//==============================
// OvrDebugLinesLocal::InitVBO
void OvrDebugLinesLocal::InitVBO( GlGeometry & geo, LineVertex_t * vertices, const int maxVerts,
LineIndex_t * indices, const int maxIndices )
{
const int numVertexBytes = maxVerts * sizeof( LineVertex_t );
// create vertex array object
glGenVertexArraysOES_( 1, &geo.vertexArrayObject );
glBindVertexArrayOES_( geo.vertexArrayObject );
// create the vertex buffer
glGenBuffers( 1, &geo.vertexBuffer );
glBindBuffer( GL_ARRAY_BUFFER, geo.vertexBuffer );
glBufferData( GL_ARRAY_BUFFER, numVertexBytes, (void*)vertices, GL_DYNAMIC_DRAW );
glEnableVertexAttribArray( VERTEX_ATTRIBUTE_LOCATION_POSITION ); // x, y and z
glVertexAttribPointer( VERTEX_ATTRIBUTE_LOCATION_POSITION, 3, GL_FLOAT, false, sizeof( LineVertex_t ), (void*)0 );
glEnableVertexAttribArray( VERTEX_ATTRIBUTE_LOCATION_COLOR ); // color
glVertexAttribPointer( VERTEX_ATTRIBUTE_LOCATION_COLOR, 4, GL_FLOAT, true, sizeof( LineVertex_t ), (void*)12 );
const int numIndexBytes = maxIndices * sizeof( LineIndex_t );
glGenBuffers( 1, &geo.indexBuffer );
glBindBuffer( GL_ELEMENT_ARRAY_BUFFER, geo.indexBuffer );
glBufferData( GL_ELEMENT_ARRAY_BUFFER, numIndexBytes, (void*)indices, GL_STATIC_DRAW );
geo.indexCount = 0; // nothing to render right now
}
void WarpGeometry_CreateQuad( WarpGeometry * geometry )
{
struct vertices_t
{
float positions[4][3];
float uvs[4][2];
float colors[4][4];
}
vertices =
{
{ { -1, -1, 0 }, { -1, 1, 0 }, { 1, -1, 0 }, { 1, 1, 0 } },
{ { 0, 1 }, { 1, 1 }, { 0, 0 }, { 1, 0 } },
{ { 1, 1, 1, 0 }, { 1, 1, 1, 0 }, { 1, 1, 1, 0 }, { 1, 1, 1, 0 } }
};
unsigned short indices[6] = { 0, 1, 2, 2, 1, 3 };
geometry->vertexCount = 4;
geometry->indexCount = 6;
glGenVertexArraysOES_( 1, &geometry->vertexArrayObject );
glBindVertexArrayOES_( geometry->vertexArrayObject );
glGenBuffers( 1, &geometry->vertexBuffer );
glBindBuffer( GL_ARRAY_BUFFER, geometry->vertexBuffer );
glBufferData( GL_ARRAY_BUFFER, sizeof( vertices ), &vertices, GL_STATIC_DRAW );
glGenBuffers( 1, &geometry->indexBuffer );
glBindBuffer( GL_ELEMENT_ARRAY_BUFFER, geometry->indexBuffer );
glBufferData( GL_ELEMENT_ARRAY_BUFFER, sizeof( indices ), indices, GL_STATIC_DRAW );
glEnableVertexAttribArray( VERTEX_ATTRIBUTE_LOCATION_POSITION );
glVertexAttribPointer( VERTEX_ATTRIBUTE_LOCATION_POSITION, 3, GL_FLOAT, false,
sizeof( vertices.positions[0] ), (const GLvoid *)offsetof( vertices_t, positions ) );
glEnableVertexAttribArray( VERTEX_ATTRIBUTE_LOCATION_UV0 );
glVertexAttribPointer( VERTEX_ATTRIBUTE_LOCATION_UV0, 2, GL_FLOAT, false,
sizeof( vertices.uvs[0] ), (const GLvoid *)offsetof( vertices_t, uvs ) );
glEnableVertexAttribArray( VERTEX_ATTRIBUTE_LOCATION_COLOR );
glVertexAttribPointer( VERTEX_ATTRIBUTE_LOCATION_COLOR, 4, GL_FLOAT, false,
sizeof( vertices.colors[0] ), (const GLvoid *)offsetof( vertices_t, colors ) );
glBindVertexArrayOES_( 0 );
}
void GlGeometry::Create( const VertexAttribs & attribs, const Array< TriangleIndex > & indices )
{
vertexCount = attribs.position.GetSizeI();
indexCount = indices.GetSizeI();
glGenBuffers( 1, &vertexBuffer );
glGenBuffers( 1, &indexBuffer );
glGenVertexArraysOES_( 1, &vertexArrayObject );
glBindVertexArrayOES_( vertexArrayObject );
glBindBuffer( GL_ARRAY_BUFFER, vertexBuffer );
Array< uint8_t > packed;
PackVertexAttribute( packed, attribs.position, VERTEX_ATTRIBUTE_LOCATION_POSITION, GL_FLOAT, 3 );
PackVertexAttribute( packed, attribs.normal, VERTEX_ATTRIBUTE_LOCATION_NORMAL, GL_FLOAT, 3 );
PackVertexAttribute( packed, attribs.tangent, VERTEX_ATTRIBUTE_LOCATION_TANGENT, GL_FLOAT, 3 );
PackVertexAttribute( packed, attribs.binormal, VERTEX_ATTRIBUTE_LOCATION_BINORMAL, GL_FLOAT, 3 );
PackVertexAttribute( packed, attribs.color, VERTEX_ATTRIBUTE_LOCATION_COLOR, GL_FLOAT, 4 );
PackVertexAttribute( packed, attribs.uv0, VERTEX_ATTRIBUTE_LOCATION_UV0, GL_FLOAT, 2 );
PackVertexAttribute( packed, attribs.uv1, VERTEX_ATTRIBUTE_LOCATION_UV1, GL_FLOAT, 2 );
PackVertexAttribute( packed, attribs.jointIndices, VERTEX_ATTRIBUTE_LOCATION_JOINT_INDICES, GL_INT, 4 );
PackVertexAttribute( packed, attribs.jointWeights, VERTEX_ATTRIBUTE_LOCATION_JOINT_WEIGHTS, GL_FLOAT, 4 );
glBufferData( GL_ARRAY_BUFFER, packed.GetSize() * sizeof( packed[0] ), packed.GetDataPtr(), GL_STATIC_DRAW );
glBindBuffer( GL_ELEMENT_ARRAY_BUFFER, indexBuffer );
glBufferData( GL_ELEMENT_ARRAY_BUFFER, indices.GetSizeI() * sizeof( indices[0] ), indices.GetDataPtr(), GL_STATIC_DRAW );
glBindVertexArrayOES_( 0 );
glDisableVertexAttribArray( VERTEX_ATTRIBUTE_LOCATION_POSITION );
glDisableVertexAttribArray( VERTEX_ATTRIBUTE_LOCATION_NORMAL );
glDisableVertexAttribArray( VERTEX_ATTRIBUTE_LOCATION_TANGENT );
glDisableVertexAttribArray( VERTEX_ATTRIBUTE_LOCATION_BINORMAL );
glDisableVertexAttribArray( VERTEX_ATTRIBUTE_LOCATION_COLOR );
glDisableVertexAttribArray( VERTEX_ATTRIBUTE_LOCATION_UV0 );
glDisableVertexAttribArray( VERTEX_ATTRIBUTE_LOCATION_UV1 );
glDisableVertexAttribArray( VERTEX_ATTRIBUTE_LOCATION_JOINT_INDICES );
glDisableVertexAttribArray( VERTEX_ATTRIBUTE_LOCATION_JOINT_WEIGHTS );
}
//==============================
// BitmapFontSurfaceLocal::Init
// Initializes the surface VBO
void BitmapFontSurfaceLocal::Init( const int maxVertices )
{
assert( Geo.vertexBuffer == 0 && Geo.indexBuffer == 0 && Geo.vertexArrayObject == 0 );
assert( Vertices == NULL );
if ( Vertices != NULL )
{
delete [] Vertices;
Vertices = NULL;
}
assert( maxVertices % 4 == 0 );
MaxVertices = maxVertices;
MaxIndices = ( maxVertices / 4 ) * 6;
Vertices = new fontVertex_t[ maxVertices ];
const int vertexByteCount = maxVertices * sizeof( fontVertex_t );
// font VAO
glGenVertexArraysOES_( 1, &Geo.vertexArrayObject );
glBindVertexArrayOES_( Geo.vertexArrayObject );
// vertex buffer
glGenBuffers( 1, &Geo.vertexBuffer );
glBindBuffer( GL_ARRAY_BUFFER, Geo.vertexBuffer );
glBufferData( GL_ARRAY_BUFFER, vertexByteCount, (void*)Vertices, GL_DYNAMIC_DRAW );
glEnableVertexAttribArray( VERTEX_ATTRIBUTE_LOCATION_POSITION ); // x, y and z
glVertexAttribPointer( VERTEX_ATTRIBUTE_LOCATION_POSITION, 3, GL_FLOAT, GL_FALSE, sizeof( fontVertex_t ), (void*)0 );
glEnableVertexAttribArray( VERTEX_ATTRIBUTE_LOCATION_UV0 ); // s and t
glVertexAttribPointer( VERTEX_ATTRIBUTE_LOCATION_UV0, 2, GL_FLOAT, GL_FALSE, sizeof( fontVertex_t ), (void*)offsetof( fontVertex_t, s ) );
glEnableVertexAttribArray( VERTEX_ATTRIBUTE_LOCATION_COLOR ); // color
glVertexAttribPointer( VERTEX_ATTRIBUTE_LOCATION_COLOR, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof( fontVertex_t ), (void*)offsetof( fontVertex_t, rgba ) );
glDisableVertexAttribArray( VERTEX_ATTRIBUTE_LOCATION_UV1 );
glEnableVertexAttribArray( VERTEX_ATTRIBUTE_LOCATION_FONT_PARMS ); // outline parms
glVertexAttribPointer( VERTEX_ATTRIBUTE_LOCATION_FONT_PARMS, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof( fontVertex_t ), (void*)offsetof( fontVertex_t, fontParms ) );
fontIndex_t * indices = new fontIndex_t[ MaxIndices ];
const int indexByteCount = MaxIndices * sizeof( fontIndex_t );
// indices never change
int numQuads = MaxIndices / 6;
int v = 0;
for ( int i = 0; i < numQuads; i++ ) {
indices[i * 6 + 0] = v + 2;
indices[i * 6 + 1] = v + 1;
indices[i * 6 + 2] = v + 0;
indices[i * 6 + 3] = v + 3;
indices[i * 6 + 4] = v + 2;
indices[i * 6 + 5] = v + 0;
v += 4;
}
glGenBuffers( 1, &Geo.indexBuffer );
glBindBuffer( GL_ELEMENT_ARRAY_BUFFER, Geo.indexBuffer );
glBufferData( GL_ELEMENT_ARRAY_BUFFER, indexByteCount, (void*)indices, GL_STATIC_DRAW );
Geo.indexCount = 0; // if there's anything to render this will be modified
glBindVertexArrayOES_( 0 );
delete [] indices;
CurVertex = 0;
CurIndex = 0;
LOG( "BitmapFontSurfaceLocal::Init: success" );
}
void Geometry_MakeVertexArrayObject( SGeometry *geometry )
{
uint index;
GLuint vertexArrayObject;
GLuint vertexBuffer;
GLuint indexBuffer;
uint vertexCount;
uint positionSize;
uint texCoordSize;
uint positionOffset;
uint texCoordOffset;
uint colorOffset;
index = geometry->updateIndex % BUFFER_COUNT;
vertexBuffer = geometry->vertexBuffers[index];
indexBuffer = geometry->indexBuffers[index];
assert( vertexBuffer );
assert( indexBuffer );
OVR::GL_CheckErrors( "before Geometry_MakeVertexArrayObject" );
vertexArrayObject = geometry->vertexArrayObjects[index];
if ( !vertexArrayObject )
glGenVertexArraysOES_( 1, &vertexArrayObject );
glBindVertexArrayOES_( vertexArrayObject );
glBindBuffer( GL_ELEMENT_ARRAY_BUFFER, indexBuffer );
glBindBuffer( GL_ARRAY_BUFFER, vertexBuffer );
glEnableVertexAttribArray( VERTEX_ATTRIBUTE_POSITION );
glEnableVertexAttribArray( VERTEX_ATTRIBUTE_TEXCOORD );
glEnableVertexAttribArray( VERTEX_ATTRIBUTE_COLOR );
vertexCount = geometry->vertexCount;
positionSize = sizeof( float ) * 3 * vertexCount;
texCoordSize = sizeof( float ) * 2 * vertexCount;
positionOffset = 0;
texCoordOffset = positionOffset + positionSize;
colorOffset = texCoordOffset + texCoordSize;
glVertexAttribPointer( VERTEX_ATTRIBUTE_POSITION,
3, GL_FLOAT, GL_FALSE, sizeof( float ) * 3,
(void *)( positionOffset ) );
glVertexAttribPointer( VERTEX_ATTRIBUTE_TEXCOORD,
2, GL_FLOAT, GL_FALSE, sizeof( float ) * 2,
(void *)( texCoordOffset ) );
glVertexAttribPointer( VERTEX_ATTRIBUTE_COLOR,
4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof( byte ) * 4,
(void *)( colorOffset ) );
glBindVertexArrayOES_( 0 );
glBindBuffer( GL_ELEMENT_ARRAY_BUFFER, 0 );
glBindBuffer( GL_ARRAY_BUFFER, 0 );
glDisableVertexAttribArray( VERTEX_ATTRIBUTE_POSITION );
glDisableVertexAttribArray( VERTEX_ATTRIBUTE_TEXCOORD );
glDisableVertexAttribArray( VERTEX_ATTRIBUTE_COLOR );
geometry->vertexArrayObjects[index] = vertexArrayObject;
OVR::GL_CheckErrors( "after Geometry_MakeVertexArrayObject" );
}
