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Ignore terrain slopes when calculating model shadows.

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This is less realistic, but better matches the original
game and is the only practical way to reduce visual issues
caused by long shadows being cast over multiple cells.
This commit is contained in:
Paul Chote
2021-07-27 14:09:48 +01:00
committed by reaperrr
parent 68710e48a6
commit dcd3e8d444
3 changed files with 8 additions and 9 deletions
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8
OpenRA.Game/Graphics/ModelRenderer.cs
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@@ -42,6 +42,7 @@ namespace OpenRA.Graphics
static readonly float[] ZVector = new float[] { 0, 0, 1, 1 };
static readonly float[] FlipMtx = Util.ScaleMatrix(1, -1, 1);
static readonly float[] ShadowScaleFlipMtx = Util.ScaleMatrix(2, -2, 2);
static readonly float[] GroundNormal = { 0, 0, 1, 1 };
readonly Renderer renderer;
readonly IShader shader;
@@ -80,7 +81,7 @@ namespace OpenRA.Graphics
public ModelRenderProxy RenderAsync(
WorldRenderer wr, IEnumerable<ModelAnimation> models, in WRot camera, float scale,
float[] groundNormal, in WRot lightSource, float[] lightAmbientColor, float[] lightDiffuseColor,
in WRot groundOrientation, in WRot lightSource, float[] lightAmbientColor, float[] lightDiffuseColor,
PaletteReference color, PaletteReference normals, PaletteReference shadowPalette)
{
if (!isInFrame)
@@ -92,7 +93,10 @@ namespace OpenRA.Graphics
// Correct for bogus light source definition
var lightYaw = Util.MakeFloatMatrix(new WRot(WAngle.Zero, WAngle.Zero, -lightSource.Yaw).AsMatrix());
var lightPitch = Util.MakeFloatMatrix(new WRot(WAngle.Zero, -lightSource.Pitch, WAngle.Zero).AsMatrix());
var shadowTransform = Util.MatrixMultiply(lightPitch, lightYaw);
var ground = Util.MakeFloatMatrix(groundOrientation.AsMatrix());
var shadowTransform = Util.MatrixMultiply(Util.MatrixMultiply(lightPitch, lightYaw), Util.MatrixInverse(ground));
var groundNormal = Util.MatrixVectorMultiply(ground, GroundNormal);
var invShadowTransform = Util.MatrixInverse(shadowTransform);
var cameraTransform = Util.MakeFloatMatrix(camera.AsMatrix());