void Model::loadObj(QFile &file)
{
// 1e9 = 1*10^9 = 1,000,000,000
QVector3D boundsMin( 1e9, 1e9, 1e9);
QVector3D boundsMax(-1e9,-1e9,-1e9);
QTextStream in(&file);
while (!in.atEnd()) {
QString input = in.readLine();
// # means comment
if (input.isEmpty() || input[0] == '#')
continue;
QTextStream ts(&input);
QString id;
ts >> id;
//--------------- v = List of vertices with (x,y,z[,w]) corrdinates. -----------------
if (id == "v") {
QVector3D p;
for (int i = 0; i < 3; ++i) {
ts >> p[i];
boundsMin[i] = qMin(boundsMin[i], p[i]);
boundsMax[i] = qMax(boundsMax[i], p[i]);
}
m_vertices << p;
//--------------- f = Face definitions -----------------
} else if (id == "f" || id == "fo") {
Model::Model(const QString &filePath)
: m_fileName(QFileInfo(filePath).fileName())
{
QFile file(filePath);
if (!file.open(QIODevice::ReadOnly))
return;
QVector3D boundsMin( 1e9, 1e9, 1e9);
QVector3D boundsMax(-1e9,-1e9,-1e9);
QTextStream in(&file);
while (!in.atEnd()) {
QString input = in.readLine();
if (input.isEmpty() || input[0] == '#')
continue;
QTextStream ts(&input);
QString id;
ts >> id;
if (id == "v") {
QVector3D p;
for (int i = 0; i < 3; ++i) {
ts >> ((float *)&p)[i];
((float *)&boundsMin)[i] = qMin(((float *)&boundsMin)[i], ((float *)&p)[i]);
((float *)&boundsMax)[i] = qMax(((float *)&boundsMax)[i], ((float *)&p)[i]);
}
m_points << p;
} else if (id == "f" || id == "fo") {
/*
================
R_SurfaceToTextureAxis
Calculates two axis for the surface such that a point dotted against
the axis will give a 0.0 to 1.0 range in S and T when inside the gui surface
================
*/
void R_SurfaceToTextureAxis( const srfTriangles_t* tri, idVec3& origin, idVec3 axis[3] )
{
// find the bounds of the texture
idVec2 boundsMin( 999999.0f, 999999.0f );
idVec2 boundsMax( -999999.0f, -999999.0f );
for( int i = 0 ; i < tri->numVerts ; i++ )
{
const idVec2 uv = tri->verts[i].GetTexCoord();
boundsMin.x = Min( uv.x, boundsMin.x );
boundsMax.x = Max( uv.x, boundsMax.x );
boundsMin.y = Min( uv.y, boundsMin.y );
boundsMax.y = Max( uv.y, boundsMax.y );
}
// use the floor of the midpoint as the origin of the
// surface, which will prevent a slight misalignment
// from throwing it an entire cycle off
const idVec2 boundsOrg( floor( ( boundsMin.x + boundsMax.x ) * 0.5f ), floor( ( boundsMin.y + boundsMax.y ) * 0.5f ) );
// determine the world S and T vectors from the first drawSurf triangle
// RB: added check wether GPU skinning is available at all
const idJointMat* joints = ( tri->staticModelWithJoints != NULL && r_useGPUSkinning.GetBool() && glConfig.gpuSkinningAvailable ) ? tri->staticModelWithJoints->jointsInverted : NULL;
// RB end
const idVec3 aXYZ = idDrawVert::GetSkinnedDrawVertPosition( tri->verts[ tri->indexes[0] ], joints );
const idVec3 bXYZ = idDrawVert::GetSkinnedDrawVertPosition( tri->verts[ tri->indexes[1] ], joints );
const idVec3 cXYZ = idDrawVert::GetSkinnedDrawVertPosition( tri->verts[ tri->indexes[2] ], joints );
const idVec2 aST = tri->verts[ tri->indexes[0] ].GetTexCoord();
const idVec2 bST = tri->verts[ tri->indexes[1] ].GetTexCoord();
const idVec2 cST = tri->verts[ tri->indexes[2] ].GetTexCoord();
float d0[5];
d0[0] = bXYZ[0] - aXYZ[0];
d0[1] = bXYZ[1] - aXYZ[1];
d0[2] = bXYZ[2] - aXYZ[2];
d0[3] = bST.x - aST.x;
d0[4] = bST.y - aST.y;
float d1[5];
d1[0] = cXYZ[0] - aXYZ[0];
d1[1] = cXYZ[1] - aXYZ[1];
d1[2] = cXYZ[2] - aXYZ[2];
d1[3] = cST.x - aST.x;
d1[4] = cST.y - aST.y;
const float area = d0[3] * d1[4] - d0[4] * d1[3];
if( area == 0.0f )
{
axis[0].Zero();
axis[1].Zero();
axis[2].Zero();
return; // degenerate
}
const float inva = 1.0f / area;
axis[0][0] = ( d0[0] * d1[4] - d0[4] * d1[0] ) * inva;
axis[0][1] = ( d0[1] * d1[4] - d0[4] * d1[1] ) * inva;
axis[0][2] = ( d0[2] * d1[4] - d0[4] * d1[2] ) * inva;
axis[1][0] = ( d0[3] * d1[0] - d0[0] * d1[3] ) * inva;
axis[1][1] = ( d0[3] * d1[1] - d0[1] * d1[3] ) * inva;
axis[1][2] = ( d0[3] * d1[2] - d0[2] * d1[3] ) * inva;
idPlane plane;
plane.FromPoints( aXYZ, bXYZ, cXYZ );
axis[2][0] = plane[0];
axis[2][1] = plane[1];
axis[2][2] = plane[2];
// take point 0 and project the vectors to the texture origin
VectorMA( aXYZ, boundsOrg.x - aST.x, axis[0], origin );
VectorMA( origin, boundsOrg.y - aST.y, axis[1], origin );
}
void LightList::QueueDraw(Renderer& rRenderer, const Sky& rSky, const Camera& rCamera, const float sceneDepthMin, const float sceneDepthMax,
RdrLightingMethod lightingMethod, RdrLightResources* pOutResources)
{
Camera lightCamera;
int curShadowMapIndex = 0;
int curShadowCubeMapIndex = 0;
int shadowMapsThisFrame = 0;
// Update shadow casting lights and the global light constants
// todo: Choose shadow lights based on location and dynamic object movement
GlobalLightData* pGlobalLights = (GlobalLightData*)RdrFrameMem::AllocAligned(sizeof(GlobalLightData), 16);
// Temporarily add sky light to the light list.
m_directionalLights.push(rSky.GetSunLight());
for (uint i = 0, count = m_directionalLights.size(); i < count; ++i)
{
DirectionalLight& rDirLight = m_directionalLights[i];
int remainingShadowMaps = MAX_SHADOW_MAPS - curShadowMapIndex - 1;
const int kNumCascades = 4;
if (remainingShadowMaps >= kNumCascades)
{
// Directional lights always change because they're based on camera position/rotation
rDirLight.shadowMapIndex = curShadowMapIndex;
Rect viewport(0.f, 0.f, (float)s_shadowMapSize, (float)s_shadowMapSize);
float zMin = sceneDepthMin;
float zMax = sceneDepthMax;
float zDiff = (zMax - zMin);
float nearDepth = zMin;
float lamda = rSky.GetPssmLambda();
for (int iPartition = 0; iPartition < kNumCascades; ++iPartition)
{
float zUni = zMin + (zDiff / kNumCascades) * (iPartition + 1);
float zLog = zMin * powf(zMax / zMin, (iPartition + 1) / (float)kNumCascades);
float farDepth = lamda * zLog + (1.f - lamda) * zUni;
Vec3 center = rCamera.GetPosition() + rCamera.GetDirection() * ((farDepth + nearDepth) * 0.5f);
Matrix44 lightViewMtx = getLightViewMatrix(center, rDirLight.direction);
Quad nearQuad = rCamera.GetFrustumQuad(nearDepth);
QuadTransform(nearQuad, lightViewMtx);
Quad farQuad = rCamera.GetFrustumQuad(farDepth);
QuadTransform(farQuad, lightViewMtx);
Vec3 boundsMin(FLT_MAX, FLT_MAX, FLT_MAX);
Vec3 boundsMax(-FLT_MAX, -FLT_MAX, -FLT_MAX);
accumQuadMinMax(nearQuad, boundsMin, boundsMax);
accumQuadMinMax(farQuad, boundsMin, boundsMax);
float height = (boundsMax.y - boundsMin.y);
float width = (boundsMax.x - boundsMin.x);
lightCamera.SetAsOrtho(center, rDirLight.direction, std::max(width, height), -500.f, 500.f);
rRenderer.QueueShadowMapPass(lightCamera, m_shadowMapDepthViews[curShadowMapIndex], viewport);
Matrix44 mtxView;
Matrix44 mtxProj;
lightCamera.GetMatrices(mtxView, mtxProj);
pGlobalLights->shadowData[curShadowMapIndex].mtxViewProj = Matrix44Multiply(mtxView, mtxProj);
pGlobalLights->shadowData[curShadowMapIndex].mtxViewProj = Matrix44Transpose(pGlobalLights->shadowData[curShadowMapIndex].mtxViewProj);
pGlobalLights->shadowData[curShadowMapIndex].partitionEndZ = (iPartition == kNumCascades - 1) ? FLT_MAX : farDepth;
++shadowMapsThisFrame;
++curShadowMapIndex;
nearDepth = farDepth;
}
}
else
{
rDirLight.shadowMapIndex = -1;
}
}
for (uint i = 0, count = m_spotLights.size(); i < count; ++i)
{
SpotLight& rSpotLight = m_spotLights[i];
int remainingShadowMaps = MAX_SHADOW_MAPS - curShadowMapIndex - 1;
if (remainingShadowMaps)
{
Matrix44 mtxView;
Matrix44 mtxProj;
float angle = rSpotLight.outerConeAngle + Maths::DegToRad(5.f);
lightCamera.SetAsPerspective(rSpotLight.position, rSpotLight.direction, angle * 2.f, 1.f, 0.1f, 1000.f);
lightCamera.GetMatrices(mtxView, mtxProj);
pGlobalLights->shadowData[curShadowMapIndex].mtxViewProj = Matrix44Multiply(mtxView, mtxProj);
pGlobalLights->shadowData[curShadowMapIndex].mtxViewProj = Matrix44Transpose(pGlobalLights->shadowData[curShadowMapIndex].mtxViewProj);
Rect viewport(0.f, 0.f, (float)s_shadowMapSize, (float)s_shadowMapSize);
rRenderer.QueueShadowMapPass(lightCamera, m_shadowMapDepthViews[curShadowMapIndex], viewport);
rSpotLight.shadowMapIndex = curShadowMapIndex;
++shadowMapsThisFrame;
++curShadowMapIndex;
}
else
{
rSpotLight.shadowMapIndex = -1;
}
}
for (uint i = 0, count = m_pointLights.size(); i < count; ++i)
{
PointLight& rPointLight = m_pointLights[i];
int remainingShadowCubeMaps = MAX_SHADOW_CUBEMAPS - curShadowCubeMapIndex - 1;
if (remainingShadowCubeMaps)
{
rPointLight.shadowMapIndex = curShadowCubeMapIndex + MAX_SHADOW_MAPS;
Rect viewport(0.f, 0.f, (float)s_shadowCubeMapSize, (float)s_shadowCubeMapSize);
#if USE_SINGLEPASS_SHADOW_CUBEMAP
rRenderer.QueueShadowCubeMapPass(rPointLight, m_shadowCubeMapDepthViews[curShadowCubeMapIndex], viewport);
#else
for (uint face = 0; face < 6; ++face)
{
lightCamera.SetAsCubemapFace(light.position, (CubemapFace)face, 0.1f, light.radius * 2.f);
rRenderer.QueueShadowMapPass(lightCamera, m_shadowCubeMapDepthViews[curShadowCubeMapIndex * 6 + face], viewport);
}
#endif
++shadowMapsThisFrame;
++curShadowCubeMapIndex;
}
else
{
rPointLight.shadowMapIndex = -1;
}
}
//////////////////////////////////////////////////////////////////////////
// Apply resource updates
RdrResourceCommandList* pResCommandList = rRenderer.GetActionCommandList();
// Update spot lights
SpotLight* pSpotLights = (SpotLight*)RdrFrameMem::Alloc(sizeof(SpotLight) * m_spotLights.size());
memcpy(pSpotLights, m_spotLights.getData(), sizeof(SpotLight) * m_spotLights.size());
if (!m_hSpotLightListRes)
m_hSpotLightListRes = pResCommandList->CreateStructuredBuffer(pSpotLights, m_spotLights.capacity(), sizeof(SpotLight), RdrResourceUsage::Dynamic);
else
pResCommandList->UpdateBuffer(m_hSpotLightListRes, pSpotLights, sizeof(SpotLight) * m_spotLights.size());
// Update point lights
PointLight* pPointLights = (PointLight*)RdrFrameMem::Alloc(sizeof(PointLight) * m_pointLights.size());
memcpy(pPointLights, m_pointLights.getData(), sizeof(PointLight) * m_pointLights.size());
if (!m_hPointLightListRes)
m_hPointLightListRes = pResCommandList->CreateStructuredBuffer(pPointLights, m_pointLights.capacity(), sizeof(PointLight), RdrResourceUsage::Dynamic);
else
pResCommandList->UpdateBuffer(m_hPointLightListRes, pPointLights, sizeof(PointLight) * m_pointLights.size());
// Update environment lights
EnvironmentLight* pEnvironmentLights = (EnvironmentLight*)RdrFrameMem::Alloc(sizeof(EnvironmentLight) * m_environmentLights.size());
memcpy(pEnvironmentLights, m_environmentLights.getData(), sizeof(EnvironmentLight) * m_environmentLights.size());
if (!m_hEnvironmentLightListRes)
m_hEnvironmentLightListRes = pResCommandList->CreateStructuredBuffer(pEnvironmentLights, m_environmentLights.capacity(), sizeof(EnvironmentLight), RdrResourceUsage::Dynamic);
else
pResCommandList->UpdateBuffer(m_hEnvironmentLightListRes, pEnvironmentLights, sizeof(EnvironmentLight) * m_environmentLights.size());
// Light culling
if (lightingMethod == RdrLightingMethod::Clustered)
{
QueueClusteredLightCulling(rRenderer, rCamera);
}
else
{
QueueTiledLightCulling(rRenderer, rCamera);
}
// Update global lights constant buffer last so the light culling data is up to date.
pGlobalLights->numDirectionalLights = m_directionalLights.size();
pGlobalLights->globalEnvironmentLight = m_globalEnvironmentLight;
pGlobalLights->clusterTileSize = m_clusteredLightData.clusterTileSize;
memcpy(pGlobalLights->directionalLights, m_directionalLights.getData(), sizeof(DirectionalLight) * pGlobalLights->numDirectionalLights);
m_hGlobalLightsCb = pResCommandList->CreateUpdateConstantBuffer(m_hGlobalLightsCb,
pGlobalLights, sizeof(GlobalLightData), RdrCpuAccessFlags::Write, RdrResourceUsage::Dynamic);
// Remove sky light.
m_directionalLights.pop();
// Fill out resource params
pOutResources->hGlobalLightsCb = m_hGlobalLightsCb;
pOutResources->hSpotLightListRes = m_hSpotLightListRes;
pOutResources->hPointLightListRes = m_hPointLightListRes;
pOutResources->hEnvironmentLightListRes = m_hEnvironmentLightListRes;
pOutResources->hShadowCubeMapTexArray = m_hShadowCubeMapTexArray;
pOutResources->hShadowMapTexArray = m_hShadowMapTexArray;
pOutResources->hEnvironmentMapTexArray = m_hEnvironmentMapTexArray;
pOutResources->hLightIndicesRes = (lightingMethod == RdrLightingMethod::Clustered) ?
m_clusteredLightData.hLightIndices : m_tiledLightData.hLightIndices;
}
void Model::loadFile(QString filePath)
{
QFile file(filePath);
if (!file.open(QIODevice::ReadOnly))
return;
//如下两个变量存放模型的边界
Point3d boundsMin( 1e9, 1e9, 1e9);
Point3d boundsMax(-1e9,-1e9,-1e9);
//读取obj格式的文件
QTextStream in(&file);
//now begin to read the verters
Point3d pi;
float currentZ = 0.0;
float currentX = 0.0;
float currentY = 0.0;
QRegExp regZ("[\w\d\s]*Z([0-9\.]*[0-9]*)");
QRegExp regL(";LAYER: *([0-9]*)");
QRegExp regXY("G1 [\w\d\s]* *X([0-9\.]*[0-9]*) *Y([0-9\.]*[0-9]*)");
bool isZ = false;
bool isIn = false;
while(!in.atEnd())
{
QString current_str = in.readLine();
if(current_str.contains(regXY))
{
currentX = regXY.cap(1).toFloat();
currentY = regXY.cap(2).toFloat();
boundsMin.x = qMin(boundsMin.x,currentX);
boundsMax.x = qMax(boundsMax.x, currentX);
boundsMin.y = qMin(boundsMin.y,currentY);
boundsMax.y = qMax(boundsMax.y, currentY);
boundsMin.z = qMin(boundsMin.z,currentZ);
boundsMax.z = qMax(boundsMax.z, currentZ);
qDebug()<< QObject::tr("Xs=%1").arg(currentX);
pi = Point3d(currentX,currentY,currentZ);
m_points.push_back(pi);
}
if(current_str.contains(regL))
{
if((regL.cap(1))=="0")
isIn = false;
else
isIn = true;
isZ = true;
}
if(current_str.contains(regZ)&&(isZ))
{
isZ = false;
QString str_Z = regZ.cap(1);
currentZ = str_Z.toFloat();
}
}
const Point3d bounds = boundsMax - boundsMin;
const qreal scale = 100 / qMax(bounds.x, qMax(bounds.y, bounds.z));
for(int j=0;j<m_points.size();j++)
{
m_points[j] = (m_points[j] - (boundsMin + bounds * 0.5)) * scale;
qDebug()<< QObject::tr("X=%1").arg(m_points[j].x);
}
}