Weird shadow map with texture

nelbok

Hello,

I was a problem with the shadow mapping, I think.
Here three screenshots:

As you can see, the shadow is correct when the Materials are full textured or aren't.
The problem occurs when I have one Material with a Texture and the other without Texture.

Here the sample code:

import QtQuick
import QtQuick3D
import QtQuick3D.Helpers

import test 1.0

Window {
    width: 720
    height: 480
    visible: true
    title: qsTr("Hello World")

    View3D {
        id: root
        anchors.fill: parent

        environment: SceneEnvironment {
            clearColor: "skyblue"
            backgroundMode: SceneEnvironment.Color
        }

        // A light like the sun
        DirectionalLight {
            eulerRotation.x: -30
            eulerRotation.y: -70
            castsShadow: true
            shadowMapQuality: Light.ShadowMapQualityVeryHigh
        }

        // Camera with its controller to make it easy to move around the scene
        PerspectiveCamera {
            id: camera
            position: Qt.vector3d(0, 800, 1000)
            eulerRotation.x: -30
        }
        WasdController {
            controlledObject: camera
        }

        Model {
            source: "#Cube"
            materials: [
                DefaultMaterial {
                    diffuseColor: Qt.rgba(0.0, 0.8, 0.0, 1.0)
                }
            ]
            scale: Qt.vector3d(10, 1, 10);
            position: Qt.vector3d(0, -100, 0);
        }


        Model {
            geometry: TestCube {
            }
            materials: [
                DefaultMaterial {
                    diffuseColor: Qt.rgba(0.8, 0.0, 0.0, 1.0)
                    diffuseMap: Texture {
                        source: "qrc:/logo/logo.png"
                    }
                },
                DefaultMaterial {
                    diffuseColor: Qt.rgba(0.8, 0.8, 0.8, 1.0)
                    // diffuseMap: Texture {
                    //     source: "qrc:/logo/logo.png"
                    // }
                }
            ]
            scale: Qt.vector3d(100, 100, 100);
            position: Qt.vector3d(-100, 0, 0);
            eulerRotation.y: -45
        }
    }
}

#include "testcube.h"

#include <QVector3D>

TestCube::TestCube()
{
    updateData();
}

void TestCube::updateData()
{
    QByteArray v;
    v.resize(2 * 4 * 5 * sizeof(float));
    float *p = reinterpret_cast<float *>(v.data());

    // a triangle, front face = counter-clockwise
    *p++ = 0.0f; *p++ = 0.0f; *p++ = 0.0f; *p++ = 0.0f; *p++ = 0.0f;
    *p++ = 0.0f; *p++ = 1.0f; *p++ = 0.0f; *p++ = 0.0f; *p++ = 1.0f;
    *p++ = 1.0f; *p++ = 0.0f; *p++ = 0.0f; *p++ = 1.0f; *p++ = 0.0f;
    *p++ = 1.0f; *p++ = 1.0f; *p++ = 0.0f; *p++ = 1.0f; *p++ = 1.0f;

    *p++ = 11.0f; *p++ = 0.0f; *p++ = 0.0f; *p++ = 0.0f; *p++ = 0.0f;
    *p++ = 11.0f; *p++ = 1.0f; *p++ = 0.0f; *p++ = 0.0f; *p++ = 1.0f;
    *p++ = 12.0f; *p++ = 0.0f; *p++ = 0.0f; *p++ = 1.0f; *p++ = 0.0f;
    *p++ = 12.0f; *p++ = 1.0f; *p++ = 0.0f; *p++ = 1.0f; *p++ = 1.0f;

    QByteArray i;
    i.resize(4 * 3 * sizeof(unsigned));
    unsigned *j = reinterpret_cast<unsigned *>(i.data());

    // a triangle, front face = counter-clockwise
    *j++ = 0; *j++ = 2; *j++ = 1;
    *j++ = 4; *j++ = 6; *j++ = 5;
    *j++ = 1; *j++ = 2; *j++ = 3;
    *j++ = 5; *j++ = 6; *j++ = 7;

    addSubset(0, 6, {-1.0f, -1.0f,-1.0f}, {1.0f, 1.0f, 1.0f});
    addSubset(6, 6, {-1.0f, -1.0f,-1.0f}, {1.0f, 1.0f, 1.0f});

    setVertexData(v);
    setIndexData(i);
    setStride(5 * sizeof(float));

    setBounds({-1.0f, -1.0f,-1.0f}, {1.0f, 1.0f, 1.0f});

    setPrimitiveType(QQuick3DGeometry::PrimitiveType::Triangles);
    addAttribute(QQuick3DGeometry::Attribute::PositionSemantic, 0, QQuick3DGeometry::Attribute::F32Type);
    addAttribute(QQuick3DGeometry::Attribute::TexCoordSemantic, 3 * sizeof(float), QQuick3DGeometry::Attribute::F32Type);
    addAttribute(QQuick3DGeometry::Attribute::IndexSemantic, 0, QQuick3DGeometry::Attribute::U32Type);
}

My suspicions are around the setBouns, but I am not sure...
I will try with a blank texture when there is no texture for the Material.

Thank you if you can pinpoint my error.

Jonas Karlsson

If you are trying to create a cube then it looks like your cube data is wrong as you can see from this picture: