mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-09-11 18:28:50 +02:00
* Fix typos * Remove unneeded using statements * Enforce var style more * Remove redundant qualifiers * Fix some indentation * Disable naming warnings on files with external enum names * Fix build * Mass find & replace for comments with no spacing * Standardize todo capitalization and for/if spacing
257 lines
No EOL
8.9 KiB
C#
257 lines
No EOL
8.9 KiB
C#
using System;
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using System.IO;
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using System.Runtime.InteropServices;
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using OpenTK;
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using OpenTK.Graphics.OpenGL;
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using SharpFont;
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namespace Ryujinx.Profiler.UI.SharpFontHelpers
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{
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public class FontService
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{
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private struct CharacterInfo
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{
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public float Left;
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public float Right;
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public float Top;
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public float Bottom;
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public int Width;
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public float Height;
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public float AspectRatio;
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public float BearingX;
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public float BearingY;
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public float Advance;
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}
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private const int SheetWidth = 1024;
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private const int SheetHeight = 512;
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private int ScreenWidth, ScreenHeight;
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private int CharacterTextureSheet;
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private CharacterInfo[] characters;
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public Color fontColor { get; set; } = Color.Black;
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private string GetFontPath()
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{
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string fontFolder = Environment.GetFolderPath(Environment.SpecialFolder.Fonts);
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// Only uses Arial, add more fonts here if wanted
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string path = Path.Combine(fontFolder, "arial.ttf");
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if (File.Exists(path))
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{
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return path;
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}
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throw new Exception($"Profiler exception. Required font Courier New or Arial not installed to {fontFolder}");
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}
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public void InitializeTextures()
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{
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// Create and init some vars
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uint[] rawCharacterSheet = new uint[SheetWidth * SheetHeight];
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int x;
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int y;
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int lineOffset;
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int maxHeight;
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x = y = lineOffset = maxHeight = 0;
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characters = new CharacterInfo[94];
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// Get font
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var font = new FontFace(File.OpenRead(GetFontPath()));
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// Update raw data for each character
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for (int i = 0; i < 94; i++)
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{
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var surface = RenderSurface((char)(i + 33), font, out float xBearing, out float yBearing, out float advance);
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characters[i] = UpdateTexture(surface, ref rawCharacterSheet, ref x, ref y, ref lineOffset);
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characters[i].BearingX = xBearing;
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characters[i].BearingY = yBearing;
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characters[i].Advance = advance;
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if (maxHeight < characters[i].Height)
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maxHeight = (int)characters[i].Height;
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}
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// Fix height for characters shorter than line height
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for (int i = 0; i < 94; i++)
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{
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characters[i].BearingX /= characters[i].Width;
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characters[i].BearingY /= maxHeight;
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characters[i].Advance /= characters[i].Width;
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characters[i].Height /= maxHeight;
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characters[i].AspectRatio = (float)characters[i].Width / maxHeight;
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}
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// Convert raw data into texture
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CharacterTextureSheet = GL.GenTexture();
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GL.BindTexture(TextureTarget.Texture2D, CharacterTextureSheet);
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GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);
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GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
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GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)TextureWrapMode.Clamp);
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GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)TextureWrapMode.Clamp);
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GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, SheetWidth, SheetHeight, 0, PixelFormat.Rgba, PixelType.UnsignedInt8888, rawCharacterSheet);
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GL.BindTexture(TextureTarget.Texture2D, 0);
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}
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public void UpdateScreenHeight(int height)
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{
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ScreenHeight = height;
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}
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public float DrawText(string text, float x, float y, float height, bool draw = true)
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{
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float originalX = x;
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// Skip out of bounds draw
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if (y < height * -2 || y > ScreenHeight + height * 2)
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{
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draw = false;
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}
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if (draw)
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{
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// Use font map texture
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GL.BindTexture(TextureTarget.Texture2D, CharacterTextureSheet);
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// Enable blending and textures
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GL.Enable(EnableCap.Texture2D);
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GL.Enable(EnableCap.Blend);
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GL.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.OneMinusSrcAlpha);
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// Draw all characters
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GL.Begin(PrimitiveType.Triangles);
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GL.Color4(fontColor);
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}
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for (int i = 0; i < text.Length; i++)
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{
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if (text[i] == ' ')
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{
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x += height / 4;
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continue;
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}
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CharacterInfo charInfo = characters[text[i] - 33];
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float width = (charInfo.AspectRatio * height);
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x += (charInfo.BearingX * charInfo.AspectRatio) * width;
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float right = x + width;
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if (draw)
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{
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DrawChar(charInfo, x, right, y + height * (charInfo.Height - charInfo.BearingY), y - height * charInfo.BearingY);
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}
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x = right + charInfo.Advance * charInfo.AspectRatio + 1;
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}
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if (draw)
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{
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GL.End();
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// Cleanup for caller
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GL.BindTexture(TextureTarget.Texture2D, 0);
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GL.Disable(EnableCap.Texture2D);
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GL.Disable(EnableCap.Blend);
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}
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// Return width of rendered text
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return x - originalX;
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}
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private void DrawChar(CharacterInfo charInfo, float left, float right, float top, float bottom)
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{
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GL.TexCoord2(charInfo.Left, charInfo.Bottom); GL.Vertex2(left, bottom);
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GL.TexCoord2(charInfo.Left, charInfo.Top); GL.Vertex2(left, top);
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GL.TexCoord2(charInfo.Right, charInfo.Top); GL.Vertex2(right, top);
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GL.TexCoord2(charInfo.Right, charInfo.Top); GL.Vertex2(right, top);
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GL.TexCoord2(charInfo.Right, charInfo.Bottom); GL.Vertex2(right, bottom);
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GL.TexCoord2(charInfo.Left, charInfo.Bottom); GL.Vertex2(left, bottom);
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}
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public unsafe Surface RenderSurface(char c, FontFace font, out float xBearing, out float yBearing, out float advance)
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{
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var glyph = font.GetGlyph(c, 64);
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xBearing = glyph.HorizontalMetrics.Bearing.X;
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yBearing = glyph.RenderHeight - glyph.HorizontalMetrics.Bearing.Y;
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advance = glyph.HorizontalMetrics.Advance;
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var surface = new Surface
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{
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Bits = Marshal.AllocHGlobal(glyph.RenderWidth * glyph.RenderHeight),
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Width = glyph.RenderWidth,
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Height = glyph.RenderHeight,
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Pitch = glyph.RenderWidth
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};
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var stuff = (byte*)surface.Bits;
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for (int i = 0; i < surface.Width * surface.Height; i++)
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*stuff++ = 0;
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glyph.RenderTo(surface);
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return surface;
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}
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private CharacterInfo UpdateTexture(Surface surface, ref uint[] rawCharMap, ref int posX, ref int posY, ref int lineOffset)
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{
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int width = surface.Width;
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int height = surface.Height;
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int len = width * height;
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byte[] data = new byte[len];
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// Get character bitmap
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Marshal.Copy(surface.Bits, data, 0, len);
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// Find a slot
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if (posX + width > SheetWidth)
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{
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posX = 0;
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posY += lineOffset;
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lineOffset = 0;
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}
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// Update lineOffset
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if (lineOffset < height)
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{
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lineOffset = height + 1;
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}
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// Copy char to sheet
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for (int y = 0; y < height; y++)
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{
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int destOffset = (y + posY) * SheetWidth + posX;
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int sourceOffset = y * width;
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for (int x = 0; x < width; x++)
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{
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rawCharMap[destOffset + x] = (uint)((0xFFFFFF << 8) | data[sourceOffset + x]);
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}
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}
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// Generate character info
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CharacterInfo charInfo = new CharacterInfo()
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{
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Left = (float)posX / SheetWidth,
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Right = (float)(posX + width) / SheetWidth,
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Top = (float)(posY - 1) / SheetHeight,
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Bottom = (float)(posY + height) / SheetHeight,
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Width = width,
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Height = height,
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};
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// Update x
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posX += width + 1;
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// Give the memory back
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Marshal.FreeHGlobal(surface.Bits);
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return charInfo;
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}
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}
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} |