDL_bool cliprect_enabled;
SDL_Rect cliprect;
SDL_bool viewport_dirty;
SDL_Rect viewport;
size_t projection_offset;
SDL_bool color_dirty;
size_t color_offset;
} METAL_DrawStateCache;
static void
SetDrawState(SDL_Renderer *renderer, const SDL_RenderCommand *cmd, const SDL_MetalFragmentFunction shader,
const size_t constants_offset, id<MTLBuffer> mtlbufvertex, METAL_DrawStateCache *statecache)
{
METAL_RenderData *data = (__bridge METAL_RenderData *) renderer->driverdata;
const SDL_BlendMode blend = cmd->data.draw.blend;
size_t first = cmd->data.draw.first;
id<MTLRenderPipelineState> newpipeline;
METAL_ActivateRenderCommandEncoder(renderer, MTLLoadActionLoad, NULL);
if (statecache->viewport_dirty) {
MTLViewport viewport;
viewport.originX = statecache->viewport.x;
viewport.originY = statecache->viewport.y;
viewport.width = statecache->viewport.w;
viewport.height = statecache->viewport.h;
viewport.znear = 0.0;
viewport.zfar = 1.0;
[data.mtlcmdencoder setViewport:viewport];
[data.mtlcmdencoder setVertexBuffer:mtlbufvertex offset:statecache->projection_offset atIndex:2]; // projection
statecache->viewport_dirty = SDL_FALSE;
}
if (statecache->cliprect_dirty) {
MTLScissorRect mtlrect;
if (statecache->cliprect_enabled) {
const SDL_Rect *rect = &statecache->cliprect;
mtlrect.x = statecache->viewport.x + rect->x;
mtlrect.y = statecache->viewport.y + rect->y;
mtlrect.width = rect->w;
mtlrect.height = rect->h;
} else {
mtlrect.x = statecache->viewport.x;
mtlrect.y = statecache->viewport.y;
mtlrect.width = statecache->viewport.w;
mtlrect.height = statecache->viewport.h;
}
if (mtlrect.width > 0 && mtlrect.height > 0) {
[data.mtlcmdencoder setScissorRect:mtlrect];
}
statecache->cliprect_dirty = SDL_FALSE;
}
if (statecache->color_dirty) {
[data.mtlcmdencoder setFragmentBuffer:mtlbufvertex offset:statecache->color_offset atIndex:0];
statecache->color_dirty = SDL_FALSE;
}
newpipeline = ChoosePipelineState(data, data.activepipelines, shader, blend);
if (newpipeline != statecache->pipeline) {
[data.mtlcmdencoder setRenderPipelineState:newpipeline];
statecache->pipeline = newpipeline;
}
if (constants_offset != statecache->constants_offset) {
if (constants_offset != CONSTANTS_OFFSET_INVALID) {
[data.mtlcmdencoder setVertexBuffer:data.mtlbufconstants offset:constants_offset atIndex:3];
}
statecache->constants_offset = constants_offset;
}
[data.mtlcmdencoder setVertexBuffer:mtlbufvertex offset:first atIndex:0]; // position
}
static void
SetCopyState(SDL_Renderer *renderer, const SDL_RenderCommand *cmd, const size_t constants_offset,
id<MTLBuffer> mtlbufvertex, METAL_DrawStateCache *statecache)
{
METAL_RenderData *data = (__bridge METAL_RenderData *) renderer->driverdata;
SDL_Texture *texture = cmd->data.draw.texture;
METAL_TextureData *texturedata = (__bridge METAL_TextureData *)texture->driverdata;
SetDrawState(renderer, cmd, texturedata.fragmentFunction, constants_offset, mtlbufvertex, statecache);
[data.mtlcmdencoder setVertexBuffer:mtlbufvertex offset:cmd->data.draw.first+(8*sizeof (float)) atIndex:1]; // texcoords
if (texture != statecache->texture) {
METAL_TextureData *oldtexturedata = NULL;
if (statecache->texture) {
oldtexturedata = (__bridge METAL_TextureData *) statecache->texture->driverdata;
}
if (!oldtexturedata || (texturedata.mtlsampler != oldtexturedata.mtlsampler)) {
[data.mtlcmdencoder setFragmentSamplerState:texturedata.mtlsampler atIndex:0];
}
[data.mtlcmdencoder setFragmentTexture:texturedata.mtltexture atIndex:0];
if (texturedata.yuv || texturedata.nv12) {
[data.mtlcmdencoder setFragmentTexture:texturedata.mtltexture_uv atIndex:1];
[data.mtlcmdencoder setFragmentBuffer:data.mtlbufconstants offset:texturedata.conversionBufferOffset atIndex:1];
}
statecache->texture = texture;
}
}
static int
METAL_RunCommandQueue(SDL_Renderer * renderer, SDL_RenderCommand *cmd, void *vertices, size_t vertsize)
{ @autoreleasepool {
METAL_RenderData *data = (__bridge METAL_RenderData *) renderer->driverdata;
METAL_DrawStateCache statecache;
id<MTLBuffer> mtlbufvertex = nil;
statecache.pipeline = nil;
statecache.constants_offset = CONSTANTS_OFFSET_INVALID;
statecache.texture = NULL;
statecache.color_dirty = SDL_TRUE;
statecache.cliprect_dirty = SDL_TRUE;
statecache.viewport_dirty = SDL_TRUE;
statecache.projection_offset = 0;
statecache.color_offset = 0;
// !!! FIXME: have a ring of pre-made MTLBuffers we cycle through? How expensive is creation?
if (vertsize > 0) {
/* We can memcpy to a shared buffer from the CPU and read it from the GPU
* without any extra copying. It's a bit slower on macOS to read shared
* data from the GPU than to read managed/private data, but we avoid the
* cost of copying the data and the code's simpler. Apple's best
* practices guide recommends this approach for streamed vertex data.
* TODO: this buffer is also used for constants. Is performance still
* good for those, or should we have a managed buffer for them? */
mtlbufvertex = [data.mtldevice newBufferWithLength:vertsize options:MTLResourceStorageModeShared];
#if !__has_feature(objc_arc)
[mtlbufvertex autorelease];
#endif
mtlbufvertex.label = @"SDL vertex data";
SDL_memcpy([mtlbufvertex contents], vertices, vertsize);
}
// If there's a command buffer here unexpectedly (app requested one?). Commit it so we can start fresh.
[data.mtlcmdencoder endEncoding];
[data.mtlcmdbuffer commit];
data.mtlcmdencoder = nil;
data.mtlcmdbuffer = nil;
while (cmd) {
switch (cmd->command) {
case SDL_RENDERCMD_SETVIEWPORT: {
SDL_memcpy(&statecache.viewport, &cmd->data.viewport.rect, sizeof (statecache.viewport));
statecache.projection_offset = cmd->data.viewport.first;
statecache.viewport_dirty = SDL_TRUE;
break;
}
case SDL_RENDERCMD_SETCLIPRECT: {
SDL_memcpy(&statecache.cliprect, &cmd->data.cliprect.rect, sizeof (statecache.cliprect));
statecache.cliprect_enabled = cmd->data.cliprect.enabled;
statecache.cliprect_dirty = SDL_TRUE;
break;
}
case SDL_RENDERCMD_SETDRAWCOLOR: {
statecache.color_offset = cmd->data.color.first;
statecache.color_dirty = SDL_TRUE;
break;
}
case SDL_RENDERCMD_CLEAR: {
/* If we're already encoding a command buffer, dump it without committing it. We'd just
clear all its work anyhow, and starting a new encoder will let us use a hardware clear
operation via MTLLoadActionClear. */
if (data.mtlcmdencoder != nil) {
[data.mtlcmdencoder endEncoding];
// !!! FIXME: have to commit, or an uncommitted but enqueued buffer will prevent the frame from finishing.
[data.mtlcmdbuffer commit];
data.mtlcmdencoder = nil;
data.mtlcmdbuffer = nil;
}
// force all this state to be reconfigured on next command buffer.
statecache.pipeline = nil;
statecache.constants_offset = CONSTANTS_OFFSET_INVALID;
statecache.texture = NULL;
statecache.color_dirty = SDL_TRUE;
statecache.cliprect_dirty = SDL_TRUE;
statecache.viewport_dirty = SDL_TRUE;
const Uint8 r = cmd->data.color.r;
const Uint8 g = cmd->data.color.g;
const Uint8 b = cmd->data.color.b;
const Uint8 a = cmd->data.color.a;
MTLClearColor color = MTLClearColorMake(r / 255.0f, g / 255.0f, b / 255.0f, a / 255.0f);
// get new command encoder, set up with an initial clear operation.
METAL_ActivateRenderCommandEncoder(renderer, MTLLoadActionClear, &color);
break;
}
case SDL_RENDERCMD_DRAW_POINTS:
case SDL_RENDERCMD_DRAW_LINES: {
const size_t count = cmd->data.draw.count;
const MTLPrimitiveType primtype = (cmd->command == SDL_RENDERCMD_DRAW_POINTS) ? MTLPrimitiveTypePoint : MTLPrimitiveTypeLineStrip;
SetDrawState(renderer, cmd, SDL_METAL_FRAGMENT_SOLID, CONSTANTS_OFFSET_HALF_PIXEL_TRANSFORM, mtlbufvertex, &statecache);
[data.mtlcmdencoder drawPrimitives:primtype vertexStart:0 vertexCount:count];
break;
}
case SDL_RENDERCMD_FILL_RECTS: {
const size_t count = cmd->data.draw.count;
const size_t maxcount = UINT16_MAX / 4;
SetDrawState(renderer, cmd, SDL_METAL_FRAGMENT_SOLID, CONSTANTS_OFFSET_IDENTITY, mtlbufvertex, &statecache);
/* Our index buffer has 16 bit indices, so we can only draw 65k
* vertices (16k rects) at a time. */
for (size_t i = 0; i < count; i += maxcount) {
/* Set the vertex buffer offset for our current positions.
* The vertex buffer itself was bound in SetDrawState. */
[data.mtlcmdencoder setVertexBufferOffset:cmd->data.draw.first + i*sizeof(float)*8 atIndex:0];
[data.mtlcmdencoder drawIndexedPrimitives:MTLPrimitiveTypeTriangle
indexCount:SDL_min(maxcount, count - i) * 6
indexType:MTLIndexTypeUInt16
indexBuffer:data.mtlbufquadindices
indexBufferOffset:0];
}
break;
}
case SDL_RENDERCMD_COPY: {
SetCopyState(renderer, cmd, CONSTANTS_OFFSET_IDENTITY, mtlbufvertex, &statecache);
[data.mtlcmdencoder drawPrimitives:MTLPrimitiveTypeTriangleStrip vertexStart:0 vertexCount:4];
break;
}
case SDL_RENDERCMD_COPY_EX: {
SetCopyState(renderer, cmd, CONSTANTS_OFFSET_INVALID, mtlbufvertex, &statecache);
[data.mtlcmdencoder setVertexBuffer:mtlbufvertex offset:cmd->data.draw.count atIndex:3]; // transform
[data.mtlcmdencoder drawPrimitives:MTLPrimitiveTypeTriangleStrip vertexStart:0 vertexCount:4];
break;
}
case SDL_RENDERCMD_NO_OP:
break;
}
cmd = cmd->next;
}
return 0;
}}
static int
METAL_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
Uint32 pixel_format, void * pixels, int pitch)
{ @autoreleasepool {
METAL_RenderData *data = (__bridge METAL_RenderData *) renderer->driverdata;
METAL_ActivateRenderCommandEncoder(renderer, MTLLoadActionLoad, NULL);
[data.mtlcmdencoder endEncoding];
id<MTLTexture> mtltexture = data.mtlpassdesc.colorAttachments[0].texture;
#ifdef __MACOSX__
/* on macOS with managed-storage textures, we need to tell the driver to
* update the CPU-side copy of the texture data.
* NOTE: Currently all of our textures are managed on macOS. We'll need some
* extra copying for any private textures. */
if (METAL_GetStorageMode(mtltexture) == MTLStorageModeManaged) {
id<MTLBlitCommandEncoder> blit = [data.mtlcmdbuffer blitCommandEncoder];
[blit synchronizeResource:mtltexture];
[blit endEncoding];
}
#endif
/* Commit the current command buffer and wait until it's completed, to make
* sure the GPU has finished rendering to it by the time we read it. */
[data.mtlcmdbuffer commit];
[data.mtlcmdbuffer waitUntilCompleted];
data.mtlcmdencoder = nil;
data.mtlcmdbuffer = nil;
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;
void *temp_pixels = SDL_malloc(temp_pitch * rect->h);
if (!temp_pixels) {
return SDL_OutOfMemory();
}
[mtltexture getBytes:temp_pixels bytesPerRow:temp_pitch fromRegion:mtlregion mipmapLevel:0];
const Uint32 temp_format = (mtltexture.pixelFormat == MTLPixelFormatBGRA8Unorm) ? SDL_PIXELFORMAT_ARGB8888 : SDL_PIXELFORMAT_ABGR8888;
const int status = SDL_ConvertPixels(rect->w, rect->h, temp_format, temp_pixels, temp_pitch, pixel_format, pixels, pitch);
SDL_free(temp_pixels);
return status;
}}
static void
METAL_RenderPresent(SDL_Renderer * renderer)
{ @autoreleasepool {
METAL_RenderData *data = (__bridge METAL_RenderData *) renderer->driverdata;
if (data.mtlcmdencoder != nil) {
[data.mtlcmdencoder endEncoding];
}
if (data.mtlbackbuffer != nil) {
[data.mtlcmdbuffer presentDrawable:data.mtlbackbuffer];
}
if (data.mtlcmdbuffer != nil) {
[data.mtlcmdbuffer commit];
}
data.mtlcmdencoder = nil;
data.mtlcmdbuffer = nil;
data.mtlbackbuffer = nil;
}}
static void
METAL_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{ @autoreleasepool {
CFBridgingRelease(texture->driverdata);
texture->driverdata = NULL;
}}
static void
METAL_DestroyRenderer(SDL_Renderer * renderer)
{ @autoreleasepool {
if (renderer->driverdata) {
METAL_RenderData *data = CFBridgingRelease(renderer->driverdata);
if (data.mtlcmdencoder != nil) {
[data.mtlcmdencoder endEncoding];
}
DestroyAllPipelines(data.allpipelines, data.pipelinescount);
}
SDL_free(renderer);
}}
static void *
METAL_GetMetalLayer(SDL_Renderer * renderer)
{ @autoreleasepool {
METAL_RenderData *data = (__bridge METAL_RenderData *) renderer->driverdata;
return (__bridge void*)data.mtllayer;
}}
static void *
METAL_GetMetalCommandEncoder(SDL_Renderer * renderer)
{ @autoreleasepool {
METAL_ActivateRenderCommandEncoder(renderer, MTLLoadActionLoad, NULL);
METAL_RenderData *data = (__bridge METAL_RenderData *) renderer->driverdata;
return (__bridge void*)data.mtlcmdencoder;
}}
static SDL_Renderer *
METAL_CreateRenderer(SDL_Window * window, Uint32 flags)
{ @autoreleasepool {
SDL_Renderer *renderer = NULL;
METAL_RenderData *data = NULL;
id<MTLDevice> mtldevice = nil;
SDL_SysWMinfo syswm;
SDL_VERSION(&syswm.version);
if (!SDL_GetWindowWMInfo(window, &syswm)) {
return NULL;
}
if (IsMetalAvailable(&syswm) == -1) {
return NULL;
}
renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
if (!renderer) {
SDL_OutOfMemory();
return NULL;
}
// !!! FIXME: MTLCopyAllDevices() can find other GPUs on macOS...
mtldevice = MTLCreateSystemDefaultDevice();
if (mtldevice == nil) {
SDL_free(renderer);
SDL_SetError("Failed to obtain Metal device");
return NULL;
}
// !!! FIXME: error checking on all of this.
data = [[METAL_RenderData alloc] init];
renderer->driverdata = (void*)CFBridgingRetain(data);
renderer->window = window;
#ifdef __MACOSX__
NSView *view = Cocoa_Mtl_AddMetalView(window);
CAMetalLayer *layer = (CAMetalLayer *)[view layer];
layer.device = mtldevice;
//layer.colorspace = nil;
#else
UIView *view = UIKit_Mtl_AddMetalView(window);
CAMetalLayer *layer = (CAMetalLayer *)[view layer];
#endif
// Necessary for RenderReadPixels.
layer.framebufferOnly = NO;
data.mtldevice = layer.device;
data.mtllayer = layer;
id<MTLCommandQueue> mtlcmdqueue = [data.mtldevice newCommandQueue];
data.mtlcmdqueue = mtlcmdqueue;
data.mtlcmdqueue.label = @"SDL Metal Renderer";
data.mtlpassdesc = [MTLRenderPassDescriptor renderPassDescriptor];
NSError *err = nil;
// The compiled .metallib is embedded in a static array in a header file
// but the original shader source code is in SDL_shaders_metal.metal.
dispatch_data_t mtllibdata = dispatch_data_create(sdl_metallib, sdl_metallib_len, dispatch_get_global_queue(0, 0), ^{});
id<MTLLibrary> mtllibrary = [data.mtldevice newLibraryWithData:mtllibdata error:&err];
data.mtllibrary = mtllibrary;
SDL_assert(err == nil);
#if !__has_feature(objc_arc)
dispatch_release(mtllibdata);
#endif
data.mtllibrary.label = @"SDL Metal renderer shader library";
/* Do some shader pipeline state loading up-front rather than on demand. */
data.pipelinescount = 0;
data.allpipelines = NULL;
ChooseShaderPipelines(data, MTLPixelFormatBGRA8Unorm);
MTLSamplerDescriptor *samplerdesc = [[MTLSamplerDescriptor alloc] init];
samplerdesc.minFilter = MTLSamplerMinMagFilterNearest;
samplerdesc.magFilter = MTLSamplerMinMagFilterNearest;
id<MTLSamplerState> mtlsamplernearest = [data.mtldevice newSamplerStateWithDescriptor:samplerdesc];
data.mtlsamplernearest = mtlsamplernearest;
samplerdesc.minFilter = MTLSamplerMinMagFilterLinear;
samplerdesc.magFilter = MTLSamplerMinMagFilterLinear;
id<MTLSamplerState> mtlsamplerlinear = [data.mtldevice newSamplerStateWithDescriptor:samplerdesc];
data.mtlsamplerlinear = mtlsamplerlinear;
/* Note: matrices are column major. */
float identitytransform[16] = {
1.0f, 0.0f, 0.0f, 0.0f,
0.0f, 1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f,
};
float halfpixeltransform[16] = {
1.0f, 0.0f, 0.0f, 0.0f,
0.0f, 1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, 0.0f, 1.0f,
};
/* Metal pads float3s to 16 bytes. */
float decodetransformJPEG[4*4] = {
0.0, -0.501960814, -0.501960814, 0.0, /* offset */
1.0000, 0.0000, 1.4020, 0.0, /* Rcoeff */
1.0000, -0.3441, -0.7141, 0.0, /* Gcoeff */
1.0000, 1.7720, 0.0000, 0.0, /* Bcoeff */
};
float decodetransformBT601[4*4] = {
-0.0627451017, -0.501960814, -0.501960814, 0.0, /* offset */
1.1644, 0.0000, 1.5960, 0.0, /* Rcoeff */
1.1644, -0.3918, -0.8130, 0.0, /* Gcoeff */
1.1644, 2.0172, 0.0000, 0.0, /* Bcoeff */
};
float decodetransformBT709[4*4] = {
0.0, -0.501960814, -0.501960814, 0.0, /* offset */
1.0000, 0.0000, 1.4020, 0.0, /* Rcoeff */
1.0000, -0.3441, -0.7141, 0.0, /* Gcoeff */
1.0000, 1.7720, 0.0000, 0.0, /* Bcoeff */
};
id<MTLBuffer> mtlbufconstantstaging = [data.mtldevice newBufferWithLength:CONSTANTS_LENGTH options:MTLResourceStorageModeShared];
#if !__has_feature(objc_arc)
[mtlbufconstantstaging autorelease];
#endif
char *constantdata = [mtlbufconstantstaging contents];
SDL_memcpy(constantdata + CONSTANTS_OFFSET_IDENTITY, identitytransform, sizeof(identitytransform));
SDL_memcpy(constantdata + CONSTANTS_OFFSET_HALF_PIXEL_TRANSFORM, halfpixeltransform, sizeof(halfpixeltransform));
SDL_memcpy(constantdata + CONSTANTS_OFFSET_DECODE_JPEG, decodetransformJPEG, sizeof(decodetransformJPEG));
SDL_memcpy(constantdata + CONSTANTS_OFFSET_DECODE_BT601, decodetransformBT601, sizeof(decodetransformBT601));
SDL_memcpy(constantdata + CONSTANTS_OFFSET_DECODE_BT709, decodetransformBT709, sizeof(decodetransformBT709));
int quadcount = UINT16_MAX / 4;
size_t indicessize = sizeof(UInt16) * quadcount * 6;
id<MTLBuffer> mtlbufquadindicesstaging = [data.mtldevice newBufferWithLength:indicessize options:MTLResourceStorageModeShared];
#if !__has_feature(objc_arc)
[mtlbufquadindicesstaging autorelease];
#endif
/* Quads in the following vertex order (matches the FillRects vertices):
* 1---3
* | \ |
* 0---2
*/
UInt16 *indexdata = [mtlbufquadindicesstaging contents];
for (int i = 0; i < quadcount; i++) {
indexdata[i * 6 + 0] = i * 4 + 0;
indexdata[i * 6 + 1] = i * 4 + 1;
indexdata[i * 6 + 2] = i * 4 + 2;
indexdata[i * 6 + 3] = i * 4 + 2;
indexdata[i * 6 + 4] = i * 4 + 1;
indexdata[i * 6 + 5] = i * 4 + 3;
}
id<MTLBuffer> mtlbufconstants = [data.mtldevice newBufferWithLength:CONSTANTS_LENGTH options:MTLResourceStorageModePrivate];
data.mtlbufconstants = mtlbufconstants;
data.mtlbufconstants.label = @"SDL constant data";
id<MTLBuffer> mtlbufquadindices = [data.mtldevice newBufferWithLength:indicessize options:MTLResourceStorageModePrivate];
data.mtlbufquadindices = mtlbufquadindices;
data.mtlbufquadindices.label = @"SDL quad index buffer";
id<MTLCommandBuffer> cmdbuffer = [data.mtlcmdqueue commandBuffer];
id<MTLBlitCommandEncoder> blitcmd = [cmdbuffer blitCommandEncoder];
[blitcmd copyFromBuffer:mtlbufconstantstaging sourceOffset:0 toBuffer:mtlbufconstants destinationOffset:0 size:CONSTANTS_LENGTH];
[blitcmd copyFromBuffer:mtlbufquadindicesstaging sourceOffset:0 toBuffer:mtlbufquadindices destinationOffset:0 size:indicessize];
[blitcmd endEncoding];
[cmdbuffer commit];
// !!! FIXME: force more clears here so all the drawables are sane to start, and our static buffers are definitely flushed.
renderer->WindowEvent = METAL_WindowEvent;
renderer->GetOutputSize = METAL_GetOutputSize;
renderer->SupportsBlendMode = METAL_SupportsBlendMode;
renderer->CreateTexture = METAL_CreateTexture;
renderer->UpdateTexture = METAL_UpdateTexture;
renderer->UpdateTextureYUV = METAL_UpdateTextureYUV;
renderer->LockTexture = METAL_LockTexture;
renderer->UnlockTexture = METAL_UnlockTexture;
renderer->SetRenderTarget = METAL_SetRenderTarget;
renderer->QueueSetViewport = METAL_QueueSetViewport;
renderer->QueueSetDrawColor = METAL_QueueSetDrawColor;
renderer->QueueDrawPoints = METAL_QueueDrawPoints;
renderer->QueueDrawLines = METAL_QueueDrawPoints; // lines and points queue the same way.
renderer->QueueFillRects = METAL_QueueFillRects;
renderer->QueueCopy = METAL_QueueCopy;
renderer->QueueCopyEx = METAL_QueueCopyEx;
renderer->RunCommandQueue = METAL_RunCommandQueue;
renderer->RenderReadPixels = METAL_RenderReadPixels;
renderer->RenderPresent = METAL_RenderPresent;
renderer->DestroyTexture = METAL_DestroyTexture;
renderer->DestroyRenderer = METAL_DestroyRenderer;
renderer->GetMetalLayer = METAL_GetMetalLayer;
renderer->GetMetalCommandEncoder = METAL_GetMetalCommandEncoder;
renderer->info = METAL_RenderDriver.info;
renderer->info.flags = (SDL_RENDERER_ACCELERATED | SDL_RENDERER_TARGETTEXTURE);
renderer->always_batch = SDL_TRUE;
#if defined(__MACOSX__) && defined(MAC_OS_X_VERSION_10_13)
if (@available(macOS 10.13, *)) {
data.mtllayer.displaySyncEnabled = (flags & SDL_RENDERER_PRESENTVSYNC) != 0;
if (data.mtllayer.displaySyncEnabled) {
renderer->info.flags |= SDL_RENDERER_PRESENTVSYNC;
}
} else
#endif
{
renderer->info.flags |= SDL_RENDERER_PRESENTVSYNC;
}
/* https://developer.apple.com/metal/Metal-Feature-Set-Tables.pdf */
int maxtexsize = 4096;
#if defined(__MACOSX__)
maxtexsize = 16384;
#elif defined(__TVOS__)
maxtexsize = 8192;
#ifdef __TVOS_11_0
if (@available(tvOS 11.0, *)) {
if ([mtldevice supportsFeatureSet:MTLFeatureSet_tvOS_GPUFamily2_v1]) {
maxtexsize = 16384;
}
}
#endif
#else
#ifdef __IPHONE_11_0
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wunguarded-availability-new"
if ([mtldevice supportsFeatureSet:MTLFeatureSet_iOS_GPUFamily4_v1]) {
maxtexsize = 16384;
} else
#pragma clang diagnostic pop
#endif
#ifdef __IPHONE_10_0
if ([mtldevice supportsFeatureSet:MTLFeatureSet_iOS_GPUFamily3_v1]) {
maxtexsize = 16384;
} else
#endif
if ([mtldevice supportsFeatureSet:MTLFeatureSet_iOS_GPUFamily2_v2] || [mtldevice supportsFeatureSet:MTLFeatureSet_iOS_GPUFamily1_v2]) {
maxtexsize = 8192;
} else {
maxtexsize = 4096;
}
#endif
renderer->info.max_texture_width = maxtexsize;
renderer->info.max_texture_height = maxtexsize;
#if !__has_feature(objc_arc)
[mtlcmdqueue release];
[mtllibrary release];
[samplerdesc release];
[mtlsamplernearest release];
[mtlsamplerlinear release];
[mtlbufconstants release];
[mtlbufquadindices release];
[view release];
[data release];
[mtldevice release];
#endif
return renderer;
}}
SDL_RenderDriver METAL_RenderDriver = {
METAL_CreateRenderer,
{
"metal",
(SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_TARGETTEXTURE),
6,
{
SDL_PIXELFORMAT_ARGB8888,
SDL_PIXELFORMAT_ABGR8888,
SDL_PIXELFORMAT_YV12,
SDL_PIXELFORMAT_IYUV,
SDL_PIXELFORMAT_NV12,
SDL_PIXELFORMAT_NV21
},
0, 0,
}
};
#endif /* SDL_VIDEO_RENDER_METAL && !SDL_RENDER_DISABLED */
/* vi: set ts=4 sw=4 expandtab: */
points
GLfixed GLfixed GLint GLint GLfixed points
Definition: SDL_opengl_glext.h:4558
SDL_memset
#define SDL_memset
Definition: SDL_dynapi_overrides.h:386
c
const GLubyte * c
Definition: SDL_opengl_glext.h:11093
Uint32
uint32_t Uint32
Definition: SDL_stdinc.h:203
SDL_GetPixelFormatName
#define SDL_GetPixelFormatName
Definition: SDL_dynapi_overrides.h:277
SDL_BLENDOPERATION_SUBTRACT
@ SDL_BLENDOPERATION_SUBTRACT
Definition: SDL_blendmode.h:65
offset
GLintptr offset
Definition: SDL_opengl_glext.h:538
blendMode
static SDL_BlendMode blendMode
Definition: testdraw2.c:34
SDL_BLENDOPERATION_ADD
@ SDL_BLENDOPERATION_ADD
Definition: SDL_blendmode.h:64
SDL_BLENDFACTOR_SRC_ALPHA
@ SDL_BLENDFACTOR_SRC_ALPHA
Definition: SDL_blendmode.h:81
SDL_BLENDFACTOR_ONE_MINUS_SRC_ALPHA
@ SDL_BLENDFACTOR_ONE_MINUS_SRC_ALPHA
Definition: SDL_blendmode.h:82
SDL_Renderer::GetMetalLayer
void *(* GetMetalLayer)(SDL_Renderer *renderer)
Definition: SDL_sysrender.h:166
SDL_BLENDOPERATION_REV_SUBTRACT
@ SDL_BLENDOPERATION_REV_SUBTRACT
Definition: SDL_blendmode.h:66
SDL_Renderer::QueueCopyEx
int(* QueueCopyEx)(SDL_Renderer *renderer, SDL_RenderCommand *cmd, SDL_Texture *texture, const SDL_Rect *srcquad, const SDL_FRect *dstrect, const double angle, const SDL_FPoint *center, const SDL_RendererFlip flip)
Definition: SDL_sysrender.h:140
SDL_BLENDMODE_ADD
@ SDL_BLENDMODE_ADD
Definition: SDL_blendmode.h:47
SDL_AllocateRenderVertices
void * SDL_AllocateRenderVertices(SDL_Renderer *renderer, const size_t numbytes, const size_t alignment, size_t *offset)
Definition: SDL_render.c:284
SDL_BLENDFACTOR_ONE_MINUS_DST_COLOR
@ SDL_BLENDFACTOR_ONE_MINUS_DST_COLOR
Definition: SDL_blendmode.h:84
SDL_RenderCommand::cliprect
struct SDL_RenderCommand::@30::@32 cliprect
SDL_Renderer::RunCommandQueue
int(* RunCommandQueue)(SDL_Renderer *renderer, SDL_RenderCommand *cmd, void *vertices, size_t vertsize)
Definition: SDL_sysrender.h:143
SDL_PIXELFORMAT_NV21
@ SDL_PIXELFORMAT_NV21
Definition: SDL_pixels.h:289
NULL
#define NULL
Definition: begin_code.h:167
SDL_ScaleModeNearest
@ SDL_ScaleModeNearest
Definition: SDL_sysrender.h:37
layer
GLenum GLuint GLint GLint layer
Definition: SDL_opengl_glext.h:1186
b
GLboolean GLboolean GLboolean b
Definition: SDL_opengl_glext.h:1109
SDL_Renderer::SetRenderTarget
int(* SetRenderTarget)(SDL_Renderer *renderer, SDL_Texture *texture)
Definition: SDL_sysrender.h:155
g
GLboolean GLboolean g
Definition: SDL_opengl_glext.h:1109
mode
GLenum mode
Definition: SDL_opengl_glext.h:1122
SDL_VERSION
#define SDL_VERSION(x)
Macro to determine SDL version program was compiled against.
Definition: SDL_version.h:79
SDL_SysWMinfo
Definition: SDL_syswm.h:197
SDL_zerop
#define SDL_zerop(x)
Definition: SDL_stdinc.h:417
SDL_log.h
SDL_BLENDOPERATION_MINIMUM
@ SDL_BLENDOPERATION_MINIMUM
Definition: SDL_blendmode.h:67
count
GLuint GLuint GLsizei count
Definition: SDL_opengl.h:1571
SDL_RenderCommand::next
struct SDL_RenderCommand * next
Definition: SDL_sysrender.h:110
SDL_BlendOperation
SDL_BlendOperation
The blend operation used when combining source and destination pixel components.
Definition: SDL_blendmode.h:62
r
GLdouble GLdouble GLdouble r
Definition: SDL_opengl.h:2079
SDL_realloc
#define SDL_realloc
Definition: SDL_dynapi_overrides.h:376
viewport
SDL_Rect viewport
Definition: testviewport.c:28
SDL_RenderDriver
Definition: SDL_sysrender.h:236
SDL_FRect::x
float x
Definition: SDL_rect.h:89
SDL_Renderer::WindowEvent
void(* WindowEvent)(SDL_Renderer *renderer, const SDL_WindowEvent *event)
Definition: SDL_sysrender.h:126
a
GLboolean GLboolean GLboolean GLboolean a
Definition: SDL_opengl_glext.h:1109
h
GLfloat GLfloat GLfloat GLfloat h
Definition: SDL_opengl_glext.h:1946
SDL_RendererFlip
SDL_RendererFlip
Flip constants for SDL_RenderCopyEx.
Definition: SDL_render.h:111
SDL_Rect::x
int x
Definition: SDL_rect.h:79
SDL_RENDERCMD_COPY
@ SDL_RENDERCMD_COPY
Definition: SDL_sysrender.h:82
shader
GLuint shader
Definition: SDL_opengl_glext.h:659
SDL_RENDERCMD_SETCLIPRECT
@ SDL_RENDERCMD_SETCLIPRECT
Definition: SDL_sysrender.h:76
SDL_PIXELFORMAT_IYUV
@ SDL_PIXELFORMAT_IYUV
Definition: SDL_pixels.h:279
data
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: SDL_opengl.h:1974
SDL_Rect::w
int w
Definition: SDL_rect.h:80
SDL_Window
The type used to identify a window.
Definition: SDL_sysvideo.h:73
SDL_YUV_CONVERSION_JPEG
@ SDL_YUV_CONVERSION_JPEG
Definition: SDL_surface.h:106
SDL_WINDOWEVENT_SHOWN
@ SDL_WINDOWEVENT_SHOWN
Definition: SDL_video.h:149
SDL_BLENDMODE_MOD
@ SDL_BLENDMODE_MOD
Definition: SDL_blendmode.h:50
SDL_BLENDFACTOR_ONE_MINUS_SRC_COLOR
@ SDL_BLENDFACTOR_ONE_MINUS_SRC_COLOR
Definition: SDL_blendmode.h:80
len
GLenum GLsizei len
Definition: SDL_opengl_glext.h:2926
SDL_BLENDMODE_NONE
@ SDL_BLENDMODE_NONE
Definition: SDL_blendmode.h:42
SDL_memcpy
#define SDL_memcpy
Definition: SDL_dynapi_overrides.h:387
event
struct _cl_event * event
Definition: SDL_opengl_glext.h:2649
SDL_Renderer
Definition: SDL_sysrender.h:122
SDL_FALSE
@ SDL_FALSE
Definition: SDL_stdinc.h:163
SDL_Renderer::QueueSetDrawColor
int(* QueueSetDrawColor)(SDL_Renderer *renderer, SDL_RenderCommand *cmd)
Definition: SDL_sysrender.h:131
usage
GLsizeiptr const void GLenum usage
Definition: SDL_opengl_glext.h:537
SDL_FPoint
The structure that defines a point (floating point)
Definition: SDL_rect.h:60
SDL_Renderer::driverdata
void * driverdata
Definition: SDL_sysrender.h:232
SDL_FRect::y
float y
Definition: SDL_rect.h:90
SDL_SYSWM_COCOA
@ SDL_SYSWM_COCOA
Definition: SDL_syswm.h:125
SDL_FLIP_HORIZONTAL
@ SDL_FLIP_HORIZONTAL
Definition: SDL_render.h:114
x
GLint GLint GLint GLint GLint x
Definition: SDL_opengl.h:1574
SDL_SysWMinfo::subsystem
SDL_SYSWM_TYPE subsystem
Definition: SDL_syswm.h:200
color
GLuint color
Definition: SDL_opengl_glext.h:1148
window
EGLSurface EGLNativeWindowType * window
Definition: eglext.h:1025
label
GLuint GLsizei const GLchar * label
Definition: SDL_opengl_glext.h:2485
SDL_RendererInfo::flags
Uint32 flags
Definition: SDL_render.h:81
SDL_Rect::y
int y
Definition: SDL_rect.h:79
SDL_Rect::h
int h
Definition: SDL_rect.h:80
SDL_free
#define SDL_free
Definition: SDL_dynapi_overrides.h:377
f
GLfloat f
Definition: SDL_opengl_glext.h:1870
SDL_Renderer::SupportsBlendMode
SDL_bool(* SupportsBlendMode)(SDL_Renderer *renderer, SDL_BlendMode blendMode)
Definition: SDL_sysrender.h:128
SDL_RENDERCMD_SETVIEWPORT
@ SDL_RENDERCMD_SETVIEWPORT
Definition: SDL_sysrender.h:75
SDL_Renderer::QueueDrawLines
int(* QueueDrawLines)(SDL_Renderer *renderer, SDL_RenderCommand *cmd, const SDL_FPoint *points, int count)
Definition: SDL_sysrender.h:134
SDL_RENDERER_PRESENTVSYNC
@ SDL_RENDERER_PRESENTVSYNC
Definition: SDL_render.h:69
SDL_RenderCommand::color
struct SDL_RenderCommand::@30::@34 color
SDL_RENDERCMD_DRAW_POINTS
@ SDL_RENDERCMD_DRAW_POINTS
Definition: SDL_sysrender.h:79
SDL_BLENDFACTOR_ONE_MINUS_DST_ALPHA
@ SDL_BLENDFACTOR_ONE_MINUS_DST_ALPHA
Definition: SDL_blendmode.h:86
rect
SDL_Rect rect
Definition: testrelative.c:27
SDL_YUV_CONVERSION_MODE
SDL_YUV_CONVERSION_MODE
The formula used for converting between YUV and RGB.
Definition: SDL_surface.h:104
SDL_BlendFactor
SDL_BlendFactor
The normalized factor used to multiply pixel components.
Definition: SDL_blendmode.h:75
SDL_assert.h
SetDrawState
static void SetDrawState(SDL_Surface *surface, SW_DrawStateCache *drawstate)
Definition: SDL_render_sw.c:584
SDL_Renderer::always_batch
SDL_bool always_batch
Definition: SDL_sysrender.h:212
SDL_SYSWM_UIKIT
@ SDL_SYSWM_UIKIT
Definition: SDL_syswm.h:126
SDL_GetBlendModeDstAlphaFactor
SDL_BlendFactor SDL_GetBlendModeDstAlphaFactor(SDL_BlendMode blendMode)
Definition: SDL_render.c:3370
SDL_RenderCommand::command
SDL_RenderCommandType command
Definition: SDL_sysrender.h:88
SDL_RENDERCMD_NO_OP
@ SDL_RENDERCMD_NO_OP
Definition: SDL_sysrender.h:74
SDL_Renderer::QueueSetViewport
int(* QueueSetViewport)(SDL_Renderer *renderer, SDL_RenderCommand *cmd)
Definition: SDL_sysrender.h:130
SDL_shaders_metal_ios.h
SDL_PIXELFORMAT_ARGB8888
@ SDL_PIXELFORMAT_ARGB8888
Definition: SDL_pixels.h:248
SDL_BLENDOPERATION_MAXIMUM
@ SDL_BLENDOPERATION_MAXIMUM
Definition: SDL_blendmode.h:68
sdl_metallib
const unsigned char sdl_metallib[]
Definition: SDL_shaders_metal_ios.h:1
SDL_assert
#define SDL_assert(condition)
Definition: SDL_assert.h:169
SDL_BLENDFACTOR_ZERO
@ SDL_BLENDFACTOR_ZERO
Definition: SDL_blendmode.h:77
SDL_RENDERCMD_DRAW_LINES
@ SDL_RENDERCMD_DRAW_LINES
Definition: SDL_sysrender.h:80
pixels
GLint GLint GLsizei GLsizei GLsizei GLint GLenum GLenum const GLvoid * pixels
Definition: SDL_opengl.h:1572
SDL_Renderer::GetOutputSize
int(* GetOutputSize)(SDL_Renderer *renderer, int *w, int *h)
Definition: SDL_sysrender.h:127
SDL_RenderCommand::data
union SDL_RenderCommand::@30 data
SDL_BLENDFACTOR_DST_COLOR
@ SDL_BLENDFACTOR_DST_COLOR
Definition: SDL_blendmode.h:83
SDL_OutOfMemory
#define SDL_OutOfMemory()
Definition: SDL_error.h:52
SDL_Renderer::CreateTexture
int(* CreateTexture)(SDL_Renderer *renderer, SDL_Texture *texture)
Definition: SDL_sysrender.h:129
SDL_BLENDMODE_BLEND
@ SDL_BLENDMODE_BLEND
Definition: SDL_blendmode.h:44
y
GLint GLint GLint GLint GLint GLint y
Definition: SDL_opengl.h:1574
SDL_RENDERCMD_FILL_RECTS
@ SDL_RENDERCMD_FILL_RECTS
Definition: SDL_sysrender.h:81
available
static int available()
Definition: video.c:356
id
GLuint id
Definition: SDL_opengl_glext.h:528
SDL_Renderer::DestroyRenderer
void(* DestroyRenderer)(SDL_Renderer *renderer)
Definition: SDL_sysrender.h:161
SDL_Renderer::LockTexture
int(* LockTexture)(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect *rect, void **pixels, int *pitch)
Definition: SDL_sysrender.h:152
SDL_Renderer::GetMetalCommandEncoder
void *(* GetMetalCommandEncoder)(SDL_Renderer *renderer)
Definition: SDL_sysrender.h:167
SDL_calloc
#define SDL_calloc
Definition: SDL_dynapi_overrides.h:375
first
const GLint * first
Definition: SDL_opengl_glext.h:368
SDL_Renderer::RenderReadPixels
int(* RenderReadPixels)(SDL_Renderer *renderer, const SDL_Rect *rect, Uint32 format, void *pixels, int pitch)
Definition: SDL_sysrender.h:156
SDL_GetBlendModeSrcAlphaFactor
SDL_BlendFactor SDL_GetBlendModeSrcAlphaFactor(SDL_BlendMode blendMode)
Definition: SDL_render.c:3363
SDL_GetBlendModeColorOperation
SDL_BlendOperation SDL_GetBlendModeColorOperation(SDL_BlendMode blendMode)
Definition: SDL_render.c:3356
SDL_RENDERCMD_COPY_EX
@ SDL_RENDERCMD_COPY_EX
Definition: SDL_sysrender.h:83
SDL_GetWindowWMInfo
#define SDL_GetWindowWMInfo
Definition: SDL_dynapi_overrides.h:473
SDL_RenderCommand
Definition: SDL_sysrender.h:86
renderer
static SDL_Renderer * renderer
Definition: testaudiocapture.c:21
SDL_TRUE
@ SDL_TRUE
Definition: SDL_stdinc.h:164
SDL_GetBlendModeDstColorFactor
SDL_BlendFactor SDL_GetBlendModeDstColorFactor(SDL_BlendMode blendMode)
Definition: SDL_render.c:3349
SDL_SysWMinfo::version
SDL_version version
Definition: SDL_syswm.h:199
SDL_Renderer::info
SDL_RendererInfo info
Definition: SDL_sysrender.h:170
SDL_RENDERER_TARGETTEXTURE
@ SDL_RENDERER_TARGETTEXTURE
Definition: SDL_render.h:71
SDL_SetError
#define SDL_SetError
Definition: SDL_dynapi_overrides.h:30
SDL_Renderer::RenderPresent
void(* RenderPresent)(SDL_Renderer *renderer)
Definition: SDL_sysrender.h:158
SDL_BYTESPERPIXEL
#define SDL_BYTESPERPIXEL(X)
Definition: SDL_pixels.h:128
s
GLdouble s
Definition: SDL_opengl.h:2063
SDL_Rect
A rectangle, with the origin at the upper left (integer).
Definition: SDL_rect.h:77
SDL_RendererInfo::max_texture_width
int max_texture_width
Definition: SDL_render.h:84
METAL_RenderDriver
SDL_RenderDriver METAL_RenderDriver
pipelines
const GLuint * pipelines
Definition: SDL_opengl_glext.h:1879
SDL_RenderCommand::viewport
struct SDL_RenderCommand::@30::@31 viewport
SDL_BLENDFACTOR_SRC_COLOR
@ SDL_BLENDFACTOR_SRC_COLOR
Definition: SDL_blendmode.h:79
SDL_Texture
Definition: SDL_sysrender.h:43
SDL_Renderer::QueueFillRects
int(* QueueFillRects)(SDL_Renderer *renderer, SDL_RenderCommand *cmd, const SDL_FRect *rects, int count)
Definition: SDL_sysrender.h:136
SDL_Renderer::UpdateTexture
int(* UpdateTexture)(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect *rect, const void *pixels, int pitch)
Definition: SDL_sysrender.h:144
SDL_hints.h
SDL_PIXELFORMAT_NV12
@ SDL_PIXELFORMAT_NV12
Definition: SDL_pixels.h:287
SDL_TEXTUREACCESS_TARGET
@ SDL_TEXTUREACCESS_TARGET
Definition: SDL_render.h:95
SDL_WindowEvent
Window state change event data (event.window.*)
Definition: SDL_events.h:195
SDL_FRect
A rectangle, with the origin at the upper left (floating point).
Definition: SDL_rect.h:87
SDL_RenderCommand::draw
struct SDL_RenderCommand::@30::@33 draw
SDL_RenderDriver::info
SDL_RendererInfo info
Definition: SDL_sysrender.h:241
SDL_ConvertPixels
#define SDL_ConvertPixels
Definition: SDL_dynapi_overrides.h:465
angle
GLfloat angle
Definition: SDL_opengl_glext.h:6097
SDL_BLENDFACTOR_DST_ALPHA
@ SDL_BLENDFACTOR_DST_ALPHA
Definition: SDL_blendmode.h:85
SDL_FLIP_VERTICAL
@ SDL_FLIP_VERTICAL
Definition: SDL_render.h:115
SDL_GetYUVConversionModeForResolution
#define SDL_GetYUVConversionModeForResolution
Definition: SDL_dynapi_overrides.h:665
SDL_WINDOWEVENT_HIDDEN
@ SDL_WINDOWEVENT_HIDDEN
Definition: SDL_video.h:150
SDL_Renderer::QueueDrawPoints
int(* QueueDrawPoints)(SDL_Renderer *renderer, SDL_RenderCommand *cmd, const SDL_FPoint *points, int count)
Definition: SDL_sysrender.h:132
SDL_BLENDFACTOR_ONE
@ SDL_BLENDFACTOR_ONE
Definition: SDL_blendmode.h:78
matrix
GLuint GLenum matrix
Definition: SDL_opengl_glext.h:9996
SDL_YUV_CONVERSION_BT709
@ SDL_YUV_CONVERSION_BT709
Definition: SDL_surface.h:108
SDL_malloc
#define SDL_malloc
Definition: SDL_dynapi_overrides.h:374
SDL_RENDERER_ACCELERATED
@ SDL_RENDERER_ACCELERATED
Definition: SDL_render.h:67
SDL_shaders_metal_osx.h
SDL_RendererInfo::max_texture_height
int max_texture_height
Definition: SDL_render.h:85
void
const SDL_PRINTF_FORMAT_STRING char int const SDL_PRINTF_FORMAT_STRING char int const SDL_PRINTF_FORMAT_STRING char int const SDL_PRINTF_FORMAT_STRING char const char const SDL_SCANF_FORMAT_STRING char return SDL_ThreadFunction const char void return Uint32 return Uint32 void
Definition: SDL_dynapi_procs.h:89
SDL_PIXELFORMAT_YV12
@ SDL_PIXELFORMAT_YV12
Definition: SDL_pixels.h:277
flags
GLbitfield flags
Definition: SDL_opengl_glext.h:1480
SDL_RENDERCMD_SETDRAWCOLOR
@ SDL_RENDERCMD_SETDRAWCOLOR
Definition: SDL_sysrender.h:77
SDL_Renderer::QueueCopy
int(* QueueCopy)(SDL_Renderer *renderer, SDL_RenderCommand *cmd, SDL_Texture *texture, const SDL_Rect *srcrect, const SDL_FRect *dstrect)
Definition: SDL_sysrender.h:138
SDL_Renderer::window
SDL_Window * window
Definition: SDL_sysrender.h:173
SDL_Renderer::target
SDL_Texture * target
Definition: SDL_sysrender.h:206
texture
GLenum GLenum GLuint texture
Definition: SDL_opengl_glext.h:1178
sdl_metallib_len
const unsigned int sdl_metallib_len
Definition: SDL_shaders_metal_ios.h:1899
rects
EGLSurface EGLint * rects
Definition: eglext.h:282
SDL_PIXELFORMAT_ABGR8888
@ SDL_PIXELFORMAT_ABGR8888
Definition: SDL_pixels.h:254
SDL_GetBlendModeAlphaOperation
SDL_BlendOperation SDL_GetBlendModeAlphaOperation(SDL_BlendMode blendMode)
Definition: SDL_render.c:3377
SDL_BlendMode
SDL_BlendMode
The blend mode used in SDL_RenderCopy() and drawing operations.
Definition: SDL_blendmode.h:40
state
struct xkb_state * state
Definition: SDL_waylandsym.h:113
i
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:50
SDL_GetBlendModeSrcColorFactor
SDL_BlendFactor SDL_GetBlendModeSrcColorFactor(SDL_BlendMode blendMode)
Definition: SDL_render.c:3342
SDL_RENDERCMD_CLEAR
@ SDL_RENDERCMD_CLEAR
Definition: SDL_sysrender.h:78
SDL_YUV_CONVERSION_BT601
@ SDL_YUV_CONVERSION_BT601
Definition: SDL_surface.h:107
SDL_Texture::driverdata
void * driverdata
Definition: SDL_sysrender.h:66
SDL_bool
SDL_bool
Definition: SDL_stdinc.h:161
SDL_Renderer::UnlockTexture
void(* UnlockTexture)(SDL_Renderer *renderer, SDL_Texture *texture)
Definition: SDL_sysrender.h:154
SDL_syswm.h
SDL_Renderer::DestroyTexture
void(* DestroyTexture)(SDL_Renderer *renderer, SDL_Texture *texture)
Definition: SDL_sysrender.h:159
SDL_Renderer::UpdateTextureYUV
int(* UpdateTextureYUV)(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect *rect, const Uint8 *Yplane, int Ypitch, const Uint8 *Uplane, int Upitch, const Uint8 *Vplane, int Vpitch)
Definition: SDL_sysrender.h:147
w
GLubyte GLubyte GLubyte GLubyte w
Definition: SDL_opengl_glext.h:731
Uint8
uint8_t Uint8
Definition: SDL_stdinc.h:179