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Code Issues 123 Wiki Activity

vao changes

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This commit is contained in:
milek7
2017-08-03 00:07:29 +02:00
parent 726a834232
commit 60e38616bd
2 changed files with 4 additions and 125 deletions
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83
openglgeometrybank.cpp
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@@ -119,7 +119,6 @@ geometry_bank::vertices( geometry_handle const &Geometry ) const {
// opengl vbo-based variant of the geometry bank
GLuint opengl_vbogeometrybank::m_activebuffer { 0 }; // buffer bound currently on the opengl end, if any
unsigned int opengl_vbogeometrybank::m_activestreams { stream::none }; // currently enabled data type pointers
// create() subclass details
void
@@ -130,7 +129,6 @@ opengl_vbogeometrybank::create_( geometry_handle const &Geometry ) {
// kiss the existing buffer goodbye, new overall data size means we'll be making a new one
delete_buffer();
bind_streams(stream::none);
glGenVertexArrays(1, &m_vao);
}
@@ -172,6 +170,7 @@ opengl_vbogeometrybank::draw_( geometry_handle const &Geometry, unsigned int con
// try to set up the buffer we need
::glGenBuffers( 1, &m_buffer );
bind_buffer();
bind_streams(Streams);
// NOTE: we're using static_draw since it's generally true for all we have implemented at the moment
// TODO: allow to specify usage hint at the object creation, and pass it here
::glBufferData(
@@ -203,9 +202,6 @@ opengl_vbogeometrybank::draw_( geometry_handle const &Geometry, unsigned int con
chunk.vertices.data() );
chunkrecord.is_good = true;
}
if( m_activestreams != Streams ) {
bind_streams( Streams );
}
// ...render...
::glDrawArrays( chunk.type, (GLint)chunkrecord.offset, (GLsizei)chunkrecord.size );
@@ -215,7 +211,7 @@ opengl_vbogeometrybank::draw_( geometry_handle const &Geometry, unsigned int con
// release () subclass details
void
opengl_vbogeometrybank::release_() {
glDeleteVertexArrays(1, &m_vao);
delete_buffer();
}
@@ -224,18 +220,15 @@ opengl_vbogeometrybank::bind_buffer() {
glBindVertexArray(m_vao);
::glBindBuffer( GL_ARRAY_BUFFER, m_buffer );
m_activebuffer = m_buffer;
bind_streams(stream::none);
}
void
opengl_vbogeometrybank::delete_buffer() {
glDeleteVertexArrays(1, &m_vao);
if( m_buffer != 0 ) {
::glDeleteBuffers( 1, &m_buffer );
if( m_activebuffer == m_buffer ) {
m_activebuffer = 0;
bind_streams( stream::none );
}
m_buffer = 0;
m_buffercapacity = 0;
@@ -263,6 +256,7 @@ opengl_vbogeometrybank::bind_streams( unsigned int const Streams ) {
glDisableVertexAttribArray(1);
}
//m7todo: support it
if( Streams & stream::color ) {
}
@@ -277,77 +271,6 @@ opengl_vbogeometrybank::bind_streams( unsigned int const Streams ) {
else {
glDisableVertexAttribArray(2);
}
m_activestreams = Streams;
}
// opengl display list based variant of the geometry bank
// create() subclass details
void
opengl_dlgeometrybank::create_( geometry_handle const &Geometry ) {
m_chunkrecords.emplace_back( chunk_record() );
}
// replace() subclass details
void
opengl_dlgeometrybank::replace_( geometry_handle const &Geometry ) {
delete_list( Geometry );
}
// draw() subclass details
void
opengl_dlgeometrybank::draw_( geometry_handle const &Geometry, unsigned int const Streams ) {
auto &chunkrecord = m_chunkrecords[ Geometry.chunk - 1 ];
if( chunkrecord.streams != Streams ) {
delete_list( Geometry );
}
if( chunkrecord.list == 0 ) {
// we don't have a list ready, so compile one
chunkrecord.streams = Streams;
chunkrecord.list = ::glGenLists( 1 );
auto const &chunk = geometry_bank::chunk( Geometry );
::glNewList( chunkrecord.list, GL_COMPILE );
::glBegin( chunk.type );
for( auto const &vertex : chunk.vertices ) {
if( Streams & stream::normal ) { ::glNormal3fv( glm::value_ptr( vertex.normal ) ); }
else if( Streams & stream::color ) { ::glColor3fv( glm::value_ptr( vertex.normal ) ); }
if( Streams & stream::texture ) { ::glTexCoord2fv( glm::value_ptr( vertex.texture ) ); }
if( Streams & stream::position ) { ::glVertex3fv( glm::value_ptr( vertex.position ) ); }
}
::glEnd();
::glEndList();
}
// with the list done we can just play it
::glCallList( chunkrecord.list );
}
// release () subclass details
void
opengl_dlgeometrybank::release_() {
for( auto &chunkrecord : m_chunkrecords ) {
if( chunkrecord.list != 0 ) {
::glDeleteLists( chunkrecord.list, 1 );
chunkrecord.list = 0;
}
chunkrecord.streams = stream::none;
}
}
void
opengl_dlgeometrybank::delete_list( geometry_handle const &Geometry ) {
// NOTE: given it's our own internal method we trust it to be called with valid parameters
auto &chunkrecord = m_chunkrecords[ Geometry.chunk - 1 ];
if( chunkrecord.list != 0 ) {
::glDeleteLists( chunkrecord.list, 1 );
chunkrecord.list = 0;
}
chunkrecord.streams = stream::none;
}
// geometry bank manager, holds collection of geometry banks

46
openglgeometrybank.h
View File

@@ -164,8 +164,7 @@ public:
static
void
reset() {
m_activebuffer = 0;
m_activestreams = stream::none; }
m_activebuffer = 0; }
private:
// types:
@@ -199,7 +198,6 @@ private:
// members:
static GLuint m_activebuffer; // buffer bound currently on the opengl end, if any
static unsigned int m_activestreams;
GLuint m_buffer { NULL }; // id of the buffer holding data on the opengl end
GLuint m_vao = 0;
std::size_t m_buffercapacity{ 0 }; // total capacity of the last established buffer
@@ -207,48 +205,6 @@ private:
};
// opengl display list based variant of the geometry bank
class opengl_dlgeometrybank : public geometry_bank {
public:
// constructors:
opengl_dlgeometrybank() = default;
// destructor:
~opengl_dlgeometrybank() {
for( auto &chunkrecord : m_chunkrecords ) {
::glDeleteLists( chunkrecord.list, 1 ); } }
private:
// types:
struct chunk_record {
GLuint list { 0 }; // display list associated with the chunk
unsigned int streams { 0 }; // stream combination used to generate the display list
};
typedef std::vector<chunk_record> chunkrecord_sequence;
// methods:
// create() subclass details
void
create_( geometry_handle const &Geometry );
// replace() subclass details
void
replace_( geometry_handle const &Geometry );
// draw() subclass details
void
draw_( geometry_handle const &Geometry, unsigned int const Streams );
// release () subclass details
void
release_();
void
delete_list( geometry_handle const &Geometry );
// members:
chunkrecord_sequence m_chunkrecords; // helper data for all stored geometry chunks, in matching order
};
// geometry bank manager, holds collection of geometry banks
typedef geometry_handle geometrybank_handle;