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Font: Fix renderGlyph to render correctly

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Accounts for some changes to the native code called through cffi. We use 32 bit space (24 bit color) to create our image. We had some problems using 8 bit color previously. This might be a breaking change to anyone expecting an 8 bit image buffer, but it wasn't working for several versions anyway and this api is not used for anything within lime to render text as is.
This commit is contained in:
Chris Speciale
2024-10-28 22:58:23 -04:00
committed by GitHub
parent 4673b91c65
commit 85414fce46
1 changed files with 38 additions and 16 deletions
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54
src/lime/text/Font.hx
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@@ -319,29 +319,52 @@ class Font
#if (lime_cffi && !macro)
__setSize(fontSize);
var bytes = Bytes.alloc(0);
// bytes.endian = (System.endianness == BIG_ENDIAN ? "bigEndian" : "littleEndian");
// Allocate an estimated buffer size - adjust if necessary
var bytes:Bytes = Bytes.alloc(0); // Allocate some reasonable initial size
var dataPosition = 0;
// Call native function to render glyph and get byte data
bytes = NativeCFFI.lime_font_render_glyph(src, glyph, bytes);
if (bytes != null && bytes.length > 0)
{
var index = bytes.getInt32(dataPosition);
dataPosition += 4;
var width = bytes.getInt32(dataPosition);
dataPosition += 4;
var height = bytes.getInt32(dataPosition);
dataPosition += 4;
var x = bytes.getInt32(dataPosition);
dataPosition += 4;
var y = bytes.getInt32(dataPosition);
var dataPosition = 0;
// Extract glyph information from the byte array
var index:Int = bytes.getInt32(dataPosition);
dataPosition += 4;
var data = bytes.sub(dataPosition, width * height);
dataPosition += (width * height);
var width:Int = bytes.getInt32(dataPosition);
dataPosition += 4;
var buffer = new ImageBuffer(new UInt8Array(data), width, height, 8);
var height:Int = bytes.getInt32(dataPosition);
dataPosition += 4;
var x:Int = bytes.getInt32(dataPosition);
dataPosition += 4;
var y:Int = bytes.getInt32(dataPosition);
dataPosition += 4;
// Check if width and height are valid before proceeding
if (width <= 0 || height <= 0)
{
return null;
}
// Extract pixel data from the byte array, accounting for 32-bit RGBA data
var pitch = width * 4; // 32-bit color data
// Create a new Bytes array to store the extracted bitmap data without padding
var dataBytes = Bytes.alloc(width * height * 4);
// Extract row by row to handle RGBA data
for (i in 0...height)
{
dataBytes.blit(i * width * 4, bytes, dataPosition + (i * pitch), width * 4);
}
// Create ImageBuffer and Image from the extracted data
var buffer = new ImageBuffer(new UInt8Array(dataBytes), width, height, 32);
var image = new Image(buffer, 0, 0, width, height);
image.x = x;
image.y = y;
@@ -352,7 +375,6 @@ class Font
return null;
}
/**
* Renders a set of glyphs to images.
*