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filter-shadow-sdf: Inner/Outer shadow based on signed distance fields

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Adds Inner/Outer Shadows for dynamic sources based on signed distance field generation. This is fast, but does add a bit of latency when it comes to updates - which means that moving objects will leave a trail before the generator has a chance to update.

Fixes #3
This commit is contained in:
Michael Fabian 'Xaymar' Dirks 2018-11-08 13:52:43 +01:00
parent c0cb20300b
commit 0c92f3dbf5
6 changed files with 844 additions and 1 deletions
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3
CMakeLists.txt
View file

@ -203,6 +203,7 @@ SET(PROJECT_DATA_EFFECTS
"${PROJECT_SOURCE_DIR}/data/effects/mask.effect"
"${PROJECT_SOURCE_DIR}/data/effects/mip-mapper.effect"
"${PROJECT_SOURCE_DIR}/data/effects/mipgen.effect"
"${PROJECT_SOURCE_DIR}/data/effects/sdf-generator.effect"
)
SET(PROJECT_DATA_SHADERS
# "${PROJECT_SOURCE_DIR}/data/shaders/name.effect"
@ -225,6 +226,8 @@ SET(PROJECT_PRIVATE
"${PROJECT_SOURCE_DIR}/source/filter-displacement.cpp"
"${PROJECT_SOURCE_DIR}/source/filter-blur.h"
"${PROJECT_SOURCE_DIR}/source/filter-blur.cpp"
"${PROJECT_SOURCE_DIR}/source/filter-shadow-sdf.hpp"
"${PROJECT_SOURCE_DIR}/source/filter-shadow-sdf.cpp"
"${PROJECT_SOURCE_DIR}/source/filter-shape.h"
"${PROJECT_SOURCE_DIR}/source/filter-shape.cpp"
"${PROJECT_SOURCE_DIR}/source/filter-transform.h"

119
data/effects/sdf-generator.effect Normal file
View file

@ -0,0 +1,119 @@
// OBS Default
uniform float4x4 ViewProj;
// Inputs
uniform texture2d _image;
uniform float2 _size;
uniform texture2d _sdf; // in, out - swap rendering
uniform float _threshold;
#define NEAR_INFINITE 18446744073709551616.0
#define RANGE 4
sampler_state sdfSampler {
Filter = Point;
AddressU = Clamp;
AddressV = Clamp;
};
sampler_state imageSampler {
Filter = Point;
AddressU = Clamp;
AddressV = Clamp;
};
struct VertDataIn {
float4 pos : POSITION;
float2 uv : TEXCOORD0;
};
struct VertDataOut {
float4 pos : POSITION;
float2 uv : TEXCOORD0;
};
VertDataOut VSDefault(VertDataIn v_in)
{
VertDataOut vert_out;
vert_out.pos = mul(float4(v_in.pos.xyz, 1.0), ViewProj);
vert_out.uv = v_in.uv;
return vert_out;
}
float4 PS_SDFGenerator_v1(VertDataOut v_in) : TARGET
{
float4 outval = float4(0.0, 0.0, v_in.uv.x, v_in.uv.y);
// utility values
float2 uv_step = 1.0 / _size;
float lowest = NEAR_INFINITE;
float2 lowest_source = float2(NEAR_INFINITE, NEAR_INFINITE);
float2 lowest_origin = float2(NEAR_INFINITE, NEAR_INFINITE);
// inputs
float imageA = _image.Sample(imageSampler, v_in.uv).a;
// sdf contains 4 values: R = Positive Distance, G = Negative Distance, BA = UV of nearest edge.
if (imageA > _threshold) {
// Inside
// TODO: Optimize to be O(n*n) instead of (2n*2n)
for (int x = -RANGE; x < RANGE; x++) {
for (int y = -RANGE; y < RANGE; y++) {
if ((x == 0) && (y == 0)) {
continue;
}
float2 dtr = float2(x, y);
float2 dt = uv_step * dtr;
float4 here = _sdf.Sample(sdfSampler, v_in.uv + dt);
float dst = abs(distance(float2(0., 0.), dtr));
if (lowest > (here.g + dst)) {
lowest = here.g + dst;
lowest_source = v_in.uv + dt;
lowest_origin = here.ba;
}
}
}
if (lowest < NEAR_INFINITE) {
outval.g = lowest;
outval.ba = lowest_origin;
}
} else {
// Outside
// TODO: Optimize to be O(n*n) instead of (2n*2n)
for (int x = -RANGE; x < RANGE; x++) {
for (int y = -RANGE; y < RANGE; y++) {
if ((x == 0) && (y == 0)) {
continue;
}
float2 dtr = float2(x, y);
float2 dt = uv_step * dtr;
float4 here = _sdf.Sample(sdfSampler, v_in.uv + dt);
float dst = abs(distance(float2(0., 0.), dtr));
if (lowest > (here.r + dst)) {
lowest = here.r + dst;
lowest_source = v_in.uv + dt;
lowest_origin = here.ba;
}
}
}
if (lowest < NEAR_INFINITE) {
outval.r = lowest;
outval.ba = lowest_origin;
}
}
return outval;
}
technique Draw
{
pass
{
vertex_shader = VSDefault(v_in);
pixel_shader = PS_SDFGenerator_v1(v_in);
}
}

75
data/effects/sdf-shadow.effect Normal file
View file

@ -0,0 +1,75 @@
// OBS Default
uniform float4x4 ViewProj;
// Inputs
uniform texture2d _sdf;
uniform texture2d _image;
uniform float _inner_min;
uniform float _inner_max;
uniform float2 _inner_offset;
uniform float4 _inner_color;
uniform float _outer_min;
uniform float _outer_max;
uniform float2 _outer_offset;
uniform float4 _outer_color;
uniform float _threshold;
#define NEAR_INFINITE 18446744073709551616.0
sampler_state sdfSampler {
Filter = Trilinear;
AddressU = Clamp;
AddressV = Clamp;
};
sampler_state imageSampler {
Filter = Trilinear;
AddressU = Clamp;
AddressV = Clamp;
};
struct VertDataIn {
float4 pos : POSITION;
float2 uv : TEXCOORD0;
};
struct VertDataOut {
float4 pos : POSITION;
float2 uv : TEXCOORD0;
};
VertDataOut VSDefault(VertDataIn v_in)
{
VertDataOut vert_out;
vert_out.pos = mul(float4(v_in.pos.xyz, 1.0), ViewProj);
vert_out.uv = v_in.uv;
return vert_out;
}
float4 PS_SDFShadow_v1(VertDataOut v_in) : TARGET
{
float4 final = _image.Sample(imageSampler, v_in.uv);
if (_inner_max > 0 && final.a >= _threshold) {
float inner_dist = _sdf.Sample(sdfSampler, v_in.uv + _inner_offset).g;
float range = (_inner_max - _inner_min);
float str = clamp(inner_dist - _inner_min, 0, range) / range;
final = lerp(_inner_color, final, str);
}
if (_outer_max > 0 && final.a < _threshold) {
float outer_dist = _sdf.Sample(sdfSampler, v_in.uv + _outer_offset).r;
float range = (_outer_max - _outer_min);
float str = clamp(outer_dist - _outer_min, 0, range) / range;
final = lerp(_outer_color, float4(_outer_color.r, _outer_color.g, _outer_color.b, 0.0), str);
}
return final;
}
technique Draw
{
pass
{
vertex_shader = VSDefault(v_in);
pixel_shader = PS_SDFShadow_v1(v_in);
}
}

20
data/locale/en-US.ini
View file

@ -85,7 +85,6 @@ Filter.Blur.Mask.Alpha.Description="Filter the mask by this alpha value before a
Filter.Blur.Mask.Multiplier="Mask Multiplier"
Filter.Blur.Mask.Multiplier.Description="Multiply the final mask value by this value."
# Filter - Custom Shader
Filter.CustomShader="Custom Shader"
Filter.CustomShader.Type="Type"
@ -101,6 +100,25 @@ Filter.Displacement.File.Types="Images (*.png *.jpeg *.jpg *.bmp *.tga);;All Fil
Filter.Displacement.Ratio="Ratio"
Filter.Displacement.Scale="Scale"
# Filter - Shadow (SDF)
Filter.ShadowSDF="Inner/Outer Shadow (SDF)"
Filter.ShadowSDF.Inner="Inner Shadow"
Filter.ShadowSDF.Inner.Description="Draw a shadow on the inside of the source?"
Filter.ShadowSDF.Inner.Range.Minimum="Inner Minimum Distance"
Filter.ShadowSDF.Inner.Range.Maximum="Inner Maximum Distance"
Filter.ShadowSDF.Inner.Offset.X="Inner Offset X"
Filter.ShadowSDF.Inner.Offset.Y="Inner Offset Y"
Filter.ShadowSDF.Inner.Color="Inner Color"
Filter.ShadowSDF.Inner.Alpha="Inner Alpha"
Filter.ShadowSDF.Outer="Outer Shadow"
Filter.ShadowSDF.Outer.Description="Draw a shadow on the outside of the source?"
Filter.ShadowSDF.Outer.Range.Minimum="Outer Minimum Distance"
Filter.ShadowSDF.Outer.Range.Maximum="Outer Maximum Distance"
Filter.ShadowSDF.Outer.Offset.X="Outer Offset X"
Filter.ShadowSDF.Outer.Offset.Y="Outer Offset Y"
Filter.ShadowSDF.Outer.Color="Outer Color"
Filter.ShadowSDF.Outer.Alpha="Outer Alpha"
# Filter - Shape
Filter.Shape="Shape"
Filter.Shape.Loop="Repeat last Point"

500
source/filter-shadow-sdf.cpp Normal file
View file

@ -0,0 +1,500 @@
/*
* Modern effects for a modern Streamer
* Copyright (C) 2017-2018 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-shadow-sdf.hpp"
#include "strings.h"
// Translation Strings
#define SOURCE_NAME "Filter.ShadowSDF"
#define P_INNER "Filter.ShadowSDF.Inner"
#define P_INNER_RANGE_MINIMUM "Filter.ShadowSDF.Inner.Range.Minimum"
#define P_INNER_RANGE_MAXIMUM "Filter.ShadowSDF.Inner.Range.Maximum"
#define P_INNER_OFFSET_X "Filter.ShadowSDF.Inner.Offset.X"
#define P_INNER_OFFSET_Y "Filter.ShadowSDF.Inner.Offset.Y"
#define P_INNER_COLOR "Filter.ShadowSDF.Inner.Color"
#define P_INNER_ALPHA "Filter.ShadowSDF.Inner.Alpha"
#define P_OUTER "Filter.ShadowSDF.Outer"
#define P_OUTER_RANGE_MINIMUM "Filter.ShadowSDF.Outer.Range.Minimum"
#define P_OUTER_RANGE_MAXIMUM "Filter.ShadowSDF.Outer.Range.Maximum"
#define P_OUTER_OFFSET_X "Filter.ShadowSDF.Outer.Offset.X"
#define P_OUTER_OFFSET_Y "Filter.ShadowSDF.Outer.Offset.Y"
#define P_OUTER_COLOR "Filter.ShadowSDF.Outer.Color"
#define P_OUTER_ALPHA "Filter.ShadowSDF.Outer.Alpha"
// Initializer & Finalizer
INITIALIZER(filterShadowFactoryInitializer)
{
initializerFunctions.push_back([] { filter::shadow_sdf::shadow_sdf_factory::initialize(); });
finalizerFunctions.push_back([] { filter::shadow_sdf::shadow_sdf_factory::finalize(); });
}
bool filter::shadow_sdf::shadow_sdf_instance::cb_modified_inside(void*, obs_properties_t* props, obs_property*,
obs_data_t* settings)
{
bool v = obs_data_get_bool(settings, P_INNER);
obs_property_set_visible(obs_properties_get(props, P_INNER_RANGE_MINIMUM), v);
obs_property_set_visible(obs_properties_get(props, P_INNER_RANGE_MAXIMUM), v);
obs_property_set_visible(obs_properties_get(props, P_INNER_OFFSET_X), v);
obs_property_set_visible(obs_properties_get(props, P_INNER_OFFSET_Y), v);
obs_property_set_visible(obs_properties_get(props, P_INNER_COLOR), v);
obs_property_set_visible(obs_properties_get(props, P_INNER_ALPHA), v);
return true;
}
bool filter::shadow_sdf::shadow_sdf_instance::cb_modified_outside(void*, obs_properties_t* props, obs_property*,
obs_data_t* settings)
{
bool v = obs_data_get_bool(settings, P_OUTER);
obs_property_set_visible(obs_properties_get(props, P_OUTER_RANGE_MINIMUM), v);
obs_property_set_visible(obs_properties_get(props, P_OUTER_RANGE_MAXIMUM), v);
obs_property_set_visible(obs_properties_get(props, P_OUTER_OFFSET_X), v);
obs_property_set_visible(obs_properties_get(props, P_OUTER_OFFSET_Y), v);
obs_property_set_visible(obs_properties_get(props, P_OUTER_COLOR), v);
obs_property_set_visible(obs_properties_get(props, P_OUTER_ALPHA), v);
return true;
}
filter::shadow_sdf::shadow_sdf_instance::shadow_sdf_instance(obs_data_t* settings, obs_source_t* self)
{
this->m_self = self;
this->m_input = std::make_shared<gs::rendertarget>(GS_RGBA, GS_ZS_NONE);
this->m_sdf_write = std::make_shared<gs::rendertarget>(GS_RGBA32F, GS_ZS_NONE);
{
auto op = this->m_sdf_write->render(1, 1);
}
this->m_sdf_read = std::make_shared<gs::rendertarget>(GS_RGBA32F, GS_ZS_NONE);
{
auto op = this->m_sdf_read->render(1, 1);
}
this->update(settings);
}
filter::shadow_sdf::shadow_sdf_instance::~shadow_sdf_instance() {}
obs_properties_t* filter::shadow_sdf::shadow_sdf_instance::get_properties()
{
obs_properties_t* props = obs_properties_create();
obs_property_t* p = nullptr;
p = obs_properties_add_bool(props, P_INNER, P_TRANSLATE(P_INNER));
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_INNER)));
obs_property_set_modified_callback2(p, cb_modified_inside, this);
p = obs_properties_add_float_slider(props, P_INNER_RANGE_MINIMUM, P_TRANSLATE(P_INNER_RANGE_MINIMUM), 0.0, 16.0,
0.01);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_INNER_RANGE_MINIMUM)));
p = obs_properties_add_float_slider(props, P_INNER_RANGE_MAXIMUM, P_TRANSLATE(P_INNER_RANGE_MAXIMUM), 0.0, 16.0,
0.01);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_INNER_RANGE_MAXIMUM)));
p = obs_properties_add_float_slider(props, P_INNER_OFFSET_X, P_TRANSLATE(P_INNER_OFFSET_X), -100.0, 100.0, 0.01);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_INNER_OFFSET_X)));
p = obs_properties_add_float_slider(props, P_INNER_OFFSET_Y, P_TRANSLATE(P_INNER_OFFSET_Y), -100.0, 100.0, 0.01);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_INNER_OFFSET_Y)));
p = obs_properties_add_color(props, P_INNER_COLOR, P_TRANSLATE(P_INNER_COLOR));
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_INNER_COLOR)));
p = obs_properties_add_float_slider(props, P_INNER_ALPHA, P_TRANSLATE(P_INNER_ALPHA), 0.0, 100.0, 0.1);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_INNER_ALPHA)));
p = obs_properties_add_bool(props, P_OUTER, P_TRANSLATE(P_OUTER));
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_OUTER)));
obs_property_set_modified_callback2(p, cb_modified_outside, this);
p = obs_properties_add_float_slider(props, P_OUTER_RANGE_MINIMUM, P_TRANSLATE(P_OUTER_RANGE_MINIMUM), 0.0, 16.0,
0.01);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_OUTER_RANGE_MINIMUM)));
p = obs_properties_add_float_slider(props, P_OUTER_RANGE_MAXIMUM, P_TRANSLATE(P_OUTER_RANGE_MAXIMUM), 0.0, 16.0,
0.01);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_OUTER_RANGE_MAXIMUM)));
p = obs_properties_add_float_slider(props, P_OUTER_OFFSET_X, P_TRANSLATE(P_OUTER_OFFSET_X), -100.0, 100.0, 0.01);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_OUTER_OFFSET_X)));
p = obs_properties_add_float_slider(props, P_OUTER_OFFSET_Y, P_TRANSLATE(P_OUTER_OFFSET_Y), -100.0, 100.0, 0.01);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_OUTER_OFFSET_Y)));
p = obs_properties_add_color(props, P_OUTER_COLOR, P_TRANSLATE(P_OUTER_COLOR));
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_OUTER_COLOR)));
p = obs_properties_add_float_slider(props, P_OUTER_ALPHA, P_TRANSLATE(P_OUTER_ALPHA), 0.0, 100.0, 0.1);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_OUTER_ALPHA)));
return props;
}
void filter::shadow_sdf::shadow_sdf_instance::update(obs_data_t* data)
{
this->m_inner_shadow = obs_data_get_bool(data, P_INNER);
this->m_inner_range_min = float_t(obs_data_get_double(data, P_INNER_RANGE_MINIMUM));
this->m_inner_range_max = float_t(obs_data_get_double(data, P_INNER_RANGE_MAXIMUM));
if (this->m_inner_range_max < this->m_inner_range_min) {
std::swap(this->m_inner_range_max, this->m_inner_range_min);
}
this->m_inner_offset_x = float_t(obs_data_get_double(data, P_INNER_OFFSET_X));
this->m_inner_offset_y = float_t(obs_data_get_double(data, P_INNER_OFFSET_Y));
this->m_inner_color = obs_data_get_int(data, P_INNER_COLOR) & 0x00FFFFFF
| (int32_t(obs_data_get_double(data, P_INNER_ALPHA) * 2.55) << 24);
this->m_outer_shadow = obs_data_get_bool(data, P_OUTER);
this->m_outer_range_min = float_t(obs_data_get_double(data, P_OUTER_RANGE_MINIMUM));
this->m_outer_range_max = float_t(obs_data_get_double(data, P_OUTER_RANGE_MAXIMUM));
if (this->m_outer_range_max < this->m_outer_range_min) {
std::swap(this->m_outer_range_max, this->m_outer_range_min);
}
this->m_outer_offset_x = float_t(obs_data_get_double(data, P_OUTER_OFFSET_X));
this->m_outer_offset_y = float_t(obs_data_get_double(data, P_OUTER_OFFSET_Y));
this->m_outer_color = obs_data_get_int(data, P_OUTER_COLOR) & 0x00FFFFFF
| (int32_t(obs_data_get_double(data, P_OUTER_ALPHA) * 2.55) << 24);
}
uint32_t filter::shadow_sdf::shadow_sdf_instance::get_width()
{
return uint32_t(0);
}
uint32_t filter::shadow_sdf::shadow_sdf_instance::get_height()
{
return uint32_t(0);
}
void filter::shadow_sdf::shadow_sdf_instance::activate() {}
void filter::shadow_sdf::shadow_sdf_instance::deactivate() {}
void filter::shadow_sdf::shadow_sdf_instance::video_tick(float time)
{
this->m_tick += time;
}
void filter::shadow_sdf::shadow_sdf_instance::video_render(gs_effect_t*)
{
obs_source_t* parent = obs_filter_get_parent(this->m_self);
obs_source_t* target = obs_filter_get_target(this->m_self);
uint32_t baseW = obs_source_get_base_width(target);
uint32_t baseH = obs_source_get_base_height(target);
vec4 color_transparent = {0};
gs_effect_t* default_effect = obs_get_base_effect(obs_base_effect::OBS_EFFECT_DEFAULT);
if (!parent || !target || (baseW == 0) || (baseH == 0)) {
obs_source_skip_video_filter(this->m_self);
return;
}
try {
if (this->m_tick != this->m_last_tick) {
// Store input texture.
{
auto op = m_input->render(baseW, baseH);
gs_ortho(0, (float)baseW, 0, (float)baseH, -1, 1);
gs_clear(GS_CLEAR_COLOR | GS_CLEAR_DEPTH, &color_transparent, 0, 0);
gs_set_cull_mode(GS_NEITHER);
gs_reset_blend_state();
gs_enable_blending(false);
gs_blend_function(GS_BLEND_SRCALPHA, 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);
if (obs_source_process_filter_begin(this->m_self, GS_RGBA, OBS_ALLOW_DIRECT_RENDERING)) {
obs_source_process_filter_end(this->m_self, default_effect, baseW, baseH);
} else {
throw std::exception("failed to process source");
}
m_input->get_texture(this->m_source_texture);
if (!this->m_source_texture) {
throw std::exception("failed to draw source");
}
}
// Generate SDF Buffers
{
this->m_sdf_read->get_texture(this->m_sdf_texture);
if (!this->m_sdf_texture) {
throw std::exception("SDF Backbuffer empty");
}
std::shared_ptr<gs::effect> sdf_effect =
filter::shadow_sdf::shadow_sdf_factory::get()->get_sdf_generator_effect();
if (!sdf_effect) {
throw std::exception("SDF Effect no loaded");
}
{
auto op = m_sdf_write->render(baseW, baseH);
gs_ortho(0, (float)baseW, 0, (float)baseH, -1, 1);
gs_clear(GS_CLEAR_COLOR | GS_CLEAR_DEPTH, &color_transparent, 0, 0);
gs_set_cull_mode(GS_NEITHER);
gs_reset_blend_state();
gs_enable_blending(false);
gs_enable_depth_test(false);
gs_enable_stencil_test(false);
gs_enable_stencil_write(false);
gs_enable_color(true, true, true, true);
sdf_effect->get_parameter("_image").set_texture(this->m_source_texture);
sdf_effect->get_parameter("_size").set_float2(float_t(baseW), float_t(baseH));
sdf_effect->get_parameter("_sdf").set_texture(this->m_sdf_texture);
sdf_effect->get_parameter("_threshold").set_float(0.5);
while (gs_effect_loop(sdf_effect->get_object(), "Draw")) {
gs_draw_sprite(this->m_sdf_texture->get_object(), 0, baseW, baseH);
}
}
this->m_sdf_write.swap(this->m_sdf_read);
this->m_sdf_read->get_texture(this->m_sdf_texture);
if (!this->m_sdf_texture) {
throw std::exception("SDF Backbuffer empty");
}
}
}
{
std::shared_ptr<gs::effect> shadow_effect =
filter::shadow_sdf::shadow_sdf_factory::get()->get_sdf_shadow_effect();
if (!shadow_effect) {
throw std::exception("Shadow Effect no loaded");
}
gs_set_cull_mode(GS_NEITHER);
gs_reset_blend_state();
gs_enable_blending(true);
gs_blend_function(GS_BLEND_SRCALPHA, GS_BLEND_INVSRCALPHA);
gs_enable_depth_test(false);
gs_enable_stencil_test(false);
gs_enable_stencil_write(false);
gs_enable_color(true, true, true, true);
shadow_effect->get_parameter("_sdf").set_texture(this->m_sdf_texture);
shadow_effect->get_parameter("_image").set_texture(this->m_source_texture);
shadow_effect->get_parameter("_threshold").set_float(0.5f);
if (this->m_inner_shadow) {
shadow_effect->get_parameter("_inner_min").set_float(this->m_inner_range_min);
shadow_effect->get_parameter("_inner_max").set_float(this->m_inner_range_max);
shadow_effect->get_parameter("_inner_offset")
.set_float2(this->m_inner_offset_x / float_t(baseW), this->m_inner_offset_y / float_t(baseH));
shadow_effect->get_parameter("_inner_color")
.set_float4((this->m_inner_color & 0xFF) / 255.0f, ((this->m_inner_color >> 8) & 0xFF) / 255.0f,
((this->m_inner_color >> 16) & 0xFF) / 255.0f,
((this->m_inner_color >> 24) & 0xFF) / 255.0f);
} else {
shadow_effect->get_parameter("_inner_min").set_float(0.);
shadow_effect->get_parameter("_inner_max").set_float(0.);
shadow_effect->get_parameter("_inner_offset").set_float2(0., 0.);
shadow_effect->get_parameter("_inner_color").set_float4(0., 0., 0., 0.);
}
if (this->m_outer_shadow) {
shadow_effect->get_parameter("_outer_min").set_float(this->m_outer_range_min);
shadow_effect->get_parameter("_outer_max").set_float(this->m_outer_range_max);
shadow_effect->get_parameter("_outer_offset")
.set_float2(this->m_outer_offset_x / float_t(baseW), this->m_outer_offset_y / float_t(baseH));
shadow_effect->get_parameter("_outer_color")
.set_float4((this->m_outer_color & 0xFF) / 255.0f, ((this->m_outer_color >> 8) & 0xFF) / 255.0f,
((this->m_outer_color >> 16) & 0xFF) / 255.0f,
((this->m_outer_color >> 24) & 0xFF) / 255.0f);
} else {
shadow_effect->get_parameter("_outer_min").set_float(0.);
shadow_effect->get_parameter("_outer_max").set_float(0.);
shadow_effect->get_parameter("_outer_offset").set_float2(0., 0.);
shadow_effect->get_parameter("_outer_color").set_float4(0., 0., 0., 0.);
}
while (gs_effect_loop(shadow_effect->get_object(), "Draw")) {
gs_draw_sprite(this->m_source_texture->get_object(), 0, baseW, baseH);
}
}
} catch (...) {
gs_reset_blend_state();
gs_enable_depth_test(false);
obs_source_skip_video_filter(this->m_self);
return;
}
gs_reset_blend_state();
gs_enable_depth_test(false);
this->m_last_tick = this->m_tick;
}
filter::shadow_sdf::shadow_sdf_factory::shadow_sdf_factory()
{
memset(&source_info, 0, sizeof(obs_source_info));
source_info.id = "obs-stream-effects-filter-shadow-sdf";
source_info.type = OBS_SOURCE_TYPE_FILTER;
source_info.output_flags = OBS_SOURCE_VIDEO;
source_info.get_name = get_name;
source_info.get_defaults = get_defaults;
source_info.get_properties = get_properties;
source_info.create = create;
source_info.destroy = destroy;
source_info.update = update;
source_info.activate = activate;
source_info.deactivate = deactivate;
source_info.video_tick = video_tick;
source_info.video_render = video_render;
obs_register_source(&source_info);
}
filter::shadow_sdf::shadow_sdf_factory::~shadow_sdf_factory() {}
void filter::shadow_sdf::shadow_sdf_factory::on_list_fill()
{
{
char* file = obs_module_file("effects/sdf-generator.effect");
try {
sdf_generator_effect = std::make_shared<gs::effect>(file);
} catch (std::runtime_error ex) {
P_LOG_ERROR("<filter-shadow> Loading effect '%s' failed with error(s): %s", file, ex.what());
}
bfree(file);
}
{
char* file = obs_module_file("effects/sdf-shadow.effect");
try {
sdf_shadow_effect = std::make_shared<gs::effect>(file);
} catch (std::runtime_error ex) {
P_LOG_ERROR("<filter-shadow> Loading effect '%s' failed with error(s): %s", file, ex.what());
}
bfree(file);
}
}
void filter::shadow_sdf::shadow_sdf_factory::on_list_empty()
{
sdf_generator_effect.reset();
sdf_shadow_effect.reset();
}
void* filter::shadow_sdf::shadow_sdf_factory::create(obs_data_t* data, obs_source_t* parent)
{
if (get()->sources.empty()) {
get()->on_list_fill();
}
filter::shadow_sdf::shadow_sdf_instance* ptr = new filter::shadow_sdf::shadow_sdf_instance(data, parent);
get()->sources.push_back(ptr);
return ptr;
}
void filter::shadow_sdf::shadow_sdf_factory::destroy(void* inptr)
{
filter::shadow_sdf::shadow_sdf_instance* ptr = reinterpret_cast<filter::shadow_sdf::shadow_sdf_instance*>(inptr);
get()->sources.remove(ptr);
if (get()->sources.empty()) {
get()->on_list_empty();
}
}
void filter::shadow_sdf::shadow_sdf_factory::get_defaults(obs_data_t* data)
{
obs_data_set_bool(data, P_INNER, false);
obs_data_set_double(data, P_INNER_RANGE_MINIMUM, 0.0);
obs_data_set_double(data, P_INNER_RANGE_MAXIMUM, 4.0);
obs_data_set_double(data, P_INNER_OFFSET_X, 0.0);
obs_data_set_double(data, P_INNER_OFFSET_Y, 0.0);
obs_data_set_int(data, P_INNER_COLOR, 0x00000000);
obs_data_set_double(data, P_INNER_ALPHA, 100.0);
obs_data_set_bool(data, P_OUTER, false);
obs_data_set_double(data, P_OUTER_RANGE_MINIMUM, 0.0);
obs_data_set_double(data, P_OUTER_RANGE_MAXIMUM, 4.0);
obs_data_set_double(data, P_OUTER_OFFSET_X, 0.0);
obs_data_set_double(data, P_OUTER_OFFSET_Y, 0.0);
obs_data_set_int(data, P_OUTER_COLOR, 0x00000000);
obs_data_set_double(data, P_OUTER_ALPHA, 100.0);
}
obs_properties_t* filter::shadow_sdf::shadow_sdf_factory::get_properties(void* inptr)
{
return reinterpret_cast<filter::shadow_sdf::shadow_sdf_instance*>(inptr)->get_properties();
}
void filter::shadow_sdf::shadow_sdf_factory::update(void* inptr, obs_data_t* settings)
{
reinterpret_cast<filter::shadow_sdf::shadow_sdf_instance*>(inptr)->update(settings);
}
const char* filter::shadow_sdf::shadow_sdf_factory::get_name(void* inptr)
{
inptr;
return P_TRANSLATE(SOURCE_NAME);
}
uint32_t filter::shadow_sdf::shadow_sdf_factory::get_width(void* inptr)
{
return reinterpret_cast<filter::shadow_sdf::shadow_sdf_instance*>(inptr)->get_width();
}
uint32_t filter::shadow_sdf::shadow_sdf_factory::get_height(void* inptr)
{
return reinterpret_cast<filter::shadow_sdf::shadow_sdf_instance*>(inptr)->get_height();
}
void filter::shadow_sdf::shadow_sdf_factory::activate(void* inptr)
{
reinterpret_cast<filter::shadow_sdf::shadow_sdf_instance*>(inptr)->activate();
}
void filter::shadow_sdf::shadow_sdf_factory::deactivate(void* inptr)
{
reinterpret_cast<filter::shadow_sdf::shadow_sdf_instance*>(inptr)->deactivate();
}
void filter::shadow_sdf::shadow_sdf_factory::video_tick(void* inptr, float delta)
{
reinterpret_cast<filter::shadow_sdf::shadow_sdf_instance*>(inptr)->video_tick(delta);
}
void filter::shadow_sdf::shadow_sdf_factory::video_render(void* inptr, gs_effect_t* effect)
{
reinterpret_cast<filter::shadow_sdf::shadow_sdf_instance*>(inptr)->video_render(effect);
}
std::shared_ptr<gs::effect> filter::shadow_sdf::shadow_sdf_factory::get_sdf_generator_effect()
{
return sdf_generator_effect;
}
std::shared_ptr<gs::effect> filter::shadow_sdf::shadow_sdf_factory::get_sdf_shadow_effect()
{
return sdf_shadow_effect;
}
static filter::shadow_sdf::shadow_sdf_factory* factory_instance = nullptr;
void filter::shadow_sdf::shadow_sdf_factory::initialize()
{
factory_instance = new filter::shadow_sdf::shadow_sdf_factory();
}
void filter::shadow_sdf::shadow_sdf_factory::finalize()
{
delete factory_instance;
}
filter::shadow_sdf::shadow_sdf_factory* filter::shadow_sdf::shadow_sdf_factory::get()
{
return factory_instance;
}

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/*
* Modern effects for a modern Streamer
* Copyright (C) 2017-2018 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
*/
#ifndef OBS_STREAM_EFFECTS_FILTER_SHADOW_SDF_HPP
#define OBS_STREAM_EFFECTS_FILTER_SHADOW_SDF_HPP
#pragma once
#include <memory>
#include "gs-effect.h"
#include "gs-rendertarget.h"
#include "gs-sampler.h"
#include "gs-texture.h"
#include "gs-vertexbuffer.h"
#include "plugin.h"
extern "C" {
#include <obs.h>
}
namespace filter {
namespace shadow_sdf {
class shadow_sdf_instance {
obs_source_t* m_self;
std::shared_ptr<gs::rendertarget> m_input;
std::shared_ptr<gs::rendertarget> m_sdf_write, m_sdf_read;
std::shared_ptr<gs::texture> m_source_texture;
std::shared_ptr<gs::texture> m_sdf_texture;
float_t m_tick = 0.;
float_t m_last_tick = 0.;
bool m_inner_shadow;
float_t m_inner_range_min;
float_t m_inner_range_max;
float_t m_inner_offset_x;
float_t m_inner_offset_y;
uint32_t m_inner_color;
bool m_outer_shadow;
float_t m_outer_range_min;
float_t m_outer_range_max;
float_t m_outer_offset_x;
float_t m_outer_offset_y;
uint32_t m_outer_color;
static bool cb_modified_inside(void* ptr, obs_properties_t* props, obs_property* prop,
obs_data_t* settings);
static bool cb_modified_outside(void* ptr, obs_properties_t* props, obs_property* prop,
obs_data_t* settings);
public:
shadow_sdf_instance(obs_data_t* settings, obs_source_t* self);
~shadow_sdf_instance();
obs_properties_t* get_properties();
void update(obs_data_t*);
uint32_t get_width();
uint32_t get_height();
void activate();
void deactivate();
void video_tick(float);
void video_render(gs_effect_t*);
};
class shadow_sdf_factory {
obs_source_info source_info;
std::list<shadow_sdf_instance*> sources;
std::shared_ptr<gs::effect> sdf_generator_effect;
std::shared_ptr<gs::effect> sdf_shadow_effect;
private:
shadow_sdf_factory();
~shadow_sdf_factory();
void on_list_fill();
void on_list_empty();
protected:
static void* create(obs_data_t* settings, obs_source_t* self);
static void destroy(void* source);
static void get_defaults(obs_data_t* settings);
static obs_properties_t* get_properties(void* source);
static void update(void* source, obs_data_t* settings);
static const char* get_name(void* source);
static uint32_t get_width(void* source);
static uint32_t get_height(void* source);
static void activate(void* source);
static void deactivate(void* source);
static void video_tick(void* source, float delta);
static void video_render(void* source, gs_effect_t* effect);
public:
std::shared_ptr<gs::effect> get_sdf_generator_effect();
std::shared_ptr<gs::effect> get_sdf_shadow_effect();
public: // Singleton
static void initialize();
static void finalize();
static shadow_sdf_factory* get();
};
} // namespace shadow_sdf
} // namespace filter
#endif