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metal: improve newTexture performance for non-canvas textures when there's no initial data provided.

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This commit is contained in:
Sasha Szpakowski
2026-07-01 14:20:25 -03:00
parent fc0cb61c6c
commit cad88c0098
1 changed files with 15 additions and 8 deletions
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src/modules/graphics/metal/Texture.mm
+15 -8
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@@ -128,7 +128,6 @@ Texture::Texture(love::graphics::Graphics *gfxbase, id<MTLDevice> device, const
bool shouldgeneratemips = false;
std::vector<uint8> emptydata;
MTLRenderPassDescriptor *passdesc = nil;
// Initialize texture.
@@ -195,11 +194,12 @@ Texture::Texture(love::graphics::Graphics *gfxbase, id<MTLDevice> device, const
else if (getMSAA() <= 1 && !isPixelFormatDepthStencil(format) && !isPixelFormatCompressed(format))
{
// Initialize to transparent black.
if (emptydata.empty())
emptydata.resize(getPixelFormatSliceSize(format, w, h));
size_t datasize = getPixelFormatSliceSize(format, w, h);
Rect r = {0, 0, getPixelWidth(mip), getPixelHeight(mip)};
uploadByteData(emptydata.data(), emptydata.size(), mip, slice, r);
// Special case: memset(0) if data is null.
// TODO: make this a more sensible part of the internal Texture API?
uploadByteData(nullptr, datasize, mip, slice, r);
}
else
{
@@ -264,9 +264,11 @@ Texture::~Texture()
void Texture::uploadByteData(const void *data, size_t size, int level, int slice, const Rect &r)
{ @autoreleasepool {
auto gfx = Graphics::getInstance();
id<MTLBuffer> buffer = [gfx->device newBufferWithBytes:data
length:size
options:MTLResourceStorageModeShared];
id<MTLBuffer> buffer = [gfx->device newBufferWithLength:size options:MTLResourceStorageModeShared];
if (data != nullptr)
memcpy(buffer.contents, data, size);
id<MTLBlitCommandEncoder> encoder = gfx->useBlitEncoder();
@@ -301,6 +303,11 @@ void Texture::uploadByteData(const void *data, size_t size, int level, int slice
// TODO: Verify this is correct for compressed formats at small sizes.
size_t sliceSize = getPixelFormatSliceSize(format, r.w, r.h);
// Special case: memset(0) if data is null.
// TODO: make this a more sensible part of the internal Texture API?
if (data == nullptr)
[encoder fillBuffer:buffer range:NSMakeRange(0, size) value:0];
[encoder copyFromBuffer:buffer
sourceOffset:0
sourceBytesPerRow:rowSize