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filter-sdf-effects: Support for scaling SDF Texture Size

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This allows increasing or decreasing the accuracy of the Signed Distance Field at runtime without requiring the initial source to be resized. Use case for this would be small text where the higher quality would only be noticable on the shadow and not the text itself.
This commit is contained in:
Michael Fabian 'Xaymar' Dirks 2019-01-30 03:12:12 +01:00
parent 493ef5da23
commit 75009c617a
3 changed files with 58 additions and 19 deletions
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2
data/locale/en-US.ini
View file

@ -138,6 +138,8 @@ Filter.SDFEffects.Shadow.Outer.Offset.X="Outer Offset X"
Filter.SDFEffects.Shadow.Outer.Offset.Y="Outer Offset Y"
Filter.SDFEffects.Shadow.Outer.Color="Outer Color"
Filter.SDFEffects.Shadow.Outer.Alpha="Outer Alpha"
Filter.SDFEffects.SDF.Scale="SDF Texture Scale"
Filter.SDFEffects.SDF.Scale.Description="Percentage to scale the SDF Texture Size by, relative to the Source Size.\nA higher value results in better quality, but slower updates,\n while lower values result in faster updates, but lower quality."
# Filter - Shape
Filter.Shape="Shape"

71
source/filter-sdf-effects.cpp
View file

@ -39,6 +39,8 @@
#define P_SHADOW_OUTER_COLOR "Filter.SDFEffects.Shadow.Outer.Color"
#define P_SHADOW_OUTER_ALPHA "Filter.SDFEffects.Shadow.Outer.Alpha"
#define P_SDF_SCALE "Filter.SDFEffects.SDF.Scale"
// Initializer & Finalizer
INITIALIZER(filterShadowFactoryInitializer)
{
@ -137,21 +139,24 @@ void filter::sdf_effects::sdf_effects_factory::destroy(void* inptr)
void filter::sdf_effects::sdf_effects_factory::get_defaults(obs_data_t* data)
{
obs_data_set_bool(data, P_SHADOW_INNER, false);
obs_data_set_double(data, P_SHADOW_INNER_RANGE_MINIMUM, 0.0);
obs_data_set_double(data, P_SHADOW_INNER_RANGE_MAXIMUM, 4.0);
obs_data_set_double(data, P_SHADOW_INNER_OFFSET_X, 0.0);
obs_data_set_double(data, P_SHADOW_INNER_OFFSET_Y, 0.0);
obs_data_set_int(data, P_SHADOW_INNER_COLOR, 0x00000000);
obs_data_set_double(data, P_SHADOW_INNER_ALPHA, 100.0);
obs_data_set_default_bool(data, P_SHADOW_INNER, false);
obs_data_set_default_double(data, P_SHADOW_INNER_RANGE_MINIMUM, 0.0);
obs_data_set_default_double(data, P_SHADOW_INNER_RANGE_MAXIMUM, 4.0);
obs_data_set_default_double(data, P_SHADOW_INNER_OFFSET_X, 0.0);
obs_data_set_default_double(data, P_SHADOW_INNER_OFFSET_Y, 0.0);
obs_data_set_default_int(data, P_SHADOW_INNER_COLOR, 0x00000000);
obs_data_set_default_double(data, P_SHADOW_INNER_ALPHA, 100.0);
obs_data_set_bool(data, P_SHADOW_OUTER, false);
obs_data_set_double(data, P_SHADOW_OUTER_RANGE_MINIMUM, 0.0);
obs_data_set_double(data, P_SHADOW_OUTER_RANGE_MAXIMUM, 4.0);
obs_data_set_double(data, P_SHADOW_OUTER_OFFSET_X, 0.0);
obs_data_set_double(data, P_SHADOW_OUTER_OFFSET_Y, 0.0);
obs_data_set_int(data, P_SHADOW_OUTER_COLOR, 0x00000000);
obs_data_set_double(data, P_SHADOW_OUTER_ALPHA, 100.0);
obs_data_set_default_bool(data, P_SHADOW_OUTER, false);
obs_data_set_default_double(data, P_SHADOW_OUTER_RANGE_MINIMUM, 0.0);
obs_data_set_default_double(data, P_SHADOW_OUTER_RANGE_MAXIMUM, 4.0);
obs_data_set_default_double(data, P_SHADOW_OUTER_OFFSET_X, 0.0);
obs_data_set_default_double(data, P_SHADOW_OUTER_OFFSET_Y, 0.0);
obs_data_set_default_int(data, P_SHADOW_OUTER_COLOR, 0x00000000);
obs_data_set_default_double(data, P_SHADOW_OUTER_ALPHA, 100.0);
obs_data_set_default_bool(data, S_ADVANCED, false);
obs_data_set_default_double(data, P_SDF_SCALE, 100.0);
}
obs_properties_t* filter::sdf_effects::sdf_effects_factory::get_properties(void* inptr)
@ -235,8 +240,16 @@ bool filter::sdf_effects::sdf_effects_instance::cb_modified_outside(void*, obs_p
return true;
}
bool filter::sdf_effects::sdf_effects_instance::cb_modified_advanced(void* ptr, obs_properties_t* props,
obs_property* prop, obs_data_t* settings)
{
bool show_advanced = obs_data_get_bool(settings, S_ADVANCED);
obs_property_set_visible(obs_properties_get(props, P_SDF_SCALE), show_advanced);
return true;
}
filter::sdf_effects::sdf_effects_instance::sdf_effects_instance(obs_data_t* settings, obs_source_t* self)
: m_self(self), m_source_rendered(false)
: m_self(self), m_source_rendered(false), m_sdf_scale(1.0)
{
this->m_source_rt = std::make_shared<gs::rendertarget>(GS_RGBA, GS_ZS_NONE);
this->m_sdf_write = std::make_shared<gs::rendertarget>(GS_RGBA32F, GS_ZS_NONE);
@ -311,6 +324,13 @@ obs_properties_t* filter::sdf_effects::sdf_effects_instance::get_properties()
0.1);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_SHADOW_OUTER_ALPHA)));
p = obs_properties_add_bool(props, S_ADVANCED, P_TRANSLATE(S_ADVANCED));
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(S_ADVANCED)));
obs_property_set_modified_callback2(p, cb_modified_advanced, this);
p = obs_properties_add_float_slider(props, P_SDF_SCALE, P_TRANSLATE(P_SDF_SCALE), 0.1, 500.0, 0.1);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_SDF_SCALE)));
return props;
}
@ -331,6 +351,8 @@ void filter::sdf_effects::sdf_effects_instance::update(obs_data_t* data)
this->m_outer_offset_y = float_t(obs_data_get_double(data, P_SHADOW_OUTER_OFFSET_Y));
this->m_outer_color = (obs_data_get_int(data, P_SHADOW_OUTER_COLOR) & 0x00FFFFFF)
| (int32_t(obs_data_get_double(data, P_SHADOW_OUTER_ALPHA) * 2.55) << 24);
this->m_sdf_scale = double_t(obs_data_get_double(data, P_SDF_SCALE) / 100.0);
}
uint32_t filter::sdf_effects::sdf_effects_instance::get_width()
@ -413,18 +435,29 @@ void filter::sdf_effects::sdf_effects_instance::video_render(gs_effect_t*)
throw std::runtime_error("SDF Effect no loaded");
}
// Scale SDF Size
double_t sdfW, sdfH;
sdfW = baseW * m_sdf_scale;
sdfH = baseH * m_sdf_scale;
if (sdfW <= 1) {
sdfW = 1.0;
}
if (sdfH <= 1) {
sdfH = 1.0;
}
{
auto op = m_sdf_write->render(baseW, baseH);
gs_ortho(0, (float)baseW, 0, (float)baseH, -1, 1);
auto op = m_sdf_write->render(sdfW, sdfH);
gs_ortho(0, (float)sdfW, 0, (float)sdfH, -1, 1);
gs_clear(GS_CLEAR_COLOR | GS_CLEAR_DEPTH, &color_transparent, 0, 0);
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("_size").set_float2(float_t(sdfW), float_t(sdfH));
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);
gs_draw_sprite(this->m_sdf_texture->get_object(), 0, sdfW, sdfH);
}
}
this->m_sdf_write.swap(this->m_sdf_read);

4
source/filter-sdf-effects.hpp
View file

@ -95,6 +95,7 @@ namespace filter {
// Distance Field
std::shared_ptr<gs::rendertarget> m_sdf_write, m_sdf_read;
std::shared_ptr<gs::texture> m_sdf_texture;
double_t m_sdf_scale;
bool m_inner_shadow;
float_t m_inner_range_min;
@ -115,6 +116,9 @@ namespace filter {
static bool cb_modified_outside(void* ptr, obs_properties_t* props, obs_property* prop,
obs_data_t* settings);
static bool cb_modified_advanced(void* ptr, obs_properties_t* props, obs_property* prop,
obs_data_t* settings);
public:
sdf_effects_instance(obs_data_t* settings, obs_source_t* self);
~sdf_effects_instance();