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Improve performance of line rendering.

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- Create an overload that renders a line in one color, as this allows most existing calls to be simplified. This also allows a slight performance improvement by only normalizing the components once.
- Introduce a DrawLineStrip method. This improves performance by allowing the color components to be normalized once for the whole strip, and only needing to calculate vertices once per point rather than twice since we can reuse the last result.
This commit is contained in:
RoosterDragon
2015-05-19 20:50:51 +01:00
parent 9397749118
commit b9ebeaadca
12 changed files with 138 additions and 100 deletions
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37
OpenRA.Mods.Common/Widgets/LineGraphWidget.cs
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@@ -118,21 +118,18 @@ namespace OpenRA.Mods.Common.Widgets
if (points.Any())
{
points = points.Reverse().Take(xAxisSize).Reverse();
var scaledData = points.Select(d => d * scale);
var x = 0;
scaledData.Aggregate((a, b) =>
{
Game.Renderer.LineRenderer.DrawLine(
origin + new float2(x, -a),
origin + new float2(x + xStep, -b),
color, color);
x += xStep;
return b;
});
var lastX = 0;
var lastPoint = 0f;
Game.Renderer.LineRenderer.DrawLineStrip(
points.Select((point, x) =>
{
lastX = x;
lastPoint = point;
return origin + new float2(x * xStep, -point * scale);
}), color);
var value = points.Last();
if (value != 0)
tiny.DrawText(GetValueFormat().F(value), origin + new float2(x, -value * scale - 2), color);
if (lastPoint != 0f)
tiny.DrawText(GetValueFormat().F(lastPoint), origin + new float2(lastX * xStep, -lastPoint * scale - 2), color);
}
tiny.DrawText(key, new float2(rect.Left, rect.Top) + new float2(5, 10 * keyOffset + 3), color);
@@ -142,7 +139,7 @@ namespace OpenRA.Mods.Common.Widgets
// TODO: make this stuff not draw outside of the RenderBounds
for (int n = pointStart, x = 0; n <= pointEnd; n++, x += xStep)
{
Game.Renderer.LineRenderer.DrawLine(origin + new float2(x, 0), origin + new float2(x, -5), Color.White, Color.White);
Game.Renderer.LineRenderer.DrawLine(origin + new float2(x, 0), origin + new float2(x, -5), Color.White);
tiny.DrawText(GetXAxisValueFormat().F(n), origin + new float2(x, 2), Color.White);
}
@@ -151,16 +148,16 @@ namespace OpenRA.Mods.Common.Widgets
for (var y = GetDisplayFirstYAxisValue() ? 0 : yStep; y <= height; y += yStep)
{
var yValue = y / scale;
Game.Renderer.LineRenderer.DrawLine(origin + new float2(width - 5, -y), origin + new float2(width, -y), Color.White, Color.White);
Game.Renderer.LineRenderer.DrawLine(origin + new float2(width - 5, -y), origin + new float2(width, -y), Color.White);
tiny.DrawText(GetYAxisValueFormat().F(yValue), origin + new float2(width + 2, -y), Color.White);
}
bold.DrawText(GetYAxisLabel(), origin + new float2(width + 40, -(height / 2)), Color.White);
Game.Renderer.LineRenderer.DrawLine(origin, origin + new float2(width, 0), Color.White, Color.White);
Game.Renderer.LineRenderer.DrawLine(origin, origin + new float2(0, -height), Color.White, Color.White);
Game.Renderer.LineRenderer.DrawLine(origin + new float2(width, 0), origin + new float2(width, -height), Color.White, Color.White);
Game.Renderer.LineRenderer.DrawLine(origin + new float2(0, -height), origin + new float2(width, -height), Color.White, Color.White);
Game.Renderer.LineRenderer.DrawLine(origin, origin + new float2(width, 0), Color.White);
Game.Renderer.LineRenderer.DrawLine(origin, origin + new float2(0, -height), Color.White);
Game.Renderer.LineRenderer.DrawLine(origin + new float2(width, 0), origin + new float2(width, -height), Color.White);
Game.Renderer.LineRenderer.DrawLine(origin + new float2(0, -height), origin + new float2(width, -height), Color.White);
}
public override Widget Clone()