diff options
author | Brecht Van Lommel <brecht@blender.org> | 2022-08-20 14:42:10 +0300 |
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committer | Brecht Van Lommel <brecht@blender.org> | 2022-08-29 20:45:58 +0300 |
commit | 810e7c032ceb324a51440aae1be5af506c0b9cfb (patch) | |
tree | 4ee9605eb0c1795ab2cd068a7c3feca6673bacae /source/blender/render/intern/initrender.cc | |
parent | ff27457240950e51753ff56181841a14d1bf6b11 (diff) |
Cleanup: move part of render module to C++
Diffstat (limited to 'source/blender/render/intern/initrender.cc')
-rw-r--r-- | source/blender/render/intern/initrender.cc | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/source/blender/render/intern/initrender.cc b/source/blender/render/intern/initrender.cc new file mode 100644 index 00000000000..a2a6a5815a0 --- /dev/null +++ b/source/blender/render/intern/initrender.cc @@ -0,0 +1,221 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later + * Copyright 2001-2002 NaN Holding BV. All rights reserved. */ + +/** \file + * \ingroup render + */ + +/* Global includes */ + +#include <math.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "MEM_guardedalloc.h" + +#include "BLI_blenlib.h" +#include "BLI_ghash.h" +#include "BLI_math.h" +#include "BLI_utildefines.h" + +#include "DNA_camera_types.h" + +#include "BKE_camera.h" + +/* this module */ +#include "pipeline.h" +#include "render_types.h" + +/* ****************** MASKS and LUTS **************** */ + +static float filt_quadratic(float x) +{ + if (x < 0.0f) { + x = -x; + } + if (x < 0.5f) { + return 0.75f - (x * x); + } + if (x < 1.5f) { + return 0.50f * (x - 1.5f) * (x - 1.5f); + } + return 0.0f; +} + +static float filt_cubic(float x) +{ + float x2 = x * x; + + if (x < 0.0f) { + x = -x; + } + + if (x < 1.0f) { + return 0.5f * x * x2 - x2 + 2.0f / 3.0f; + } + if (x < 2.0f) { + return (2.0f - x) * (2.0f - x) * (2.0f - x) / 6.0f; + } + return 0.0f; +} + +static float filt_catrom(float x) +{ + float x2 = x * x; + + if (x < 0.0f) { + x = -x; + } + if (x < 1.0f) { + return 1.5f * x2 * x - 2.5f * x2 + 1.0f; + } + if (x < 2.0f) { + return -0.5f * x2 * x + 2.5f * x2 - 4.0f * x + 2.0f; + } + return 0.0f; +} + +static float filt_mitchell(float x) /* Mitchell & Netravali's two-param cubic */ +{ + float b = 1.0f / 3.0f, c = 1.0f / 3.0f; + float p0 = (6.0f - 2.0f * b) / 6.0f; + float p2 = (-18.0f + 12.0f * b + 6.0f * c) / 6.0f; + float p3 = (12.0f - 9.0f * b - 6.0f * c) / 6.0f; + float q0 = (8.0f * b + 24.0f * c) / 6.0f; + float q1 = (-12.0f * b - 48.0f * c) / 6.0f; + float q2 = (6.0f * b + 30.0f * c) / 6.0f; + float q3 = (-b - 6.0f * c) / 6.0f; + + if (x < -2.0f) { + return 0.0f; + } + if (x < -1.0f) { + return (q0 - x * (q1 - x * (q2 - x * q3))); + } + if (x < 0.0f) { + return (p0 + x * x * (p2 - x * p3)); + } + if (x < 1.0f) { + return (p0 + x * x * (p2 + x * p3)); + } + if (x < 2.0f) { + return (q0 + x * (q1 + x * (q2 + x * q3))); + } + return 0.0f; +} + +float RE_filter_value(int type, float x) +{ + float gaussfac = 1.6f; + + x = fabsf(x); + + switch (type) { + case R_FILTER_BOX: + if (x > 1.0f) { + return 0.0f; + } + return 1.0f; + + case R_FILTER_TENT: + if (x > 1.0f) { + return 0.0f; + } + return 1.0f - x; + + case R_FILTER_GAUSS: { + const float two_gaussfac2 = 2.0f * gaussfac * gaussfac; + x *= 3.0f * gaussfac; + return 1.0f / sqrtf((float)M_PI * two_gaussfac2) * expf(-x * x / two_gaussfac2); + } + + case R_FILTER_MITCH: + return filt_mitchell(x * gaussfac); + + case R_FILTER_QUAD: + return filt_quadratic(x * gaussfac); + + case R_FILTER_CUBIC: + return filt_cubic(x * gaussfac); + + case R_FILTER_CATROM: + return filt_catrom(x * gaussfac); + } + return 0.0f; +} + +/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ + +struct Object *RE_GetCamera(Render *re) +{ + Object *camera = re->camera_override ? re->camera_override : re->scene->camera; + return BKE_camera_multiview_render(re->scene, camera, re->viewname); +} + +void RE_SetOverrideCamera(Render *re, Object *cam_ob) +{ + re->camera_override = cam_ob; +} + +void RE_SetCamera(Render *re, const Object *cam_ob) +{ + CameraParams params; + + /* setup parameters */ + BKE_camera_params_init(¶ms); + BKE_camera_params_from_object(¶ms, cam_ob); + BKE_camera_multiview_params(&re->r, ¶ms, cam_ob, re->viewname); + + /* Compute matrix, view-plane, etc. */ + BKE_camera_params_compute_viewplane(¶ms, re->winx, re->winy, re->r.xasp, re->r.yasp); + BKE_camera_params_compute_matrix(¶ms); + + /* extract results */ + copy_m4_m4(re->winmat, params.winmat); + re->clip_start = params.clip_start; + re->clip_end = params.clip_end; + re->viewplane = params.viewplane; +} + +void RE_GetCameraWindow(struct Render *re, const struct Object *camera, float r_winmat[4][4]) +{ + RE_SetCamera(re, camera); + copy_m4_m4(r_winmat, re->winmat); +} + +void RE_GetCameraWindowWithOverscan(const struct Render *re, float overscan, float r_winmat[4][4]) +{ + CameraParams params; + params.is_ortho = re->winmat[3][3] != 0.0f; + params.clip_start = re->clip_start; + params.clip_end = re->clip_end; + params.viewplane = re->viewplane; + + overscan *= max_ff(BLI_rctf_size_x(¶ms.viewplane), BLI_rctf_size_y(¶ms.viewplane)); + + params.viewplane.xmin -= overscan; + params.viewplane.xmax += overscan; + params.viewplane.ymin -= overscan; + params.viewplane.ymax += overscan; + BKE_camera_params_compute_matrix(¶ms); + copy_m4_m4(r_winmat, params.winmat); +} + +void RE_GetCameraModelMatrix(const Render *re, const struct Object *camera, float r_modelmat[4][4]) +{ + BKE_camera_multiview_model_matrix(&re->r, camera, re->viewname, r_modelmat); +} + +void RE_GetViewPlane(Render *re, rctf *r_viewplane, rcti *r_disprect) +{ + *r_viewplane = re->viewplane; + + /* make disprect zero when no border render, is needed to detect changes in 3d view render */ + if (re->r.mode & R_BORDER) { + *r_disprect = re->disprect; + } + else { + BLI_rcti_init(r_disprect, 0, 0, 0, 0); + } +} |