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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2021 Blender Foundation.
*/
/** \file
* \ingroup eevee
*/
#include <array>
#include "DRW_render.h"
#include "DNA_camera_types.h"
#include "DNA_view3d_types.h"
#include "BKE_camera.h"
#include "DEG_depsgraph_query.h"
#include "RE_pipeline.h"
#include "eevee_camera.hh"
#include "eevee_instance.hh"
namespace blender::eevee {
/* -------------------------------------------------------------------- */
/** \name eCameraType
* \{ */
static eCameraType from_camera(const ::Camera *camera)
{
switch (camera->type) {
default:
case CAM_PERSP:
return CAMERA_PERSP;
case CAM_ORTHO:
return CAMERA_ORTHO;
case CAM_PANO:
switch (camera->panorama_type) {
default:
case CAM_PANO_EQUIRECTANGULAR:
return CAMERA_PANO_EQUIRECT;
case CAM_PANO_FISHEYE_EQUIDISTANT:
return CAMERA_PANO_EQUIDISTANT;
case CAM_PANO_FISHEYE_EQUISOLID:
return CAMERA_PANO_EQUISOLID;
case CAM_PANO_MIRRORBALL:
return CAMERA_PANO_MIRROR;
}
}
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Camera
* \{ */
void Camera::init(void)
{
const Object *camera_eval = inst_.camera_eval_object;
synced_ = false;
/* Swap! */
data_id_ = !data_id_;
CameraData &data = data_[data_id_];
if (camera_eval) {
const ::Camera *cam = reinterpret_cast<const ::Camera *>(camera_eval->data);
data.type = from_camera(cam);
}
else if (inst_.drw_view) {
data.type = DRW_view_is_persp_get(inst_.drw_view) ? CAMERA_PERSP : CAMERA_ORTHO;
}
else {
/* Lightprobe baking. */
data.type = CAMERA_PERSP;
}
}
void Camera::sync(void)
{
const Object *camera_eval = inst_.camera_eval_object;
CameraData &data = data_[data_id_];
data.filter_size = inst_.scene->r.gauss;
if (inst_.drw_view) {
DRW_view_viewmat_get(inst_.drw_view, data.viewmat.ptr(), false);
DRW_view_viewmat_get(inst_.drw_view, data.viewinv.ptr(), true);
DRW_view_winmat_get(inst_.drw_view, data.winmat.ptr(), false);
DRW_view_winmat_get(inst_.drw_view, data.wininv.ptr(), true);
DRW_view_persmat_get(inst_.drw_view, data.persmat.ptr(), false);
DRW_view_persmat_get(inst_.drw_view, data.persinv.ptr(), true);
DRW_view_camtexco_get(inst_.drw_view, data.uv_scale);
}
else if (inst_.render) {
/* TODO(fclem) Overscan */
// RE_GetCameraWindowWithOverscan(inst_.render->re, g_data->overscan, data.winmat);
RE_GetCameraWindow(inst_.render->re, camera_eval, data.winmat.ptr());
RE_GetCameraModelMatrix(inst_.render->re, camera_eval, data.viewinv.ptr());
invert_m4_m4(data.viewmat.ptr(), data.viewinv.ptr());
invert_m4_m4(data.wininv.ptr(), data.winmat.ptr());
mul_m4_m4m4(data.persmat.ptr(), data.winmat.ptr(), data.viewmat.ptr());
invert_m4_m4(data.persinv.ptr(), data.persmat.ptr());
data.uv_scale = float2(1.0f);
data.uv_bias = float2(0.0f);
}
else {
data.viewmat = float4x4::identity();
data.viewinv = float4x4::identity();
perspective_m4(data.winmat.ptr(), -0.1f, 0.1f, -0.1f, 0.1f, 0.1f, 1.0f);
data.wininv = data.winmat.inverted();
data.persmat = data.winmat * data.viewmat;
data.persinv = data.persmat.inverted();
}
if (camera_eval) {
const ::Camera *cam = reinterpret_cast<const ::Camera *>(camera_eval->data);
data.clip_near = cam->clip_start;
data.clip_far = cam->clip_end;
data.fisheye_fov = cam->fisheye_fov;
data.fisheye_lens = cam->fisheye_lens;
data.equirect_bias.x = -cam->longitude_min + M_PI_2;
data.equirect_bias.y = -cam->latitude_min + M_PI_2;
data.equirect_scale.x = cam->longitude_min - cam->longitude_max;
data.equirect_scale.y = cam->latitude_min - cam->latitude_max;
/* Combine with uv_scale/bias to avoid doing extra computation. */
data.equirect_bias += data.uv_bias * data.equirect_scale;
data.equirect_scale *= data.uv_scale;
data.equirect_scale_inv = 1.0f / data.equirect_scale;
}
else if (inst_.drw_view) {
data.clip_near = DRW_view_near_distance_get(inst_.drw_view);
data.clip_far = DRW_view_far_distance_get(inst_.drw_view);
data.fisheye_fov = data.fisheye_lens = -1.0f;
data.equirect_bias = float2(0.0f);
data.equirect_scale = float2(0.0f);
}
data_[data_id_].push_update();
synced_ = true;
/* Detect changes in parameters. */
if (data_[data_id_] != data_[!data_id_]) {
inst_.sampling.reset();
}
}
/** \} */
} // namespace blender::eevee
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