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/* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup draw_engine
*/
#include "DRW_render.h"
#include "DNA_mesh_types.h"
#include "DNA_pointcloud_types.h"
#include "BLI_math_vector.hh"
#include "BLI_span.hh"
#include "GPU_batch.h"
#include "BKE_attribute.hh"
#include "BKE_curves.hh"
#include "BKE_duplilist.h"
#include "BKE_geometry_set.hh"
#include "draw_cache_extract.hh"
#include "draw_cache_impl.h"
#include "overlay_private.hh"
void OVERLAY_viewer_attribute_cache_init(OVERLAY_Data *vedata)
{
OVERLAY_PassList *psl = vedata->psl;
OVERLAY_PrivateData *pd = vedata->stl->pd;
const DRWState state = DRW_STATE_WRITE_COLOR | DRW_STATE_DEPTH_LESS_EQUAL |
DRW_STATE_BLEND_ALPHA;
DRW_PASS_CREATE(psl->attribute_ps, state | pd->clipping_state);
GPUShader *mesh_sh = OVERLAY_shader_viewer_attribute_mesh();
GPUShader *pointcloud_sh = OVERLAY_shader_viewer_attribute_pointcloud();
GPUShader *curve_sh = OVERLAY_shader_viewer_attribute_curve();
GPUShader *curves_sh = OVERLAY_shader_viewer_attribute_curves();
GPUShader *uniform_sh = OVERLAY_shader_uniform_color();
GPUShader *uniform_pointcloud_sh = OVERLAY_shader_uniform_color_pointcloud();
pd->viewer_attribute_mesh_grp = DRW_shgroup_create(mesh_sh, psl->attribute_ps);
pd->viewer_attribute_pointcloud_grp = DRW_shgroup_create(pointcloud_sh, psl->attribute_ps);
pd->viewer_attribute_curve_grp = DRW_shgroup_create(curve_sh, psl->attribute_ps);
pd->viewer_attribute_curves_grp = DRW_shgroup_create(curves_sh, psl->attribute_ps);
pd->viewer_attribute_instance_grp = DRW_shgroup_create(uniform_sh, psl->attribute_ps);
pd->viewer_attribute_instance_pointcloud_grp = DRW_shgroup_create(uniform_pointcloud_sh,
psl->attribute_ps);
}
static void populate_cache_for_instance(Object &object,
OVERLAY_PrivateData &pd,
const DupliObject &dupli_object,
const float opacity)
{
using namespace blender;
using namespace blender::bke;
const GeometrySet &base_geometry = *dupli_object.preview_base_geometry;
const InstancesComponent &instances =
*base_geometry.get_component_for_read<InstancesComponent>();
const AttributeAccessor instance_attributes = *instances.attributes();
const VArray attribute = instance_attributes.lookup<ColorGeometry4f>(".viewer");
if (!attribute) {
return;
}
ColorGeometry4f color = attribute.get(dupli_object.preview_instance_index);
color.a *= opacity;
switch (object.type) {
case OB_MESH: {
{
DRWShadingGroup *sub_grp = DRW_shgroup_create_sub(pd.viewer_attribute_instance_grp);
DRW_shgroup_uniform_vec4_copy(sub_grp, "ucolor", color);
GPUBatch *batch = DRW_cache_mesh_surface_get(&object);
DRW_shgroup_call(sub_grp, batch, &object);
}
if (GPUBatch *batch = DRW_cache_mesh_loose_edges_get(&object)) {
DRWShadingGroup *sub_grp = DRW_shgroup_create_sub(pd.viewer_attribute_instance_grp);
DRW_shgroup_uniform_vec4_copy(sub_grp, "ucolor", color);
DRW_shgroup_call(sub_grp, batch, &object);
}
break;
}
case OB_POINTCLOUD: {
DRWShadingGroup *sub_grp = DRW_shgroup_pointcloud_create_sub(
&object, pd.viewer_attribute_pointcloud_grp, nullptr);
DRW_shgroup_uniform_vec4_copy(sub_grp, "ucolor", color);
break;
}
case OB_CURVES_LEGACY: {
DRWShadingGroup *sub_grp = DRW_shgroup_create_sub(pd.viewer_attribute_instance_grp);
DRW_shgroup_uniform_vec4_copy(sub_grp, "ucolor", color);
GPUBatch *batch = DRW_cache_curve_edge_wire_get(&object);
DRW_shgroup_call_obmat(sub_grp, batch, object.object_to_world);
break;
}
case OB_CURVES: {
/* Not supported yet because instances of this type are currently drawn as legacy curves.
*/
break;
}
}
}
static void populate_cache_for_geometry(Object &object,
OVERLAY_PrivateData &pd,
const float opacity)
{
using namespace blender;
using namespace blender::bke;
switch (object.type) {
case OB_MESH: {
Mesh *mesh = static_cast<Mesh *>(object.data);
if (mesh->attributes().contains(".viewer")) {
GPUBatch *batch = DRW_cache_mesh_surface_viewer_attribute_get(&object);
DRW_shgroup_uniform_float_copy(pd.viewer_attribute_mesh_grp, "opacity", opacity);
DRW_shgroup_call(pd.viewer_attribute_mesh_grp, batch, &object);
}
break;
}
case OB_POINTCLOUD: {
PointCloud *pointcloud = static_cast<PointCloud *>(object.data);
if (pointcloud->attributes().contains(".viewer")) {
GPUVertBuf **vertbuf = DRW_pointcloud_evaluated_attribute(pointcloud, ".viewer");
DRWShadingGroup *grp = DRW_shgroup_pointcloud_create_sub(
&object, pd.viewer_attribute_pointcloud_grp, nullptr);
DRW_shgroup_uniform_float_copy(grp, "opacity", opacity);
DRW_shgroup_buffer_texture_ref(grp, "attribute_tx", vertbuf);
}
break;
}
case OB_CURVES_LEGACY: {
Curve *curve = static_cast<Curve *>(object.data);
const bke::CurvesGeometry &curves = bke::CurvesGeometry::wrap(curve->curve_eval->geometry);
if (curves.attributes().contains(".viewer")) {
GPUBatch *batch = DRW_cache_curve_edge_wire_viewer_attribute_get(&object);
DRW_shgroup_uniform_float_copy(pd.viewer_attribute_curve_grp, "opacity", opacity);
DRW_shgroup_call_obmat(pd.viewer_attribute_curve_grp, batch, object.object_to_world);
}
break;
}
case OB_CURVES: {
Curves *curves_id = static_cast<Curves *>(object.data);
const bke::CurvesGeometry &curves = bke::CurvesGeometry::wrap(curves_id->geometry);
if (curves.attributes().contains(".viewer")) {
bool is_point_domain;
GPUVertBuf **texture = DRW_curves_texture_for_evaluated_attribute(
curves_id, ".viewer", &is_point_domain);
DRWShadingGroup *grp = DRW_shgroup_curves_create_sub(
&object, pd.viewer_attribute_curves_grp, nullptr);
DRW_shgroup_uniform_float_copy(pd.viewer_attribute_curves_grp, "opacity", opacity);
DRW_shgroup_uniform_bool_copy(grp, "is_point_domain", is_point_domain);
DRW_shgroup_buffer_texture(grp, "color_tx", *texture);
}
break;
}
}
}
void OVERLAY_viewer_attribute_cache_populate(OVERLAY_Data *vedata, Object *object)
{
OVERLAY_PrivateData *pd = vedata->stl->pd;
const float opacity = vedata->stl->pd->overlay.viewer_attribute_opacity;
DupliObject *dupli_object = DRW_object_get_dupli(object);
if (dupli_object->preview_instance_index >= 0) {
const InstancesComponent &instances =
*dupli_object->preview_base_geometry->get_component_for_read<InstancesComponent>();
if (instances.attributes()->contains(".viewer")) {
populate_cache_for_instance(*object, *pd, *dupli_object, opacity);
return;
}
}
populate_cache_for_geometry(*object, *pd, opacity);
}
void OVERLAY_viewer_attribute_draw(OVERLAY_Data *vedata)
{
OVERLAY_PassList *psl = vedata->psl;
DRW_draw_pass(psl->attribute_ps);
}
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