void SharedMeshContainer::ValidateShaderTechniqueTable()
{
BasicMesh *pMeshObject = m_MeshObjectHandle.GetMesh().get();
if( !pMeshObject )
return;
if( m_ShaderTechnique.size_y() == 0 )
{
m_ShaderTechnique.resize(1,1);
m_ShaderTechnique(0,0).SetTechniqueName( "NoShader" );
}
else if( m_ShaderTechnique.size_y() == 1 && 2 <= pMeshObject->GetNumMaterials() )
{
// only one technique and 2 or more materials
// - assumes the user wants to render all the materials with the same shader technique
m_PropertyFlags |= PF_USE_SINGLE_TECHNIQUE_FOR_ALL_MATERIALS;
}
else if( m_ShaderTechnique.size_y() < pMeshObject->GetNumMaterials() )
{
int num_orig_rows = m_ShaderTechnique.size_y();
// (the number of techniques) < (the number of materials)
// - copy the last technique and make sure there are as many techniques as materials
// increase the columns to cover all the materials
m_ShaderTechnique.increase_y( pMeshObject->GetNumMaterials() - m_ShaderTechnique.size_y() );
// overwrite increased rows with the last technique for each LOD
int lod, num_lods = m_ShaderTechnique.size_x(); // columns: for LODs
int row, num_rows = m_ShaderTechnique.size_y(); // rows: for materials
for( lod=0; lod<num_lods; lod++ )
{
for( row=num_orig_rows; row<num_rows; row++ )
{
m_ShaderTechnique( lod, row )
= m_ShaderTechnique( lod, num_orig_rows - 1 );
}
}
}
}
void CBE_Skybox::Draw(CCopyEntity* pCopyEnt)
{
BasicMesh* pMeshObject = m_MeshProperty.m_MeshObjectHandle.GetMesh().get();
if( !pMeshObject )
{
ONCE( LOG_PRINT_WARNING( " An invlid mesh object: base entity '%s'", m_strName.c_str() ) );
return;
}
// set the world transform
Matrix44 world( Matrix44Scaling( 10.0f, 10.0f, 10.0f ) );
Vector3 vPos;
Camera* pCamera = m_pStage->GetCurrentCamera();
if( pCamera )
vPos = pCamera->GetPosition();
else
vPos = Vector3(0,0,0);
world(0,3) = vPos.x;
world(1,3) = vPos.y;
world(2,3) = vPos.z;
world(3,3) = 1;
FixedFunctionPipelineManager().SetWorldTransform( world );
pMeshObject->SetVertexDeclaration();
int num_materials = pMeshObject->GetNumMaterials();
bool shift_camera_height = true;
// ShaderParameter<float> cam_height_param( "g_CameraHeight" );
// Disable depth-test and writing to depth buffer.
// These 2 settings and restored after rendering skybox because they are changed only when necessary.
// This is not required if you are using HLSL effect of Direct3D, and the technique to render
// the skybox defines the same render states.
// If you are using OpenGL, you have to do this whether you are using GLSL or not?
GraphicsDevice().Disable( RenderStateType::DEPTH_TEST );
GraphicsDevice().Disable( RenderStateType::WRITING_INTO_DEPTH_BUFFER );
GraphicsDevice().Disable( RenderStateType::LIGHTING );
// save the original texture and temporarily overwrite it with the sky texture
TextureHandle orig_tex;
if( 0 < num_materials )
{
if( pMeshObject->Material(0).Texture.empty() )
pMeshObject->Material(0).Texture.resize( 1 );
orig_tex = pMeshObject->Material(0).Texture[0];
pMeshObject->Material(0).Texture[0] = m_SkyboxTexture;
}
ShaderManager *pShaderManager = m_MeshProperty.m_ShaderHandle.GetShaderManager();
if( pShaderManager )
// && pShaderManager->IsValid() ) // check if pEffect is present?
{
if( shift_camera_height )
{
Camera *pCam = m_pStage->GetCurrentCamera();
float fCamHeight;
if( pCam )
fCamHeight = pCam->GetPosition().y;
else
fCamHeight = 5.0f;
pShaderManager->GetEffect()->SetFloat( "g_CameraHeight", fCamHeight );
// pShaderManager->SetParam( "g_CameraHeight", fCamHeight );
// pEffect->SetFloat( "g_TexVShiftFactor", 0.000005f );
// pShaderManager->SetParam( "g_TexVShiftFactor", 0.000005f );
// cam_height_param.Parameter() = fCamHeight;
// pShaderManager->SetParam( cam_height_param );
}
// render the skybox mesh with an HLSL shader
pShaderManager->SetWorldTransform( world );
Result::Name res = pShaderManager->SetTechnique( m_MeshProperty.m_ShaderTechnique(0,0) );
// Meshes are divided into subsets by materials. Render each subset in a loop
pMeshObject->Render( *pShaderManager );
}
else
{
// RenderAsSkybox( m_MeshProperty.m_MeshObjectHandle, vPos );
pMeshObject->Render();
}
if( 0 < num_materials
&& 0 < pMeshObject->Material(0).Texture.size() )
{
// restore the original texture
pMeshObject->Material(0).Texture[0] = orig_tex;
}
GraphicsDevice().Enable( RenderStateType::DEPTH_TEST );
GraphicsDevice().Enable( RenderStateType::WRITING_INTO_DEPTH_BUFFER );
}
// - Set the world transform 'world_transform' to shader
// - Update shader params
// - Set technique
void MeshContainerRenderMethod::RenderMesh( BasicMesh &mesh, const Matrix34& world_transform )
{
if( !m_RenderMethodsAndSubsetIndices.empty() )
{
if( m_RenderMethodsAndSubsetIndices.size() == 1
&& m_RenderMethodsAndSubsetIndices[0].second.empty() )
{
// render all the subsets at once
RenderMeshOrMeshSubsets( mesh, m_RenderMethodsAndSubsetIndices[0].second, m_RenderMethodsAndSubsetIndices[0].first, world_transform );
}
else
{
for( int i=0; i<(int)m_RenderMethodsAndSubsetIndices.size(); i++ )
{
SubsetRenderMethod& render_method = m_RenderMethodsAndSubsetIndices[i].first;
const vector<int>& subset_indices = m_RenderMethodsAndSubsetIndices[i].second;
for( int j=0; j<(int)subset_indices.size(); j++ )
{
RenderMeshOrMeshSubsets( mesh, subset_indices, render_method, world_transform );
}
}
}
}
else if( 0 < m_vecSubsetNameToRenderMethod.size() )
{
// render subsets one by one
// set different shaders / techniques for each subset
const int num_subsets = mesh.GetNumMaterials();
std::vector<int> *pvecIndicesOfSubsetsToRender = NULL;
if( m_vecIndicesOfSubsetsToRender.size() == 0 )
{
// render all the subsets
// - create the full indices list
// - For the same mesh, this is done only once.
for( int j=(int)m_vecFullIndicesOfSubsets.size(); j<num_subsets; j++ )
m_vecFullIndicesOfSubsets.push_back( j );
pvecIndicesOfSubsetsToRender = &m_vecFullIndicesOfSubsets;
}
else
{
pvecIndicesOfSubsetsToRender = &m_vecIndicesOfSubsetsToRender;
}
int lod_index = 0;
// for( i=0; i<num_subsets; i++ )
for( size_t i=0; i<pvecIndicesOfSubsetsToRender->size(); i++ )
{
int index = (*pvecIndicesOfSubsetsToRender)[i];
map< string, SubsetRenderMethod >::iterator itr
= m_vecSubsetNameToRenderMethod[lod_index].find( mesh.GetMaterial(index).Name );
if( itr == m_vecSubsetNameToRenderMethod[lod_index].end() )
continue;
SubsetRenderMethod& subset_render_method = (*itr).second;
ShaderManager *pShaderMgr = subset_render_method.m_Shader.GetShaderManager();
if( !pShaderMgr )
continue;
pShaderMgr->SetWorldTransform( world_transform );
pShaderMgr->SetTechnique( subset_render_method.m_Technique );
for( size_t j=0; j<subset_render_method.m_vecpShaderParamsLoader.size(); j++ )
{
subset_render_method.m_vecpShaderParamsLoader[j]->UpdateShaderParams( *pShaderMgr );
}
mesh.RenderSubset( *pShaderMgr, index );
for( size_t j=0; j<subset_render_method.m_vecpShaderParamsLoader.size(); j++ )
{
subset_render_method.m_vecpShaderParamsLoader[j]->ResetShaderParams( *pShaderMgr );
}
}
}
}