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Takes a shot at submitting texture changes.

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This commit is contained in:
Thomas Harte 2020-08-09 17:59:52 -04:00
parent e340685a99
commit f16ad8f71d
2 changed files with 56 additions and 9 deletions
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4
OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj
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@ -5169,7 +5169,7 @@
GCC_WARN_UNUSED_FUNCTION = YES;
GCC_WARN_UNUSED_PARAMETER = YES;
GCC_WARN_UNUSED_VARIABLE = YES;
MACOSX_DEPLOYMENT_TARGET = 10.11;
MACOSX_DEPLOYMENT_TARGET = 10.13;
MTL_ENABLE_DEBUG_INFO = INCLUDE_SOURCE;
MTL_FAST_MATH = YES;
ONLY_ACTIVE_ARCH = YES;
@ -5221,7 +5221,7 @@
GCC_WARN_UNUSED_FUNCTION = YES;
GCC_WARN_UNUSED_PARAMETER = YES;
GCC_WARN_UNUSED_VARIABLE = YES;
MACOSX_DEPLOYMENT_TARGET = 10.11;
MACOSX_DEPLOYMENT_TARGET = 10.13;
MTL_ENABLE_DEBUG_INFO = NO;
MTL_FAST_MATH = YES;
SDKROOT = macosx;

61
OSBindings/Mac/Clock Signal/ScanTarget/CSScanTarget.mm
View File

@ -23,6 +23,12 @@ struct Uniforms {
constexpr size_t NumBufferedScans = 2048;
constexpr size_t NumBufferedLines = 2048;
/// The shared resource options this app would most favour; applied as widely as possible.
constexpr MTLResourceOptions SharedResourceOptionsStandard = MTLResourceCPUCacheModeWriteCombined | MTLResourceStorageModeShared;
/// The shared resource options used for the write-area texture; on macOS it can't be MTLResourceStorageModeShared so this is a carve-out.
constexpr MTLResourceOptions SharedResourceOptionsTexture = MTLResourceCPUCacheModeWriteCombined | MTLResourceStorageModeManaged;
#define uniforms() reinterpret_cast<Uniforms *>(_uniformsBuffer.contents)
}
@ -43,6 +49,11 @@ using BufferingScanTarget = Outputs::Display::BufferingScanTarget;
id<MTLBuffer> _linesBuffer;
id<MTLBuffer> _writeAreaBuffer;
// Textures.
id<MTLTexture> _writeAreaTexture;
size_t _bytesPerInputPixel;
size_t _totalTextureBytes;
// The scan target in C++-world terms and the non-GPU storage for it.
BufferingScanTarget _scanTarget;
BufferingScanTarget::LineMetadata _lineMetadataBuffer[NumBufferedLines];
@ -62,13 +73,13 @@ using BufferingScanTarget = Outputs::Display::BufferingScanTarget;
// Allocate buffers for scans and lines and for the write area texture.
_scansBuffer = [view.device
newBufferWithLength:sizeof(Outputs::Display::BufferingScanTarget::Scan)*NumBufferedScans
options:MTLResourceCPUCacheModeWriteCombined | MTLResourceStorageModeShared];
options:SharedResourceOptionsStandard];
_linesBuffer = [view.device
newBufferWithLength:sizeof(Outputs::Display::BufferingScanTarget::Line)*NumBufferedLines
options:MTLResourceCPUCacheModeWriteCombined | MTLResourceStorageModeShared];
options:SharedResourceOptionsStandard];
_writeAreaBuffer = [view.device
newBufferWithLength:BufferingScanTarget::WriteAreaWidth*BufferingScanTarget::WriteAreaHeight*4
options:MTLResourceCPUCacheModeWriteCombined | MTLResourceStorageModeShared];
options:SharedResourceOptionsTexture];
// Install all that storage in the buffering scan target.
_scanTarget.set_write_area(reinterpret_cast<uint8_t *>(_writeAreaBuffer.contents));
@ -115,7 +126,30 @@ using BufferingScanTarget = Outputs::Display::BufferingScanTarget;
uniforms()->scale[1] = newModals->output_scale.y;
uniforms()->lineWidth = 1.0f / newModals->expected_vertical_lines;
// TODO: establish at least a texture. Obey the rest of the modals generally.
// TODO: obey the rest of the modals generally.
// Generate the appropriate input texture.
MTLPixelFormat pixelFormat;
_bytesPerInputPixel = size_for_data_type(newModals->input_data_type);
switch(_bytesPerInputPixel) {
default:
case 1: pixelFormat = MTLPixelFormatR8Unorm; break;
case 2: pixelFormat = MTLPixelFormatRG8Unorm; break;
case 4: pixelFormat = MTLPixelFormatRGBA8Unorm; break;
}
MTLTextureDescriptor *textureDescriptor = [MTLTextureDescriptor
texture2DDescriptorWithPixelFormat:pixelFormat
width:BufferingScanTarget::WriteAreaWidth
height:BufferingScanTarget::WriteAreaHeight
mipmapped:NO];
textureDescriptor.resourceOptions = SharedResourceOptionsTexture;
// TODO: the call below is the only reason why this project now requires macOS 10.13; is it all that helpful versus just uploading each frame?
_writeAreaTexture = [_writeAreaBuffer
newTextureWithDescriptor:textureDescriptor
offset:0
bytesPerRow:BufferingScanTarget::WriteAreaWidth * _bytesPerInputPixel];
_totalTextureBytes = BufferingScanTarget::WriteAreaWidth * BufferingScanTarget::WriteAreaHeight * _bytesPerInputPixel;
}
// Drawing. Just the test triangle, as described above.
@ -125,6 +159,21 @@ using BufferingScanTarget = Outputs::Display::BufferingScanTarget;
[encoder setVertexBuffer:_uniformsBuffer offset:0 atIndex:1];
_scanTarget.perform([=] (const BufferingScanTarget::OutputArea &outputArea) {
// Ensure texture changes are noted.
const auto writeAreaModificationStart = size_t(outputArea.start.write_area_x + outputArea.start.write_area_y) * _bytesPerInputPixel;
const auto writeAreaModificationEnd = size_t(outputArea.end.write_area_x + outputArea.end.write_area_y) * _bytesPerInputPixel;
if(writeAreaModificationStart != writeAreaModificationEnd) {
if(writeAreaModificationStart < writeAreaModificationEnd) {
[_writeAreaBuffer didModifyRange:NSMakeRange(writeAreaModificationStart, writeAreaModificationEnd - writeAreaModificationStart)];
} else {
[_writeAreaBuffer didModifyRange:NSMakeRange(writeAreaModificationStart, _totalTextureBytes - writeAreaModificationStart)];
if(writeAreaModificationEnd) {
[_writeAreaBuffer didModifyRange:NSMakeRange(0, writeAreaModificationEnd)];
}
}
}
// TEMPORARY: just draw the scans.
if(outputArea.start.scan != outputArea.end.scan) {
if(outputArea.start.scan < outputArea.end.scan) {
@ -141,10 +190,8 @@ using BufferingScanTarget = Outputs::Display::BufferingScanTarget;
// Complete encoding.
[encoder endEncoding];
// "Register the drawable's presentation".
// Register the drawable's presentation, finalise and commit.
[commandBuffer presentDrawable:view.currentDrawable];
// Finalise and commit.
[commandBuffer commit];
}