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cramer for inverse

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added #if block around inverse methods to track down shadow bug

uses old inverse method as default for now.
This commit is contained in:
marauder2k7 2024-07-31 17:32:00 +01:00
parent 4078f3ad4e
commit ab4b4cbf96
2 changed files with 349 additions and 69 deletions
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67
Engine/source/testing/mathMatrixTest.cpp
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@ -801,6 +801,73 @@ TEST(MatrixTest, TestMatrixAdd)
}
TEST(MatrixTest, TestCalcPlaneCulls)
{
Point3F lightDir(-0.346188605f, -0.742403805f, -0.573576510f);
const F32 shadowDistance = 100.0f;
// frustum transform
MatrixF test(true);
test(0, 0) = -0.8930f; test(0, 1) = 0.3043f; test(0, 2) = 0.3314f; test(0, 3) = -8.3111f;
test(1, 0) = -0.4499f; test(1, 1) = -0.6039f; test(1, 2) = -0.6578f; test(1, 3) = 8.4487f;
test(2, 0) = -0.0f; test(2, 1) = -0.7366f; test(2, 2) = 0.6763f; test(2, 3) = 12.5414f;
test(0, 0) = 0.00f; test(0, 1) = 0.0f; test(0, 2) = 0.0f; test(0, 3) = 1.0f;
Box3F viewBB(-shadowDistance, -shadowDistance, -shadowDistance,
shadowDistance, shadowDistance, shadowDistance);
Frustum testFrustum(false, -0.119894862f, 0.119894862f, 0.0767327100f, -0.0767327100f, 0.1f, 1000.0f, test);
testFrustum.getTransform().mul(viewBB);
testFrustum.cropNearFar(0.1f, shadowDistance);
PlaneF lightFarPlane, lightNearPlane;
Point3F viewDir = testFrustum.getTransform().getForwardVector();
EXPECT_NEAR(viewDir.x, 0.0f, 0.001f); EXPECT_NEAR(viewDir.y, -0.6039f, 0.001f); EXPECT_NEAR(viewDir.z, -0.7365f, 0.001f);
viewDir.normalize();
const Point3F viewPosition = testFrustum.getPosition();
EXPECT_NEAR(viewPosition.x, 1.0f, 0.001f); EXPECT_NEAR(viewPosition.y, 8.4486f, 0.001f); EXPECT_NEAR(viewPosition.z, 12.5414f, 0.001f);
const F32 viewDistance = testFrustum.getBounds().len();
EXPECT_NEAR(viewDistance, 243.6571f, 0.001f);
lightNearPlane = PlaneF(viewPosition + (viewDistance * -lightDir), lightDir);
const Point3F lightFarPlanePos = viewPosition + (viewDistance * lightDir);
lightFarPlane = PlaneF(lightFarPlanePos, -lightDir);
MatrixF invLightFarPlaneMat(true);
MatrixF lightFarPlaneMat = MathUtils::createOrientFromDir(-lightDir);
lightFarPlaneMat.setPosition(lightFarPlanePos);
lightFarPlaneMat.invertTo(&invLightFarPlaneMat);
Vector<Point2F> projVertices;
//project all frustum vertices into plane
// all vertices are 2d and local to far plane
projVertices.setSize(8);
for (int i = 0; i < 8; ++i) //
{
const Point3F& point = testFrustum.getPoints()[i];
Point3F localPoint(lightFarPlane.project(point));
invLightFarPlaneMat.mulP(localPoint);
projVertices[i] = Point2F(localPoint.x, localPoint.z);
}
EXPECT_NEAR(projVertices[0].x, 0.0240f, 0.001f); EXPECT_NEAR(projVertices[0].y, 0.0117f, 0.001f);
EXPECT_NEAR(projVertices[1].x, 0.0696f, 0.001f); EXPECT_NEAR(projVertices[1].y, 0.0678f, 0.001f);
EXPECT_NEAR(projVertices[2].x, -0.0186f, 0.001f); EXPECT_NEAR(projVertices[2].y, -0.1257f, 0.001f);
EXPECT_NEAR(projVertices[3].x, 0.0269f, 0.001f); EXPECT_NEAR(projVertices[3].y, -0.0696f, 0.001f);
EXPECT_NEAR(projVertices[4].x, 24.0571f, 0.001f); EXPECT_NEAR(projVertices[4].y, 11.7618f, 0.001f);
EXPECT_NEAR(projVertices[5].x, 69.6498f, 0.001f); EXPECT_NEAR(projVertices[5].y, 67.8426f, 0.001f);
EXPECT_NEAR(projVertices[6].x, -18.6059f, 0.001f); EXPECT_NEAR(projVertices[6].y, -125.7341f, 0.001f);
EXPECT_NEAR(projVertices[7].x, 26.9866f, 0.001f); EXPECT_NEAR(projVertices[7].y, -69.6534f, 0.001f);
}
TEST(MatrixTest, TestFrustumProjectionMatrix)
{
MatrixF test(true);