eu07/maszyna
16
0
Fork 0
mirror of https://github.com/MaSzyna-EU07/maszyna.git synced 2026-07-22 12:49:18 +02:00
Code Issues 123 Wiki Activity

basic indexed geometry support, geometry data packing

Browse Source
This commit is contained in:
tmj-fstate
2020-10-18 03:08:59 +02:00
parent af3a724ede
commit 5d252745bd
17 changed files with 975 additions and 512 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
geometrybank.h
View File

@@ -24,8 +24,10 @@ struct basic_vertex {
basic_vertex( glm::vec3 Position, glm::vec3 Normal, glm::vec2 Texture ) :
position( Position ), normal( Normal ), texture( Texture )
{}
void serialize( std::ostream& ) const;
void deserialize( std::istream& );
void serialize( std::ostream&, bool const Tangent = false ) const;
void deserialize( std::istream&, bool const Tangent = false );
void serialize_packed( std::ostream&, bool const Tangent = false ) const;
void deserialize_packed( std::istream&, bool const Tangent = false );
};
// data streams carried in a vertex
@@ -45,9 +47,13 @@ struct stream_units {
std::vector<GLint> texture { GL_TEXTURE0 }; // unit associated with main texture data stream. TODO: allow multiple units per stream
};
using vertex_array = std::vector<basic_vertex>;
using basic_index = std::uint32_t;
void calculate_tangent( vertex_array &vertices, int type );
using vertex_array = std::vector<basic_vertex>;
using index_array = std::vector<basic_index>;
void calculate_tangents( vertex_array &vertices, int type );
void calculate_indices( index_array &Indices, vertex_array &Vertices );
// generic geometry bank class, allows storage, update and drawing of geometry chunks
@@ -90,9 +96,11 @@ public:
~geometry_bank() {}
// methods:
// creates a new geometry chunk of specified type from supplied vertex data. returns: handle to the chunk or NULL
// creates a new geometry chunk of specified type from supplied data. returns: handle to the chunk or NULL
auto create( gfx::vertex_array &Vertices, unsigned int const Type ) -> gfx::geometry_handle;
// replaces data of specified chunk with the supplied vertex data, starting from specified offset
// creates a new indexed geometry chunk of specified type from supplied data. returns: handle to the chunk or NULL
auto create( gfx::index_array &Indices, gfx::vertex_array &Vertices, unsigned int const Type ) -> gfx::geometry_handle;
// replaces vertex data of specified chunk with the supplied data, starting from specified offset
auto replace( gfx::vertex_array &Vertices, gfx::geometry_handle const &Geometry, std::size_t const Offset = 0 ) -> bool;
// adds supplied vertex data at the end of specified chunk
auto append( gfx::vertex_array &Vertices, gfx::geometry_handle const &Geometry ) -> bool;
@@ -107,6 +115,8 @@ public:
return count; }
// frees subclass-specific resources associated with the bank, typically called when the bank wasn't in use for a period of time
void release();
// provides direct access to index data of specfied chunk
auto indices( gfx::geometry_handle const &Geometry ) const -> gfx::index_array const &;
// provides direct access to vertex data of specfied chunk
auto vertices( gfx::geometry_handle const &Geometry ) const -> gfx::vertex_array const &;
@@ -115,12 +125,20 @@ protected:
struct geometry_chunk {
unsigned int type; // kind of geometry used by the chunk
gfx::vertex_array vertices; // geometry data
// NOTE: constructor doesn't copy provided vertex data, but moves it
gfx::index_array indices; // index data
// NOTE: constructor doesn't copy provided geometry data, but moves it
geometry_chunk( gfx::vertex_array &Vertices, unsigned int Type ) :
type( Type )
{
vertices.swap( Vertices );
}
// NOTE: constructor doesn't copy provided geometry data, but moves it
geometry_chunk( gfx::index_array &Indices, gfx::vertex_array &Vertices, unsigned int Type ) :
type( Type )
{
vertices.swap( Vertices );
indices.swap( Indices );
}
};
using geometrychunk_sequence = std::vector<geometry_chunk>;
@@ -162,8 +180,10 @@ public:
void update();
// creates a new geometry bank. returns: handle to the bank or NULL
auto create_bank() -> gfx::geometrybank_handle;
// creates a new geometry chunk of specified type from supplied vertex data, in specified bank. returns: handle to the chunk or NULL
// creates a new geometry chunk of specified type from supplied data, in specified bank. returns: handle to the chunk or NULL
auto create_chunk( gfx::vertex_array &Vertices, gfx::geometrybank_handle const &Geometry, int const Type ) -> gfx::geometry_handle;
// creates a new indexed geometry chunk of specified type from supplied data, in specified bank. returns: handle to the chunk or NULL
auto create_chunk( gfx::index_array &Indices, gfx::vertex_array &Vertices, gfx::geometrybank_handle const &Geometry, unsigned int const Type ) -> gfx::geometry_handle;
// replaces data of specified chunk with the supplied vertex data, starting from specified offset
auto replace( gfx::vertex_array &Vertices, gfx::geometry_handle const &Geometry, std::size_t const Offset = 0 ) -> bool;
// adds supplied vertex data at the end of specified chunk
@@ -175,6 +195,8 @@ public:
while( First != Last ) {
draw( *First, Streams );
++First; } }
// provides direct access to index data of specfied chunk
auto indices( gfx::geometry_handle const &Geometry ) const -> gfx::index_array const &;
// provides direct access to vertex data of specfied chunk
auto vertices( gfx::geometry_handle const &Geometry ) const -> gfx::vertex_array const &;
// sets target texture unit for the texture data stream