Crabs/3DChess
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refactor: fbo

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This commit is contained in:
Simon Pribylski
2025-05-17 12:38:29 +02:00
parent 0a1582cf07
commit c80805fc66
3 changed files with 153 additions and 58 deletions
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41
app/src/main/java/chess/view/DDDrender/Renderer.java
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@@ -1,21 +1,15 @@
package chess.view.DDDrender;
import static org.lwjgl.opengl.GL11.GL_DEPTH_COMPONENT;
import static org.lwjgl.opengl.GL11.GL_RGB;
import static org.lwjgl.opengl.GL11.GL_TEXTURE_2D;
import static org.lwjgl.opengl.GL11.GL_UNSIGNED_BYTE;
import static org.lwjgl.opengl.GL11.GL_UNSIGNED_INT;
import static org.lwjgl.opengl.GL11.glBindTexture;
import static org.lwjgl.opengl.GL11.glTexImage2D;
import java.io.Closeable;
import java.io.IOException;
import java.nio.IntBuffer;
import org.joml.Matrix4f;
import org.joml.Vector3f;
import org.lwjgl.opengl.GL30;
import chess.view.DDDrender.opengl.FrameBuffer;
import chess.view.DDDrender.opengl.VertexArray;
import chess.view.DDDrender.shader.BoardShader;
import chess.view.DDDrender.shader.PieceShader;
@@ -24,41 +18,18 @@ import chess.view.DDDrender.shader.ShaderProgram;
public class Renderer implements Closeable {
private BoardShader boardShader;
private PieceShader pieceShader;
private FrameBuffer frameBuffer;
public Renderer() {
this.boardShader = new BoardShader();
this.pieceShader = new PieceShader();
}
public void Init() {
public void Init(float windowWidth, float widowHeight) {
boardShader.LoadShader();
pieceShader.LoadShader();
// The frame buffer
int fbo = GL30.glGenFramebuffers();
GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, fbo);
// The texture
int renderTexture = GL30.glGenTextures();
glBindTexture(GL_TEXTURE_2D, renderTexture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 800, 800, 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
GL30.glTexParameteri(GL_TEXTURE_2D, GL30.GL_TEXTURE_MAG_FILTER, GL30.GL_NEAREST);
GL30.glTexParameteri(GL_TEXTURE_2D, GL30.GL_TEXTURE_MIN_FILTER, GL30.GL_NEAREST);
// The depth buffer
int depthBuffer = GL30.glGenRenderbuffers();
GL30.glBindRenderbuffer(GL30.GL_RENDERBUFFER, depthBuffer);
GL30.glRenderbufferStorage(GL30.GL_RENDERBUFFER, GL_DEPTH_COMPONENT, 800, 800);
GL30.glFramebufferRenderbuffer(GL30.GL_FRAMEBUFFER, GL30.GL_DEPTH_ATTACHMENT, GL30.GL_RENDERBUFFER,
depthBuffer);
// Set "renderedTexture" as our colour attachement #0
GL30.glFramebufferTexture2D(GL30.GL_FRAMEBUFFER, GL30.GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, renderTexture, 0);
// Set the list of draw buffers.
int[] drawBuffers = { GL30.GL_COLOR_ATTACHMENT0 };
GL30.glDrawBuffers(drawBuffers);
this.frameBuffer = new FrameBuffer((int) windowWidth, (int) (widowHeight * 8.0f / 10.0f));
}
public void Update(Camera cam) {
@@ -89,6 +60,10 @@ public class Renderer implements Closeable {
vertexArray.Unbind();
}
public FrameBuffer getFrameBuffer() {
return frameBuffer;
}
public BoardShader getBoardShader() {
return boardShader;
}

50
app/src/main/java/chess/view/DDDrender/Window.java
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@@ -9,14 +9,18 @@ import org.lwjgl.system.*;
import chess.model.Coordinate;
import chess.view.AssetManager;
import chess.view.DDDrender.opengl.FrameBuffer;
import chess.view.DDDrender.world.Entity;
import chess.view.DDDrender.world.World;
import common.Signal1;
import imgui.ImFontConfig;
import imgui.ImGui;
import imgui.ImVec2;
import imgui.flag.ImGuiWindowFlags;
import imgui.gl3.ImGuiImplGl3;
import imgui.glfw.ImGuiImplGlfw;
import imgui.type.ImBoolean;
import imgui.type.ImInt;
import java.io.Closeable;
import java.io.IOException;
@@ -57,6 +61,9 @@ public class Window implements Closeable {
public final Signal0 OnImGuiTopRender = new Signal0();
public final Signal0 OnImGuiBottomRender = new Signal0();
private ImInt detailLevel = new ImInt(10);
private ImBoolean pixelatedFrame = new ImBoolean(true);
public Window(Renderer renderer, World world, Camera camera) {
this.renderer = new Renderer();
this.cam = camera;
@@ -153,7 +160,6 @@ public class Window implements Closeable {
(vidmode.height() - pHeight.get(0)) / 2);
glfwSetWindowSize(window, vidmode.width(), vidmode.height());
} // the stack frame is popped automatically
// Make the OpenGL context current
glfwMakeContextCurrent(window);
@@ -162,7 +168,8 @@ public class Window implements Closeable {
initImGui();
renderer.Init();
renderer.Init(vidmode.width(), vidmode.height());
} // the stack frame is popped automatically
// Enable v-sync
glfwSwapInterval(1);
@@ -172,13 +179,14 @@ public class Window implements Closeable {
}
private void render(float delta, float aspectRatio) {
cam.setAspectRatio(1.0f);
GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, 1);
glViewport(0, 0, 800, 800);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // clear the framebuffer
final FrameBuffer frameBuffer = this.renderer.getFrameBuffer();
cam.setAspectRatio(frameBuffer.getAspectRatio());
frameBuffer.Bind();
frameBuffer.Clear();
renderer.Update(cam);
renderWorld();
GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, 0);
frameBuffer.Unbind();
}
private void renderWorld() {
@@ -231,13 +239,25 @@ public class Window implements Closeable {
private void renderWindow() {
ImGui.showDemoWindow();
ImGui.begin("Main Window");
final FrameBuffer frameBuffer = this.renderer.getFrameBuffer();
final int frameWidth = (int) ImGui.getIO().getDisplaySizeX();
final int frameHeight = (int) (ImGui.getIO().getDisplaySizeY() * 8.0f / 10.0f);
ImGui.setNextWindowSize(ImGui.getIO().getDisplaySize());
ImGui.setNextWindowPos(new ImVec2());
ImGui.begin("Main Window", ImGuiWindowFlags.NoDecoration);
this.OnImGuiTopRender.emit();
ImVec2 mousePos = ImGui.getIO().getMousePos();
ImVec2 framePos = ImGui.getCursorScreenPos();
checkCursor(mousePos.x - framePos.x, 800 - (mousePos.y - framePos.y), 800, 800);
ImGui.image(1, new ImVec2(800, 800));
checkCursor(mousePos.x - framePos.x, frameHeight - (mousePos.y - framePos.y), frameWidth, frameHeight);
ImGui.image(frameBuffer.getRenderTexture(), new ImVec2(frameWidth, frameHeight));
this.OnImGuiBottomRender.emit();
if(ImGui.sliderInt("Niveau de détail", detailLevel.getData(), 1, 10)){
frameBuffer.Resize((int) ((float) frameWidth * detailLevel.get() / 10.0f), (int) ((float) frameHeight * detailLevel.get() / 10.0f));
}
if (ImGui.checkbox("Minecraft", pixelatedFrame)) {
frameBuffer.SetPixelScaling(pixelatedFrame.get());
}
ImGui.end();
}
@@ -254,8 +274,6 @@ public class Window implements Closeable {
glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
double lastTime = glfwGetTime();
int width[] = new int[1];
int height[] = new int[1];
glfwGetWindowSize(window, width, height);
@@ -266,23 +284,19 @@ public class Window implements Closeable {
newFrame();
double currentTime = glfwGetTime();
float deltaTime = (float) (currentTime - lastTime);
render(deltaTime, (float) width[0] / (float) height[0]);
render(ImGui.getIO().getDeltaTime(), (float) width[0] / (float) height[0]);
renderWindow();
ImGui.render();
implGl3.renderDrawData(ImGui.getDrawData());
lastTime = glfwGetTime();
glfwSwapBuffers(window); // swap the color buffers
// Poll for window events. The key callback above will only be
// invoked during this call.
glfwPollEvents();
executeTasks(deltaTime);
executeTasks(ImGui.getIO().getDeltaTime());
glfwGetWindowSize(window, width, height);
glViewport(0, 0, width[0], height[0]);

106
app/src/main/java/chess/view/DDDrender/opengl/FrameBuffer.java Normal file
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@@ -0,0 +1,106 @@
package chess.view.DDDrender.opengl;
import static org.lwjgl.opengl.GL11.GL_COLOR_BUFFER_BIT;
import static org.lwjgl.opengl.GL11.GL_DEPTH_BUFFER_BIT;
import static org.lwjgl.opengl.GL11.GL_DEPTH_COMPONENT;
import static org.lwjgl.opengl.GL11.GL_RGB;
import static org.lwjgl.opengl.GL11.GL_TEXTURE_2D;
import static org.lwjgl.opengl.GL11.GL_UNSIGNED_BYTE;
import static org.lwjgl.opengl.GL11.glBindTexture;
import static org.lwjgl.opengl.GL11.glClear;
import static org.lwjgl.opengl.GL11.glTexImage2D;
import static org.lwjgl.opengl.GL11.glViewport;
import org.lwjgl.opengl.GL30;
public class FrameBuffer {
private int fbo;
private int renderTexture;
private int depthBuffer;
private int width;
private int height;
public FrameBuffer(int width, int height) {
this.width = width;
this.height = height;
// The frame buffer
this.fbo = GL30.glGenFramebuffers();
GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, fbo);
// The texture
this.renderTexture = GL30.glGenTextures();
glBindTexture(GL_TEXTURE_2D, renderTexture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
GL30.glTexParameteri(GL_TEXTURE_2D, GL30.GL_TEXTURE_MAG_FILTER, GL30.GL_NEAREST);
GL30.glTexParameteri(GL_TEXTURE_2D, GL30.GL_TEXTURE_MIN_FILTER, GL30.GL_NEAREST);
// The depth buffer
this.depthBuffer = GL30.glGenRenderbuffers();
GL30.glBindRenderbuffer(GL30.GL_RENDERBUFFER, depthBuffer);
GL30.glRenderbufferStorage(GL30.GL_RENDERBUFFER, GL_DEPTH_COMPONENT, width, height);
GL30.glFramebufferRenderbuffer(GL30.GL_FRAMEBUFFER, GL30.GL_DEPTH_ATTACHMENT, GL30.GL_RENDERBUFFER,
depthBuffer);
// Set "renderedTexture" as our colour attachement #0
GL30.glFramebufferTexture2D(GL30.GL_FRAMEBUFFER, GL30.GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, renderTexture, 0);
// Set the list of draw buffers.
int[] drawBuffers = { GL30.GL_COLOR_ATTACHMENT0 };
GL30.glDrawBuffers(drawBuffers);
}
public void Bind() {
GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, this.fbo);
glViewport(0, 0, this.width, this.height);
}
public void Unbind() {
GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, 0);
}
public void Clear() {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // clear the framebuffer
}
public void Resize(int width, int height) {
this.width = width;
this.height = height;
GL30.glBindTexture(GL_TEXTURE_2D, this.renderTexture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, this.width, this.height, 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
GL30.glBindRenderbuffer(GL30.GL_RENDERBUFFER, this.depthBuffer);
GL30.glRenderbufferStorage(GL30.GL_RENDERBUFFER, GL_DEPTH_COMPONENT, this.width, this.height);
}
public void SetPixelScaling(boolean pixelated) {
glBindTexture(GL_TEXTURE_2D, renderTexture);
int method = pixelated ? GL30.GL_NEAREST : GL30.GL_LINEAR;
GL30.glTexParameteri(GL_TEXTURE_2D, GL30.GL_TEXTURE_MAG_FILTER, method);
GL30.glTexParameteri(GL_TEXTURE_2D, GL30.GL_TEXTURE_MIN_FILTER, method);
}
public float getAspectRatio() {
return (float) width / (float) height;
}
public int getWidth() {
return width;
}
public int getHeight() {
return height;
}
public int getRenderTexture() {
return renderTexture;
}
}