file_t::file_t(atma::string const& filename, file_access_mask_t access)
: filename_(filename)
, access_(access)
, filesize_()
, handle_{fopen(filename.c_str(), fa[(uint)access]), [](FILE* handle) {
if (handle)
fclose(handle);
}}
{
if (handle_ == nullptr)
return;
// get filesize
fseek(handle_.get(), 0, SEEK_END);
filesize_ = ftell(handle_.get());
fseek(handle_.get(), 0, SEEK_SET);
}
compute_shader_t::compute_shader_t(renderer_ptr const& renderer, atma::string const& path, void const* data, size_t data_size, bool precompiled, atma::string const& entrypoint)
: rndr_(renderer)
{
if (precompiled)
{
ATMA_ENSURE_IS(S_OK, D3DCreateBlob(data_size, d3d_blob_.assign()));
memcpy(d3d_blob_->GetBufferPointer(), data, data_size);
}
else
{
platform::d3d_blob_ptr errors;
D3DCompile(data, data_size, path.c_str(), nullptr, D3D_COMPILE_STANDARD_FILE_INCLUDE, entrypoint.c_str(), "cs_5_0", D3DCOMPILE_PREFER_FLOW_CONTROL | D3DCOMPILE_DEBUG | D3DCOMPILE_SKIP_OPTIMIZATION, 0, d3d_blob_.assign(), errors.assign());
if (errors.get())
{
SHINY_ERROR("compute-shader errors:\n", (char*)errors->GetBufferPointer());
ATMA_HALT("bad compute-shader");
}
}
auto const& device = rndr_->d3d_device();
ATMA_ENSURE_IS(S_OK, device->CreateComputeShader(d3d_blob_->GetBufferPointer(), d3d_blob_->GetBufferSize(), nullptr, d3d_cs_.assign()));
}