merge

ArchitectureColoredPainting/ArchitectureColoredPainting.vcxproj

@@ -134,6 +134,7 @@
     <ClCompile Include="src\Renderer\Painting\Painting.cpp" />
     <ClCompile Include="src\Renderer\Painting\PaintingHelper.cpp" />
     <ClCompile Include="src\Renderer\PaintingMesh.cpp" />
+    <ClCompile Include="src\Renderer\Preview\ElementRenderer.cpp" />
     <ClCompile Include="src\Renderer\RendererGLWidget.cpp" />
     <ClCompile Include="src\Renderer\RendererWidget.cpp" />
     <ClCompile Include="src\Renderer\Painting\ShortCutTree.cpp" />
@@ -153,6 +154,7 @@
     <None Include="lightstyle.qss" />
     <None Include="Shaders\depth_init.comp" />
     <None Include="Shaders\depth_mipmap.comp" />
+    <None Include="Shaders\element.comp" />
     <None Include="Shaders\final.frag" />
     <None Include="Shaders\final.vert" />
     <None Include="Shaders\model.frag" />
@@ -160,7 +162,9 @@
     <None Include="Shaders\model_shadow.frag" />
     <None Include="Shaders\model_shadow.geom" />
     <None Include="Shaders\model_shadow.vert" />
-    <None Include="Shaders\painting.comp" />
+    <None Include="Shaders\painting.comp">
+      <FileType>Document</FileType>
+    </None>
     <None Include="Shaders\painting.frag" />
     <None Include="Shaders\painting.vert" />
     <None Include="Shaders\shader.frag" />
@@ -190,6 +194,7 @@
     <ClInclude Include="src\Renderer\Painting\LineTree.h" />
     <ClInclude Include="src\Renderer\Painting\MaterialStyleStroke.h" />
     <ClInclude Include="src\Renderer\Painting\Painting.h" />
+    <ClInclude Include="src\Renderer\Preview\ElementRenderer.h" />
     <ClInclude Include="src\SvgParser.h" />
     <QtMoc Include="src\TitleWidget.h" />
     <QtMoc Include="src\IconWidget.h" />

ArchitectureColoredPainting/ArchitectureColoredPainting.vcxproj.filters

@@ -59,6 +59,12 @@
     <Filter Include="Source Files\Editor\util">
       <UniqueIdentifier>{96f98afe-4250-44cb-a505-682a1d5932c3}</UniqueIdentifier>
     </Filter>
+    <Filter Include="Source Files\Renderer\Preview">
+      <UniqueIdentifier>{2a8e109f-7791-46ad-8c86-fe22a651cbe7}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="Header Files\Renderer\Preview">
+      <UniqueIdentifier>{7ead1a66-586a-4584-ae80-9e7a4e667364}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
   <ItemGroup>
     <QtUic Include="MainWindow.ui">
@@ -195,6 +201,9 @@
     <ClCompile Include="src\Editor\util\PainterPathUtil.cpp">
       <Filter>Source Files\Editor\util</Filter>
     </ClCompile>
+    <ClCompile Include="src\Renderer\Preview\ElementRenderer.cpp">
+      <Filter>Source Files\Renderer\Preview</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <QtMoc Include="src\Renderer\RendererGLWidget.h">
@@ -287,6 +296,9 @@
       <Filter>Resource Files</Filter>
     </None>
     <None Include="..\data.json" />
+    <None Include="Shaders\element.comp">
+      <Filter>Resource Files\Shaders</Filter>
+    </None>
   </ItemGroup>
   <ItemGroup>
     <QtUic Include="EditorWidget.ui">
@@ -392,6 +404,11 @@
     </ClInclude>
     <ClInclude Include="src\Editor\util\PainterPathUtil.h">
       <Filter>Header Files\Editor\util</Filter>
+    <ClInclude Include="src\Renderer\Painting\MaterialStyleStroke.h">
+      <Filter>Header Files\Renderer\Painting</Filter>
+    </ClInclude>
+    <ClInclude Include="src\Renderer\Preview\ElementRenderer.h">
+      <Filter>Header Files\Renderer\Preview</Filter>
     </ClInclude>
   </ItemGroup>
   <ItemGroup>

ArchitectureColoredPainting/MainWindow.qrc

@@ -23,6 +23,7 @@
         <file>images/icon_window_restore.png</file>
         <file>darkstyle.qss</file>
         <file>lightstyle.qss</file>
+        <file>Shaders/element.comp</file>
     </qresource>
     <qresource prefix="/qt/etc">
         <file>qt.conf</file>

ArchitectureColoredPainting/src/Editor/GraphicElement.cpp

@@ -1,5 +1,5 @@
 #include "GraphicElement.h"
-#include <util/SvgFileLoader.h>
+#include "util/SvgFileLoader.h"
 using namespace std;
 QPainterPath SimpleElement::getPaintObject() const
 {

ArchitectureColoredPainting/src/Renderer/Painting/Element.cpp

@@ -1 +1,16 @@
 #include "Element.h"
+
+void Renderer::ElementTransform::applyTransformStyle(const TransformStyle& t)
+{
+	center += t.translation;
+	size *= t.scale;
+	rotation += t.rotation;
+	flip ^= t.flip;
+}
+
+Renderer::ElementTransform Renderer::ElementTransform::appliedTransformStyle(const TransformStyle& t) const
+{
+	ElementTransform result = *this;
+	result.applyTransformStyle(t);
+	return result;
+}

ArchitectureColoredPainting/src/Renderer/Painting/Element.h

@@ -21,5 +21,8 @@ namespace Renderer
 		float rotation; /// ½Ç¶ÈÖÆ
 		glm::bvec2 flip;
 		GLuint zIndex;
+
+		void applyTransformStyle(const TransformStyle& t);
+		ElementTransform appliedTransformStyle(const TransformStyle& t) const;
 	};
 }

ArchitectureColoredPainting/src/Renderer/Painting/Painting.cpp

@@ -79,10 +79,7 @@ void Renderer::Painting::addElement(const Element& element, const ElementTransfo
 	{
 		auto& style = it->second[i];
 		ElementTransform trans = transform;
-		trans.center += style.transform->translation;
-		trans.size *= style.transform->scale;
-		trans.rotation += style.transform->rotation;
-		trans.flip ^= style.transform->flip;
+		trans.applyTransformStyle(*style.transform);
 		trans.zIndex = trans.zIndex * 10 + i;
 		addElement(ElementWithTransform{ BaseElement{element.contour, style.material}, BaseTransform(trans) });
 	}

ArchitectureColoredPainting/src/Renderer/Preview/ElementRenderer.cpp

@@ -0,0 +1,160 @@
+#include "ElementRenderer.h"
+#include <QOpenGLFramebufferObject>
+#include <QOpenGLPaintDevice>
+#include <QDebug>
+#include <QSurface>
+#include <QPainterPath>
+#include <QPainter>
+#include <limits>
+#include <glm/gtc/matrix_transform.hpp>
+#include "../Painting/Element.h"
+#include "../Painting/Painting.h"
+#include "../Painting/MaterialStyleStroke.h"
+using namespace Renderer;
+
+Renderer::ElementRenderer::ElementRenderer(QOpenGLWidget* glWidget)
+	: glWidget(glWidget)
+{
+}
+
+void Renderer::ElementRenderer::initialize()
+{
+	initializeOpenGLFunctions();
+	shader = std::make_shared<QOpenGLShaderProgram>();
+	if (!shader->addShaderFromSourceFile(QOpenGLShader::Compute, ":/Shaders/element.comp"))
+		qDebug() << "ERROR: " << shader->log();
+	if (!shader->link())
+		qDebug() << "ERROR: " << shader->log();
+
+}
+
+std::vector<glm::vec2> generatePathBuffer(const QPainterPath& path)
+{
+	std::vector<glm::vec2> pathBuffer;
+	for (int i = 0; i < path.elementCount(); i++)
+	{
+		QPainterPath::Element element = path.elementAt(i);
+		switch (element.type)
+		{
+		case QPainterPath::MoveToElement:
+			qDebug() << "MoveToElement";
+			pathBuffer.push_back(glm::vec2(std::numeric_limits<float>::infinity()));
+			pathBuffer.push_back(glm::vec2(element.x, element.y));
+			break;
+		case QPainterPath::LineToElement:
+			qDebug() << "LineToElement";
+			glm::vec2 end = glm::vec2(element.x, element.y);
+			glm::vec2 mid = (pathBuffer.back() + end) / 2.f;
+			pathBuffer.push_back(mid);
+			pathBuffer.push_back(mid);
+			pathBuffer.push_back(end);
+			break;
+		case QPainterPath::CurveToElement:
+			qDebug() << "CurveToElement";
+			pathBuffer.push_back(glm::vec2(element.x, element.y));
+			break;
+		case QPainterPath::CurveToDataElement:
+			qDebug() << "CurveToDataElement";
+			pathBuffer.push_back(glm::vec2(element.x, element.y));
+			break;
+		}
+		qDebug() << element;
+	}
+	return pathBuffer;
+}
+
+std::vector<GLfloat> generateStyleBuffer(const std::vector<BaseStyle>& styles)
+{
+	std::vector<GLfloat> styleBuffer;
+	for (auto& style : styles)
+	{
+		styleBuffer.push_back(style.transform->translation.x);
+		styleBuffer.push_back(style.transform->translation.y);
+		styleBuffer.push_back(style.transform->scale.x);
+		styleBuffer.push_back(style.transform->scale.y);
+		styleBuffer.push_back(style.transform->rotation);
+		styleBuffer.push_back(glm::uintBitsToFloat(glm::packUnorm2x16(style.transform->flip)));
+		auto encoded = style.material->encoded();
+		styleBuffer.insert(styleBuffer.end(), encoded.begin(), encoded.end());
+	}
+	return styleBuffer;
+}
+
+QRectF calcBoundingRect(const QPainterPath& path, const std::vector<BaseStyle>& styles)
+{
+	QRectF bound = path.boundingRect();
+
+	ElementTransform originTransform{ glm::vec2(bound.center().x(), bound.center().y()), glm::vec2(bound.width(), bound.height()), 0, glm::bvec2(false), 0 };
+
+	glm::vec2 leftTop(std::numeric_limits<float>::max()), rightBottom(std::numeric_limits<float>::min());
+
+	for (auto& baseStyle : styles)
+	{
+		BaseTransform transform(originTransform.appliedTransformStyle(*baseStyle.transform));
+		if (baseStyle.material->type() == MaterialStyleType::kStroke)
+		{
+			float halfWidth = std::static_pointer_cast<MaterialStyleStroke>(baseStyle.material)->getWidth() / 2;
+			transform.bound.x -= halfWidth;
+			transform.bound.y -= halfWidth;
+			transform.bound.z += halfWidth;
+			transform.bound.w += halfWidth;
+		}
+		glm::vec2 points[] = {
+			glm::vec2(transform.bound.x, transform.bound.y),
+			glm::vec2(transform.bound.x, transform.bound.w),
+			glm::vec2(transform.bound.z, transform.bound.w),
+			glm::vec2(transform.bound.z, transform.bound.y)
+		};
+		for (auto& point : points)
+		{
+			float angle = glm::radians(baseStyle.transform->rotation);
+			point = glm::mat2{ {cos(angle), -sin(angle)}, {sin(angle), cos(angle)} } *point;
+			leftTop = glm::min(leftTop, point);
+			rightBottom = glm::max(rightBottom, point);
+		}
+	}
+	return QRectF(QPointF(leftTop.x, leftTop.y), QPointF(rightBottom.x, rightBottom.y));
+}
+
+std::pair<QImage, QPointF> Renderer::ElementRenderer::drawElement(const QPainterPath& path, const ElementStyle& style, float pixelRatio, bool releaseContext)
+{
+	auto baseStyles = style.toBaseStyles();
+	QRectF bound = calcBoundingRect(path, baseStyles);
+	QPointF leftTop = bound.topLeft();
+	QSize size(ceil(bound.width() * pixelRatio), ceil(bound.height() * pixelRatio));
+
+	auto pathBuffer = generatePathBuffer(path);
+	auto styleBuffer = generateStyleBuffer(baseStyles);
+
+	if (releaseContext) glWidget->makeCurrent();
+
+	GLuint ssbo[2];
+	glGenBuffers(2, ssbo);
+	glBindBuffer(GL_SHADER_STORAGE_BUFFER, ssbo[0]);
+	glBufferData(GL_SHADER_STORAGE_BUFFER, pathBuffer.size() * sizeof(glm::vec2), pathBuffer.data(), GL_STATIC_READ);
+	glBindBuffer(GL_SHADER_STORAGE_BUFFER, ssbo[1]);
+	glBufferData(GL_SHADER_STORAGE_BUFFER, styleBuffer.size() * sizeof(GLfloat), styleBuffer.data(), GL_STATIC_READ);
+	glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0);
+
+	auto fbo = QOpenGLFramebufferObject(size, QOpenGLFramebufferObject::NoAttachment, GL_TEXTURE_2D);
+	fbo.bind();
+	glClearColor(0, 0, 0, 0);
+	glClear(GL_COLOR_BUFFER_BIT);
+	fbo.release();
+
+	shader->bind();
+	shader->setUniformValue("pathSize", (GLint)pathBuffer.size());
+	shader->setUniformValue("styleSize", (GLint)styleBuffer.size());
+	shader->setUniformValue("leftTop", leftTop);
+	shader->setUniformValue("pixelRatio", pixelRatio);
+	glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 10, ssbo[0]);
+	glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 11, ssbo[1]);
+	glBindImageTexture(0, fbo.texture(), 0, GL_FALSE, 0, GL_READ_WRITE, GL_RGBA8);
+	glDispatchCompute(ceil(size.width() / 8.), ceil(size.height() / 8.), 1);
+	shader->release();
+
+	auto image = fbo.toImage(false);
+	glDeleteBuffers(2, ssbo);
+	if (releaseContext) glWidget->doneCurrent();
+	return { image, leftTop };
+}

ArchitectureColoredPainting/src/Renderer/Preview/ElementRenderer.h

@@ -0,0 +1,35 @@
+#pragma once
+#include <QOpenGLWidget>
+#include <QOpenGLFunctions_4_5_Core>
+#include <QOPenGLShaderProgram>
+#include "../Painting/ElementStyle.h"
+
+namespace Renderer
+{
+	class ElementRenderer : protected QOpenGLFunctions_4_5_Core
+	{
+	public:
+		ElementRenderer(QOpenGLWidget* glWidget);
+
+		/**
+		 * @brief 须在initializeGL函数中调用
+		 */
+		void initialize();
+
+		/**
+		 * @brief 将图元绘制到QImage
+		 * @param path 图元几何数据
+		 * @param style 图元样式
+		 * @param pixelRatio path中的单位坐标对应的像素大小
+		 * @param releaseContext 若在initializeGL, resizeGL或paintGL中调用须传入false
+		 * @return QImage 绘制得到的位图
+		 * @return QPointF 位图原点（左上角）在QPainterPath坐标系下的坐标
+		 */
+		std::pair<QImage, QPointF> drawElement(const QPainterPath& path, const ElementStyle& style, float pixelRatio, bool releaseContext = true);
+	protected:
+		QOpenGLWidget* glWidget;
+		std::shared_ptr<QOpenGLShaderProgram> shader;
+	};
+
+}
+