ee39f43bf0
Same fix as #142265, but for point clouds. Pull Request: https://projects.blender.org/blender/blender/pulls/142396
126 lines
4.0 KiB
C++
126 lines
4.0 KiB
C++
/* SPDX-FileCopyrightText: 2017 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 draw
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*/
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#include "DNA_pointcloud_types.h"
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#include "GPU_batch.hh"
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#include "GPU_material.hh"
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#include "GPU_shader.hh"
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#include "GPU_texture.hh"
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#include "GPU_vertex_buffer.hh"
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#include "DRW_render.hh"
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#include "draw_cache_impl.hh"
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#include "draw_common.hh"
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#include "draw_common_c.hh"
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#include "draw_context_private.hh"
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#include "draw_pointcloud_private.hh"
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/* For drw_curves_get_attribute_sampler_name. */
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#include "draw_curves_private.hh"
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namespace blender::draw {
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struct PointCloudModule {
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gpu::VertBuf *dummy_vbo = create_dummy_vbo();
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~PointCloudModule()
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{
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GPU_VERTBUF_DISCARD_SAFE(dummy_vbo);
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}
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private:
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gpu::VertBuf *create_dummy_vbo()
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{
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GPUVertFormat format = {0};
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uint dummy_id = GPU_vertformat_attr_add(
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&format, "dummy", gpu::VertAttrType::SFLOAT_32_32_32_32);
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gpu::VertBuf *vbo = GPU_vertbuf_create_with_format_ex(
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format, GPU_USAGE_STATIC | GPU_USAGE_FLAG_BUFFER_TEXTURE_ONLY);
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const float vert[4] = {0.0f, 0.0f, 0.0f, 0.0f};
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GPU_vertbuf_data_alloc(*vbo, 1);
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GPU_vertbuf_attr_fill(vbo, dummy_id, vert);
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return vbo;
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}
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};
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void DRW_pointcloud_init(DRWData *drw_data)
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{
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if (drw_data == nullptr) {
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drw_data = drw_get().data;
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}
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if (drw_data->pointcloud_module == nullptr) {
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drw_data->pointcloud_module = MEM_new<PointCloudModule>("PointCloudModule");
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}
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}
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void DRW_pointcloud_module_free(PointCloudModule *pointcloud_module)
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{
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MEM_delete(pointcloud_module);
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}
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template<typename PassT>
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gpu::Batch *pointcloud_sub_pass_setup_implementation(PassT &sub_ps,
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Object *object,
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GPUMaterial *gpu_material)
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{
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BLI_assert(object->type == OB_POINTCLOUD);
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PointCloud &pointcloud = DRW_object_get_data_for_drawing<PointCloud>(*object);
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/* An empty point cloud should never result in a draw-call. However, the buffer binding commands
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* will still be executed. In this case, in order to avoid assertion, we bind dummy VBOs. */
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bool is_empty = pointcloud.totpoint == 0;
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PointCloudModule &module = *drw_get().data->pointcloud_module;
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/* Ensure we have no unbound resources.
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* Required for Vulkan.
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* Fixes issues with certain GL drivers not drawing anything. */
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sub_ps.bind_texture("u", module.dummy_vbo);
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sub_ps.bind_texture("au", module.dummy_vbo);
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sub_ps.bind_texture("a", module.dummy_vbo);
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sub_ps.bind_texture("c", module.dummy_vbo);
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sub_ps.bind_texture("ac", module.dummy_vbo);
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gpu::VertBuf *pos_rad_buf = pointcloud_position_and_radius_get(&pointcloud);
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sub_ps.bind_texture("ptcloud_pos_rad_tx", is_empty ? module.dummy_vbo : pos_rad_buf);
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if (gpu_material != nullptr) {
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ListBase gpu_attrs = GPU_material_attributes(gpu_material);
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LISTBASE_FOREACH (GPUMaterialAttribute *, gpu_attr, &gpu_attrs) {
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char sampler_name[32];
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/** NOTE: Reusing curve attribute function. */
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drw_curves_get_attribute_sampler_name(gpu_attr->name, sampler_name);
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gpu::VertBuf **attribute_buf = DRW_pointcloud_evaluated_attribute(&pointcloud,
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gpu_attr->name);
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sub_ps.bind_texture(sampler_name,
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(attribute_buf && !is_empty) ? attribute_buf : &module.dummy_vbo);
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}
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}
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gpu::Batch *geom = pointcloud_surface_get(&pointcloud);
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return geom;
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}
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gpu::Batch *pointcloud_sub_pass_setup(PassMain::Sub &sub_ps,
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Object *object,
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GPUMaterial *gpu_material)
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{
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return pointcloud_sub_pass_setup_implementation(sub_ps, object, gpu_material);
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}
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gpu::Batch *pointcloud_sub_pass_setup(PassSimple::Sub &sub_ps,
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Object *object,
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GPUMaterial *gpu_material)
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{
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return pointcloud_sub_pass_setup_implementation(sub_ps, object, gpu_material);
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}
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} // namespace blender::draw
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