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HUD: reduce GL calls
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@meee1
meee1 committed Aug 21, 2023
1 parent 44c0b2f commit ffa71e5
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Showing 2 changed files with 196 additions and 52 deletions.
124 changes: 74 additions & 50 deletions ExtLibs/Controls/HUD.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -1367,22 +1367,32 @@ public void DrawArc(Pen penn, RectangleF rect, float start, float degrees)
GL.LineWidth(penn.Width);
GL.Color4(penn.Color);

GL.Begin(PrimitiveType.LineStrip);
//GL.Begin(PrimitiveType.LineStrip);

start = 360 - start;
start -= 30;

var vertices = new float[(int)((degrees + 1) * 2)];

float x = 0, y = 0;
int length = 0;
for (float i = start; i <= start + degrees; i++)
{
x = (float) Math.Sin(i * deg2rad) * rect.Width / 2;
y = (float) Math.Cos(i * deg2rad) * rect.Height / 2;
x = x + rect.X + rect.Width / 2;
y = y + rect.Y + rect.Height / 2;
GL.Vertex2(x, y);
vertices[(int)((i - start) * 2)] = x;
vertices[(int)((i - start) * 2 + 1)] = y;
length += 2;
//GL.Vertex2(x, y);
}

GL.End();
//GL.End();
GL.VertexPointer(2, VertexPointerType.Float, 0, vertices);
GL.EnableClientState(ArrayCap.VertexArray);
GL.DrawArrays(PrimitiveType.LineStrip, 0, length/2);
GL.DisableClientState(ArrayCap.VertexArray);
}
else
{
Expand All @@ -1397,18 +1407,29 @@ public void DrawEllipse(Pen penn, Rectangle rect)
GL.LineWidth(penn.Width);
GL.Color4(penn.Color);

GL.Begin(PrimitiveType.LineLoop);
//GL.Begin(PrimitiveType.LineLoop);

var vertices = new float[(int)(360 * 2)];

float x, y;
int length = 0;
for (float i = 0; i < 360; i += 1)
{
x = (float) Math.Sin(i * deg2rad) * rect.Width / 2;
y = (float) Math.Cos(i * deg2rad) * rect.Height / 2;
x = x + rect.X + rect.Width / 2;
y = y + rect.Y + rect.Height / 2;
GL.Vertex2(x, y);
vertices[(int)((i) * 2)] = x;
vertices[(int)((i) * 2 + 1)] = y;
length += 2;
//GL.Vertex2(x, y);
}

GL.End();
//GL.End();
GL.VertexPointer(2, VertexPointerType.Float, 0, vertices);
GL.EnableClientState(ArrayCap.VertexArray);
GL.DrawArrays(PrimitiveType.LineLoop, 0, length / 2);
GL.DisableClientState(ArrayCap.VertexArray);
}
else
{
Expand Down Expand Up @@ -1527,6 +1548,8 @@ public void DrawImage(Image img, int x, int y, int width, int height, int textur

GL.Disable(EnableCap.Texture2D);

GL.BindTexture(TextureTarget.Texture2D, 0);

if (polySmoothEnabled)
GL.Enable(EnableCap.PolygonSmooth);
}
Expand Down Expand Up @@ -1846,7 +1869,7 @@ public void DrawRectangle(Pen penn, RectangleF rect)
DrawRectangle(penn, rect.X, rect.Y, rect.Width, rect.Height);
}

public void DrawRectangle(Pen penn, double x1, double y1, double width, double height)
public void DrawRectangle(Pen penn, float x1, float y1, float width, float height)
{

if (opengl)
Expand All @@ -1866,23 +1889,28 @@ public void DrawRectangle(Pen penn, double x1, double y1, double width, double h
graphicsObjectGDIP.DrawRectangle(penn, (float) x1, (float) y1, (float) width, (float) height);
}
}

public void DrawLine(Pen penn, double x1, double y1, double x2, double y2)
public void DrawLine(Pen penn, float x1, float y1, float x2, float y2)
{

if (opengl)
{
GL.Color4(penn.Color);
GL.LineWidth(penn.Width);

GL.Begin(PrimitiveType.Lines);
GL.Vertex2(x1, y1);
GL.Vertex2(x2, y2);
GL.End();
//GL.Begin(PrimitiveType.Lines);
//GL.Vertex2(x1, y1);
//GL.Vertex2(x2, y2);
//GL.End();

GL.VertexPointer(2, VertexPointerType.Float, 0, new float[] { x1, y1, x2, y2 });
GL.EnableClientState(ArrayCap.VertexArray);
GL.DrawArrays(PrimitiveType.Lines, 0, 2);
GL.DisableClientState(ArrayCap.VertexArray);
}
else
{
graphicsObjectGDIP.DrawLine(penn, (float) x1, (float) y1, (float) x2, (float) y2);
graphicsObjectGDIP.DrawLine(penn, (float)x1, (float)y1, (float)x2, (float)y2);
}
}

Expand Down Expand Up @@ -3366,6 +3394,8 @@ int NextPowerOf2(int n)
return n;
}

readonly float[] texCoords = { 0.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f };

void drawstring(string text, Font font, float fontsize, SolidBrush brush, float x, float y)
{
if (!opengl)
Expand All @@ -3384,13 +3414,23 @@ void drawstring(string text, Font font, float fontsize, SolidBrush brush, float
GL.PopMatrix(); printer.End();
*/


GL.Enable(EnableCap.Texture2D);
GL.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.OneMinusSrcAlpha);
GL.Color4(1f, 1, 1, 1);

GL.TexCoordPointer(2, TexCoordPointerType.Float, 0, texCoords);
GL.EnableClientState(ArrayCap.TextureCoordArray);

GL.EnableClientState(ArrayCap.VertexArray);

float maxy = 1;

foreach (char cha in text)
{
int charno = (int) cha;
int charno = (int)cha;

int charid = charno ^ (int) (fontsize * 1000) ^ brush.Color.ToArgb();
int charid = charno ^ (int)(fontsize * 1000) ^ brush.Color.ToArgb();

if (!charDict.ContainsKey(charid))
{
Expand All @@ -3401,7 +3441,7 @@ void drawstring(string text, Font font, float fontsize, SolidBrush brush, float
var pth = new GraphicsPath();

if (text != null)
pth.AddString(cha + "", font.FontFamily, 0, fontsize + 5, new Point((int) 0, (int) 0),
pth.AddString(cha + "", font.FontFamily, 0, fontsize + 5, new Point((int)0, (int)0),
StringFormat.GenericTypographic);

if (pth.PointCount > 0)
Expand All @@ -3416,13 +3456,13 @@ void drawstring(string text, Font font, float fontsize, SolidBrush brush, float
}
}

var larger = maxx > maxy ? (int) maxx + 1 : (int) maxy + 1;
var larger = maxx > maxy ? (int)maxx + 1 : (int)maxy + 1;

charDict[charid] = new character()
{
bitmap = new Bitmap(NextPowerOf2(larger), NextPowerOf2(larger),
System.Drawing.Imaging.PixelFormat.Format32bppArgb),
size = (int) fontsize,
size = (int)fontsize,
pth = pth
};

Expand All @@ -3440,7 +3480,7 @@ void drawstring(string text, Font font, float fontsize, SolidBrush brush, float
gfx.FillPath(brush, pth);
}

charDict[charid].width = (int) (maxx + 2);
charDict[charid].width = (int)(maxx + 2);

//charbitmaps[charid] = charbitmaps[charid].Clone(new RectangleF(0, 0, maxx + 2, maxy + 2), charbitmaps[charid].PixelFormat);

Expand All @@ -3449,7 +3489,7 @@ void drawstring(string text, Font font, float fontsize, SolidBrush brush, float
// create texture
int textureId;
GL.TexEnv(TextureEnvTarget.TextureEnv, TextureEnvParameter.TextureEnvMode,
(float) TextureEnvModeCombine.Replace); //Important, or wrong color on some computers
(float)TextureEnvModeCombine.Replace); //Important, or wrong color on some computers

Bitmap bitmap = charDict[charid].bitmap;
GL.GenTextures(1, out textureId);
Expand All @@ -3462,9 +3502,9 @@ void drawstring(string text, Font font, float fontsize, SolidBrush brush, float
OpenTK.Graphics.OpenGL.PixelFormat.Bgra, PixelType.UnsignedByte, data.Scan0);

GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter,
(int) TextureMinFilter.Linear);
(int)TextureMinFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter,
(int) TextureMagFilter.Linear);
(int)TextureMagFilter.Linear);

// GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)All.Nearest);
//GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)All.Nearest);
Expand All @@ -3482,39 +3522,23 @@ void drawstring(string text, Font font, float fontsize, SolidBrush brush, float
// dont draw spaces
if (cha != ' ')
{
/*
TranslateTransform(x, y);
DrawPath(this._p, charDict[charid].pth);
//Draw the face
float[] vertices = {
x, y+ charDict[charid].bitmap.Height * scale ,
x + charDict[charid].bitmap.Width * scale, y+ charDict[charid].bitmap.Height * scale,
x + charDict[charid].bitmap.Width * scale, y,
x, y };

FillPath(brush, charDict[charid].pth);
TranslateTransform(-x, -y);
*/
//GL.Enable(EnableCap.Blend);
GL.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.OneMinusSrcAlpha);

GL.Enable(EnableCap.Texture2D);
GL.BindTexture(TextureTarget.Texture2D, charDict[charid].gltextureid);

GL.Begin(PrimitiveType.TriangleFan);
GL.TexCoord2(0, 0);
GL.Vertex2(x, y);
GL.TexCoord2(1, 0);
GL.Vertex2(x + charDict[charid].bitmap.Width * scale, y);
GL.TexCoord2(1, 1);
GL.Vertex2(x + charDict[charid].bitmap.Width * scale, y + charDict[charid].bitmap.Height * scale);
GL.TexCoord2(0, 1);
GL.Vertex2(x + 0, y + charDict[charid].bitmap.Height * scale);
GL.End();

//GL.Disable(EnableCap.Blend);
GL.Disable(EnableCap.Texture2D);
GL.VertexPointer(2, VertexPointerType.Float, 0, vertices);
GL.DrawArrays(PrimitiveType.Quads, 0, 4);
}

x += charDict[charid].width * scale;
}
GL.DisableClientState(ArrayCap.TextureCoordArray);
GL.DisableClientState(ArrayCap.VertexArray);
GL.Disable(EnableCap.Texture2D);
GL.BindTexture(TextureTarget.Texture2D, 0);
}

void drawstringGDI(string text, Font font, float fontsize, SolidBrush brush, float x, float y)
Expand Down
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