[feature] 增加若干示例，迭代版本到Qt6.6.0

Italink · Apr 9, 2023 · 79d7465 · 79d7465
1 parent 9d124c4
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diff --git a/Docs/README.md b/Docs/README.md
@@ -75,9 +75,9 @@ comments: true
 - 图形技术
     - [ ] 样条线
     - [ ] 文字渲染
+    - [x] 天空盒
     - [x] 静态网格体
     - [x] 骨骼网格体及骨骼动画
-    - [x] 天空盒
     - [x] GPU粒子
     - [ ] Shader Toy
     - [ ] 后期滤镜

diff --git a/Source/0-QEngineUtilities b/Source/0-QEngineUtilities
diff --git a/Source/1-GraphicsAPI/02-GraphicRenderingPipeline/Source/TriangleWindow.h b/Source/1-GraphicsAPI/02-GraphicRenderingPipeline/Source/TriangleWindow.h
diff --git a/Source/1-GraphicsAPI/02-GraphicRenderingPipeline/Source/main.cpp b/Source/1-GraphicsAPI/02-GraphicRenderingPipeline/Source/main.cpp
@@ -1,5 +1,122 @@
 #include <QApplication>
-#include "TriangleWindow.h"
+#include "Render/RHI/QRhiWindow.h"
+
+static float VertexData[] = {
+	//position(xy)		color(rgba)
+	 0.0f,  -0.5f,		1.0f, 0.0f, 0.0f, 1.0f,
+	-0.5f,   0.5f,		0.0f, 1.0f, 0.0f, 1.0f,
+	 0.5f,   0.5f,		0.0f, 0.0f, 1.0f, 1.0f,
+};
+
+class TriangleWindow : public QRhiWindow {
+private:
+	QRhiEx::Signal sigInit;
+	QRhiEx::Signal sigSubmit;
+	QScopedPointer<QRhiBuffer> mVertexBuffer;
+	QScopedPointer<QRhiShaderResourceBindings> mShaderBindings;
+	QScopedPointer<QRhiGraphicsPipeline> mPipeline;
+public:
+	TriangleWindow(QRhiWindow::InitParams inInitParams) :QRhiWindow(inInitParams) {
+		sigInit.request();
+		sigSubmit.request();
+	}
+protected:
+	void initRhiResource() {
+		mVertexBuffer.reset(mRhi->newBuffer(QRhiBuffer::Immutable, QRhiBuffer::VertexBuffer, sizeof(VertexData)));
+		mVertexBuffer->create();
+
+		mShaderBindings.reset(mRhi->newShaderResourceBindings());															//创建绑定
+		mShaderBindings->create();
+
+		mPipeline.reset(mRhi->newGraphicsPipeline());
+
+		mPipeline->setShaderResourceBindings(mShaderBindings.get());														//绑定到流水线中华
+
+		QRhiGraphicsPipeline::TargetBlend targetBlend;
+		targetBlend.enable = false;
+		mPipeline->setTargetBlends({ QRhiGraphicsPipeline::TargetBlend() });
+
+		mPipeline->setSampleCount(mSwapChain->sampleCount());
+
+		mPipeline->setDepthTest(false);
+		mPipeline->setDepthOp(QRhiGraphicsPipeline::Always);
+		mPipeline->setDepthWrite(false);
+
+
+		QRhiVertexInputLayout inputLayout;
+		inputLayout.setBindings({
+			QRhiVertexInputBinding(6 * sizeof(float))		//定义每个VertexBuffer，单组顶点数据的跨度，这里是 6 * sizeof(float)，可以当作是GPU会从Buffer0（0是Index）读取 6 * sizeof(float) 传给 Vertex Shader
+		});
+
+		inputLayout.setAttributes({
+			QRhiVertexInputAttribute(0, 0 , QRhiVertexInputAttribute::Float2, 0),					// 从每组顶点数据的位置 0 开始作为 Location0（Float2） 的起始地址
+			QRhiVertexInputAttribute(0, 1 , QRhiVertexInputAttribute::Float4, sizeof(float) * 2),	// 从每组顶点数据的位置 sizeof(float) * 2 开始作为 Location1（Float4） 的起始地址
+		});
+
+		mPipeline->setVertexInputLayout(inputLayout);
+
+		QShader vs = mRhi->newShaderFromCode(QShader::VertexStage, R"(#version 440
+			layout(location = 0) in vec2 position;		//这里需要与上面的inputLayout 对应
+			layout(location = 1) in vec4 color;
+
+			layout (location = 0) out vec4 vColor;		//输出变量到 fragment shader 中，这里的location是out的，而不是in
+
+			out gl_PerVertex { 
+				vec4 gl_Position;
+			};
+
+			void main(){
+				gl_Position = vec4(position,0.0f,1.0f);
+				vColor = color;
+			}
+		)");
+		Q_ASSERT(vs.isValid());
+
+		QShader fs = mRhi->newShaderFromCode(QShader::FragmentStage, R"(#version 440
+			layout (location = 0) in vec4 vColor;		//上一阶段的out变成了这一阶段的in
+			layout (location = 0) out vec4 fragColor;
+			void main(){
+				fragColor = vColor;
+			}
+		)");
+		Q_ASSERT(fs.isValid());
+
+		mPipeline->setShaderStages({
+			QRhiShaderStage(QRhiShaderStage::Vertex, vs),
+			QRhiShaderStage(QRhiShaderStage::Fragment, fs)
+		});
+		mPipeline->setRenderPassDescriptor(mSwapChainPassDesc.get());
+		mPipeline->create();
+	}
+
+	virtual void onRenderTick() override {
+		QRhiRenderTarget* currentRenderTarget = mSwapChain->currentFrameRenderTarget();
+		QRhiCommandBuffer* currentCmdBuffer = mSwapChain->currentFrameCommandBuffer();
+
+		if (sigInit.receive()) {
+			initRhiResource();
+		}
+		QRhiResourceUpdateBatch* resourceUpdates = nullptr;
+		if (sigSubmit.receive()) {
+			resourceUpdates = mRhi->nextResourceUpdateBatch();
+			resourceUpdates->uploadStaticBuffer(mVertexBuffer.get(), VertexData);				//上传顶点数据
+		}
+
+		const QColor clearColor = QColor::fromRgbF(0.2f, 0.2f, 0.2f, 1.0f);
+		const QRhiDepthStencilClearValue dsClearValue = { 1.0f,0 };
+
+		currentCmdBuffer->beginPass(currentRenderTarget, clearColor, dsClearValue, resourceUpdates);
+
+		currentCmdBuffer->setGraphicsPipeline(mPipeline.get());
+		currentCmdBuffer->setViewport(QRhiViewport(0, 0, mSwapChain->currentPixelSize().width(), mSwapChain->currentPixelSize().height()));
+		currentCmdBuffer->setShaderResources();
+		const QRhiCommandBuffer::VertexInput vertexBindings(mVertexBuffer.get(), 0);		//将 mVertexBuffer 绑定到Buffer0，内存偏移值为0
+		currentCmdBuffer->setVertexInput(0, 1, &vertexBindings);
+		currentCmdBuffer->draw(3);
+
+		currentCmdBuffer->endPass();
+	}
+};
 
 int main(int argc, char **argv)
 {

diff --git a/Source/1-GraphicsAPI/03-Shader/Source/main.cpp b/Source/1-GraphicsAPI/03-Shader/Source/main.cpp
@@ -3,21 +3,30 @@
 #include <QFile>
 #include <QDir>
 #include "private/qshaderbaker_p.h"
+#include "QWidget"
+#include "QTextEdit"
+#include "QTextBrowser"
+#include "QBoxLayout"
+#include "QPushButton"
+#include "QLabel"
 
-QShader newShaderFromCode(QShader::Stage stage, const char* code) {
+QShader createShaderFromCode(QShader::Stage stage, const char* code) {
 	QShaderBaker baker;
 	baker.setGeneratedShaderVariants({ QShader::StandardShader });
 	baker.setGeneratedShaders({
-		QShaderBaker::GeneratedShader{QShader::Source::SpirvShader,QShaderVersion(100)},
+	    QShaderBaker::GeneratedShader{ QShader::Source::SpirvShader,QShaderVersion(100)},
 		QShaderBaker::GeneratedShader{QShader::Source::GlslShader,QShaderVersion(430)},
 		QShaderBaker::GeneratedShader{QShader::Source::MslShader,QShaderVersion(12)},
 		QShaderBaker::GeneratedShader{QShader::Source::HlslShader,QShaderVersion(60)},
-		});
+	});
 
 	baker.setSourceString(code, stage);
 	QShader shader = baker.bake();
 	if (!shader.isValid()) {
-		qWarning(code);
+		QStringList codelist = QString(code).split('\n');
+		for (int i = 0; i < codelist.size(); i++) {
+			qWarning() << i + 1 << codelist[i].toLocal8Bit().data();
+		}
 		qWarning(baker.errorMessage().toLocal8Bit());
 	}
 	return shader;
@@ -26,7 +35,7 @@ QShader newShaderFromCode(QShader::Stage stage, const char* code) {
 QShader createShaderFromFile(QShader::Stage stage, const char* filename) {
 	QFile file(filename);
 	if (file.open(QIODevice::ReadOnly))
-		return newShaderFromCode(stage,file.readAll().constData());
+		return createShaderFromCode(stage,file.readAll().constData());
 	return QShader();
 }
 
@@ -45,30 +54,63 @@ void RunQtShaderTool() {
 	runShaderTool.setArguments({
 		"--glsl","430",
 		"--msl","12" ,
+		"--hlsl","60",
 		"-c", "color.frag",
 		"-o","color.frag.qsb" });
-	runShaderTool.start();
-	runShaderTool.waitForFinished();
-	qDebug() << runShaderTool.readAllStandardOutput().constData();
-
-	runShaderTool.setArguments({
-	"--glsl","430",
-	"--msl","12" ,
-	"-c", "color.vert",
-	"-o","color.vert.qsb" });
 
 	runShaderTool.start();
 	runShaderTool.waitForFinished();
-
 	qDebug() << runShaderTool.readAllStandardOutput().constData();
 }
 
 int main(int argc, char **argv)
 {
 	QApplication app(argc, argv);
-	QDir::setCurrent(RESOURCE_DIR);
+	QDir::setCurrent(RESOURCE_DIR"/Shader");
+
+	QWidget main;
+
+	QGridLayout* layout = new QGridLayout(&main);
+
+	QPushButton* btCompile = new QPushButton("Compile");
+	QTextEdit* editor = new QTextEdit;
+	QTextBrowser* glslBrowser = new QTextBrowser;
+	QTextBrowser* hlslBrowser = new QTextBrowser;
+	QTextBrowser* mslBrowser = new QTextBrowser;
+
+	layout->addWidget(btCompile, 0, 0);
+	layout->addWidget(editor, 1, 0);
+
+	layout->addWidget(new QLabel("GLSL"), 0, 1, Qt::AlignCenter);
+	layout->addWidget(glslBrowser, 1, 1);
+
+	layout->addWidget(new QLabel("HLSL"), 0, 2, Qt::AlignCenter);
+	layout->addWidget(hlslBrowser, 1, 2);
+
+	layout->addWidget(new QLabel("MSL"), 0, 3, Qt::AlignCenter);
+	layout->addWidget(mslBrowser, 1, 3);
+
+	editor->setTabStopDistance(16);
+	editor->setText(R"(#version 430
+layout(location = 0) in vec3 vColor;
+layout(location = 0) out vec4 outFragColor;
+layout(std140, binding = 0) uniform UniformBlock {
+	float opacity;
+}UBO;
+void main()
+{
+	outFragColor = vec4(vColor, UBO.opacity);
+})");
+
+	QObject::connect(btCompile, &QPushButton::clicked, [&]() {
+		QShader shader = createShaderFromCode(QShader::FragmentStage, editor->toPlainText().toLocal8Bit());
+		glslBrowser->setText(shader.shader(QShaderKey(QShader::GlslShader, QShaderVersion(430))).shader());
+		hlslBrowser->setText(shader.shader(QShaderKey(QShader::HlslShader, QShaderVersion(60))).shader());
+		mslBrowser->setText(shader.shader(QShaderKey(QShader::MslShader, QShaderVersion(12))).shader());
+	});
 
-	RunQtShaderTool();
+	main.setMinimumSize(1200,800);
+	main.show();
 
     return app.exec();
 }