From b27c6600227fa4aca648baf831100fc60469a7bb Mon Sep 17 00:00:00 2001
From: Eric Wasylishen <ewasylishen@gmail.com>
Date: Mon, 22 May 2023 12:20:48 -0600
Subject: [PATCH] lightpreview: add fullbright checkbox

---
 lightpreview/glview.cpp     | 11 ++++++++++-
 lightpreview/glview.h       |  3 +++
 lightpreview/mainwindow.cpp |  5 ++++-
 3 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/lightpreview/glview.cpp b/lightpreview/glview.cpp
index 3f9fee7d..27d78485 100644
--- a/lightpreview/glview.cpp
+++ b/lightpreview/glview.cpp
@@ -79,10 +79,11 @@ uniform sampler2D texture_sampler;
 uniform sampler2D lightmap_sampler;
 uniform float opacity;
 uniform bool lightmap_only;
+uniform bool fullbright;
 
 void main() {
     vec3 texcolor = lightmap_only ? vec3(0.5) : texture(texture_sampler, uv).rgb;
-    vec3 lmcolor = texture(lightmap_sampler, lightmap_uv).rgb;
+    vec3 lmcolor = fullbright ? vec3(0.5) : texture(lightmap_sampler, lightmap_uv).rgb;
 
     // 2.0 for overbright
     color = vec4(texcolor * lmcolor * 2.0, opacity);
@@ -126,6 +127,7 @@ void GLView::initializeGL()
     m_program_lightmap_sampler_location = m_program->uniformLocation("lightmap_sampler");
     m_program_opacity_location = m_program->uniformLocation("opacity");
     m_program_lightmap_only_location = m_program->uniformLocation("lightmap_only");
+    m_program_fullbright_location = m_program->uniformLocation("fullbright");
     m_vao.create();
 
     glEnable(GL_DEPTH_TEST);
@@ -154,6 +156,7 @@ void GLView::paintGL()
     m_program->setUniformValue(m_program_lightmap_sampler_location, 1 /* texture unit */);
     m_program->setUniformValue(m_program_opacity_location, 1.0f);
     m_program->setUniformValue(m_program_lightmap_only_location, m_lighmapOnly);
+    m_program->setUniformValue(m_program_fullbright_location, m_fullbright);
 
     // opaque draws
     for (auto &draw : m_drawcalls) {
@@ -207,6 +210,12 @@ void GLView::setLighmapOnly(bool lighmapOnly)
     update();
 }
 
+void GLView::setFullbright(bool fullbright)
+{
+    m_fullbright = fullbright;
+    update();
+}
+
 void GLView::renderBSP(const QString &file, const mbsp_t &bsp, const std::vector<entdict_t> &entities)
 {
     // FIXME: move to a lightpreview_settings
diff --git a/lightpreview/glview.h b/lightpreview/glview.h
index 05c6855a..65b74c74 100644
--- a/lightpreview/glview.h
+++ b/lightpreview/glview.h
@@ -73,6 +73,7 @@ private:
 
     // render options
     bool m_lighmapOnly = false;
+    bool m_fullbright = false;
 
     QOpenGLVertexArrayObject m_vao;
     QOpenGLBuffer m_vbo;
@@ -96,6 +97,7 @@ private:
     int m_program_lightmap_sampler_location = 0;
     int m_program_opacity_location = 0;
     int m_program_lightmap_only_location = 0;
+    int m_program_fullbright_location = 0;
 
 public:
     GLView(QWidget *parent = nullptr);
@@ -104,6 +106,7 @@ public:
     void renderBSP(const QString &file, const mbsp_t &bsp, const std::vector<entdict_t> &entities);
     void setCamera(const qvec3d &origin, const qvec3d &fwd);
     void setLighmapOnly(bool lighmapOnly);
+    void setFullbright(bool fullbright);
 
 protected:
     void initializeGL() override;
diff --git a/lightpreview/mainwindow.cpp b/lightpreview/mainwindow.cpp
index 593a766b..556bcdb0 100644
--- a/lightpreview/mainwindow.cpp
+++ b/lightpreview/mainwindow.cpp
@@ -56,12 +56,14 @@ MainWindow::MainWindow(QWidget *parent)
     light_options = new QLineEdit();
     auto *reload_button = new QPushButton(tr("Reload"));
     auto *lightmap_only = new QCheckBox(tr("Lightmap Only"));
+    auto *fullbright = new QCheckBox(tr("Fullbright"));
 
     formLayout->addRow(tr("qbsp"), qbsp_options);
     formLayout->addRow(vis_checkbox, vis_options);
     formLayout->addRow(tr("light"), light_options);
     formLayout->addRow(reload_button);
     formLayout->addRow(lightmap_only);
+    formLayout->addRow(fullbright);
 
     auto *form = new QWidget();
     form->setLayout(formLayout);
@@ -86,7 +88,8 @@ MainWindow::MainWindow(QWidget *parent)
 
     connect(reload_button, &QAbstractButton::clicked, this, &MainWindow::reload);
     connect(
-        lightmap_only, &QCheckBox::stateChanged, this, [&]() { glView->setLighmapOnly(lightmap_only->isChecked()); });
+        lightmap_only, &QCheckBox::stateChanged, this, [=]() { glView->setLighmapOnly(lightmap_only->isChecked()); });
+    connect(fullbright, &QCheckBox::stateChanged, this, [=]() { glView->setFullbright(fullbright->isChecked()); });
 }
 
 MainWindow::~MainWindow() { }