fe76d8c946
Now that all relevant code is C++, the indirection from the C struct `GPUVertBuf` to the C++ `blender::gpu::VertBuf` class just adds complexity and necessitates a wrapper API, making more cleanups like use of RAII or other C++ types more difficult. This commit replaces the C wrapper structs with direct use of the vertex and index buffer base classes. In C++ we can choose which parts of a class are private, so we don't risk exposing too many implementation details here. Pull Request: https://projects.blender.org/blender/blender/pulls/119825
62 lines
1.8 KiB
C++
62 lines
1.8 KiB
C++
/* SPDX-FileCopyrightText: 2005 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup gpu
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*/
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#include "BLI_array_utils.hh"
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#include "BKE_attribute_math.hh"
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#include "GPU_vertex_buffer.hh"
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#include "attribute_convert.hh"
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namespace blender::draw {
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GPUVertFormat init_format_for_attribute(const eCustomDataType data_type,
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const StringRefNull vbo_name)
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{
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GPUVertFormat format{};
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bke::attribute_math::convert_to_static_type(data_type, [&](auto dummy) {
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using T = decltype(dummy);
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using Converter = AttributeConverter<T>;
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if constexpr (!std::is_void_v<typename Converter::VBOType>) {
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GPU_vertformat_attr_add(&format,
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vbo_name.c_str(),
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Converter::gpu_component_type,
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Converter::gpu_component_len,
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Converter::gpu_fetch_mode);
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}
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});
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return format;
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}
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void vertbuf_data_extract_direct(const GSpan attribute, gpu::VertBuf &vbo)
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{
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bke::attribute_math::convert_to_static_type(attribute.type(), [&](auto dummy) {
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using T = decltype(dummy);
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using Converter = AttributeConverter<T>;
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using VBOType = typename Converter::VBOType;
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if constexpr (!std::is_void_v<VBOType>) {
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const Span<T> src = attribute.typed<T>();
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MutableSpan<VBOType> data(static_cast<VBOType *>(GPU_vertbuf_get_data(&vbo)),
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attribute.size());
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if constexpr (std::is_same_v<T, VBOType>) {
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array_utils::copy(src, data);
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}
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else {
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threading::parallel_for(src.index_range(), 8192, [&](const IndexRange range) {
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for (const int i : range) {
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data[i] = Converter::convert(src[i]);
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}
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});
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}
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}
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});
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}
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} // namespace blender::draw
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