RocketRenderingInterface::RocketRenderingInterface()
{
renderOffset.x = 0.0f;
renderOffset.y = 0.0f;
vertex_stream_buffer = gr_create_buffer(BufferType::Vertex, BufferUsageHint::Streaming);
index_stream_buffer = gr_create_buffer(BufferType::Index, BufferUsageHint::Streaming);
layout.add_vertex_component(vertex_format_data::POSITION2, sizeof(Vertex), offsetof(Vertex, position));
layout.add_vertex_component(vertex_format_data::COLOR4, sizeof(Vertex), offsetof(Vertex, colour));
layout.add_vertex_component(vertex_format_data::TEX_COORD2, sizeof(Vertex), offsetof(Vertex, tex_coord));
}
CompiledGeometryHandle RocketRenderingInterface::CompileGeometry(Vertex* vertices, int num_vertices, int* indices,
int num_indices, TextureHandle texture)
{
GR_DEBUG_SCOPE("libRocket::CompileGeometry");
auto* geom = new CompiledGeometry();
geom->vertex_buffer = gr_create_buffer(BufferType::Vertex, BufferUsageHint::Static);
gr_update_buffer_data(geom->vertex_buffer, num_vertices * sizeof(Vertex), reinterpret_cast<void*>(vertices));
geom->index_buffer = gr_create_buffer(BufferType::Index, BufferUsageHint::Static);
gr_update_buffer_data(geom->index_buffer, num_indices * sizeof(int), reinterpret_cast<void*>(indices));
geom->num_elements = num_indices;
geom->texture = get_texture(texture);
return reinterpret_cast<CompiledGeometryHandle>(geom);
}
void batching_init_buffer(primitive_batch_buffer *buffer, primitive_type prim_type, uint vertex_mask)
{
batching_setup_vertex_layout(&buffer->layout, vertex_mask);
buffer->buffer_num = gr_create_buffer(BufferType::Vertex, BufferUsageHint::Streaming);
buffer->buffer_ptr = NULL;
buffer->buffer_size = 0;
buffer->desired_buffer_size = 0;
buffer->prim_type = prim_type;
}
UniformBuffer::UniformBuffer(size_t element_size, size_t header_size) : _aligner(element_size, header_size) {
int offsetAlignment;
bool success = gr_get_property(gr_property::UNIFORM_BUFFER_OFFSET_ALIGNMENT, &offsetAlignment);
Assertion(success, "Uniform buffer usage requires a backend which allows to query the offset alignment!");
_aligner.setAlignment(static_cast<size_t>(offsetAlignment));
// This uses Dynamic since that matches our usage pattern the closest (update once and then use multiple times)
_buffer_obj = gr_create_buffer(BufferType::Uniform, BufferUsageHint::Dynamic);
Assertion(_buffer_obj >= 0, "Creation of buffer object failed!");
}
