obs-StreamFX/source/filter-blur.cpp
Michael Fabian Dirks 4dbf414214 effects, filter-blur: Precalculated Kernel, Formatting, Rendering and more
Filter:
* Massively improved Rendering loop to reduce overhead and provide cleaner code.

Gaussian Blur:
* Added precalculated Kernels using Textures. Slightly reduced GPU load.
* Added basic attempt at a Nvidia o(n/2+1) gaussian blur implementation.
* Fix up LOD for texture sampling.

Box Blur:
* Halved loop count.
2017-08-20 00:25:05 +02:00

774 lines
23 KiB
C++

/*
* 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-blur.h"
#include "strings.h"
extern "C" {
#pragma warning (push)
#pragma warning (disable: 4201)
#include "libobs/util/platform.h"
#include "libobs/graphics/graphics.h"
#include "libobs/graphics/matrix4.h"
#pragma warning (pop)
}
#include <math.h>
#include <map>
enum ColorFormat : uint64_t {
RGB,
YUV, // 701
};
struct g_blurEffect {
gs_effect_t* effect;
std::vector<gs_texture_t*> kernels;
};
static g_blurEffect g_gaussianBlur, g_bilateralBlur;
static gs_effect_t* g_boxBlurEffect, *g_colorConversionEffect;
static size_t g_maxKernelSize = 25;
const double_t pi = 3.1415926535897932384626433832795;
const double_t twopi = 6.283185307179586476925286766559;
const double_t twopisqr = 2.506628274631000502415765284811;
const double_t half = 0.5;
double_t gaussian1D(double_t x, double_t o) {
double_t c = (x / o);
double_t b = exp(-half * c * c);
double_t a = (1.0 / (o * twopisqr));
return a * b;
}
double_t bilateral(double_t x, double_t o) {
return 0.39894 * exp(-0.5 * (x * x) / (o * o)) / o;
}
static void makeGaussianKernels() {
g_gaussianBlur.kernels.resize(g_maxKernelSize);
std::vector<float_t> textureBuffer;
std::vector<double_t> mathBuffer;
for (size_t n = 1; n <= g_maxKernelSize; n++) {
textureBuffer.resize(n * 4);
mathBuffer.resize(n);
// Calculate and normalize
double_t sum = 0.0;
for (size_t p = 0; p < n; p++) {
double_t g = gaussian1D(double_t(p), double_t(n));
mathBuffer[p] = g;
sum += g;
if (p != 0)
sum += g;
}
for (size_t p = 0; p < n; p++) {
mathBuffer[p] /= sum;
}
// Build Texture
for (size_t p = 0; p < n; p++) {
textureBuffer[p * 4] =
textureBuffer[p * 4 + 1] =
textureBuffer[p * 4 + 2] =
textureBuffer[p * 4 + 3] = (float_t)mathBuffer[p];
}
uint8_t* data = reinterpret_cast<uint8_t*>(textureBuffer.data());
const uint8_t** pdata = const_cast<const uint8_t**>(&data);
gs_texture_t* tex = gs_texture_create(uint32_t(n), 1, gs_color_format::GS_RGBA32F, 1, pdata, 0);
if (!tex) {
P_LOG_ERROR("<filter-blur> Failed to create gaussian kernel for %d width.", n);
} else {
g_gaussianBlur.kernels[n - 1] = tex;
}
}
}
Filter::Blur::Blur() {
memset(&sourceInfo, 0, sizeof(obs_source_info));
sourceInfo.id = "obs-stream-effects-filter-blur";
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.show = show;
sourceInfo.hide = hide;
sourceInfo.video_tick = video_tick;
sourceInfo.video_render = video_render;
obs_enter_graphics();
// Blur Effects
/// Box Blur
{
char* loadError = nullptr;
char* file = obs_module_file("effects/box-blur.effect");
g_boxBlurEffect = gs_effect_create_from_file(file, &loadError);
bfree(file);
if (loadError != nullptr) {
P_LOG_ERROR("<filter-blur> Loading box-blur effect failed with error(s): %s", loadError);
bfree(loadError);
} else if (!g_boxBlurEffect) {
P_LOG_ERROR("<filter-blur> Loading box-blur effect failed with unspecified error.");
}
}
/// Gaussian Blur
{
gs_effect_t* effect;
char* loadError = nullptr;
char* file = obs_module_file("effects/gaussian-blur.effect");
effect = gs_effect_create_from_file(file, &loadError);
bfree(file);
if (loadError != nullptr) {
P_LOG_ERROR("<filter-blur> Loading gaussian blur effect failed with error(s): %s", loadError);
bfree(loadError);
} else if (!effect) {
P_LOG_ERROR("<filter-blur> Loading gaussian blur effect failed with unspecified error.");
} else {
g_gaussianBlur.effect = effect;
}
}
/// Bilateral Blur
{
gs_effect_t* effect;
char* loadError = nullptr;
char* file = obs_module_file("effects/bilateral-blur.effect");
effect = gs_effect_create_from_file(file, &loadError);
bfree(file);
if (loadError != nullptr) {
P_LOG_ERROR("<filter-blur> Loading bilateral blur effect failed with error(s): %s", loadError);
bfree(loadError);
} else if (!effect) {
P_LOG_ERROR("<filter-blur> Loading bilateral blur effect failed with unspecified error.");
} else {
g_bilateralBlur.effect = effect;
makeGaussianKernels();
}
}
// Color Conversion
{
char* loadError = nullptr;
char* file = obs_module_file("effects/color-conversion.effect");
g_colorConversionEffect = gs_effect_create_from_file(file, &loadError);
bfree(file);
if (loadError != nullptr) {
P_LOG_ERROR("<filter-blur> Loading color conversion effect failed with error(s): %s", loadError);
bfree(loadError);
} else if (!g_colorConversionEffect) {
P_LOG_ERROR("<filter-blur> Loading color conversion effect failed with unspecified error.");
}
}
obs_leave_graphics();
if (g_boxBlurEffect && g_gaussianBlur.effect && g_bilateralBlur.effect && g_colorConversionEffect)
obs_register_source(&sourceInfo);
}
Filter::Blur::~Blur() {
obs_enter_graphics();
gs_effect_destroy(g_colorConversionEffect);
gs_effect_destroy(g_bilateralBlur.effect);
gs_effect_destroy(g_gaussianBlur.effect);
for (size_t n = 1; n <= g_maxKernelSize; n++) {
if (g_gaussianBlur.kernels.size() > 0)
gs_texture_destroy(g_gaussianBlur.kernels[n - 1]);
}
gs_effect_destroy(g_boxBlurEffect);
obs_leave_graphics();
}
const char * Filter::Blur::get_name(void *) {
return P_TRANSLATE(S_FILTER_BLUR);
}
void Filter::Blur::get_defaults(obs_data_t *data) {
obs_data_set_default_int(data, S_FILTER_BLUR_TYPE, Filter::Blur::Type::Box);
obs_data_set_default_int(data, S_FILTER_BLUR_SIZE, 5);
// Bilateral Only
obs_data_set_default_double(data, S_FILTER_BLUR_BILATERAL_SMOOTHING, 50.0);
obs_data_set_default_double(data, S_FILTER_BLUR_BILATERAL_SHARPNESS, 90.0);
// Advanced
obs_data_set_default_bool(data, S_ADVANCED, false);
obs_data_set_default_int(data, S_FILTER_BLUR_COLORFORMAT, ColorFormat::RGB);
}
obs_properties_t * Filter::Blur::get_properties(void *) {
obs_properties_t *pr = obs_properties_create();
obs_property_t* p = NULL;
p = obs_properties_add_list(pr, S_FILTER_BLUR_TYPE, P_TRANSLATE(S_FILTER_BLUR_TYPE),
obs_combo_type::OBS_COMBO_TYPE_LIST, obs_combo_format::OBS_COMBO_FORMAT_INT);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(S_FILTER_BLUR_TYPE)));
obs_property_set_modified_callback(p, modified_properties);
obs_property_list_add_int(p, P_TRANSLATE(S_FILTER_BLUR_TYPE_BOX),
Filter::Blur::Type::Box);
obs_property_list_add_int(p, P_TRANSLATE(S_FILTER_BLUR_TYPE_GAUSSIAN),
Filter::Blur::Type::Gaussian);
obs_property_list_add_int(p, P_TRANSLATE(S_FILTER_BLUR_TYPE_BILATERAL),
Filter::Blur::Type::Bilateral);
p = obs_properties_add_int_slider(pr, S_FILTER_BLUR_SIZE,
P_TRANSLATE(S_FILTER_BLUR_SIZE), 1, 25, 1);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(S_FILTER_BLUR_SIZE)));
obs_property_set_modified_callback(p, modified_properties);
// Bilateral Only
p = obs_properties_add_float_slider(pr, S_FILTER_BLUR_BILATERAL_SMOOTHING,
P_TRANSLATE(S_FILTER_BLUR_BILATERAL_SMOOTHING), 0.01, 100.0, 0.01);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(S_FILTER_BLUR_BILATERAL_SMOOTHING)));
p = obs_properties_add_float_slider(pr, S_FILTER_BLUR_BILATERAL_SHARPNESS,
P_TRANSLATE(S_FILTER_BLUR_BILATERAL_SHARPNESS), 0, 99.99, 0.01);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(S_FILTER_BLUR_BILATERAL_SHARPNESS)));
// Advanced
p = obs_properties_add_bool(pr, S_ADVANCED, P_TRANSLATE(S_ADVANCED));
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(S_ADVANCED)));
obs_property_set_modified_callback(p, modified_properties);
p = obs_properties_add_list(pr, S_FILTER_BLUR_COLORFORMAT,
P_TRANSLATE(S_FILTER_BLUR_COLORFORMAT),
obs_combo_type::OBS_COMBO_TYPE_LIST, obs_combo_format::OBS_COMBO_FORMAT_INT);
obs_property_set_long_description(p,
P_TRANSLATE(P_DESC(S_FILTER_BLUR_COLORFORMAT)));
obs_property_list_add_int(p, "RGB",
ColorFormat::RGB);
obs_property_list_add_int(p, "YUV",
ColorFormat::YUV);
return pr;
}
bool Filter::Blur::modified_properties(obs_properties_t *pr, obs_property_t *, obs_data_t *d) {
bool showBilateral = false;
switch (obs_data_get_int(d, S_FILTER_BLUR_TYPE)) {
case Filter::Blur::Type::Box:
break;
case Filter::Blur::Type::Gaussian:
break;
case Filter::Blur::Type::Bilateral:
showBilateral = true;
break;
}
// Bilateral Blur
obs_property_set_visible(obs_properties_get(pr, S_FILTER_BLUR_BILATERAL_SMOOTHING),
showBilateral);
obs_property_set_visible(obs_properties_get(pr, S_FILTER_BLUR_BILATERAL_SHARPNESS),
showBilateral);
// Advanced
bool showAdvanced = false;
if (obs_data_get_bool(d, S_ADVANCED))
showAdvanced = true;
obs_property_set_visible(obs_properties_get(pr, S_FILTER_BLUR_COLORFORMAT),
showAdvanced);
return true;
}
void * Filter::Blur::create(obs_data_t *data, obs_source_t *source) {
return new Instance(data, source);
}
void Filter::Blur::destroy(void *ptr) {
delete reinterpret_cast<Instance*>(ptr);
}
uint32_t Filter::Blur::get_width(void *ptr) {
return reinterpret_cast<Instance*>(ptr)->get_width();
}
uint32_t Filter::Blur::get_height(void *ptr) {
return reinterpret_cast<Instance*>(ptr)->get_height();
}
void Filter::Blur::update(void *ptr, obs_data_t *data) {
reinterpret_cast<Instance*>(ptr)->update(data);
}
void Filter::Blur::activate(void *ptr) {
reinterpret_cast<Instance*>(ptr)->activate();
}
void Filter::Blur::deactivate(void *ptr) {
reinterpret_cast<Instance*>(ptr)->deactivate();
}
void Filter::Blur::show(void *ptr) {
reinterpret_cast<Instance*>(ptr)->show();
}
void Filter::Blur::hide(void *ptr) {
reinterpret_cast<Instance*>(ptr)->hide();
}
void Filter::Blur::video_tick(void *ptr, float time) {
reinterpret_cast<Instance*>(ptr)->video_tick(time);
}
void Filter::Blur::video_render(void *ptr, gs_effect_t *effect) {
reinterpret_cast<Instance*>(ptr)->video_render(effect);
}
Filter::Blur::Instance::Instance(obs_data_t *data, obs_source_t *context) : m_source(context) {
obs_enter_graphics();
m_effect = g_boxBlurEffect;
m_primaryRT = gs_texrender_create(GS_RGBA, GS_ZS_NONE);
m_secondaryRT = gs_texrender_create(GS_RGBA, GS_ZS_NONE);
m_rtHorizontal = gs_texrender_create(GS_RGBA, GS_ZS_NONE);
m_rtVertical = gs_texrender_create(GS_RGBA, GS_ZS_NONE);
obs_leave_graphics();
update(data);
}
Filter::Blur::Instance::~Instance() {
obs_enter_graphics();
gs_texrender_destroy(m_primaryRT);
gs_texrender_destroy(m_secondaryRT);
gs_texrender_destroy(m_rtHorizontal);
gs_texrender_destroy(m_rtVertical);
obs_leave_graphics();
}
void Filter::Blur::Instance::update(obs_data_t *data) {
m_type = (Type)obs_data_get_int(data, S_FILTER_BLUR_TYPE);
switch (m_type) {
case Filter::Blur::Type::Box:
m_effect = g_boxBlurEffect;
break;
case Filter::Blur::Type::Gaussian:
m_effect = g_gaussianBlur.effect;
break;
case Filter::Blur::Type::Bilateral:
m_effect = g_bilateralBlur.effect;
break;
}
m_size = (uint64_t)obs_data_get_int(data, S_FILTER_BLUR_SIZE);
// Bilateral Blur
m_bilateralSmoothing = obs_data_get_double(data, S_FILTER_BLUR_BILATERAL_SMOOTHING) / 100.0;
m_bilateralSharpness = obs_data_get_double(data, S_FILTER_BLUR_BILATERAL_SHARPNESS) / 100.0;
// Advanced
m_colorFormat = obs_data_get_int(data, S_FILTER_BLUR_COLORFORMAT);
}
uint32_t Filter::Blur::Instance::get_width() {
return 0;
}
uint32_t Filter::Blur::Instance::get_height() {
return 0;
}
void Filter::Blur::Instance::activate() {}
void Filter::Blur::Instance::deactivate() {}
void Filter::Blur::Instance::show() {}
void Filter::Blur::Instance::hide() {}
void Filter::Blur::Instance::video_tick(float) {}
void Filter::Blur::Instance::video_render(gs_effect_t *effect) {
bool failed = false;
vec4 black; vec4_zero(&black);
obs_source_t
*parent = obs_filter_get_parent(m_source),
*target = obs_filter_get_target(m_source);
uint32_t
baseW = obs_source_get_base_width(target),
baseH = obs_source_get_base_height(target);
// Skip rendering if our target, parent or context is not valid.
if (!target || !parent || !m_source || !m_effect || !m_primaryRT || !m_technique
|| !baseW || !baseH) {
obs_source_skip_video_filter(m_source);
return;
}
gs_effect_t* defaultEffect = obs_get_base_effect(obs_base_effect::OBS_EFFECT_DEFAULT);
gs_texture_t *sourceTexture = nullptr;
#pragma region Source To Texture
gs_texrender_reset(m_primaryRT);
if (!gs_texrender_begin(m_primaryRT, baseW, baseH)) {
P_LOG_ERROR("<filter-blur> Failed to set up base texture.");
obs_source_skip_video_filter(m_source);
return;
} else {
gs_ortho(0, (float)baseW, 0, (float)baseH, -1, 1);
// Clear to Black
vec4 black;
vec4_zero(&black);
gs_clear(GS_CLEAR_COLOR | GS_CLEAR_DEPTH, &black, 0, 0);
// Set up camera stuff
gs_set_cull_mode(GS_NEITHER);
gs_reset_blend_state();
gs_enable_blending(false);
gs_blend_function(GS_BLEND_ONE, 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);
// Render
if (obs_source_process_filter_begin(m_source, GS_RGBA, OBS_NO_DIRECT_RENDERING)) {
obs_source_process_filter_end(m_source, effect ? effect : defaultEffect, baseW, baseH);
} else {
P_LOG_ERROR("<filter-blur> Unable to render source.");
failed = true;
}
gs_texrender_end(m_primaryRT);
}
if (failed) {
obs_source_skip_video_filter(m_source);
return;
}
sourceTexture = gs_texrender_get_texture(m_primaryRT);
if (!sourceTexture) {
P_LOG_ERROR("<filter-blur> Failed to get source texture.");
obs_source_skip_video_filter(m_source);
return;
}
#pragma endregion Source To Texture
// Conversion
#pragma region RGB -> YUV
if (m_colorFormat == ColorFormat::YUV) {
gs_texrender_reset(m_secondaryRT);
if (!gs_texrender_begin(m_secondaryRT, baseW, baseH)) {
P_LOG_ERROR("<filter-blur> Failed to set up base texture.");
obs_source_skip_video_filter(m_source);
return;
} else {
gs_ortho(0, (float)baseW, 0, (float)baseH, -1, 1);
// Clear to Black
gs_clear(GS_CLEAR_COLOR | GS_CLEAR_DEPTH, &black, 0, 0);
// Set up camera stuff
gs_set_cull_mode(GS_NEITHER);
gs_reset_blend_state();
gs_enable_blending(false);
gs_blend_function(GS_BLEND_ONE, 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_eparam_t* param = gs_effect_get_param_by_name(g_colorConversionEffect, "image");
if (!param) {
P_LOG_ERROR("<filter-blur:Final> Failed to set image param.");
failed = true;
} else {
gs_effect_set_texture(param, sourceTexture);
}
while (gs_effect_loop(g_colorConversionEffect, "RGBToYUV")) {
gs_draw_sprite(sourceTexture, 0, baseW, baseH);
}
gs_texrender_end(m_secondaryRT);
}
if (failed) {
obs_source_skip_video_filter(m_source);
return;
}
sourceTexture = gs_texrender_get_texture(m_secondaryRT);
if (!sourceTexture) {
P_LOG_ERROR("<filter-blur> Failed to get source texture.");
obs_source_skip_video_filter(m_source);
return;
}
}
#pragma endregion RGB -> YUV
#pragma region Blur
// Set up camera stuff
gs_set_cull_mode(GS_NEITHER);
gs_reset_blend_state();
gs_enable_blending(true);
gs_blend_function(GS_BLEND_ONE, 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_texture_t* blurred = nullptr, *intermediate = sourceTexture;
std::tuple<const char*, gs_texrender_t*, float, float> kvs[] = {
std::make_tuple("Horizontal", m_rtHorizontal, 1.0f / baseW, 0.0f),
std::make_tuple("Vertical", m_rtVertical, 0.0f, 1.0f / baseH),
};
for (auto v : kvs) {
const char* name = std::get<0>(v);
gs_texrender_t* rt = std::get<1>(v);
float xpel = std::get<2>(v),
ypel = std::get<3>(v);
if (!apply_shared_param(intermediate, xpel, ypel))
break;
switch (m_type) {
case Gaussian:
apply_gaussian_param();
break;
case Bilateral:
apply_bilateral_param();
break;
}
gs_texrender_reset(rt);
if (!gs_texrender_begin(rt, baseW, baseH)) {
P_LOG_ERROR("<filter-blur:%s> Failed to begin rendering.", name);
break;
}
// Camera
gs_ortho(0, (float)baseW, 0, (float)baseH, -1, 1);
gs_clear(GS_CLEAR_COLOR | GS_CLEAR_DEPTH, &black, 0, 0);
// Render
while (gs_effect_loop(m_effect, "Draw")) {
gs_draw_sprite(intermediate, 0, baseW, baseH);
}
gs_texrender_end(rt);
intermediate = gs_texrender_get_texture(rt);
if (!intermediate) {
P_LOG_ERROR("<filter-blur:%s> Failed to get intermediate texture.",
name);
break;
}
blurred = intermediate;
}
if (blurred == nullptr) {
obs_source_skip_video_filter(m_source);
return;
}
#pragma endregion Blur
#pragma region YUV -> RGB or straight draw
// Draw final effect
{
gs_effect_t* finalEffect = defaultEffect;
const char* technique = "Draw";
if (m_colorFormat == ColorFormat::YUV) {
finalEffect = g_colorConversionEffect;
technique = "YUVToRGB";
}
// Set up camera stuff
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);
gs_eparam_t* param = gs_effect_get_param_by_name(finalEffect, "image");
if (!param) {
P_LOG_ERROR("<filter-blur:Final> Failed to set image param.");
failed = true;
} else {
gs_effect_set_texture(param, blurred);
}
while (gs_effect_loop(finalEffect, technique)) {
gs_draw_sprite(blurred, 0, baseW, baseH);
}
}
#pragma endregion YUV -> RGB or straight draw
if (failed) {
obs_source_skip_video_filter(m_source);
return;
}
}
gs_effect_param* gs_effect_get_param(gs_effect_t* effect, const char* name) {
gs_effect_param* p = gs_effect_get_param_by_name(effect, name);
if (!p)
P_LOG_ERROR("<filter-blur> Failed to find parameter %s in effect.", name);
return p;
}
bool gs_set_param_int(gs_effect_t* effect, const char* name, int value) {
gs_effect_param* p = nullptr;
if (nullptr != (p = gs_effect_get_param(effect, name))) {
gs_effect_set_int(p, value);
return true;
}
P_LOG_ERROR("<filter-blur> Failed to set value %d for parameter %s in"
" effect.", value, name);
return false;
}
bool gs_set_param_float(gs_effect_t* effect, const char* name, float value) {
gs_effect_param* p = nullptr;
if (nullptr != (p = gs_effect_get_param(effect, name))) {
gs_effect_set_float(p, value);
return true;
}
P_LOG_ERROR("<filter-blur> Failed to set value %f for parameter %s in"
" effect.", value, name);
return false;
}
bool gs_set_param_float2(gs_effect_t* effect, const char* name, vec2* value) {
gs_effect_param* p = nullptr;
if (nullptr != (p = gs_effect_get_param(effect, name))) {
gs_effect_set_vec2(p, value);
return true;
}
P_LOG_ERROR("<filter-blur> Failed to set value {%f,%f} for parameter %s"
" in effect.", value->x, value->y, name);
return false;
}
bool gs_set_param_float3(gs_effect_t* effect, const char* name, vec3* value) {
gs_effect_param* p = nullptr;
if (nullptr != (p = gs_effect_get_param(effect, name))) {
gs_effect_set_vec3(p, value);
return true;
}
P_LOG_ERROR("<filter-blur> Failed to set value {%f,%f,%f} for parameter"
"%s in effect.", value->x, value->y, value->z, name);
return false;
}
bool gs_set_param_float4(gs_effect_t* effect, const char* name, vec4* value) {
gs_effect_param* p = nullptr;
if (nullptr != (p = gs_effect_get_param(effect, name))) {
gs_effect_set_vec4(p, value);
return true;
}
P_LOG_ERROR("<filter-blur> Failed to set value {%f,%f,%f,%f} for"
" parameter %s in effect.", value->x, value->y, value->z,
value->w, name);
return false;
}
bool gs_set_param_texture(gs_effect_t* effect, const char* name, gs_texture_t* value) {
gs_effect_param* p = nullptr;
if (nullptr != (p = gs_effect_get_param(effect, name))) {
gs_effect_set_texture(p, value);
return true;
}
P_LOG_ERROR("<filter-blur> Failed to set texture for"
" parameter %s in effect.", name);
return false;
}
bool Filter::Blur::Instance::apply_shared_param(gs_texture_t* input, float texelX, float texelY) {
bool result = true;
result = result && gs_set_param_texture(m_effect, "u_image", input);
vec2 imageSize;
vec2_set(&imageSize,
(float)gs_texture_get_width(input),
(float)gs_texture_get_height(input));
result = result && gs_set_param_float2(m_effect, "u_imageSize", &imageSize);
vec2 imageTexelDelta;
vec2_set(&imageTexelDelta, 1.0f, 1.0f);
vec2_div(&imageTexelDelta, &imageTexelDelta, &imageSize);
result = result && gs_set_param_float2(m_effect, "u_imageTexelDelta", &imageTexelDelta);
vec2 texel; vec2_set(&texel, texelX, texelY);
result = result && gs_set_param_float2(m_effect, "u_texelDelta", &texel);
result = result && gs_set_param_int(m_effect, "u_radius", (int)m_size);
result = result && gs_set_param_int(m_effect, "u_diameter", (int)(1 + (m_size * 2)));
return result;
}
bool Filter::Blur::Instance::apply_bilateral_param() {
gs_eparam_t *param;
if (m_type != Type::Bilateral)
return false;
// Bilateral Blur
param = gs_effect_get_param_by_name(m_effect, "bilateralSmoothing");
if (!param) {
P_LOG_ERROR("<filter-blur> Failed to set bilateralSmoothing param.");
return false;
} else {
P_LOG_DEBUG("<filter-blur> Applying bilateralSmoothing parameter.");
gs_effect_set_float(param,
(float)(m_bilateralSmoothing * (1 + m_size * 2)));
}
param = gs_effect_get_param_by_name(m_effect, "bilateralSharpness");
if (!param) {
P_LOG_ERROR("<filter-blur> Failed to set bilateralSmoothing param.");
return false;
} else {
P_LOG_DEBUG("<filter-blur> Applying bilateralSharpness parameter.");
gs_effect_set_float(param, (float)(1.0 - m_bilateralSharpness));
}
return true;
}
bool Filter::Blur::Instance::apply_gaussian_param() {
bool result = true;
if (m_type != Type::Gaussian)
return false;
if (g_gaussianBlur.kernels.size() >= m_size) {
result = result && gs_set_param_texture(m_effect, "kernel",
g_gaussianBlur.kernels[m_size - 1]);
}
vec2 kerneltexel;
vec2_set(&kerneltexel, 1.0f / (m_size + 1), 0);
result = result && gs_set_param_float2(m_effect, "kernelTexel", &kerneltexel);
return result;
}