79416a8b96
Add a `.data<T>()` method that retrieves a mutable span. This is useful more and more as we change to filling in vertex buffer data arrays directly, and compared to raw pointers it's safer too because of asserts in debug builds. Pull Request: https://projects.blender.org/blender/blender/pulls/123338
61 lines
1.7 KiB
C++
61 lines
1.7 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 = vbo.data<VBOType>();
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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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