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Fix rendering glitches with EnableDepthBuffer disabled.

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This commit is contained in:
Paul Chote
2021-08-21 18:06:53 +01:00
committed by abcdefg30
parent 024beacafb
commit 512dee0ac0
1 changed files with 6 additions and 3 deletions
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9
OpenRA.Game/Graphics/SpriteRenderer.cs
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@@ -227,11 +227,14 @@ namespace OpenRA.Graphics
// with a depth range [0, 1] corresponding to the NDC [-1, 1]. We must therefore multiply the
// sprite channel value [0, 1] by 255 to find the pixel depth offset, then by our depth scale
// to find the equivalent NDC offset, then divide by 2 to find the window coordinate offset.
var depth = 2f / (downscale * (sheetSize.Height + depthMargin));
// * If depthMargin == 0 (which indicates per-pixel depth testing is disabled) sprites that
// extend beyond the top of bottom edges of the screen may be pushed outside [-1, 1] and
// culled by the GPU. We avoid this by forcing everything into the z = 0 plane.
var depth = depthMargin != 0f ? 2f / (downscale * (sheetSize.Height + depthMargin)) : 0;
shader.SetVec("DepthTextureScale", 128 * depth);
shader.SetVec("Scroll", scroll.X, scroll.Y, scroll.Y);
shader.SetVec("Scroll", scroll.X, scroll.Y, depthMargin != 0f ? scroll.Y : 0);
shader.SetVec("r1", width, height, -depth);
shader.SetVec("r2", -1, -1, 1);
shader.SetVec("r2", -1, -1, depthMargin != 0f ? 1 : 0);
}
public void SetDepthPreview(bool enabled, float contrast, float offset)