From b29a05bbda8a5de9b5a1094bd15c22479d7c1781 Mon Sep 17 00:00:00 2001
From: itsmattkc <itsmattkc@gmail.com>
Date: Tue, 19 Mar 2019 21:05:13 +1100
Subject: [PATCH] reimplemented tsa and gizmos

---
 ui/viewerwidget.cpp | 39 ++++++++++++++++++++++++++++++++++-----
 ui/viewerwidget.h   |  4 ++++
 2 files changed, 38 insertions(+), 5 deletions(-)

diff --git a/ui/viewerwidget.cpp b/ui/viewerwidget.cpp
index 1da659e98..73fe329f0 100644
--- a/ui/viewerwidget.cpp
+++ b/ui/viewerwidget.cpp
@@ -41,7 +41,6 @@ extern "C" {
 #include <QScreen>
 #include <QMessageBox>
 #include <QOpenGLBuffer>
-#include <QOpenGLVertexArrayObject>
 
 #include "panels/panels.h"
 #include "project/projectelements.h"
@@ -62,6 +61,8 @@ extern "C" {
 #include "ui/menu.h"
 #include "mainwindow.h"
 
+const int kTitleActionSafeVertexSize = 84;
+
 ViewerWidget::ViewerWidget(QWidget *parent) :
   QOpenGLWidget(parent),
   waveform(false),
@@ -221,6 +222,13 @@ void ViewerWidget::initializeGL() {
   connect(context(), SIGNAL(aboutToBeDestroyed()), this, SLOT(context_destroy()), Qt::DirectConnection);
 
   pipeline_ = olive::rendering::GetPipeline();
+
+  vao_.create();
+
+  title_safe_area_buffer_.create();
+  title_safe_area_buffer_.bind();
+  title_safe_area_buffer_.allocate(nullptr, kTitleActionSafeVertexSize * sizeof(GLfloat));
+  title_safe_area_buffer_.release();
 }
 
 void ViewerWidget::frame_update() {
@@ -277,6 +285,10 @@ void ViewerWidget::context_destroy() {
 
   renderer.delete_ctx();
 
+  title_safe_area_buffer_.destroy();
+
+  vao_.destroy();
+
   pipeline_ = nullptr;
 
   doneCurrent();
@@ -509,14 +521,23 @@ void ViewerWidget::draw_title_safe_area() {
     0.5f, 0.55f, 0.0f
   };
 
+  vao_.bind();
+
+  title_safe_area_buffer_.bind();
+  title_safe_area_buffer_.write(0, vertices, kTitleActionSafeVertexSize * sizeof(GLfloat));
+
   GLuint vertex_location = pipeline_->attributeLocation("a_position");
   func->glEnableVertexAttribArray(vertex_location);
-  func->glVertexAttribPointer(vertex_location, 3, GL_FLOAT, GL_FALSE, 0, vertices);
+  func->glVertexAttribPointer(vertex_location, 3, GL_FLOAT, GL_FALSE, 0, 0);
 
   func->glDrawArrays(GL_LINES, 0, 28);
 
   pipeline_->setUniformValue("color_only", false);
 
+  title_safe_area_buffer_.release();
+
+  vao_.release();
+
   pipeline_->release();
 
 }
@@ -647,14 +668,23 @@ void ViewerWidget::draw_gizmos() {
     }
   }
 
+  vao_.bind();
+
+  QOpenGLBuffer vertex_buffer;
+  vertex_buffer.create();
+  vertex_buffer.bind();
+  vertex_buffer.allocate(vertices.constData(), vertices.size() * sizeof(GLfloat));
+
   GLuint vertex_location = pipeline_->attributeLocation("a_position");
   func->glEnableVertexAttribArray(vertex_location);
-  func->glVertexAttribPointer(vertex_location, 3, GL_FLOAT, GL_FALSE, 0, vertices.constData());
+  func->glVertexAttribPointer(vertex_location, 3, GL_FLOAT, GL_FALSE, 0, 0);
 
   func->glDrawArrays(GL_LINES, 0, vertices.size() / 3);
 
   pipeline_->setUniformValue("color_only", false);
 
+  vao_.release();
+
   pipeline_->release();
 
 }
@@ -669,10 +699,10 @@ void ViewerWidget::paintGL() {
     tex_lock->lock();
 
     QOpenGLFunctions* f = context()->functions();
-    //QOpenGLExtraFunctions* xf = context()->extraFunctions();
 
     makeCurrent();
 
+
     // clear to solid black
     f->glClearColor(0.0, 0.0, 0.0, 0.0);
     f->glClear(GL_COLOR_BUFFER_BIT);
@@ -680,7 +710,6 @@ void ViewerWidget::paintGL() {
 
     // draw texture from render thread
 
-
     f->glViewport(0, 0, width(), height());
 
     f->glBindTexture(GL_TEXTURE_2D, tex);
diff --git a/ui/viewerwidget.h b/ui/viewerwidget.h
index 2ae8460da..580bf3a3f 100644
--- a/ui/viewerwidget.h
+++ b/ui/viewerwidget.h
@@ -29,6 +29,8 @@
 #include <QMutex>
 #include <QWaitCondition>
 #include <QOpenGLFunctions>
+#include <QOpenGLVertexArrayObject>
+#include <QOpenGLBuffer>
 
 #include "timeline/clip.h"
 #include "project/footage.h"
@@ -94,6 +96,8 @@ private:
   double y_scroll;
 
   QOpenGLShaderProgramPtr pipeline_;
+  QOpenGLVertexArrayObject vao_;
+  QOpenGLBuffer title_safe_area_buffer_;
 
 private slots:
   void context_destroy();