优化虚拟纹理加载

2023-02-26 13:57:53 +08:00 · 2023-02-26 13:57:53 +08:00 · 723c0a9760
parent f798ea410d
commit 723c0a9760
6 changed files with 38 additions and 234 deletions
--- a/ArchitectureColoredPainting/ArchitectureColoredPainting.vcxproj.filters
+++ b/ArchitectureColoredPainting/ArchitectureColoredPainting.vcxproj.filters
@ -201,9 +201,6 @@
    <ClCompile Include="src\Renderer\Preview\ElementRenderer.cpp">
      <Filter>Source Files\Renderer\Preview</Filter>
    </ClCompile>
-    <ClCompile Include="src\Editor\PixelPath.cpp">
-      <Filter>Source Files</Filter>
-    </ClCompile>
    <ClCompile Include="src\Editor\LayerStyle.cpp">
      <Filter>Source Files</Filter>
    </ClCompile>
@ -216,6 +213,9 @@
    <ClCompile Include="src\gl.c">
      <Filter>Source Files</Filter>
    </ClCompile>
+    <ClCompile Include="src\Editor\PixelPath.cpp">
+      <Filter>Source Files\Editor</Filter>
+    </ClCompile>
  </ItemGroup>
  <ItemGroup>
    <QtMoc Include="src\Renderer\RendererGLWidget.h">
--- a/ArchitectureColoredPainting/res/Shaders/pageId_downsample.comp
+++ b/ArchitectureColoredPainting/res/Shaders/pageId_downsample.comp
@ -4,7 +4,7 @@ layout (local_size_x = 8, local_size_y = 8) in;

 layout(rg16ui, binding = 3) uniform uimage2D gPageId;

-uniform uvec2 dither = uvec2(0);
+layout(location = 0) uniform uvec2 dither = uvec2(0);

 void main()
 {
--- a/ArchitectureColoredPainting/src/Renderer/Model.cpp
+++ b/ArchitectureColoredPainting/src/Renderer/Model.cpp
@ -11,6 +11,7 @@
 #include "Painting/ShortCutTree.h"
 #include "Painting/Painting.h"
 #include "../SvgParser.h"
+#include <ThirdPartyLib/qquick/qquicksvgparser_p.h>

 using namespace Renderer;
 using std::vector;
@ -118,7 +119,7 @@ std::unique_ptr<Drawable> Model::processMesh(aiMesh* mesh, const aiScene* scene,
 	aiString str;
 	material->GetTexture(aiTextureType_BASE_COLOR, 0, &str);

-	if (paintingProgram != nullptr && std::strcmp(str.C_Str(), "17876391417123941155.jpg") == 0)
+	if (paintingProgram != nullptr && ( std::strcmp(str.C_Str(), "17876391417123941155.jpg") == 0 || std::strcmp(str.C_Str(), "11474523244911310074.jpg") == 0))
 	{
 		qDebug() << str.C_Str() << "Replaced";
 		//  ³õÊ¼»¯Íø¸ñ
@ -233,72 +234,12 @@ GLuint Renderer::Model::loadPainting(std::string path)
 	if (iter != paintingLoaded.end())
 		return iter->second;

-	//vector < vector <Point>> lineSet = {
-	//	{{-0.5,0.9}, {0.1,0.3}},
-	//	{{0.1,0.3}, {0.0204656,0.379534}, {-0.2,0.0632573}, {-0.2,0.175736}},
-	//	{{-0.2,0.175736}, {-0.2,0.288215}, {-0.579534,0.220466}, {-0.5,0.3}},
-	//	{{-0.5,0.3}, {-0.420466,0.379534}, {-0.736743,0.6}, {-0.624264,0.6}},
-	//	{{-0.624264,0.6}, {-0.511785,0.6}, {-0.579534,0.979534}, {-0.5,0.9}}
-	//};
-
-	//Contour ctr = SvgParser("M308.49,212.25l23,28.38-82,78.31c-14.28,13.64-26.34-20.6-53.44,9.32l-30.24-13.4,63.56-51.59L190.71,215.6l-32.92,26.72L149.5,232.1l32.92-26.72L173.2,194l-32.91,26.72-7.38-9.08L165.83,185l-38.69-47.66L94.22,164,85,152.65l32.91-26.72-9.21-11.35L75.79,141.3l-5.53-6.81,32.92-26.72L94,96.42,61.05,123.14l-12-14.76L37.72,117.6l12,14.75L30.41,148,0,110.55,136.2,0l30.4,37.46L147.31,53.12l-12-14.76L124,47.58l12,14.75L103.05,89.05l9.21,11.35,32.92-26.72,5.52,6.81-32.91,26.72L127,118.56l32.92-26.72,9.21,11.35-32.91,26.72,38.69,47.67,32.91-26.72,7.37,9.08-32.91,26.72L191.49,198l32.92-26.72,8.29,10.22-32.92,26.71,38.7,47.68L302,204.3l6.45,7.95Z", 331.52, 328.26).parse();
-	//ctr = Contour(ctr.begin()+1 , ctr.begin() + 4);
-	//qDebug() << "Contour---------------------";
-	//for (auto& line : ctr)
-	//{
-	//	for (auto& p : line)
-	//		p.show();
-	//	std::cout << std::endl;
-	//}
-	//qDebug() << "----------------------------";
-
 	vector<std::shared_ptr<Contour>> contour = {
 		std::make_shared<Contour>(SvgParser("M100,100C-.5,100,0,100.5,0,0L40,.07C40,59.5,39.5,60,100,60Z", 100, 100).parse()),
-		//std::make_shared<Contour>(SvgParser("M292.82,107.78s0,0,0,0,0,3.59,0,7.62c0,3.85,0,5.78.06,6.43a19.94,19.94,0,0,0,2.87,7.58,15.85,15.85,0,0,0,6.61,6.23A14.75,14.75,0,0,0,310,137a11.69,11.69,0,0,0,7.59-2.92,11,11,0,0,0,3.2-6.84c.15-1.27.58-4.84-1.79-7.64a8.54,8.54,0,0,0-3.56-2.44c-1.32-.52-3.32-1.31-5.06-.33a5.41,5.41,0,0,0-2.14,3,3.48,3.48,0,0,0-.16,2.71c.78,1.86,3.36,2.14,3.47,2.15", 29.07, 30.28).parse()),
 		std::make_shared<Contour>(SvgParser("M308.49,212.25l23,28.38-82,78.31c-14.28,13.64-26.34-20.6-53.44,9.32l-30.24-13.4,63.56-51.59L190.71,215.6l-32.92,26.72L149.5,232.1l32.92-26.72L173.2,194l-32.91,26.72-7.38-9.08L165.83,185l-38.69-47.66L94.22,164,85,152.65l32.91-26.72-9.21-11.35L75.79,141.3l-5.53-6.81,32.92-26.72L94,96.42,61.05,123.14l-12-14.76L37.72,117.6l12,14.75L30.41,148,0,110.55,136.2,0l30.4,37.46L147.31,53.12l-12-14.76L124,47.58l12,14.75L103.05,89.05l9.21,11.35,32.92-26.72,5.52,6.81-32.91,26.72L127,118.56l32.92-26.72,9.21,11.35-32.91,26.72,38.69,47.67,32.91-26.72,7.37,9.08-32.91,26.72L191.49,198l32.92-26.72,8.29,10.22-32.92,26.71,38.7,47.68L302,204.3l6.45,7.95Z", 331.52, 328.26).parse()),
 		std::make_shared<Contour>(SvgParser("M377,459.61a11.26,11.26,0,0,1,11.27-11.27H696.12a11.27,11.27,0,0,0,11-8.62A359.84,359.84,0,0,0,708,280.56a11.26,11.26,0,0,0-11-8.73H388.27A11.26,11.26,0,0,1,377,260.57h0a11.26,11.26,0,0,1,11.27-11.26H683.71A11.32,11.32,0,0,0,694.28,234C649.8,113.69,542.57,23.85,412.3,4.12a11.22,11.22,0,0,0-12.76,11.17v158.9a11.26,11.26,0,0,0,11.26,11.27H583.12a11.32,11.32,0,0,0,9.26-17.75c-31.67-46.59-78.51-75.2-109.11-90.07a11.25,11.25,0,0,0-16.13,10.17V115.2a11.24,11.24,0,0,0,6.22,10.07l7.51,3.76a11.28,11.28,0,0,1,5,15.12h0a11.27,11.27,0,0,1-15.11,5l-20-10a11.27,11.27,0,0,1-6.22-10.07V54a11.27,11.27,0,0,1,14.62-10.75c5.11,1.59,125.66,40.35,172.24,149A11.27,11.27,0,0,1,621.11,208H388.27A11.26,11.26,0,0,1,377,196.73V11.36A11.32,11.32,0,0,0,365.89.08C363.34,0,360.79,0,358.22,0s-5.11,0-7.66.08a11.32,11.32,0,0,0-11.11,11.28V196.74A11.26,11.26,0,0,1,328.18,208H95.35A11.27,11.27,0,0,1,85,192.3c46.57-108.67,167.12-147.42,172.23-149A11.26,11.26,0,0,1,271.86,54v75.11a11.25,11.25,0,0,1-6.23,10.07l-20,10a11.27,11.27,0,0,1-15.11-5h0a11.26,11.26,0,0,1,5-15.11l7.52-3.76a11.27,11.27,0,0,0,6.22-10.07V87.82a11.25,11.25,0,0,0-16.14-10.16c-30.6,14.87-77.45,43.48-109.1,90.07a11.3,11.3,0,0,0,9.25,17.74H305.66a11.26,11.26,0,0,0,11.27-11.26V15.31A11.22,11.22,0,0,0,304.17,4.14C173.88,23.86,66.66,113.71,22.17,234a11.32,11.32,0,0,0,10.56,15.29H328.18a11.26,11.26,0,0,1,11.27,11.26v0a11.26,11.26,0,0,1-11.27,11.26H19.52a11.26,11.26,0,0,0-11,8.72,359.84,359.84,0,0,0,.83,159.16,11.26,11.26,0,0,0,11,8.61H328.18a11.26,11.26,0,0,1,11.27,11.27h0a11.26,11.26,0,0,1-11.27,11.26h-294a11.32,11.32,0,0,0-10.53,15.4C69,604.65,175.3,692.78,304.16,712.3a11.21,11.21,0,0,0,12.76-11.16V542.22A11.26,11.26,0,0,0,305.66,531h-166c-9.53,0-14.89,11.22-8.69,18.47,34.09,39.77,74.45,65.66,101.77,80.18a11.25,11.25,0,0,0,16.53-10V591a11.26,11.26,0,0,1,11.26-11.26h0A11.26,11.26,0,0,1,271.85,591v63.85A11.27,11.27,0,0,1,256.8,665.5c-4.45-1.59-109.58-40-171-139.9a11.27,11.27,0,0,1,9.59-17.17H328.18a11.26,11.26,0,0,1,11.27,11.26V705.08a11.32,11.32,0,0,0,11.11,11.28q3.82.07,7.66.08c2.57,0,5.12,0,7.67-.08A11.32,11.32,0,0,0,377,705.08V519.69a11.25,11.25,0,0,1,11.27-11.26H621.1a11.26,11.26,0,0,1,9.59,17.16c-61.46,99.87-166.59,138.3-171,139.9a11.27,11.27,0,0,1-15-10.61V591a11.26,11.26,0,0,1,11.26-11.26h0A11.26,11.26,0,0,1,467.14,591v28.6a11.25,11.25,0,0,0,16.53,10c27.33-14.53,67.68-40.42,101.77-80.19,6.2-7.23.85-18.46-8.69-18.46h-166a11.26,11.26,0,0,0-11.26,11.26V701.12a11.21,11.21,0,0,0,12.76,11.17c128.86-19.51,235.14-107.66,280.48-226a11.33,11.33,0,0,0-10.53-15.41h-294A11.25,11.25,0,0,1,377,459.61ZM35.27,399.53V316.9a11.26,11.26,0,0,1,11.27-11.26H669.92a11.25,11.25,0,0,1,11.26,11.26v82.63a11.25,11.25,0,0,1-11.26,11.26H46.54a11.27,11.27,0,0,1-11.27-11.26Z", 716.45, 716.44).parse())
 	};

-	//vector<std::shared_ptr<ElementStyle>> style = {
-	//	std::make_shared<ElementStyle>(std::vector<GLfloat>{
-	//	//strokeStyle
-	//	//stroke
-	//	1,
-	//		//strokeWidth
-	//		0.02,
-	//		//strokeEndType
-	//		0, //圆角
-	//		//strokeFillType
-	//		0, //单色
-	//		//线类型
-	//		0, //双侧
-	//		//线外描边宽度
-	//		0,
-	//		//线外描边方式
-	//		0, //单色
-	//		//strokeFillColorMetallicRoughness
-	//		1,0,1, 0,0.8,
-	//	}),
-	//	std::make_shared<ElementStyle>(std::vector<GLfloat>{
-	//		//fillStyle
-	//		//fill
-	//		0,
-	//			//fillType
-	//			0, //单色
-	//			//fillColorMetallicRoughness
-	//			240 / 255., 220 / 255., 160 / 255., 0.996, 0.18,
-	//		}),
-	//		std::make_shared<ElementStyle>(std::vector<GLfloat>{
-	//			//fillStyle
-	//			//fill
-	//			0,
-	//				//fillType
-	//				0, //单色
-	//				//fillColorMetallicRoughness
-	//				24 / 255., 220 / 255., 16 / 255., 0., 0.18,
-	//			}),
-	//};
-
 	vector<std::shared_ptr<ElementStyle>> style = {
 		std::make_shared<ElementStyleFillDemo>(),
 		std::make_shared<ElementStyleStrokeDemo>(0.02),
@ -311,164 +252,25 @@ GLuint Renderer::Model::loadPainting(std::string path)
 		std::make_shared<Element>(Element{ contour[2], style[0]}),
 	};
 	Painting painting;
+
+	if (path == "17876391417123941155.jpg")
+	{
+		painting.addElement(*element[0], ElementTransform{ glm::vec2(-0.5,-0.45), glm::vec2(0.6,0.7), 45, glm::bvec2(true, false), 0 });
+		painting.addElement(*element[1], ElementTransform{ glm::vec2(-0.45,0.45), glm::vec2(0.5,0.5), 0, glm::bvec2(false), 0 });
+		painting.addElement(*element[2], ElementTransform{ glm::vec2(0.5,-0.45), glm::vec2(0.6,0.7), 0, glm::bvec2(false), 0 });
+	}
+	else
+	{
 		for (int i = 0; i < 1000; i++)
 		{
 			float x = (float)rand() / RAND_MAX * 2 - 1;
 			float y = (float)rand() / RAND_MAX * 2 - 1;
-		float z = 0.05 + x;//(float)rand() / RAND_MAX * (0.1) + x;
-		float w = 0.05 + y;//(float)rand() / RAND_MAX * (0.1) + y;
-		//rootBvhTreeData.push_back(BvhTreeData(QVector4D(x, y, z, w), 0, encodeZIndexAngle(1, (float)rand() / RAND_MAX * 360)));
-		//painting.addElement(element[i%3], QVector4D(x, y, z, w), (float)rand() / RAND_MAX * 360, 1);
-		//painting.addElement(*element[i%3], ElementTransform{ glm::vec2(x,y), glm::vec2(0.05), (float)rand() / RAND_MAX * 360, glm::bvec2(false), 0 });
-
+			painting.addElement(*element[i%3], ElementTransform{ glm::vec2(x,y), glm::vec2(0.05), (float)rand() / RAND_MAX * 360, glm::bvec2(false), 0 });
+		}
 	}
-	painting.addElement(*element[0], ElementTransform{ glm::vec2(-0.5,-0.45), glm::vec2(0.6,0.7), 45, glm::bvec2(true, false), 0 });
-	painting.addElement(*element[1], ElementTransform{ glm::vec2(-0.45,0.45), glm::vec2(0.5,0.5), 0, glm::bvec2(false), 0 });
-	painting.addElement(*element[2], ElementTransform{ glm::vec2(0.5,-0.45), glm::vec2(0.6,0.7), 0, glm::bvec2(false), 0 });


-	//painting.addElement(element[0], QVector4D(-0.8, -0.8, -0.2, -0.1), 0, 0);
-	//painting.addElement(element[1], QVector4D(-0.7, 0.2, -0.2, 0.7), 0, 0);
-	//painting.addElement(element[2], QVector4D(0.2, -0.8, 0.8, -0.1), 0, 0);
-
 	painting.generateBuffers(glFunc);
-	/////////////////////////////////////////////////////////////////////////////////////////////////
-	std::vector<GLuint> bvhChildren0 = {
-		//root
-		1,2,
-		3,4, 5,6,
-		encodeChild(2),0, encodeChild(1),GLuint(30. / 360 * 65536 + 1 * 65536) /*右儿子用来表示旋转角度和zIndex*/, 	encodeChild(3),0, 	encodeChild(0),0,
-		//elememt0
-		1,2,
-		encodeChild(20)/*contour索引，由于contour不定长，这里需要给到contour在elementIndex中位置*/,0/*封闭图形*/, encodeChild(24), 0,
-		//elememt1
-		encodeChild(12)/*contour索引*/, 1/*线*/
-
-	};
-	std::vector<QVector4D> bvhBounds0 = {
-		//root
-		QVector4D(-1,-1,1,1),
-		QVector4D(-0.9,-0.9,-0.1,0.9),  QVector4D(0.1, -0.9,0.9,0.9),
-		QVector4D(-0.8,-0.8,-0.2,-0.1),  QVector4D(-0.7,0.2,-0.2,0.7), QVector4D(0.2,-0.8,0.8,-0.1), QVector4D(0.3,0.2,0.7,0.7),
-		//elememt0
-		QVector4D(-1,-1,1,1),
-		QVector4D(-1,-1,-0.2,1), QVector4D(-0.2,-1,1,1),
-		//elememt1
-		QVector4D(-1,-1,1,1)
-	};
-
-	/**
-	 * @[0] elementBvhRoot
-	 * @[1] styleOffset
-	 * @[2] pointsOffset
-	 * @[3] linesOffset
-	 */
-	std::vector<glm::uvec4> elementOffset0 = {
-		//element0
-		glm::uvec4(7, 14, 0, 0),
-		//element1
-		glm::uvec4(10, 39, 21, 28),
-		//element2
-		glm::uvec4(10, 51, 21, 28),
-		//element3
-		glm::uvec4(10, 63, 21, 28),
-	};
-
-	std::vector<GLuint> elementIndex0 = {
-		//element0
-		//lines, 全部当作三阶贝塞尔, 每条线四个点索引
-		0,1,1,2,
-		0,0,3,3,
-		3,4,4,5,
-		2,2,5,5,
-		5,5,6,6,
-		//contours, 第一个元素为线数，后面为轮廓线索引
-		3, 1,2,4,
-		3, 0,2,3,
-		//element1
-		//lines
-		0,7,8,1,
-		1,1,4,4,
-		5,5,6,6,
-		//contours
-		3, 0,1,2
-	};
-
-	std::vector<GLfloat> elementData0 = {
-		//element0
-		//points
-		-0.2,1, -0.2,-0.2, 1,-0.2, -1,1, -1,-1, 1,-1, 1,1,
-		//fillStyle
-		//fill
-		0,
-		//fillType
-		0, //单色
-		//fillColorMetallicRoughness
-		1,1,0, 0,0.8,
-
-		//element1
-		//points
-		0.5,-0.5, 0.5,0.5, -0.2,0.5, -0.5,0.2, -0.5,-0.5, -0.8,-0.5, -0.8,0.5, 0.5,-0.4, 0.5,0.4,
-		//strokeStyle
-		//stroke
-		1,
-		//strokeWidth
-		0.1,
-		//strokeEndType
-		0, //圆角
-		//strokeFillType
-		0, //单色
-		//线类型
-		2, //左侧
-		//线外描边宽度
-		0,
-		//线外描边方式
-		0, //单色
-		//strokeFillColorMetallicRoughness
-		1,0,1, 0,0.8,
-		//strokeStyle
-		//stroke
-		1,
-		//strokeWidth
-		0.1,
-		//strokeEndType
-		0, //圆角
-		//strokeFillType
-		2, //单色
-		//线类型
-		1, //左侧
-		//线外描边宽度
-		0,
-		//线外描边方式
-		0, //单色
-		//strokeFillColorMetallicRoughness
-		1,0,1, 0,0.8,
-		//strokeStyle
-		//stroke
-		1,
-		//strokeWidth
-		0.1,
-		//strokeEndType
-		0, //圆角
-		//strokeFillType
-		1, //单色
-		//线类型
-		0, //左侧
-		//线外描边宽度
-		0,
-		//线外描边方式
-		0, //单色
-		//strokeFillColorMetallicRoughness
-		1,0,1, 0,0.8,
-	};
-
-
-	//m_mesh->paintingIndex = paintingHelper->addPainting(bounds.size(), std::vector<GLuint>(children.begin()+2, children.end()), bounds,
-	//	elementOffset, elementIndex, elementData);
-	/*GLuint index = paintingHelper->addPainting(bvhChildren0, bvhBounds0,
-		elementOffset0, elementIndex0, elementData0);*/
-		//GLuint index = paintingHelper->addPainting(painting);
-		//paintingLoaded.insert({ path, index });

 	auto index = vtManager->createVirtualTexture(painting);
 	paintingLoaded.emplace(path, index);
--- a/ArchitectureColoredPainting/src/Renderer/Painting/Element.h
+++ b/ArchitectureColoredPainting/src/Renderer/Painting/Element.h
@ -1,6 +1,7 @@
 #pragma once
 #include <vector>
 #include <qopengl.h>
+#include <QPainterPath>
 #include "Line.h"
 #include "ElementStyle.h"

--- a/ArchitectureColoredPainting/src/Renderer/Painting/Painting.h
+++ b/ArchitectureColoredPainting/src/Renderer/Painting/Painting.h
@ -69,7 +69,6 @@ namespace Renderer
 		std::array<GLuint, 5> buffers;

 		Painting();
-		void addElement(ElementWithTransform element);
 		void addElement(const Element& element, const ElementTransform& transform);
 		void addElement(std::shared_ptr<Element> element, QVector4D bound, float rotation, int zIndex);
 		void generateBuffers(QOpenGLFunctions_4_5_Compatibility* glFunc);
@ -81,6 +80,8 @@ namespace Renderer
 		std::unordered_map<std::shared_ptr<MaterialStyle>, GLuint> stylePool;
 		std::map<BaseElement, GLuint> elementPool;
 		std::vector<ElementWithTransform> elements;
+
+		void addElement(ElementWithTransform element);
 		void insertContourBuffer(std::shared_ptr<ContourBuffer> buffer);
 		BvhTreeData encodeElementLeaf(ElementWithTransform e);
 	};
--- a/ArchitectureColoredPainting/src/Renderer/RendererGLWidget.cpp
+++ b/ArchitectureColoredPainting/src/Renderer/RendererGLWidget.cpp
@ -296,23 +296,8 @@ void RendererGLWidget::paintGL()
 {
 	QOpenGLFunctions_4_5_Core* glFunc = QOpenGLContext::currentContext()->versionFunctions<QOpenGLFunctions_4_5_Core>();

-	pageIdDownsampleProgramPtr->bind();
-	gl->BindImageTexture(3, gbuffers[4], 0, GL_FALSE, 0, GL_READ_WRITE, GL_RG16UI);
-	gl->DispatchCompute(ceil(frameWidth / 8. / 8.), ceil(frameWidth / 8. / 8.), 1);
-	pageIdDownsampleProgramPtr->release();
-	std::vector<glm::u16vec2> pixels;
-	pixels.resize(ceil(frameWidth / 8.) * ceil(frameHeight / 8.));
-	fboPtr->bind();
-	gl->ReadBuffer(GL_COLOR_ATTACHMENT4);
-	gl->ReadnPixels(0, 0, ceil(frameWidth / 8.), ceil(frameHeight / 8.), GL_RG_INTEGER, GL_UNSIGNED_SHORT, pixels.size() * sizeof(glm::u16vec2), pixels.data());
-	//gl->GetTextureSubImage(gbuffers[4], 0, 0, 0, 0, ceil(frameWidth / 8.), ceil(frameHeight / 8.), 1, GL_RG_INTEGER, GL_UNSIGNED_SHORT, pixels.size() * sizeof(glm::u16vec2), pixels.data());
-	fboPtr->release();
-	vtManager->tryUpdatePages(pixels);
-
-
 	gl->BeginQuery(GL_TIME_ELAPSED, timeQuery);

-
 	gl->Enable(GL_CULL_FACE);

 	light.lightDirection.setX(cos(qDegreesToRadians(sunPitch)) * cos(qDegreesToRadians(sunYaw)));
@ -383,6 +368,21 @@ void RendererGLWidget::paintGL()
 			}
 		}
 		plainProgramPtr->release();
+
+		pageIdDownsampleProgramPtr->bind();
+		gl->BindImageTexture(3, gbuffers[4], 0, GL_FALSE, 0, GL_READ_WRITE, GL_RG16UI);
+		gl->Uniform2ui(0, rand() % 8, rand() % 8);
+		gl->DispatchCompute(ceil(frameWidth / 8. / 8.), ceil(frameWidth / 8. / 8.), 1);
+		pageIdDownsampleProgramPtr->release();
+		std::vector<glm::u16vec2> pixels;
+		pixels.resize(ceil(frameWidth / 8.) * ceil(frameHeight / 8.));
+		//fboPtr->bind();
+		gl->ReadBuffer(GL_COLOR_ATTACHMENT4);
+		gl->ReadnPixels(0, 0, ceil(frameWidth / 8.), ceil(frameHeight / 8.), GL_RG_INTEGER, GL_UNSIGNED_SHORT, pixels.size() * sizeof(glm::u16vec2), pixels.data());
+		//gl->GetTextureSubImage(gbuffers[4], 0, 0, 0, 0, ceil(frameWidth / 8.), ceil(frameHeight / 8.), 1, GL_RG_INTEGER, GL_UNSIGNED_SHORT, pixels.size() * sizeof(glm::u16vec2), pixels.data());
+		//fboPtr->release();
+		vtManager->tryUpdatePages(pixels);
+
 		fboPtr->release();
 	}
 	gl->Finish();