450 lines
16 KiB
C++
450 lines
16 KiB
C++
/*
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* Modern effects for a modern Streamer
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* Copyright (C) 2017 Michael Fabian Dirks
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "filter-transform.h"
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#include "strings.h"
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extern "C" {
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#pragma warning (push)
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#pragma warning (disable: 4201)
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#include "libobs/util/platform.h"
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#include "libobs/graphics/graphics.h"
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#include "libobs/graphics/matrix4.h"
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#pragma warning (pop)
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}
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static const float PI = 3.1415926535897932384626433832795f;
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static const float farZ = 2097152.0f; // 2 pow 21
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static const float nearZ = 1.0f / farZ;
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static const float valueLimit = 65536.0f;
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enum RotationOrder : int64_t {
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XYZ,
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XZY,
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YXZ,
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YZX,
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ZXY,
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ZYX,
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};
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Filter::Transform::Transform() {
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memset(&sourceInfo, 0, sizeof(obs_source_info));
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sourceInfo.id = "obs-stream-effects-filter-transform";
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sourceInfo.type = OBS_SOURCE_TYPE_FILTER;
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sourceInfo.output_flags = OBS_SOURCE_VIDEO;
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sourceInfo.get_name = get_name;
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sourceInfo.get_defaults = get_defaults;
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sourceInfo.get_properties = get_properties;
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sourceInfo.create = create;
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sourceInfo.destroy = destroy;
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sourceInfo.update = update;
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sourceInfo.activate = activate;
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sourceInfo.deactivate = deactivate;
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sourceInfo.show = show;
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sourceInfo.hide = hide;
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sourceInfo.video_tick = video_tick;
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sourceInfo.video_render = video_render;
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obs_register_source(&sourceInfo);
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}
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Filter::Transform::~Transform() {
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}
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const char* Filter::Transform::get_name(void *) {
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return P_TRANSLATE(P_FILTER_TRANSFORM);
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}
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void Filter::Transform::get_defaults(obs_data_t *data) {
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obs_data_set_default_int(data, P_FILTER_TRANSFORM_CAMERA, 0);
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obs_data_set_default_double(data, P_FILTER_TRANSFORM_CAMERA_FIELDOFVIEW, 90.0);
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obs_data_set_default_double(data, P_FILTER_TRANSFORM_POSITION_X, 0);
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obs_data_set_default_double(data, P_FILTER_TRANSFORM_POSITION_Y, 0);
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obs_data_set_default_double(data, P_FILTER_TRANSFORM_POSITION_Z, 0);
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obs_data_set_default_double(data, P_FILTER_TRANSFORM_SCALE_X, 100);
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obs_data_set_default_double(data, P_FILTER_TRANSFORM_SCALE_Y, 100);
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obs_data_set_default_int(data, P_FILTER_TRANSFORM_ROTATION_ORDER, RotationOrder::ZXY); //ZXY
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obs_data_set_default_double(data, P_FILTER_TRANSFORM_ROTATION_X, 0);
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obs_data_set_default_double(data, P_FILTER_TRANSFORM_ROTATION_Y, 0);
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obs_data_set_default_double(data, P_FILTER_TRANSFORM_ROTATION_Z, 0);
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}
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obs_properties_t * Filter::Transform::get_properties(void *) {
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obs_properties_t *pr = obs_properties_create();
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obs_property_t* p = NULL;
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p = obs_properties_add_list(pr, P_FILTER_TRANSFORM_CAMERA, P_TRANSLATE(P_FILTER_TRANSFORM_CAMERA),
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OBS_COMBO_TYPE_LIST, OBS_COMBO_FORMAT_INT);
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obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_FILTER_TRANSFORM_CAMERA)));
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obs_property_list_add_int(p, P_TRANSLATE(P_FILTER_TRANSFORM_CAMERA_ORTHOGRAPHIC), 0);
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obs_property_list_add_int(p, P_TRANSLATE(P_FILTER_TRANSFORM_CAMERA_PERSPECTIVE), 1);
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p = obs_properties_add_float_slider(pr, P_FILTER_TRANSFORM_CAMERA_FIELDOFVIEW, P_TRANSLATE(P_FILTER_TRANSFORM_CAMERA_FIELDOFVIEW),
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1.0, 179.0, 0.01);
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obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_FILTER_TRANSFORM_CAMERA_FIELDOFVIEW)));
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{
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std::pair<const char*, const char*> entries[] = {
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std::make_pair(P_FILTER_TRANSFORM_POSITION_X, P_DESC(P_FILTER_TRANSFORM_POSITION_X)),
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std::make_pair(P_FILTER_TRANSFORM_POSITION_Y, P_DESC(P_FILTER_TRANSFORM_POSITION_Y)),
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std::make_pair(P_FILTER_TRANSFORM_POSITION_Z, P_DESC(P_FILTER_TRANSFORM_POSITION_Z)),
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std::make_pair(P_FILTER_TRANSFORM_SCALE_X, P_DESC(P_FILTER_TRANSFORM_SCALE_X)),
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std::make_pair(P_FILTER_TRANSFORM_SCALE_Y, P_DESC(P_FILTER_TRANSFORM_SCALE_Y)),
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};
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for (auto kv : entries) {
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p = obs_properties_add_float(pr, kv.first, P_TRANSLATE(kv.first),
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-valueLimit, valueLimit, 0.01);
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obs_property_set_long_description(p, P_TRANSLATE(kv.second));
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}
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}
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p = obs_properties_add_list(pr, P_FILTER_TRANSFORM_ROTATION_ORDER, P_TRANSLATE(P_FILTER_TRANSFORM_ROTATION_ORDER),
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OBS_COMBO_TYPE_LIST, OBS_COMBO_FORMAT_INT);
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obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_FILTER_TRANSFORM_ROTATION_ORDER)));
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obs_property_list_add_int(p, P_TRANSLATE(P_FILTER_TRANSFORM_ROTATION_ORDER_XYZ), RotationOrder::XYZ);
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obs_property_list_add_int(p, P_TRANSLATE(P_FILTER_TRANSFORM_ROTATION_ORDER_XZY), RotationOrder::XZY);
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obs_property_list_add_int(p, P_TRANSLATE(P_FILTER_TRANSFORM_ROTATION_ORDER_YXZ), RotationOrder::YXZ);
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obs_property_list_add_int(p, P_TRANSLATE(P_FILTER_TRANSFORM_ROTATION_ORDER_YZX), RotationOrder::YZX);
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obs_property_list_add_int(p, P_TRANSLATE(P_FILTER_TRANSFORM_ROTATION_ORDER_ZXY), RotationOrder::ZXY);
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obs_property_list_add_int(p, P_TRANSLATE(P_FILTER_TRANSFORM_ROTATION_ORDER_ZYX), RotationOrder::ZYX);
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{
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std::pair<const char*, const char*> entries[] = {
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std::make_pair(P_FILTER_TRANSFORM_ROTATION_X, P_DESC(P_FILTER_TRANSFORM_ROTATION_X)),
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std::make_pair(P_FILTER_TRANSFORM_ROTATION_Y, P_DESC(P_FILTER_TRANSFORM_ROTATION_Y)),
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std::make_pair(P_FILTER_TRANSFORM_ROTATION_Z, P_DESC(P_FILTER_TRANSFORM_ROTATION_Z)),
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};
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for (auto kv : entries) {
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p = obs_properties_add_float_slider(pr, kv.first, P_TRANSLATE(kv.first),
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-180, 180, 0.01);
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obs_property_set_long_description(p, P_TRANSLATE(kv.second));
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}
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}
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return pr;
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}
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bool Filter::Transform::modified_properties(obs_properties_t *pr, obs_property_t *, obs_data_t *d) {
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switch (obs_data_get_int(d, P_FILTER_TRANSFORM_CAMERA)) {
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case 0:
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obs_property_set_visible(obs_properties_get(pr, P_FILTER_TRANSFORM_CAMERA_FIELDOFVIEW), false);
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obs_property_set_visible(obs_properties_get(pr, P_FILTER_TRANSFORM_POSITION_Z), false);
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break;
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case 1:
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obs_property_set_visible(obs_properties_get(pr, P_FILTER_TRANSFORM_CAMERA_FIELDOFVIEW), true);
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obs_property_set_visible(obs_properties_get(pr, P_FILTER_TRANSFORM_POSITION_Z), true);
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break;
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}
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return false;
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}
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void * Filter::Transform::create(obs_data_t *data, obs_source_t *source) {
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return new Instance(data, source);
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}
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void Filter::Transform::destroy(void *ptr) {
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delete reinterpret_cast<Instance*>(ptr);
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}
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uint32_t Filter::Transform::get_width(void *ptr) {
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return reinterpret_cast<Instance*>(ptr)->get_width();
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}
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uint32_t Filter::Transform::get_height(void *ptr) {
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return reinterpret_cast<Instance*>(ptr)->get_height();
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}
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void Filter::Transform::update(void *ptr, obs_data_t *data) {
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reinterpret_cast<Instance*>(ptr)->update(data);
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}
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void Filter::Transform::activate(void *ptr) {
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reinterpret_cast<Instance*>(ptr)->activate();
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}
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void Filter::Transform::deactivate(void *ptr) {
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reinterpret_cast<Instance*>(ptr)->deactivate();
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}
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void Filter::Transform::show(void *ptr) {
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reinterpret_cast<Instance*>(ptr)->show();
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}
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void Filter::Transform::hide(void *ptr) {
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reinterpret_cast<Instance*>(ptr)->hide();
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}
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void Filter::Transform::video_tick(void *ptr, float time) {
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reinterpret_cast<Instance*>(ptr)->video_tick(time);
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}
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void Filter::Transform::video_render(void *ptr, gs_effect_t *effect) {
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reinterpret_cast<Instance*>(ptr)->video_render(effect);
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}
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Filter::Transform::Instance::Instance(obs_data_t *data, obs_source_t *context)
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: m_sourceContext(context),
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m_isCameraOrthographic(true),
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m_cameraFieldOfView(90.0f),
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m_isMeshUpdateRequired(true),
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m_rotationOrder(RotationOrder::ZXY) {
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obs_enter_graphics();
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m_texRender = gs_texrender_create(GS_RGBA, GS_ZS_NONE);
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m_shapeRender = gs_texrender_create(GS_RGBA, GS_ZS_NONE);
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m_vertexHelper = new Helper::VertexBuffer(4);
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m_vertexHelper->set_uv_layers(1);
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m_vertexHelper->resize(4);
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obs_leave_graphics();
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update(data);
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}
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Filter::Transform::Instance::~Instance() {
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obs_enter_graphics();
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delete m_vertexHelper;
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gs_texrender_destroy(m_texRender);
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gs_texrender_destroy(m_shapeRender);
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obs_leave_graphics();
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}
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void Filter::Transform::Instance::update(obs_data_t *data) {
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// Camera
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m_isCameraOrthographic = obs_data_get_int(data, P_FILTER_TRANSFORM_CAMERA) == 0;
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m_cameraFieldOfView = (float)obs_data_get_double(data, P_FILTER_TRANSFORM_CAMERA_FIELDOFVIEW);
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// Source
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m_position.x = (float)obs_data_get_double(data, P_FILTER_TRANSFORM_POSITION_X) / 100.0f;
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m_position.y = (float)obs_data_get_double(data, P_FILTER_TRANSFORM_POSITION_Y) / 100.0f;
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m_position.z = (float)obs_data_get_double(data, P_FILTER_TRANSFORM_POSITION_Z) / 100.0f;
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m_scale.x = (float)obs_data_get_double(data, P_FILTER_TRANSFORM_SCALE_X) / 100.0f;
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m_scale.y = (float)obs_data_get_double(data, P_FILTER_TRANSFORM_SCALE_Y) / 100.0f;
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m_scale.z = 1.0;
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m_rotationOrder = (int)obs_data_get_int(data, P_FILTER_TRANSFORM_ROTATION_ORDER);
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m_rotation.x = (float)obs_data_get_double(data, P_FILTER_TRANSFORM_ROTATION_X) / 180.0f * PI;
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m_rotation.y = (float)obs_data_get_double(data, P_FILTER_TRANSFORM_ROTATION_Y) / 180.0f * PI;
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m_rotation.z = (float)obs_data_get_double(data, P_FILTER_TRANSFORM_ROTATION_Z) / 180.0f * PI;
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m_isMeshUpdateRequired = true;
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}
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uint32_t Filter::Transform::Instance::get_width() {
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return 0;
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}
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uint32_t Filter::Transform::Instance::get_height() {
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return 0;
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}
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void Filter::Transform::Instance::activate() {}
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void Filter::Transform::Instance::deactivate() {}
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void Filter::Transform::Instance::show() {}
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void Filter::Transform::Instance::hide() {}
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void Filter::Transform::Instance::video_tick(float) {}
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void Filter::Transform::Instance::video_render(gs_effect_t *paramEffect) {
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obs_source_t *parent = obs_filter_get_parent(m_sourceContext);
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obs_source_t *target = obs_filter_get_target(m_sourceContext);
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uint32_t
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baseW = obs_source_get_base_width(target),
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baseH = obs_source_get_base_height(target);
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// Skip rendering if our target, parent or context is not valid.
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if (!target || !parent || !m_sourceContext || !m_vertexBuffer || !m_texRender
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|| !m_shapeRender || !baseW || !baseH) {
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obs_source_skip_video_filter(m_sourceContext);
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return;
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}
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gs_effect_t *alphaEffect = obs_get_base_effect(OBS_EFFECT_DEFAULT);
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// Draw previous filters to texture.
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gs_texrender_reset(m_texRender);
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if (gs_texrender_begin(m_texRender, baseW, baseH)) {
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gs_ortho(0, (float)baseW, 0, (float)baseH, -1, 1);
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vec4 black;
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vec4_zero(&black);
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gs_clear(GS_CLEAR_COLOR | GS_CLEAR_DEPTH, &black, 0, 0);
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gs_set_cull_mode(GS_NEITHER);
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gs_reset_blend_state();
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gs_blend_function_separate(
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gs_blend_type::GS_BLEND_ONE,
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gs_blend_type::GS_BLEND_ZERO,
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gs_blend_type::GS_BLEND_ONE,
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gs_blend_type::GS_BLEND_ZERO);
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gs_enable_depth_test(false);
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gs_enable_stencil_test(false);
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gs_enable_stencil_write(false);
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gs_enable_color(true, true, true, true);
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if (obs_source_process_filter_begin(m_sourceContext, GS_RGBA, OBS_NO_DIRECT_RENDERING)) {
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obs_source_process_filter_end(m_sourceContext, paramEffect ? paramEffect : alphaEffect, baseW, baseH);
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} else {
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obs_source_skip_video_filter(m_sourceContext);
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}
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gs_texrender_end(m_texRender);
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} else {
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obs_source_skip_video_filter(m_sourceContext);
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return;
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}
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gs_texture* filterTexture = gs_texrender_get_texture(m_texRender);
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// Update Mesh
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if (m_isMeshUpdateRequired) {
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double_t aspectRatioX = double_t(baseW) / double_t(baseH),
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aspectRatioY = double_t(baseH) / double_t(baseW);
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if (baseW > baseH) {
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aspectRatioY = 1.0;
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} else {
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aspectRatioX = 1.0;
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}
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// Mesh
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matrix4 ident;
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matrix4_identity(&ident);
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matrix4_scale3f(&ident, &ident, (float)aspectRatioX, (float)aspectRatioY, 1.0);
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matrix4_scale(&ident, &ident, &m_scale);
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switch (m_rotationOrder) {
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case RotationOrder::XYZ: // XYZ
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matrix4_rotate_aa4f(&ident, &ident, 1, 0, 0, m_rotation.x);
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matrix4_rotate_aa4f(&ident, &ident, 0, 1, 0, m_rotation.y);
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matrix4_rotate_aa4f(&ident, &ident, 0, 0, 1, m_rotation.z);
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break;
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case RotationOrder::XZY: // XZY
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matrix4_rotate_aa4f(&ident, &ident, 1, 0, 0, m_rotation.x);
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matrix4_rotate_aa4f(&ident, &ident, 0, 0, 1, m_rotation.z);
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matrix4_rotate_aa4f(&ident, &ident, 0, 1, 0, m_rotation.y);
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break;
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case RotationOrder::YXZ: // YXZ
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matrix4_rotate_aa4f(&ident, &ident, 0, 1, 0, m_rotation.y);
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matrix4_rotate_aa4f(&ident, &ident, 1, 0, 0, m_rotation.x);
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matrix4_rotate_aa4f(&ident, &ident, 0, 0, 1, m_rotation.z);
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break;
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case RotationOrder::YZX: // YZX
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matrix4_rotate_aa4f(&ident, &ident, 0, 1, 0, m_rotation.y);
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matrix4_rotate_aa4f(&ident, &ident, 0, 0, 1, m_rotation.z);
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matrix4_rotate_aa4f(&ident, &ident, 1, 0, 0, m_rotation.x);
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break;
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case RotationOrder::ZXY: // ZXY
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matrix4_rotate_aa4f(&ident, &ident, 0, 0, 1, m_rotation.z);
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matrix4_rotate_aa4f(&ident, &ident, 1, 0, 0, m_rotation.x);
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matrix4_rotate_aa4f(&ident, &ident, 0, 1, 0, m_rotation.y);
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break;
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case RotationOrder::ZYX: // ZYX
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matrix4_rotate_aa4f(&ident, &ident, 0, 0, 1, m_rotation.z);
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matrix4_rotate_aa4f(&ident, &ident, 0, 1, 0, m_rotation.y);
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matrix4_rotate_aa4f(&ident, &ident, 1, 0, 0, m_rotation.x);
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break;
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}
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matrix4_translate3f(&ident, &ident, m_position.x, m_position.y, m_position.z);
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{
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Helper::Vertex& v = m_vertexHelper->at(0);
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v.uv[0].x = 0; v.uv[0].y = 0;
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v.color = 0xFFFFFFFF;
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v.position.x = -1.0;
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v.position.y = -1.0;
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v.position.z = 0.0f;
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vec3_transform(&v.position, &v.position, &ident);
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}
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{
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Helper::Vertex& v = m_vertexHelper->at(1);
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v.uv[0].x = 1; v.uv[0].y = 0;
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v.color = 0xFFFFFFFF;
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v.position.x = 1.0;
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v.position.y = -1.0;
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v.position.z = 0.0f;
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vec3_transform(&v.position, &v.position, &ident);
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}
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{
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Helper::Vertex& v = m_vertexHelper->at(2);
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v.uv[0].x = 0; v.uv[0].y = 1;
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v.color = 0xFFFFFFFF;
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v.position.x = -1.0;
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v.position.y = 1.0;
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v.position.z = 0.0f;
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vec3_transform(&v.position, &v.position, &ident);
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}
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{
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Helper::Vertex& v = m_vertexHelper->at(3);
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v.uv[0].x = 1; v.uv[0].y = 1;
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v.color = 0xFFFFFFFF;
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v.position.x = 1.0;
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v.position.y = 1.0;
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v.position.z = 0.0f;
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vec3_transform(&v.position, &v.position, &ident);
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}
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m_vertexBuffer = m_vertexHelper->update();
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}
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|
|
|
// Draw shape to texture
|
|
gs_texrender_reset(m_shapeRender);
|
|
if (gs_texrender_begin(m_shapeRender, baseW, baseH)) {
|
|
if (m_isCameraOrthographic) {
|
|
gs_ortho(-1.0, 1.0, -1.0, 1.0, -farZ, farZ);
|
|
} else {
|
|
gs_perspective(m_cameraFieldOfView, float_t(baseW) / float_t(baseH), nearZ, farZ);
|
|
// Fix camera pointing at -Z instead of +Z.
|
|
gs_matrix_scale3f(1.0, 1.0, -1.0);
|
|
// Move backwards so we can actually see stuff.
|
|
gs_matrix_translate3f(0, 0, 1.0);
|
|
}
|
|
|
|
// Rendering
|
|
vec4 black;
|
|
vec4_zero(&black);
|
|
gs_clear(GS_CLEAR_COLOR | GS_CLEAR_DEPTH, &black, farZ, 0);
|
|
gs_set_cull_mode(GS_NEITHER);
|
|
gs_enable_blending(false);
|
|
gs_enable_depth_test(false);
|
|
gs_depth_function(gs_depth_test::GS_ALWAYS);
|
|
gs_enable_stencil_test(false);
|
|
gs_enable_stencil_write(false);
|
|
gs_enable_color(true, true, true, true);
|
|
while (gs_effect_loop(alphaEffect, "Draw")) {
|
|
gs_effect_set_texture(gs_effect_get_param_by_name(alphaEffect, "image"), filterTexture);
|
|
gs_load_vertexbuffer(m_vertexBuffer);
|
|
gs_load_indexbuffer(NULL);
|
|
gs_draw(GS_TRISTRIP, 0, 4);
|
|
}
|
|
|
|
gs_texrender_end(m_shapeRender);
|
|
} else {
|
|
obs_source_skip_video_filter(m_sourceContext);
|
|
return;
|
|
}
|
|
gs_texture* shapeTexture = gs_texrender_get_texture(m_shapeRender);
|
|
|
|
// Draw final shape
|
|
gs_reset_blend_state();
|
|
gs_enable_depth_test(false);
|
|
while (gs_effect_loop(alphaEffect, "Draw")) {
|
|
gs_effect_set_texture(gs_effect_get_param_by_name(alphaEffect, "image"), shapeTexture);
|
|
gs_draw_sprite(shapeTexture, 0, 0, 0);
|
|
}
|
|
}
|