mark waveformrenderer using rendergraph

src/waveform/renderers/allshader/digitsrenderer.cpp

@@ -5,18 +5,21 @@
 #include <QGraphicsBlurEffect>
 #include <QGraphicsPixmapItem>
 #include <QGraphicsScene>
-#include <QOpenGLTexture>
 #include <QPainter>
 #include <QPainterPath>
 #include <cmath>
 
+#include "rendergraph/context.h"
+#include "rendergraph/geometry.h"
+#include "rendergraph/material/texturematerial.h"
+#include "rendergraph/vertexupdaters/texturedvertexupdater.h"
 #include "util/assert.h"
 #include "util/roundtopixel.h"
-#include "waveform/renderers/allshader/matrixforwidgetgeometry.h"
-#include "waveform/renderers/allshader/vertexdata.h"
 
 // Render digits using a texture (generated) with digits with blurred dark outline
 
+using namespace rendergraph;
+
 namespace {
 
 // The texture will contain 12 characters: 10 digits, colon and dot
@@ -57,23 +60,22 @@ static_assert(checkCharToIndex());
 
 } // namespace
 
-allshader::DigitsRenderer::~DigitsRenderer() = default;
-
-void allshader::DigitsRenderer::init() {
-    initializeOpenGLFunctions();
-    m_shader.init();
+allshader::DigitsRenderNode::DigitsRenderNode() {
+    setGeometry(std::make_unique<Geometry>(TextureMaterial::attributes(), 0));
+    setMaterial(std::make_unique<TextureMaterial>());
+    geometry().setDrawingMode(Geometry::DrawingMode::Triangles);
 }
 
-float allshader::DigitsRenderer::height() const {
+allshader::DigitsRenderNode::~DigitsRenderNode() = default;
+
+float allshader::DigitsRenderNode::height() const {
     return m_height;
 }
 
-void allshader::DigitsRenderer::updateTexture(
-        float fontPointSize, float maxHeight, float devicePixelRatio) {
-    if (std::lround(maxHeight * devicePixelRatio) <= 0) {
-        return;
-    }
-
+void allshader::DigitsRenderNode::updateTexture(rendergraph::Context* pContext,
+        float fontPointSize,
+        float maxHeight,
+        float devicePixelRatio) {
     if (fontPointSize == m_fontPointSize && maxHeight == m_maxHeight) {
         return;
     }
@@ -184,12 +186,12 @@ void allshader::DigitsRenderer::updateTexture(
         blur->setBlurRadius(static_cast<float>(m_penWidth) / 3);
 
         QGraphicsScene scene;
-        auto item = std::make_unique<QGraphicsPixmapItem>();
-        item->setPixmap(QPixmap::fromImage(image));
-        item->setGraphicsEffect(blur.release());
+        QGraphicsPixmapItem item;
+        item.setPixmap(QPixmap::fromImage(image));
+        item.setGraphicsEffect(blur.release());
         image.fill(Qt::transparent);
         QPainter painter(&image);
-        scene.addItem(item.release());
+        scene.addItem(&item);
         scene.render(&painter, QRectF(), QRectF(0, 0, image.width(), image.height()));
     }
 
@@ -210,64 +212,66 @@ void allshader::DigitsRenderer::updateTexture(
         painter.drawPath(path);
     }
 
-    m_texture.setData(image);
+    dynamic_cast<TextureMaterial&>(material())
+            .setTexture(std::make_unique<Texture>(pContext, image));
 }
 
-float allshader::DigitsRenderer::draw(const QMatrix4x4& matrix,
+void allshader::DigitsRenderNode::update(
+        float x,
+        float y,
+        bool multiLine,
+        const QString& s1,
+        const QString& s2) {
+    const int numVerticesPerRectangle = 6;
+    const int reserved = (s1.length() + s2.length()) * numVerticesPerRectangle;
+    geometry().allocate(reserved);
+    TexturedVertexUpdater vertexUpdater{geometry().vertexDataAs<Geometry::TexturedPoint2D>()};
+
+    const float ch = height();
+    if (!s1.isEmpty()) {
+        const auto w = addVertices(vertexUpdater,
+                x,
+                y,
+                s1);
+        if (multiLine) {
+            y += ch;
+        } else {
+            x += w + ch * 0.75f;
+        }
+    }
+    if (!s2.isEmpty()) {
+        addVertices(vertexUpdater,
+                x,
+                y,
+                s2);
+    }
+
+    DEBUG_ASSERT(reserved == vertexUpdater.index());
+}
+
+void allshader::DigitsRenderNode::clear() {
+    geometry().allocate(0);
+}
+
+float allshader::DigitsRenderNode::addVertices(TexturedVertexUpdater& vertexUpdater,
         float x,
         float y,
         const QString& s) {
-    const int n = s.length();
     const float x0 = x;
     const float space = static_cast<float>(m_penWidth) / 2;
 
-    VertexData posVertices;
-    VertexData texVertices;
-
-    posVertices.reserve(n * 6); // two triangles per character
-    texVertices.reserve(n * 6);
-
     for (QChar c : s) {
         if (x != x0) {
             x -= space;
         }
         int index = charToIndex(c);
 
-        texVertices.addRectangle(m_offset[index], 0.f, m_offset[index + 1], 1.f);
-        posVertices.addRectangle(x,
-                y,
-                x + m_width[index],
-                y + height());
+        vertexUpdater.addRectangle({x, y},
+                {x + m_width[index], y + height()},
+                {m_offset[index], 0.f},
+                {m_offset[index + 1], 1.f});
         x += m_width[index];
     }
 
-    m_shader.bind();
-
-    const int matrixLocation = m_shader.uniformLocation("matrix");
-    const int textureLocation = m_shader.uniformLocation("texture");
-    const int positionLocation = m_shader.attributeLocation("position");
-    const int texcoordLocation = m_shader.attributeLocation("texcoord");
-
-    m_shader.setUniformValue(matrixLocation, matrix);
-
-    m_shader.enableAttributeArray(positionLocation);
-    m_shader.setAttributeArray(
-            positionLocation, GL_FLOAT, posVertices.constData(), 2);
-    m_shader.enableAttributeArray(texcoordLocation);
-    m_shader.setAttributeArray(
-            texcoordLocation, GL_FLOAT, texVertices.constData(), 2);
-
-    m_shader.setUniformValue(textureLocation, 0);
-
-    m_texture.bind();
-
-    glDrawArrays(GL_TRIANGLES, 0, posVertices.size());
-
-    m_texture.release();
-
-    m_shader.disableAttributeArray(positionLocation);
-    m_shader.disableAttributeArray(texcoordLocation);
-    m_shader.release();
-
     return x - x0;
 }

src/waveform/renderers/allshader/digitsrenderer.h

@@ -1,36 +1,50 @@
 #pragma once
 
-#include <QOpenGLFunctions>
+#include "rendergraph/context.h"
+#include "rendergraph/geometrynode.h"
+#include "util/class.h"
 
-#include "shaders/textureshader.h"
-#include "util/opengltexture2d.h"
+namespace rendergraph {
+class TexturedVertexUpdater;
+} // namespace rendergraph
 
 namespace allshader {
-class DigitsRenderer;
-}
+class DigitsRenderNode;
+} // namespace allshader
 
-class allshader::DigitsRenderer : public QOpenGLFunctions {
+class allshader::DigitsRenderNode : public rendergraph::GeometryNode {
   public:
-    DigitsRenderer() = default;
-    ~DigitsRenderer();
+    DigitsRenderNode();
+    ~DigitsRenderNode();
 
-    void init();
-    void updateTexture(float fontPointSize, float maxHeight, float devicePixelRatio);
-    float draw(const QMatrix4x4& matrix,
+    void updateTexture(rendergraph::Context* pContext,
+            float fontPointSize,
+            float maxHeight,
+            float devicePixelRatio);
+
+    void update(
             float x,
             float y,
-            const QString& s);
+            bool multiLine,
+            const QString& s1,
+            const QString& s2);
+
+    void clear();
+
     float height() const;
 
   private:
-    mixxx::TextureShader m_shader;
-    OpenGLTexture2D m_texture;
+    float addVertices(rendergraph::TexturedVertexUpdater& vertexUpdater,
+            float x,
+            float y,
+            const QString& s);
+
     int m_penWidth;
     float m_offset[13];
     float m_width[12];
     float m_fontPointSize{};
     float m_height{};
     float m_maxHeight{};
     float m_adjustedFontPointSize{};
-    DISALLOW_COPY_AND_ASSIGN(DigitsRenderer);
+    DISALLOW_COPY_AND_ASSIGN(DigitsRenderNode);
 };