GameDevArea/Global-Gam-Jam-2017
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add FrameBuffer Object

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MrDev023 2017-01-14 19:32:47 +01:00
parent 18bb7ab823
commit eda25cf2c9
7 changed files with 304 additions and 227 deletions
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374
.idea/workspace.xml
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@ -2,18 +2,13 @@
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12
res/shaders/fbo.frag Normal file
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@ -0,0 +1,12 @@
#version 150
//Il n’y a pas de layout(location=i) dans OpenGL < 3.3, mais tu peux utiliser glFragData[i] = myvalue à la place.
uniform sampler2D materialTex;
in vec2 fragTexCoord;
in vec3 fragVert;
out vec4 finalColor;
void main() {
finalColor = texture(materialTex, fragTexCoord);
}

18
res/shaders/fbo.vert Normal file
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@ -0,0 +1,18 @@
#version 150
uniform mat4 projection;
in vec3 vert;
in vec2 vertTexCoord;
out vec3 fragVert;
out vec2 fragTexCoord;
void main() {
// Pass some variables to the fragment shader
fragTexCoord = vertTexCoord;
fragVert = vert;
// Apply all matrix transformations to vert
gl_Position = projection * vec4(vert, 1);
}

6
res/shaders/main.frag
View file

@ -1,12 +1,12 @@
#version 150
#version 330
//Il n’y a pas de layout(location=i) dans OpenGL < 3.3, mais tu peux utiliser glFragData[i] = myvalue à la place.
uniform sampler2D materialTex;
uniform vec4 color;
in vec2 fragTexCoord;
in vec3 fragVert;
out vec4 finalColor;
layout(location = 0) out vec4 finalColor;
void main() {
finalColor = texture(materialTex, fragTexCoord) * color;

8
src/globalgamejam/game/MainGame.java
View file

@ -3,7 +3,6 @@ package globalgamejam.game;
import globalgamejam.render.*;
import globalgamejam.tiles.TestTile;
import globalgamejam.tiles.Tile;
import org.lwjgl.opengl.GL11;
import java.util.ArrayList;
@ -13,9 +12,11 @@ import java.util.ArrayList;
public class MainGame extends Game{
private ArrayList<Tile> tiles;
private FrameBufferObject fbo;
@Override
public void init() {
fbo = new FrameBufferObject();
tiles = new ArrayList<Tile>();
TestTile t = new TestTile();
t.getTransform().translate(100,100,0);
@ -31,7 +32,11 @@ public class MainGame extends Game{
@Override
public void render2D() {
fbo.startRenderToFBO();
for(Tile t : tiles)t.render();
fbo.stopRenderToFBO();
fbo.renderFBO();
}
@ -42,6 +47,7 @@ public class MainGame extends Game{
@Override
public void destroy() {
fbo.destroy();
tiles.clear();
}

110
src/globalgamejam/render/FrameBufferObject.java Normal file
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@ -0,0 +1,110 @@
package globalgamejam.render;
import static org.lwjgl.opengl.GL11.*;
import static org.lwjgl.opengl.GL30.*;
import static org.lwjgl.opengl.GL32.*;
import globalgamejam.Main;
import globalgamejam.math.Matrix4f;
import globalgamejam.math.Vector2f;
import org.lwjgl.BufferUtils;
import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.GL13;
import org.lwjgl.opengl.GL15;
import org.lwjgl.opengl.GL20;
import java.nio.FloatBuffer;
import java.nio.IntBuffer;
/**
* Created by MrDev023 on 14/01/2017.
*/
public class FrameBufferObject {
private int fbo,fboTexID,renderID,vbo,size;
public FrameBufferObject(){
int width = Main.WIDTH;
int height = Main.HEIGHT;
this.fbo = glGenFramebuffers();
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
//Creation de la texture qui va contenir la sortie RGB du shader
int renderedTexture = glGenTextures();
glBindTexture(GL_TEXTURE_2D, renderedTexture);
glTexImage2D(GL_TEXTURE_2D, 0,GL_RGB, width, height, 0,GL_RGB, GL_UNSIGNED_BYTE, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
//Creation du tampon de profondeur
int depthrenderbuffer = glGenRenderbuffers();
glBindRenderbuffer(GL_RENDERBUFFER, depthrenderbuffer);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, width, height);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, depthrenderbuffer);
//Definir le render Texture
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,GL_TEXTURE_2D, renderedTexture, 0);
IntBuffer drawBuffs = BufferUtils.createIntBuffer(1);
drawBuffs.put(0, GL_COLOR_ATTACHMENT0);
GL20.glDrawBuffers(drawBuffs);
if(glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
throw new IllegalStateException("FBO not loaded !");
fboTexID = renderedTexture;
renderID = depthrenderbuffer;
this.vbo = GL15.glGenBuffers();
float[] a = new float[]{
0,0, 0.0f,0.0f,
1,0, 1.0f,0.0f,
1,1, 1.0f,1.0f,
0,1, 0.0f,1.0f
};
FloatBuffer buffer = BufferUtils.createFloatBuffer(a.length);
buffer.put(a).flip();
size = a.length/(2+2);
GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, vbo);
GL15.glBufferData(GL15.GL_ARRAY_BUFFER, buffer, GL15.GL_STATIC_DRAW);
GL20.glEnableVertexAttribArray(Shaders.MAIN_SHADERS.getAttribLocation("vert"));
GL20.glVertexAttribPointer(Shaders.MAIN_SHADERS.getAttribLocation("vert"), 2, GL11.GL_FLOAT, false, (2+2)*4, 0);
GL20.glEnableVertexAttribArray(Shaders.MAIN_SHADERS.getAttribLocation("vertTexCoord"));
GL20.glVertexAttribPointer(Shaders.MAIN_SHADERS.getAttribLocation("vertTexCoord"), 2, GL11.GL_FLOAT, true, (2+2)*4, 2*4);
GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
}
public void startRenderToFBO(){
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
glViewport(0,0,Main.WIDTH,Main.HEIGHT);
}
public void stopRenderToFBO(){
glBindFramebuffer(GL_FRAMEBUFFER, 0);
}
public void renderFBO(){
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glViewport(0,0,Main.WIDTH,Main.HEIGHT);
Shaders.MAIN_FBO.bind();
Shaders.MAIN_FBO.uniform("projection", (new Matrix4f()).Ortho2D(0,1,0,1,-1,1).mul(new Matrix4f().translate(.5f,.5f,0)));
GL13.glActiveTexture(GL13.GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, fboTexID);
GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, vbo);
GL11.glDrawArrays(GL11.GL_QUADS, 0, size);
GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
glBindTexture(GL_TEXTURE_2D, 0);
Shaders.MAIN_SHADERS.unbind();
}
public void destroy(){
glDeleteTextures(fboTexID);
glDeleteRenderbuffers(renderID);
glDeleteFramebuffers(fbo);
}
}

3
src/globalgamejam/render/Shaders.java
View file

@ -12,11 +12,12 @@ public class Shaders {
public int program;
public static Shaders MAIN_SHADERS;
public static Shaders MAIN_SHADERS,MAIN_FBO;
static{
try{
MAIN_SHADERS = new Shaders("res/shaders/main.vert","res/shaders/main.frag");
MAIN_FBO = new Shaders("res/shaders/fbo.vert","res/shaders/fbo.frag");
}catch(Exception e){
e.printStackTrace();
}