Changeset 457 for trunk/src

Timestamp:

08/13/15 20:51:12 (10 years ago)

Author:

epyon

Message:

• mesh_creator - mirror and swap_culling, const on merge and is_same_format
• mesh_data_pack - get by hash

File:

• trunk/src/gfx/mesh_creator.cc (modified) (3 diffs)

trunk/src/gfx/mesh_creator.cc

@@ -345 +345 @@
                         tan.y,
                         tan.x * r21 + tan.z * r22,
-                        1.0f // make sure this is proper
+                        tan.w // make sure this is proper
                         );
         }
 
 
+}
+
+void nv::mesh_data_creator::mirror( bool x, bool z )
+{
+        if ( !x && !z ) return;
+        NV_ASSERT( m_pos_type == FLOAT_VECTOR_3, "Unsupported position vector type!" );
+        NV_ASSERT( m_nrm_type == FLOAT_VECTOR_3, "Unsupported normal vector type!" );
+        NV_ASSERT( m_tan_type == FLOAT_VECTOR_4, "Unsupported tangent vector type!" );
+
+        float kx = x ? -1.0f : 1.0f;
+        float kz = z ? -1.0f : 1.0f;
+
+        unsigned vtx_count = m_pos_channel->size();
+        uint8* pos_data = raw_data_channel_access( m_pos_channel ).raw_data();
+        uint8* nrm_data = raw_data_channel_access( m_nrm_channel ).raw_data();
+        uint8* tan_data = raw_data_channel_access( m_tan_channel ).raw_data();
+        for ( unsigned int i = 0; i < vtx_count; ++i )
+        {
+                vec3& pos = *reinterpret_cast<vec3*>( pos_data + m_pos_channel->element_size() * i + m_pos_offset );
+                vec3& nrm = *reinterpret_cast<vec3*>( nrm_data + m_nrm_channel->element_size() * i + m_nrm_offset );
+                vec4& tan = *reinterpret_cast<vec4*>( tan_data + m_tan_channel->element_size() * i + m_tan_offset );
+
+                pos = vec3(
+                        pos.x * kx,
+                        pos.y,
+                        pos.z * kz
+                        );
+                nrm = vec3(
+                        nrm.x * kx,
+                        nrm.y,
+                        nrm.z * kz
+                        );
+                tan = vec4(
+                        tan.x * kx,
+                        tan.y,
+                        tan.z * kz,
+                        tan.w * kx * kz// make sure this is proper
+                        );
+        }
+
+        if ( !( x && z ) ) 
+                swap_culling();
+}
+
+template < typename T >
+static inline void swap_culling_impl( nv::raw_data_channel* index_channel )
+{
+        nv::raw_data_channel_access ichannel( index_channel );
+        T* indices = reinterpret_cast<T*>( ichannel.raw_data() );
+        nv::uint32 count = index_channel->size() / 3;
+        for ( nv::uint32 i = 0; i < count; ++i )
+        {
+                nv::swap( indices[i * 3], indices[i * 3 + 1] );
+        }
+}
+
+void nv::mesh_data_creator::swap_culling()
+{
+        NV_ASSERT( m_idx_channel, "Swap culling unsupported on non-indexed meshes!" );
+        NV_ASSERT( m_idx_channel->descriptor().size() == 1, "Malformed index channel!" );
+        NV_ASSERT( m_idx_channel->size() % 3 == 0, "Malformed index channel - not per GL_TRIANGLE LAYOUT?" );
+
+        if ( m_idx_channel->size() == 0 ) return;
+        switch ( m_idx_type )
+        {
+        case USHORT: swap_culling_impl< uint16 >( m_idx_channel ); break;
+        case UINT: swap_culling_impl< uint16 >( m_idx_channel ); break;
+        default: NV_ASSERT( false, "Swap culling supports only unsigned and unsigned short indices!" ); break;
+        }
 }
 
@@ -477 +546 @@
 
 
-bool nv::mesh_data_creator::is_same_format( data_channel_set* other )
+bool nv::mesh_data_creator::is_same_format( const data_channel_set* other )
 {
         if ( m_data->size() != other->size() ) return false;
@@ -488 +557 @@
 }
 
-void nv::mesh_data_creator::merge( data_channel_set* other )
+void nv::mesh_data_creator::merge( const data_channel_set* other )
 {
         if ( !is_same_format( other ) ) return;