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https://github.com/Xaymar/obs-StreamFX
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filter-custom-shader: Basic custom shader support
The Custom Shader Filter is now capable of rendering a custom shader using the gfx::effect_source class as a backend. An example shader is provided for starting off, more advanced examples may come later. Related: #5
This commit is contained in:
Michael Fabian 'Xaymar' Dirks
parent
0957ce0bb9
commit
e8da137ab6
3 changed files with 93 additions and 191 deletions
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@ -1,19 +1,20 @@
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// Input Parameters (Auto)
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uniform float4x4 ViewProj;
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uniform float2 ViewSize;
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//uniform int2 ViewSizeI;
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uniform float Time;
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uniform float TimeActive;
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// Basic Input Parameters
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uniform float4x4 ViewProj; // View Projection Matrix
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uniform float2 ViewSize; // View Size as Float2
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//uniform int2 ViewSizeI; // View Size as Int2
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//uniform float Time; // Time Existing
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uniform float TimeActive; // Time Active
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// Default Texture Parameter
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uniform texture2d image;
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uniform float2 image_Size;
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//uniform int2 image_SizeI;
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//uniform float2 image_Texel;
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// Filter Input Parameters
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uniform texture2d Image; // Input Image
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uniform float2 Image_Size;
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//uniform int2 Image_SizeI;
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//uniform float2 Image_Texel;
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// Custom Parameters (these show up in the UI)
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uniform float4 colr;
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uniform float waveScale;
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// Custom Parameters (These will be visible in the UI)
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//uniform float4 Color;
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uniform float WaveScale;
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uniform float WaveAmplitude;
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sampler_state textureSampler {
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AddressU = Wrap;
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@ -39,28 +40,30 @@ FragData VSDefault(VertData v_in) {
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return vert_out;
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}
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float4 PSDefault(FragData v_in) : TARGET {
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float4 smp = image.Sample(textureSampler, v_in.uv).rgba;
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return lerp(colr, smp, sin(fmod(TimeActive / 3.0, 1.0) * 3.14));
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// Simple texture sample, technically does nothing.
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float4 PS_Sample(FragData v_in) : TARGET {
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return Image.Sample(textureSampler, v_in.uv);
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}
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float4 PSRotate(FragData v_in) : TARGET {
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// Adding a little wave to the image makes a huge difference already.
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float4 PS_Wave(FragData v_in) : TARGET {
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float2 realPos = v_in.uv * ViewSize;
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float yoff = sin(realPos.x / WaveAmplitude + TimeActive) * ((WaveScale / 100.0) * Image_Size.y);
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return Image.Sample(textureSampler, v_in.uv + float2(0, yoff));
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}
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// Rotating is also rather easy to do.
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float4 PS_Rotate(FragData v_in) : TARGET {
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float angle = TimeActive * 3.141 / 16.0;
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float cp = cos(angle);
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float sp = sin(angle);
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float sn = -sp;
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float2 uv = float2((v_in.uv.x * cp) + (v_in.uv.y * sn), (v_in.uv.x * sp) + (v_in.uv.y * cp));
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float2 uv = v_in.uv * Image_Size;
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uv = float2((uv.x * cp) + (uv.y * sn), (uv.x * sp) + (uv.y * cp));
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uv /= Image_Size;
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return image.Sample(textureSampler, uv);
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}
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float4 PSWave(FragData v_in) : TARGET {
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float2 realPos = v_in.uv * ViewSize;
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float yoff = sin(realPos.x / 36.0 + TimeActive) * ((waveScale / 100.0) * image_Size.y);
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return image.Sample(textureSampler, v_in.uv + float2(0, yoff));
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return Image.Sample(textureSampler, uv);
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}
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technique Draw
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@ -68,6 +71,6 @@ technique Draw
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pass
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{
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vertex_shader = VSDefault(v_in);
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pixel_shader = PSWave(v_in);
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pixel_shader = PS_Rotate(v_in);
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}
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}
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@ -141,8 +141,8 @@ void Filter::CustomShader::video_render(void *ptr, gs_effect_t *effect) {
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}
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Filter::CustomShader::Instance::Instance(obs_data_t *data, obs_source_t *source) : gfx::effect_source(data, source) {
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default_shader_path = "shaders/filter/example.effect";
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m_defaultShaderPath = "shaders/filter/example.effect";
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m_renderTarget = std::make_shared<gs::rendertarget>(GS_RGBA, GS_ZS_NONE);
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update(data);
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}
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@ -314,7 +314,7 @@ bool Filter::CustomShader::Instance::is_special_parameter(std::string name, gs::
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{ "ViewSizeI", gs::effect_parameter::type::Integer2 },
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{ "Time", gs::effect_parameter::type::Float },
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{ "TimeActive", gs::effect_parameter::type::Float },
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{ "image", gs::effect_parameter::type::Texture }
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{ "Image", gs::effect_parameter::type::Texture },
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};
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std::pair<std::string, gs::effect_parameter::type> textureParameters[] = {
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{ "Size", gs::effect_parameter::type::Float2 },
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@ -335,7 +335,7 @@ bool Filter::CustomShader::Instance::is_special_parameter(std::string name, gs::
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secondPart = name.substr(posUnderscore + 1);
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try {
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gs::effect_parameter prm = shader.effect->get_parameter(firstPart);
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gs::effect_parameter prm = m_shader.effect->get_parameter(firstPart);
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if (prm.get_type() == gs::effect_parameter::type::Texture) {
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for (auto& kv : textureParameters) {
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if ((secondPart == kv.first) && (type == kv.second))
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@ -350,104 +350,66 @@ bool Filter::CustomShader::Instance::is_special_parameter(std::string name, gs::
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return false;
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}
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bool Filter::CustomShader::Instance::apply_special_parameters() {
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throw std::logic_error("The method or operation is not implemented.");
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bool Filter::CustomShader::Instance::apply_special_parameters(uint32_t viewW, uint32_t viewH) {
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std::unique_ptr<gs::texture> imageTexture;
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m_renderTarget->get_texture(imageTexture);
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if (m_shader.effect->has_parameter("Image", gs::effect_parameter::type::Texture)) {
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m_shader.effect->get_parameter("Image").set_texture(imageTexture->get_object());
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} else {
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return false;
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}
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if (m_shader.effect->has_parameter("Image_Size", gs::effect_parameter::type::Float2)) {
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m_shader.effect->get_parameter("Image_Size").set_float2(
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float_t(imageTexture->get_width()),
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float_t(imageTexture->get_height()));
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}
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if (m_shader.effect->has_parameter("Image_SizeI"/*, gs::effect_parameter::type::Integer2*/)) {
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m_shader.effect->get_parameter("Image_SizeI").set_int2(
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imageTexture->get_width(),
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imageTexture->get_height());
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}
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if (m_shader.effect->has_parameter("Image_Texel", gs::effect_parameter::type::Float2)) {
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m_shader.effect->get_parameter("Image_Texel").set_float2(
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float_t(1.0 / imageTexture->get_width()),
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float_t(1.0 / imageTexture->get_height()));
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}
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return true;
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}
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void Filter::CustomShader::Instance::video_tick_impl(float time) {
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throw std::logic_error("The method or operation is not implemented.");
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bool Filter::CustomShader::Instance::video_tick_impl(float_t time) {
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return true;
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}
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void Filter::CustomShader::Instance::video_render_impl(gs_effect_t* parent_effect) {
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throw std::logic_error("The method or operation is not implemented.");
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bool Filter::CustomShader::Instance::video_render_impl(gs_effect_t* parent_effect, uint32_t viewW, uint32_t viewH) {
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// Render original source to render target.
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{
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auto op = m_renderTarget->render(viewW, viewH);
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vec4 black; vec4_zero(&black);
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gs_ortho(0, (float_t)viewW, 0, (float_t)viewH, 0, 1);
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gs_clear(GS_CLEAR_COLOR, &black, 0, 0);
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if (obs_source_process_filter_begin(m_source, GS_RGBA, OBS_NO_DIRECT_RENDERING)) {
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obs_source_process_filter_end(m_source,
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parent_effect ? parent_effect : obs_get_base_effect(OBS_EFFECT_DEFAULT), viewW, viewH);
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}
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}
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gs_texture_t* sourceTexture = m_renderTarget->get_object();
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if (!sourceTexture) {
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return false;
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}
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if (!apply_special_parameters(viewW, viewH)) {
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return false;
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}
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return true;
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}
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//void Filter::CustomShader::Instance::video_render(gs_effect_t *effect) {
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// if (!m_source || !m_isActive) {
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// obs_source_skip_video_filter(m_source);
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// return;
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// }
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//
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// obs_source_t *parent = obs_filter_get_parent(m_source);
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// obs_source_t *target = obs_filter_get_target(m_source);
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// if (!parent || !target || !m_effect.effect) {
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// obs_source_skip_video_filter(m_source);
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// return;
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// }
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//
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// uint32_t baseW = obs_source_get_base_width(target),
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// baseH = obs_source_get_base_height(target);
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// if (!baseW || !baseH) {
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// obs_source_skip_video_filter(m_source);
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// return;
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// }
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//
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// // Render original source to texture.
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// {
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// auto op = m_renderTarget->render(baseW, baseH);
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// vec4 black; vec4_zero(&black);
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// gs_ortho(0, (float_t)baseW, 0, (float_t)baseH, 0, 1);
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// gs_clear(GS_CLEAR_COLOR, &black, 0, 0);
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// if (obs_source_process_filter_begin(m_source, GS_RGBA, OBS_NO_DIRECT_RENDERING)) {
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// obs_source_process_filter_end(m_source,
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// effect ? effect : obs_get_base_effect(OBS_EFFECT_DEFAULT), baseW, baseH);
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// }
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// }
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// gs_texture_t* sourceTexture = m_renderTarget->get_object();
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// if (!sourceTexture) {
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// obs_source_skip_video_filter(m_source);
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// return;
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// }
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//
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// // Apply Parameters
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// try {
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// if (m_effect.effect->has_parameter("ViewSize", gs::effect_parameter::type::Float2))
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// m_effect.effect->get_parameter("ViewSize").set_float2(float_t(baseW), float_t(baseH));
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// if (m_effect.effect->has_parameter("ViewSizeI", gs::effect_parameter::type::Integer2))
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// m_effect.effect->get_parameter("ViewSizeI").set_int2(baseW, baseH);
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// if (m_effect.effect->has_parameter("Time", gs::effect_parameter::type::Float))
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// m_effect.effect->get_parameter("Time").set_float(m_renderTime);
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// if (m_effect.effect->has_parameter("TimeActive", gs::effect_parameter::type::Float))
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// m_effect.effect->get_parameter("TimeActive").set_float(m_activeTime);
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//
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// /// "image" Specials
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// if (m_effect.effect->has_parameter("image_Size", gs::effect_parameter::type::Float2))
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// m_effect.effect->get_parameter("image_Size").set_float2(float_t(baseW), float_t(baseH));
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// if (m_effect.effect->has_parameter("image_SizeI", gs::effect_parameter::type::Float2))
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// m_effect.effect->get_parameter("image_SizeI").set_int2(baseW, baseH);
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// if (m_effect.effect->has_parameter("image_Texel", gs::effect_parameter::type::Float2))
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// m_effect.effect->get_parameter("image_Texel").set_float2(1.0f / float_t(baseW), 1.0f / float_t(baseH));
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//
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// for (Parameter& prm : m_effectParameters) {
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// gs::effect_parameter eprm = m_effect.effect->get_parameter(prm.name);
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// switch (prm.type) {
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// case gs::effect_parameter::type::Boolean:
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// eprm.set_bool(prm.value.b);
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// break;
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// case gs::effect_parameter::type::Integer:
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// eprm.set_int(prm.value.i[0]);
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// break;
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// case gs::effect_parameter::type::Integer2:
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// eprm.set_int2(prm.value.i[0], prm.value.i[1]);
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// break;
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// case gs::effect_parameter::type::Integer3:
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// eprm.set_int3(prm.value.i[0], prm.value.i[1], prm.value.i[2]);
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// break;
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// case gs::effect_parameter::type::Integer4:
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// eprm.set_int4(prm.value.i[0], prm.value.i[1], prm.value.i[2], prm.value.i[3]);
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// break;
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// case gs::effect_parameter::type::Float:
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// eprm.set_float(prm.value.f[0]);
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// break;
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// case gs::effect_parameter::type::Float2:
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// eprm.set_float2(prm.value.f[0], prm.value.f[1]);
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// break;
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// case gs::effect_parameter::type::Float3:
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// eprm.set_float3(prm.value.f[0], prm.value.f[1], prm.value.f[2]);
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// break;
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// case gs::effect_parameter::type::Float4:
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// eprm.set_float4(prm.value.f[0], prm.value.f[1], prm.value.f[2], prm.value.f[3]);
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// break;
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// case gs::effect_parameter::type::Texture:
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// if (prm.value.textureIsSource) {
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// if (prm.value.source.rendertarget && prm.value.source.source) {
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@ -472,62 +434,6 @@ void Filter::CustomShader::Instance::video_render_impl(gs_effect_t* parent_effec
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// }
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// }
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//
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// } catch (...) {
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// obs_source_skip_video_filter(m_source);
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// return;
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// }
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//
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// gs_reset_blend_state();
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// gs_enable_depth_test(false);
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// while (gs_effect_loop(m_effect.effect->get_object(), "Draw")) {
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// obs_source_draw(sourceTexture, 0, 0, baseW, baseH, false);
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// }
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//}
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//
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//static bool UpdateSourceListCB(void *ptr, obs_source_t* src) {
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// obs_property_t* p = (obs_property_t*)ptr;
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// obs_property_list_add_string(p, obs_source_get_name(src), obs_source_get_name(src));
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// return true;
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//}
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//
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//static void UpdateSourceList(obs_property_t* p) {
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// obs_property_list_clear(p);
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// obs_enum_sources(UpdateSourceListCB, p);
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//}
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//
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//void Filter::CustomShader::Instance::get_properties(obs_properties_t *pr) {
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// if (!m_effect.effect)
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// return;
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//
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// for (Parameter& prm : m_effectParameters) {
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// switch (prm.type) {
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// case gs::effect_parameter::type::Texture:
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// obs_property * pt = obs_properties_add_list(pr,
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// prm.uiNames[0].c_str(),
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// prm.uiDescriptions[0].c_str(),
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// OBS_COMBO_TYPE_LIST, OBS_COMBO_FORMAT_INT);
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// obs_property_list_add_int(pt, "File", 0);
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// obs_property_list_add_int(pt, "Source", 1);
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// obs_property_set_modified_callback(pt, modified_properties);
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//
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// pt = obs_properties_add_list(pr,
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// prm.uiNames[1].c_str(),
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// prm.uiDescriptions[1].c_str(),
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// OBS_COMBO_TYPE_LIST, OBS_COMBO_FORMAT_STRING);
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// UpdateSourceList(pt);
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//
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// obs_properties_add_path(pr,
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// prm.uiNames[2].c_str(),
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// prm.uiDescriptions[2].c_str(),
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// OBS_PATH_FILE, "", prm.value.file.path.c_str());
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// break;
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// }
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// }
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// return;
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//}
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//std::string Filter::CustomShader::Instance::GetShaderFile() {
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// return m_effect.path;
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//}
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//void Filter::CustomShader::Instance::CheckTextures(float_t time) {
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@ -53,7 +53,13 @@ namespace Filter {
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class Instance : public gfx::effect_source {
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friend class CustomShader;
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std::shared_ptr<gs::rendertarget> m_renderTarget;
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protected:
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bool apply_special_parameters(uint32_t viewW, uint32_t viewH);
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virtual bool is_special_parameter(std::string name, gs::effect_parameter::type type) override;
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virtual bool video_tick_impl(float_t time) override;
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virtual bool video_render_impl(gs_effect_t* parent_effect, uint32_t viewW, uint32_t viewH) override;
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public:
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Instance(obs_data_t*, obs_source_t*);
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@ -61,19 +67,6 @@ namespace Filter {
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uint32_t get_width();
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uint32_t get_height();
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protected:
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virtual bool is_special_parameter(std::string name, gs::effect_parameter::type type) override;
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virtual bool apply_special_parameters() override;
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virtual void video_tick_impl(float time) override;
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virtual void video_render_impl(gs_effect_t* parent_effect) override;
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};
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};
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}
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