renderer: add shadowable props

src/config/ConfigManager.cpp

@@ -35,6 +35,13 @@ CConfigManager::CConfigManager() : m_config(getMainConfigPath().c_str(), Hyprlan
 }
 
 void CConfigManager::init() {
+
+#define SHADOWABLE(name)                                                                                                                                                           \
+    m_config.addSpecialConfigValue(name, "shadow_size", Hyprlang::INT{3});                                                                                                         \
+    m_config.addSpecialConfigValue(name, "shadow_passes", Hyprlang::INT{2});                                                                                                       \
+    m_config.addSpecialConfigValue(name, "shadow_color", Hyprlang::INT{0xFF000000});                                                                                               \
+    m_config.addSpecialConfigValue(name, "shadow_boost", Hyprlang::FLOAT{1.2});
+
     m_config.addConfigValue("general:disable_loading_bar", Hyprlang::INT{0});
     m_config.addConfigValue("general:hide_cursor", Hyprlang::INT{0});
     m_config.addConfigValue("general:grace", Hyprlang::INT{0});
@@ -70,6 +77,7 @@ void CConfigManager::init() {
     m_config.addSpecialConfigValue("input-field", "placeholder_text", Hyprlang::STRING{"<i>Input Password</i>"});
     m_config.addSpecialConfigValue("input-field", "hide_input", Hyprlang::INT{0});
     m_config.addSpecialConfigValue("input-field", "rounding", Hyprlang::INT{-1});
+    SHADOWABLE("input-field");
 
     m_config.addSpecialCategory("label", Hyprlang::SSpecialCategoryOptions{.key = nullptr, .anonymousKeyBased = true});
     m_config.addSpecialConfigValue("label", "monitor", Hyprlang::STRING{""});
@@ -80,6 +88,7 @@ void CConfigManager::init() {
     m_config.addSpecialConfigValue("label", "font_family", Hyprlang::STRING{"Sans"});
     m_config.addSpecialConfigValue("label", "halign", Hyprlang::STRING{"none"});
     m_config.addSpecialConfigValue("label", "valign", Hyprlang::STRING{"none"});
+    SHADOWABLE("label");
 
     m_config.registerHandler(&::handleSource, "source", {false});
 
@@ -89,6 +98,8 @@ void CConfigManager::init() {
 
     if (result.error)
         Debug::log(ERR, "Config has errors:\n{}\nProceeding ignoring faulty entries", result.getError());
+
+#undef SHADOWABLE
 }
 
 std::mutex   configMtx;
@@ -101,6 +112,12 @@ void* const* CConfigManager::getValuePtr(const std::string& name) {
 std::vector<CConfigManager::SWidgetConfig> CConfigManager::getWidgetConfigs() {
     std::vector<CConfigManager::SWidgetConfig> result;
 
+#define SHADOWABLE(name)                                                                                                                                                           \
+    {"shadow_size", m_config.getSpecialConfigValue(name, "shadow_size", k.c_str())}, {"shadow_passes", m_config.getSpecialConfigValue(name, "shadow_passes", k.c_str())},          \
+        {"shadow_color", m_config.getSpecialConfigValue(name, "shadow_color", k.c_str())}, {                                                                                       \
+        "shadow_boost", m_config.getSpecialConfigValue(name, "shadow_boost", k.c_str())                                                                                            \
+    }
+
     //
     auto keys = m_config.listKeysForSpecialCategory("background");
     for (auto& k : keys) {
@@ -146,6 +163,7 @@ std::vector<CConfigManager::SWidgetConfig> CConfigManager::getWidgetConfigs() {
                 {"placeholder_text", m_config.getSpecialConfigValue("input-field", "placeholder_text", k.c_str())},
                 {"hide_input", m_config.getSpecialConfigValue("input-field", "hide_input", k.c_str())},
                 {"rounding", m_config.getSpecialConfigValue("input-field", "rounding", k.c_str())},
+                SHADOWABLE("input-field"),
             }
         });
         // clang-format on
@@ -165,6 +183,7 @@ std::vector<CConfigManager::SWidgetConfig> CConfigManager::getWidgetConfigs() {
                 {"text", m_config.getSpecialConfigValue("label", "text", k.c_str())},
                 {"halign", m_config.getSpecialConfigValue("label", "halign", k.c_str())},
                 {"valign", m_config.getSpecialConfigValue("label", "valign", k.c_str())},
+                SHADOWABLE("label"),
             }
         });
         // clang-format on

src/renderer/Framebuffer.cpp

@@ -17,11 +17,11 @@ static uint32_t glFormatToType(uint32_t gl) {
     return gl != GL_RGBA ? GL_UNSIGNED_INT_2_10_10_10_REV : GL_UNSIGNED_BYTE;
 }
 
-bool CFramebuffer::alloc(int w, int h) {
+bool CFramebuffer::alloc(int w, int h, bool highres) {
     bool     firstAlloc = false;
 
-    uint32_t glFormat = drmFormatToGL(DRM_FORMAT_XRGB2101010); // TODO: revise only 10b when I find a way to figure out without sc whether display is 10b
+    uint32_t glFormat = highres ? GL_RGBA16F : drmFormatToGL(DRM_FORMAT_XRGB2101010); // TODO: revise only 10b when I find a way to figure out without sc whether display is 10b
-    uint32_t glType   = glFormatToType(glFormat);
+    uint32_t glType   = highres ? GL_FLOAT : glFormatToType(glFormat);
 
     if (m_iFb == (uint32_t)-1) {
         firstAlloc = true;

src/renderer/Framebuffer.hpp

@@ -8,7 +8,7 @@ class CFramebuffer {
   public:
     ~CFramebuffer();
 
-    bool      alloc(int w, int h);
+    bool      alloc(int w, int h, bool highres = false);
     void      addStencil();
     void      bind() const;
     void      release();

src/renderer/Renderer.cpp

@@ -146,6 +146,9 @@ CRenderer::CRenderer() {
     blurFinishShader.texAttrib    = glGetAttribLocation(prog, "texcoord");
     blurFinishShader.brightness   = glGetUniformLocation(prog, "brightness");
     blurFinishShader.noise        = glGetUniformLocation(prog, "noise");
+    blurFinishShader.colorize     = glGetUniformLocation(prog, "colorize");
+    blurFinishShader.colorizeTint = glGetUniformLocation(prog, "colorizeTint");
+    blurFinishShader.boostA       = glGetUniformLocation(prog, "boostA");
 
     wlr_matrix_identity(projMatrix.data());
 
@@ -164,6 +167,10 @@ CRenderer::SRenderFeedback CRenderer::renderLock(const CSessionLockSurface& surf
     g_pEGL->makeCurrent(surf.eglSurface);
     glViewport(0, 0, surf.size.x, surf.size.y);
 
+    GLint fb = 0;
+    glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &fb);
+    pushFb(fb);
+
     glClearColor(0.0, 0.0, 0.0, 0.0);
     glClear(GL_COLOR_BUFFER_BIT);
 
@@ -330,8 +337,8 @@ void CRenderer::blurFB(const CFramebuffer& outfb, SBlurParams params) {
     wlr_matrix_multiply(glMatrix, projection.data(), matrix);
 
     CFramebuffer mirrors[2];
-    mirrors[0].alloc(outfb.m_vSize.x, outfb.m_vSize.y);
+    mirrors[0].alloc(outfb.m_vSize.x, outfb.m_vSize.y, true);
-    mirrors[1].alloc(outfb.m_vSize.x, outfb.m_vSize.y);
+    mirrors[1].alloc(outfb.m_vSize.x, outfb.m_vSize.y, true);
 
     CFramebuffer* currentRenderToFB = &mirrors[0];
 
@@ -442,6 +449,10 @@ void CRenderer::blurFB(const CFramebuffer& outfb, SBlurParams params) {
         glUniformMatrix3fv(blurFinishShader.proj, 1, GL_TRUE, glMatrix);
         glUniform1f(blurFinishShader.noise, params.noise);
         glUniform1f(blurFinishShader.brightness, params.brightness);
+        glUniform1i(blurFinishShader.colorize, params.colorize.has_value());
+        if (params.colorize.has_value())
+            glUniform3f(blurFinishShader.colorizeTint, params.colorize->r, params.colorize->g, params.colorize->b);
+        glUniform1f(blurFinishShader.boostA, params.boostA);
 
         glUniform1i(blurFinishShader.tex, 0);
 
@@ -468,3 +479,13 @@ void CRenderer::blurFB(const CFramebuffer& outfb, SBlurParams params) {
 
     glEnable(GL_BLEND);
 }
+
+void CRenderer::pushFb(GLint fb) {
+    boundFBs.push_back(fb);
+    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fb);
+}
+
+void CRenderer::popFb() {
+    boundFBs.pop_back();
+    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, boundFBs.empty() ? 0 : boundFBs.back());
+}

src/renderer/Renderer.hpp

@@ -2,6 +2,7 @@
 
 #include <memory>
 #include <chrono>
+#include <optional>
 
 #include "../core/LockSurface.hpp"
 #include "Shader.hpp"
@@ -24,6 +25,8 @@ class CRenderer {
     struct SBlurParams {
         int                   size = 0, passes = 0;
         float                 noise = 0, contrast = 0, brightness = 0, vibrancy = 0, vibrancy_darkness = 0;
+        std::optional<CColor> colorize;
+        float                 boostA = 1.0;
     };
 
     SRenderFeedback                         renderLock(const CSessionLockSurface& surface);
@@ -35,6 +38,9 @@ class CRenderer {
     std::unique_ptr<CAsyncResourceGatherer> asyncResourceGatherer;
     std::chrono::system_clock::time_point   gatheredAt;
 
+    void                                    pushFb(GLint fb);
+    void                                    popFb();
+
   private:
     widgetMap_t                            widgets;
 
@@ -49,6 +55,8 @@ class CRenderer {
 
     std::array<float, 9>                   projMatrix;
     std::array<float, 9>                   projection;
+
+    std::vector<GLint>                     boundFBs;
 };
 
 inline std::unique_ptr<CRenderer> g_pRenderer;

src/renderer/Shader.hpp

@@ -59,6 +59,11 @@ class CShader {
     GLint brightness = -1;
     GLint noise      = -1;
 
+    // colorize
+    GLint colorize     = -1;
+    GLint colorizeTint = -1;
+    GLint boostA       = -1;
+
     GLint getUniformLocation(const std::string&);
 
     void  destroy();

src/renderer/Shaders.hpp

@@ -331,6 +331,10 @@ uniform sampler2D tex;
 uniform float     noise;
 uniform float     brightness;
 
+uniform int       colorize;
+uniform vec3      colorizeTint;
+uniform float     boostA;
+
 float hash(vec2 p) {
     return fract(sin(dot(p, vec2(12.9898, 78.233))) * 43758.5453);
 }
@@ -348,6 +352,13 @@ void main() {
         pixColor.rgb *= brightness;
     }
 
+    pixColor.a *= boostA;
+
+    if (colorize == 1) {
+        gl_FragColor = vec4(colorizeTint.r, colorizeTint.g, colorizeTint.b, pixColor.a);
+        return;
+    }
+
     gl_FragColor = pixColor;
 }
 )#";

src/renderer/widgets/Label.cpp

@@ -52,7 +52,8 @@ void CLabel::plantTimer() {
         labelTimer = g_pHyprlock->addTimer(std::chrono::milliseconds((int)label.updateEveryMs), onTimer, this);
 }
 
-CLabel::CLabel(const Vector2D& viewport_, const std::unordered_map<std::string, std::any>& props, CSessionLockSurface* surface_) : surface(surface_) {
+CLabel::CLabel(const Vector2D& viewport_, const std::unordered_map<std::string, std::any>& props, CSessionLockSurface* surface_) :
+    surface(surface_), shadow(this, props, viewport_) {
     labelPreFormat         = std::any_cast<Hyprlang::STRING>(props.at("text"));
     std::string fontFamily = std::any_cast<Hyprlang::STRING>(props.at("font_family"));
     CColor      labelColor = std::any_cast<Hyprlang::INT>(props.at("color"));
@@ -92,6 +93,7 @@ bool CLabel::draw(const SRenderData& data) {
 
         // calc pos
         pos = posFromHVAlign(viewport, asset->texture.m_vSize, configPos, halign, valign);
+        shadow.markShadowDirty();
     }
 
     if (!pendingResourceID.empty()) {
@@ -104,11 +106,12 @@ bool CLabel::draw(const SRenderData& data) {
             resourceID        = pendingResourceID;
             pendingResourceID = "";
             pos               = posFromHVAlign(viewport, asset->texture.m_vSize, configPos, halign, valign);
+            shadow.markShadowDirty();
         }
     }
 
     CBox box = {pos.x, pos.y, asset->texture.m_vSize.x, asset->texture.m_vSize.y};
-
+    shadow.draw(data);
     g_pRenderer->renderTexture(box, asset->texture, data.opacity);
 
     return false;

src/renderer/widgets/Label.hpp

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "IWidget.hpp"
+#include "Shadowable.hpp"
 #include "../../helpers/Vector2D.hpp"
 #include "../../core/Timer.hpp"
 #include "../AsyncResourceGatherer.hpp"
@@ -38,4 +39,6 @@ class CLabel : public IWidget {
     CAsyncResourceGatherer::SPreloadRequest request;
 
     std::shared_ptr<CTimer>                 labelTimer;
+
+    CShadowable                             shadow;
 };

src/renderer/widgets/PasswordInputField.cpp

@@ -3,7 +3,7 @@
 #include "../../core/hyprlock.hpp"
 #include <algorithm>
 
-CPasswordInputField::CPasswordInputField(const Vector2D& viewport_, const std::unordered_map<std::string, std::any>& props) {
+CPasswordInputField::CPasswordInputField(const Vector2D& viewport_, const std::unordered_map<std::string, std::any>& props) : shadow(this, props, viewport_) {
     size                     = std::any_cast<Hyprlang::VEC2>(props.at("size"));
     inner                    = std::any_cast<Hyprlang::INT>(props.at("inner_color"));
     outer                    = std::any_cast<Hyprlang::INT>(props.at("outer_color"));
@@ -105,6 +105,11 @@ bool CPasswordInputField::draw(const SRenderData& data) {
     CBox inputFieldBox = {pos, size};
     CBox outerBox      = {pos - Vector2D{outThick, outThick}, size + Vector2D{outThick * 2, outThick * 2}};
 
+    if (firstRender) {
+        firstRender = false;
+        shadow.markShadowDirty();
+    }
+
     bool forceReload = false;
 
     updateFade();
@@ -112,6 +117,10 @@ bool CPasswordInputField::draw(const SRenderData& data) {
     updateFailTex();
     updateHiddenInputState();
 
+    SRenderData shadowData = data;
+    shadowData.opacity *= fade.a;
+    shadow.draw(shadowData);
+
     float  passAlpha = g_pHyprlock->passwordCheckWaiting() ? 0.5 : 1.0;
 
     CColor outerCol = outer;

src/renderer/widgets/PasswordInputField.hpp

@@ -3,6 +3,7 @@
 #include "IWidget.hpp"
 #include "../../helpers/Vector2D.hpp"
 #include "../../helpers/Color.hpp"
+#include "Shadowable.hpp"
 #include <chrono>
 #include <vector>
 #include <any>
@@ -22,6 +23,8 @@ class CPasswordInputField : public IWidget {
     void     updateFailTex();
     void     updateHiddenInputState();
 
+    bool     firstRender = true;
+
     Vector2D size;
     Vector2D pos;
     Vector2D viewport;
@@ -64,4 +67,6 @@ class CPasswordInputField : public IWidget {
     } hiddenInputState;
 
     bool        fadeOnEmpty;
+
+    CShadowable shadow;
 };

src/renderer/widgets/Shadowable.cpp

@@ -0,0 +1,36 @@
+#include "Shadowable.hpp"
+#include "../Renderer.hpp"
+
+CShadowable::CShadowable(IWidget* widget_, const std::unordered_map<std::string, std::any>& props, const Vector2D& viewport_) : widget(widget_), viewport(viewport_) {
+    size   = std::any_cast<Hyprlang::INT>(props.at("shadow_size"));
+    passes = std::any_cast<Hyprlang::INT>(props.at("shadow_passes"));
+    color  = std::any_cast<Hyprlang::INT>(props.at("shadow_color"));
+    boostA = std::any_cast<Hyprlang::FLOAT>(props.at("shadow_boost"));
+}
+
+void CShadowable::markShadowDirty() {
+
+    if (!shadowFB.isAllocated())
+        shadowFB.alloc(viewport.x, viewport.y, true);
+
+    g_pRenderer->pushFb(shadowFB.m_iFb);
+    glClearColor(0.0, 0.0, 0.0, 0.0);
+    glClear(GL_COLOR_BUFFER_BIT);
+
+    ignoreDraw = true;
+    widget->draw(IWidget::SRenderData{.opacity = 1.0});
+    ignoreDraw = false;
+
+    g_pRenderer->blurFB(shadowFB, CRenderer::SBlurParams{.size = size, .passes = passes, .colorize = color, .boostA = boostA});
+
+    g_pRenderer->popFb();
+}
+
+bool CShadowable::draw(const IWidget::SRenderData& data) {
+    if (!shadowFB.isAllocated() || ignoreDraw)
+        return true;
+
+    CBox box = {0, 0, viewport.x, viewport.y};
+    g_pRenderer->renderTexture(box, shadowFB.m_cTex, 1.0, 0, WL_OUTPUT_TRANSFORM_NORMAL);
+    return true;
+}

src/renderer/widgets/Shadowable.hpp

@@ -0,0 +1,32 @@
+#pragma once
+
+#include "../Framebuffer.hpp"
+#include "../Texture.hpp"
+#include "../../helpers/Color.hpp"
+#include "IWidget.hpp"
+
+#include <string>
+#include <unordered_map>
+#include <any>
+
+class CShadowable {
+  public:
+    CShadowable(IWidget* widget_, const std::unordered_map<std::string, std::any>& props, const Vector2D& viewport_ /* TODO: make this not the entire viewport */);
+
+    // instantly re-renders the shadow using the widget's draw() method
+    void         markShadowDirty();
+    virtual bool draw(const IWidget::SRenderData& data);
+
+  private:
+    IWidget* widget = nullptr;
+    int      size   = 10;
+    int      passes = 4;
+    float    boostA = 1.0;
+    CColor   color{0, 0, 0, 1.0};
+    Vector2D viewport;
+
+    // to avoid recursive shadows
+    bool         ignoreDraw = false;
+
+    CFramebuffer shadowFB;
+};