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obs-streamFX/source/filter-transform.cpp

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/*
* Modern effects for a modern Streamer
* Copyright (C) 2017 Michael Fabian Dirks
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "filter-transform.hpp"
#include "strings.hpp"
#include "util-math.hpp"
// OBS
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable : 4201)
#endif
#include <graphics/graphics.h>
#include <graphics/matrix4.h>
#include <util/platform.h>
#ifdef _MSC_VER
#pragma warning(pop)
#endif
#define ST "Filter.Transform"
#define ST_CAMERA "Filter.Transform.Camera"
#define ST_CAMERA_ORTHOGRAPHIC "Filter.Transform.Camera.Orthographic"
#define ST_CAMERA_PERSPECTIVE "Filter.Transform.Camera.Perspective"
#define ST_CAMERA_FIELDOFVIEW "Filter.Transform.Camera.FieldOfView"
#define ST_POSITION "Filter.Transform.Position"
#define ST_POSITION_X "Filter.Transform.Position.X"
#define ST_POSITION_Y "Filter.Transform.Position.Y"
#define ST_POSITION_Z "Filter.Transform.Position.Z"
#define ST_ROTATION "Filter.Transform.Rotation"
#define ST_ROTATION_X "Filter.Transform.Rotation.X"
#define ST_ROTATION_Y "Filter.Transform.Rotation.Y"
#define ST_ROTATION_Z "Filter.Transform.Rotation.Z"
#define ST_SCALE "Filter.Transform.Scale"
#define ST_SCALE_X "Filter.Transform.Scale.X"
#define ST_SCALE_Y "Filter.Transform.Scale.Y"
#define ST_SHEAR "Filter.Transform.Shear"
#define ST_SHEAR_X "Filter.Transform.Shear.X"
#define ST_SHEAR_Y "Filter.Transform.Shear.Y"
#define ST_ROTATION_ORDER "Filter.Transform.Rotation.Order"
#define ST_ROTATION_ORDER_XYZ "Filter.Transform.Rotation.Order.XYZ"
#define ST_ROTATION_ORDER_XZY "Filter.Transform.Rotation.Order.XZY"
#define ST_ROTATION_ORDER_YXZ "Filter.Transform.Rotation.Order.YXZ"
#define ST_ROTATION_ORDER_YZX "Filter.Transform.Rotation.Order.YZX"
#define ST_ROTATION_ORDER_ZXY "Filter.Transform.Rotation.Order.ZXY"
#define ST_ROTATION_ORDER_ZYX "Filter.Transform.Rotation.Order.ZYX"
#define ST_MIPMAPPING "Filter.Transform.Mipmapping"
static const float farZ = 2097152.0f; // 2 pow 21
static const float nearZ = 1.0f / farZ;
enum class CameraMode : int32_t { Orthographic, Perspective };
enum RotationOrder : int64_t {
XYZ,
XZY,
YXZ,
YZX,
ZXY,
ZYX,
};
// Initializer & Finalizer
INITIALIZER(FilterTransformInit)
{
initializerFunctions.push_back([] { filter::transform::transform_factory::initialize(); });
finalizerFunctions.push_back([] { filter::transform::transform_factory::finalize(); });
}
static std::shared_ptr<filter::transform::transform_factory> factory_instance = nullptr;
void filter::transform::transform_factory::initialize()
{
factory_instance = std::make_shared<filter::transform::transform_factory>();
}
void filter::transform::transform_factory::finalize()
{
factory_instance.reset();
}
std::shared_ptr<filter::transform::transform_factory> filter::transform::transform_factory::get()
{
return factory_instance;
}
filter::transform::transform_factory::transform_factory()
{
memset(&sourceInfo, 0, sizeof(obs_source_info));
sourceInfo.id = "obs-stream-effects-filter-transform";
sourceInfo.type = OBS_SOURCE_TYPE_FILTER;
sourceInfo.output_flags = OBS_SOURCE_VIDEO;
sourceInfo.get_name = get_name;
sourceInfo.get_defaults = get_defaults;
sourceInfo.get_properties = get_properties;
sourceInfo.create = create;
sourceInfo.destroy = destroy;
sourceInfo.update = update;
sourceInfo.activate = activate;
sourceInfo.deactivate = deactivate;
sourceInfo.video_tick = video_tick;
sourceInfo.video_render = video_render;
obs_register_source(&sourceInfo);
}
filter::transform::transform_factory::~transform_factory() {}
const char* filter::transform::transform_factory::get_name(void*)
{
return P_TRANSLATE(ST);
}
void filter::transform::transform_factory::get_defaults(obs_data_t* data)
{
obs_data_set_default_int(data, ST_CAMERA, (int64_t)CameraMode::Orthographic);
obs_data_set_default_double(data, ST_CAMERA_FIELDOFVIEW, 90.0);
obs_data_set_default_double(data, ST_POSITION_X, 0);
obs_data_set_default_double(data, ST_POSITION_Y, 0);
obs_data_set_default_double(data, ST_POSITION_Z, 0);
obs_data_set_default_double(data, ST_ROTATION_X, 0);
obs_data_set_default_double(data, ST_ROTATION_Y, 0);
obs_data_set_default_double(data, ST_ROTATION_Z, 0);
obs_data_set_default_double(data, ST_SCALE_X, 100);
obs_data_set_default_double(data, ST_SCALE_Y, 100);
obs_data_set_default_double(data, ST_SHEAR_X, 0);
obs_data_set_default_double(data, ST_SHEAR_Y, 0);
obs_data_set_default_bool(data, S_ADVANCED, false);
obs_data_set_default_int(data, ST_ROTATION_ORDER, RotationOrder::ZXY);
}
obs_properties_t* filter::transform::transform_factory::get_properties(void*)
{
obs_properties_t* pr = obs_properties_create();
obs_property_t* p = NULL;
// Camera
/// Projection Mode
p = obs_properties_add_list(pr, ST_CAMERA, P_TRANSLATE(ST_CAMERA), OBS_COMBO_TYPE_LIST, OBS_COMBO_FORMAT_INT);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(ST_CAMERA)));
obs_property_list_add_int(p, P_TRANSLATE(ST_CAMERA_ORTHOGRAPHIC), (int64_t)CameraMode::Orthographic);
obs_property_list_add_int(p, P_TRANSLATE(ST_CAMERA_PERSPECTIVE), (int64_t)CameraMode::Perspective);
obs_property_set_modified_callback(p, modified_properties);
/// Field Of View
p = obs_properties_add_float_slider(pr, ST_CAMERA_FIELDOFVIEW, P_TRANSLATE(ST_CAMERA_FIELDOFVIEW), 1.0, 179.0,
0.01);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(ST_CAMERA_FIELDOFVIEW)));
// Mesh
/// Position
{
std::pair<const char*, const char*> entries[] = {
std::make_pair(ST_POSITION_X, P_DESC(ST_POSITION_X)),
std::make_pair(ST_POSITION_Y, P_DESC(ST_POSITION_Y)),
std::make_pair(ST_POSITION_Z, P_DESC(ST_POSITION_Z)),
};
for (auto kv : entries) {
p = obs_properties_add_float(pr, kv.first, P_TRANSLATE(kv.first), -10000, 10000, 0.01);
obs_property_set_long_description(p, P_TRANSLATE(kv.second));
}
}
/// Rotation
{
std::pair<const char*, const char*> entries[] = {
std::make_pair(ST_ROTATION_X, P_DESC(ST_ROTATION_X)),
std::make_pair(ST_ROTATION_Y, P_DESC(ST_ROTATION_Y)),
std::make_pair(ST_ROTATION_Z, P_DESC(ST_ROTATION_Z)),
};
for (auto kv : entries) {
p = obs_properties_add_float_slider(pr, kv.first, P_TRANSLATE(kv.first), -180, 180, 0.01);
obs_property_set_long_description(p, P_TRANSLATE(kv.second));
}
}
/// Scale
{
std::pair<const char*, const char*> entries[] = {
std::make_pair(ST_SCALE_X, P_DESC(ST_SCALE_X)),
std::make_pair(ST_SCALE_Y, P_DESC(ST_SCALE_Y)),
};
for (auto kv : entries) {
p = obs_properties_add_float_slider(pr, kv.first, P_TRANSLATE(kv.first), -1000, 1000, 0.01);
obs_property_set_long_description(p, P_TRANSLATE(kv.second));
}
}
/// Shear
{
std::pair<const char*, const char*> entries[] = {
std::make_pair(ST_SHEAR_X, P_DESC(ST_SHEAR_X)),
std::make_pair(ST_SHEAR_Y, P_DESC(ST_SHEAR_Y)),
};
for (auto kv : entries) {
p = obs_properties_add_float_slider(pr, kv.first, P_TRANSLATE(kv.first), -100.0, 100.0, 0.01);
obs_property_set_long_description(p, P_TRANSLATE(kv.second));
}
}
p = obs_properties_add_bool(pr, S_ADVANCED, P_TRANSLATE(S_ADVANCED));
obs_property_set_modified_callback(p, modified_properties);
p = obs_properties_add_list(pr, ST_ROTATION_ORDER, P_TRANSLATE(ST_ROTATION_ORDER), OBS_COMBO_TYPE_LIST,
OBS_COMBO_FORMAT_INT);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(ST_ROTATION_ORDER)));
obs_property_list_add_int(p, P_TRANSLATE(ST_ROTATION_ORDER_XYZ), RotationOrder::XYZ);
obs_property_list_add_int(p, P_TRANSLATE(ST_ROTATION_ORDER_XZY), RotationOrder::XZY);
obs_property_list_add_int(p, P_TRANSLATE(ST_ROTATION_ORDER_YXZ), RotationOrder::YXZ);
obs_property_list_add_int(p, P_TRANSLATE(ST_ROTATION_ORDER_YZX), RotationOrder::YZX);
obs_property_list_add_int(p, P_TRANSLATE(ST_ROTATION_ORDER_ZXY), RotationOrder::ZXY);
obs_property_list_add_int(p, P_TRANSLATE(ST_ROTATION_ORDER_ZYX), RotationOrder::ZYX);
p = obs_properties_add_bool(pr, ST_MIPMAPPING, P_TRANSLATE(ST_MIPMAPPING));
obs_property_set_modified_callback(p, modified_properties);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(ST_MIPMAPPING)));
p = obs_properties_add_list(pr, S_MIPGENERATOR, P_TRANSLATE(S_MIPGENERATOR), OBS_COMBO_TYPE_LIST,
OBS_COMBO_FORMAT_INT);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(S_MIPGENERATOR)));
obs_property_list_add_int(p, P_TRANSLATE(S_MIPGENERATOR_POINT), (long long)gs::mipmapper::generator::Point);
obs_property_list_add_int(p, P_TRANSLATE(S_MIPGENERATOR_POINT), (long long)gs::mipmapper::generator::Linear);
obs_property_list_add_int(p, P_TRANSLATE(S_MIPGENERATOR_POINT), (long long)gs::mipmapper::generator::Sharpen);
obs_property_list_add_int(p, P_TRANSLATE(S_MIPGENERATOR_POINT), (long long)gs::mipmapper::generator::Smoothen);
obs_property_list_add_int(p, P_TRANSLATE(S_MIPGENERATOR_POINT), (long long)gs::mipmapper::generator::Bicubic);
obs_property_list_add_int(p, P_TRANSLATE(S_MIPGENERATOR_POINT), (long long)gs::mipmapper::generator::Lanczos);
p = obs_properties_add_float_slider(pr, S_MIPGENERATOR_STRENGTH, P_TRANSLATE(S_MIPGENERATOR_STRENGTH), 0.0, 1000.0,
0.01);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(S_MIPGENERATOR_STRENGTH)));
return pr;
}
bool filter::transform::transform_factory::modified_properties(obs_properties_t* pr, obs_property_t*, obs_data_t* d)
{
switch ((CameraMode)obs_data_get_int(d, ST_CAMERA)) {
case CameraMode::Orthographic:
obs_property_set_visible(obs_properties_get(pr, ST_CAMERA_FIELDOFVIEW), false);
obs_property_set_visible(obs_properties_get(pr, ST_POSITION_Z), false);
break;
case CameraMode::Perspective:
obs_property_set_visible(obs_properties_get(pr, ST_CAMERA_FIELDOFVIEW), true);
obs_property_set_visible(obs_properties_get(pr, ST_POSITION_Z), true);
break;
}
bool advancedVisible = obs_data_get_bool(d, S_ADVANCED);
obs_property_set_visible(obs_properties_get(pr, ST_ROTATION_ORDER), advancedVisible);
obs_property_set_visible(obs_properties_get(pr, ST_MIPMAPPING), advancedVisible);
bool mipmappingVisible = obs_data_get_bool(d, ST_MIPMAPPING) && advancedVisible;
obs_property_set_visible(obs_properties_get(pr, S_MIPGENERATOR), mipmappingVisible);
obs_property_set_visible(obs_properties_get(pr, S_MIPGENERATOR_STRENGTH), mipmappingVisible);
return true;
}
void* filter::transform::transform_factory::create(obs_data_t* data, obs_source_t* source)
{
return new transform_instance(data, source);
}
void filter::transform::transform_factory::destroy(void* ptr)
{
delete reinterpret_cast<transform_instance*>(ptr);
}
uint32_t filter::transform::transform_factory::get_width(void* ptr)
{
return reinterpret_cast<transform_instance*>(ptr)->get_width();
}
uint32_t filter::transform::transform_factory::get_height(void* ptr)
{
return reinterpret_cast<transform_instance*>(ptr)->get_height();
}
void filter::transform::transform_factory::update(void* ptr, obs_data_t* data)
{
reinterpret_cast<transform_instance*>(ptr)->update(data);
}
void filter::transform::transform_factory::activate(void* ptr)
{
reinterpret_cast<transform_instance*>(ptr)->activate();
}
void filter::transform::transform_factory::deactivate(void* ptr)
{
reinterpret_cast<transform_instance*>(ptr)->deactivate();
}
void filter::transform::transform_factory::video_tick(void* ptr, float time)
{
reinterpret_cast<transform_instance*>(ptr)->video_tick(time);
}
void filter::transform::transform_factory::video_render(void* ptr, gs_effect_t* effect)
{
reinterpret_cast<transform_instance*>(ptr)->video_render(effect);
}
filter::transform::transform_instance::~transform_instance()
{
m_shear.reset();
m_scale.reset();
m_rotation.reset();
m_position.reset();
m_vertex_buffer.reset();
m_shape_texture.reset();
m_shape_rendertarget.reset();
m_source_texture.reset();
m_source_rendertarget.reset();
}
filter::transform::transform_instance::transform_instance(obs_data_t* data, obs_source_t* context)
: m_active(true), m_self(context), m_source_rendered(false), m_mipmap_enabled(false), m_mipmap_strength(50.0),
m_mipmap_generator(gs::mipmapper::generator::Linear), m_update_mesh(false), m_rotation_order(RotationOrder::ZXY),
m_camera_orthographic(true), m_camera_fov(90.0)
{
m_source_rendertarget = std::make_shared<gs::rendertarget>(GS_RGBA, GS_ZS_NONE);
m_shape_rendertarget = std::make_shared<gs::rendertarget>(GS_RGBA, GS_ZS_NONE);
m_vertex_buffer = std::make_shared<gs::vertex_buffer>(4u, 1u);
m_position = std::make_unique<util::vec3a>();
m_rotation = std::make_unique<util::vec3a>();
m_scale = std::make_unique<util::vec3a>();
m_shear = std::make_unique<util::vec3a>();
vec3_set(m_position.get(), 0, 0, 0);
vec3_set(m_rotation.get(), 0, 0, 0);
vec3_set(m_scale.get(), 1, 1, 1);
update(data);
}
uint32_t filter::transform::transform_instance::get_width()
{
return 0;
}
uint32_t filter::transform::transform_instance::get_height()
{
return 0;
}
void filter::transform::transform_instance::update(obs_data_t* data)
{
// Camera
m_camera_orthographic = obs_data_get_int(data, ST_CAMERA) == 0;
m_camera_fov = (float)obs_data_get_double(data, ST_CAMERA_FIELDOFVIEW);
// Source
m_position->x = (float)obs_data_get_double(data, ST_POSITION_X) / 100.0f;
m_position->y = (float)obs_data_get_double(data, ST_POSITION_Y) / 100.0f;
m_position->z = (float)obs_data_get_double(data, ST_POSITION_Z) / 100.0f;
m_scale->x = (float)obs_data_get_double(data, ST_SCALE_X) / 100.0f;
m_scale->y = (float)obs_data_get_double(data, ST_SCALE_Y) / 100.0f;
m_scale->z = 1.0f;
m_rotation_order = (int)obs_data_get_int(data, ST_ROTATION_ORDER);
m_rotation->x = (float)(obs_data_get_double(data, ST_ROTATION_X) / 180.0f * PI);
m_rotation->y = (float)(obs_data_get_double(data, ST_ROTATION_Y) / 180.0f * PI);
m_rotation->z = (float)(obs_data_get_double(data, ST_ROTATION_Z) / 180.0f * PI);
m_shear->x = (float)obs_data_get_double(data, ST_SHEAR_X) / 100.0f;
m_shear->y = (float)obs_data_get_double(data, ST_SHEAR_Y) / 100.0f;
m_shear->z = 0.0f;
// Mipmapping
m_mipmap_enabled = obs_data_get_bool(data, ST_MIPMAPPING);
m_mipmap_strength = obs_data_get_double(data, S_MIPGENERATOR_STRENGTH);
m_mipmap_generator = (gs::mipmapper::generator)obs_data_get_int(data, S_MIPGENERATOR);
m_update_mesh = true;
}
void filter::transform::transform_instance::activate()
{
m_active = true;
}
void filter::transform::transform_instance::deactivate()
{
m_active = false;
}
void filter::transform::transform_instance::video_tick(float)
{
// Update Mesh
if (m_update_mesh) {
uint32_t width = 0;
uint32_t height = 0;
// Grab parent and target.
obs_source_t* target = obs_filter_get_target(m_self);
if (target) {
// Grab width an height of the target source (child filter or source).
width = obs_source_get_base_width(target);
height = obs_source_get_base_height(target);
}
if (width == 0) {
width = 1;
}
if (height == 0) {
height = 1;
}
// Calculate Aspect Ratio
float_t aspectRatioX = float_t(width) / float_t(height);
if (m_camera_orthographic)
aspectRatioX = 1.0;
// Mesh
matrix4 ident;
matrix4_identity(&ident);
switch (m_rotation_order) {
case RotationOrder::XYZ: // XYZ
matrix4_rotate_aa4f(&ident, &ident, 1, 0, 0, m_rotation->x);
matrix4_rotate_aa4f(&ident, &ident, 0, 1, 0, m_rotation->y);
matrix4_rotate_aa4f(&ident, &ident, 0, 0, 1, m_rotation->z);
break;
case RotationOrder::XZY: // XZY
matrix4_rotate_aa4f(&ident, &ident, 1, 0, 0, m_rotation->x);
matrix4_rotate_aa4f(&ident, &ident, 0, 0, 1, m_rotation->z);
matrix4_rotate_aa4f(&ident, &ident, 0, 1, 0, m_rotation->y);
break;
case RotationOrder::YXZ: // YXZ
matrix4_rotate_aa4f(&ident, &ident, 0, 1, 0, m_rotation->y);
matrix4_rotate_aa4f(&ident, &ident, 1, 0, 0, m_rotation->x);
matrix4_rotate_aa4f(&ident, &ident, 0, 0, 1, m_rotation->z);
break;
case RotationOrder::YZX: // YZX
matrix4_rotate_aa4f(&ident, &ident, 0, 1, 0, m_rotation->y);
matrix4_rotate_aa4f(&ident, &ident, 0, 0, 1, m_rotation->z);
matrix4_rotate_aa4f(&ident, &ident, 1, 0, 0, m_rotation->x);
break;
case RotationOrder::ZXY: // ZXY
matrix4_rotate_aa4f(&ident, &ident, 0, 0, 1, m_rotation->z);
matrix4_rotate_aa4f(&ident, &ident, 1, 0, 0, m_rotation->x);
matrix4_rotate_aa4f(&ident, &ident, 0, 1, 0, m_rotation->y);
break;
case RotationOrder::ZYX: // ZYX
matrix4_rotate_aa4f(&ident, &ident, 0, 0, 1, m_rotation->z);
matrix4_rotate_aa4f(&ident, &ident, 0, 1, 0, m_rotation->y);
matrix4_rotate_aa4f(&ident, &ident, 1, 0, 0, m_rotation->x);
break;
}
matrix4_translate3f(&ident, &ident, m_position->x, m_position->y, m_position->z);
/// Calculate vertex position once only.
float_t p_x = aspectRatioX * m_scale->x;
float_t p_y = 1.0f * m_scale->y;
/// Generate mesh
{
auto vtx = m_vertex_buffer->at(0);
*vtx.color = 0xFFFFFFFF;
vec4_set(vtx.uv[0], 0, 0, 0, 0);
vec3_set(vtx.position, -p_x + m_shear->x, -p_y - m_shear->y, 0);
vec3_transform(vtx.position, vtx.position, &ident);
}
{
auto vtx = m_vertex_buffer->at(1);
*vtx.color = 0xFFFFFFFF;
vec4_set(vtx.uv[0], 1, 0, 0, 0);
vec3_set(vtx.position, p_x + m_shear->x, -p_y + m_shear->y, 0);
vec3_transform(vtx.position, vtx.position, &ident);
}
{
auto vtx = m_vertex_buffer->at(2);
*vtx.color = 0xFFFFFFFF;
vec4_set(vtx.uv[0], 0, 1, 0, 0);
vec3_set(vtx.position, -p_x - m_shear->x, p_y - m_shear->y, 0);
vec3_transform(vtx.position, vtx.position, &ident);
}
{
auto vtx = m_vertex_buffer->at(3);
*vtx.color = 0xFFFFFFFF;
vec4_set(vtx.uv[0], 1, 1, 0, 0);
vec3_set(vtx.position, p_x - m_shear->x, p_y + m_shear->y, 0);
vec3_transform(vtx.position, vtx.position, &ident);
}
m_vertex_buffer->update(true);
m_update_mesh = false;
}
this->m_source_rendered = false;
}
void filter::transform::transform_instance::video_render(gs_effect_t* paramEffect)
{
if (!m_active) {
obs_source_skip_video_filter(m_self);
return;
}
// Grab parent and target.
obs_source_t* parent = obs_filter_get_parent(m_self);
obs_source_t* target = obs_filter_get_target(m_self);
if (!parent || !target) {
obs_source_skip_video_filter(m_self);
return;
}
// Grab width an height of the target source (child filter or source).
uint32_t width = obs_source_get_base_width(target);
uint32_t height = obs_source_get_base_height(target);
if ((width == 0) || (height == 0)) {
obs_source_skip_video_filter(m_self);
return;
}
gs_effect_t* default_effect = obs_get_base_effect(OBS_EFFECT_DEFAULT);
// Only render if we didn't already render.
if (!this->m_source_rendered) {
std::shared_ptr<gs::texture> source_tex;
uint32_t real_width = width;
uint32_t real_height = height;
// If MipMapping is enabled, resize Render Target to be a Power of Two.
if (m_mipmap_enabled) {
real_width = uint32_t(pow(2, util::math::get_power_of_two_exponent_ceil(width)));
real_height = uint32_t(pow(2, util::math::get_power_of_two_exponent_ceil(height)));
if ((real_width >= 8192) || (real_height >= 8192)) {
// Most GPUs cap out here, so let's not go higher.
double_t aspect = double_t(width) / double_t(height);
if (aspect > 1.0) { // height < width
real_width = 8192;
real_height = uint32_t(real_width / aspect);
} else if (aspect < 1.0) { // width > height
real_height = 8192;
real_width = uint32_t(real_height * aspect);
}
}
}
// Draw previous filters to texture.
try {
auto op = m_source_rendertarget->render(real_width, real_height);
gs_set_cull_mode(GS_NEITHER);
gs_reset_blend_state();
gs_blend_function_separate(gs_blend_type::GS_BLEND_ONE, gs_blend_type::GS_BLEND_ZERO,
gs_blend_type::GS_BLEND_ONE, gs_blend_type::GS_BLEND_ZERO);
gs_enable_depth_test(false);
gs_enable_stencil_test(false);
gs_enable_stencil_write(false);
gs_enable_color(true, true, true, true);
gs_ortho(0, (float)width, 0, (float)height, -1, 1);
vec4 black;
vec4_zero(&black);
gs_clear(GS_CLEAR_COLOR | GS_CLEAR_DEPTH, &black, 0, 0);
/// Render original source
if (obs_source_process_filter_begin(m_self, GS_RGBA, OBS_NO_DIRECT_RENDERING)) {
obs_source_process_filter_end(m_self, paramEffect ? paramEffect : default_effect, width, height);
} else {
obs_source_skip_video_filter(m_self);
}
} catch (...) {
obs_source_skip_video_filter(m_self);
return;
}
m_source_rendertarget->get_texture(source_tex);
if (m_mipmap_enabled) {
if ((!m_source_texture) || (m_source_texture->get_width() != real_width)
|| (m_source_texture->get_height() != real_height)) {
size_t mip_levels = 0;
if (util::math::is_power_of_two(real_width) && util::math::is_power_of_two(real_height)) {
size_t w_level = util::math::get_power_of_two_exponent_ceil(real_width);
size_t h_level = util::math::get_power_of_two_exponent_ceil(real_height);
if (h_level > w_level) {
mip_levels = h_level;
} else {
mip_levels = w_level;
}
}
m_source_texture =
std::make_shared<gs::texture>(real_width, real_height, GS_RGBA, uint32_t(1u + mip_levels), nullptr,
gs::texture::flags::BuildMipMaps);
}
m_mipmapper.rebuild(source_tex, m_source_texture, m_mipmap_generator, float_t(m_mipmap_strength));
}
// Draw shape to texture
try {
auto op = m_shape_rendertarget->render(width, height);
if (m_camera_orthographic) {
gs_ortho(-1.0, 1.0, -1.0, 1.0, -farZ, farZ);
} else {
gs_perspective(m_camera_fov, float_t(width) / float_t(height), 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);
gs_load_vertexbuffer(m_vertex_buffer->update(false));
gs_load_indexbuffer(nullptr);
while (gs_effect_loop(default_effect, "Draw")) {
gs_effect_set_texture(gs_effect_get_param_by_name(default_effect, "image"),
m_mipmap_enabled ? m_source_texture->get_object() : source_tex->get_object());
gs_draw(GS_TRISTRIP, 0, 4);
}
gs_load_vertexbuffer(nullptr);
} catch (...) {
obs_source_skip_video_filter(m_self);
return;
}
m_shape_rendertarget->get_texture(m_shape_texture);
this->m_source_rendered = true;
}
// Draw final shape
gs_reset_blend_state();
gs_enable_depth_test(false);
while (gs_effect_loop(default_effect, "Draw")) {
gs_effect_set_texture(gs_effect_get_param_by_name(default_effect, "image"), m_shape_texture->get_object());
gs_draw_sprite(m_shape_texture->get_object(), 0, 0, 0);
}
}
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