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screen blur without creating a texture

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minjaesong
2021-12-12 13:09:59 +09:00
parent 90a794cc7b
commit 06a6d2774c
6 changed files with 107 additions and 110 deletions
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91
src/net/torvald/terrarum/ui/Toolkit.kt
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@@ -9,9 +9,9 @@ import com.badlogic.gdx.utils.Disposable
import net.torvald.random.HQRNG
import net.torvald.terrarum.App
import net.torvald.terrarum.CommonResourcePool
import net.torvald.terrarum.FrameBufferManager
import net.torvald.terrarum.inAction
import net.torvald.terrarumsansbitmap.gdx.TextureRegionPack
import org.lwjgl.opengl.GL20
/**
@@ -31,8 +31,10 @@ object Toolkit : Disposable {
}
private val shaderKawaseDown = App.loadShaderFromFile("assets/shaders/4096.vert", "assets/shaders/boxdown.frag")
private val shaderKawaseUp = App.loadShaderFromFile("assets/shaders/4096.vert", "assets/shaders/boxup.frag")
private val shaderKawaseDown = App.loadShaderFromFile("assets/shaders/4096.vert", "assets/shaders/kawasedown.frag")
private val shaderKawaseUp = App.loadShaderFromFile("assets/shaders/4096.vert", "assets/shaders/kawaseup.frag")
private val shaderBoxDown = App.loadShaderFromFile("assets/shaders/4096.vert", "assets/shaders/boxdown.frag")
private val shaderBoxUp = App.loadShaderFromFile("assets/shaders/4096.vert", "assets/shaders/boxup.frag")
private lateinit var fboBlur: FloatFrameBuffer
private lateinit var fboBlurHalf: FloatFrameBuffer
@@ -75,11 +77,8 @@ object Toolkit : Disposable {
shaderKawaseUp.dispose()
shaderKawaseDown.dispose()
// try { blurtex0.dispose() } catch (e: GdxRuntimeException) {}
// try { blurtex1.dispose() } catch (e: GdxRuntimeException) {}
// try { blurtex2.dispose() } catch (e: GdxRuntimeException) {}
// try { blurtex3.dispose() } catch (e: GdxRuntimeException) {}
shaderBoxDown.dispose()
shaderBoxUp.dispose()
}
val drawWidth: Int
@@ -151,31 +150,21 @@ object Toolkit : Disposable {
}
// private var blurtex0 = Texture(16, 16, Pixmap.Format.RGBA8888)
private var blurtex1 = Texture(16, 16, Pixmap.Format.RGBA8888)
private var blurtex2 = Texture(16, 16, Pixmap.Format.RGBA8888)
private var blurtex3 = Texture(16, 16, Pixmap.Format.RGBA8888)
private lateinit var blurtex0: Texture
private lateinit var blurtex1: Texture
private lateinit var blurtex2: Texture
private lateinit var blurtex3: Texture
fun blurEntireScreen(batch: SpriteBatch, camera: OrthographicCamera, blurRadius0: Float, x: Int, y: Int, w: Int, h: Int) {
batch.end()
val blurRadius = blurRadius0
// blurtex0.dispose()
// blurtex1.dispose()
// blurtex2.dispose()
// blurtex3.dispose()
val pixmap = Pixmap.createFromFrameBuffer(x, y, w, h)
val texture: Texture = Texture(pixmap)
val t = TextureRegion(texture, 0, h, w, -h)
pixmap.dispose()
val renderTarget = FrameBufferManager.peek()
/*fboBlurHalf.inAction(camera, batch) {
t.texture.bind(0)
blurtex0 = renderTarget.colorBufferTexture
blurtex0.setFilter(Texture.TextureFilter.Linear, Texture.TextureFilter.Linear)
blurtex0.bind(0)
shaderKawaseDown.bind()
shaderKawaseDown.setUniformMatrix("u_projTrans", camera.combined)
shaderKawaseDown.setUniformi("u_texture", 0)
@@ -185,6 +174,7 @@ object Toolkit : Disposable {
fboBlurQuarter.inAction(camera, batch) {
blurtex1 = fboBlurHalf.colorBufferTexture
blurtex1.setFilter(Texture.TextureFilter.Linear, Texture.TextureFilter.Linear)
blurtex1.bind(0)
shaderKawaseDown.bind()
shaderKawaseDown.setUniformMatrix("u_projTrans", camera.combined)
@@ -195,6 +185,7 @@ object Toolkit : Disposable {
fboBlurHalf.inAction(camera, batch) {
blurtex2 = fboBlurQuarter.colorBufferTexture
blurtex2.setFilter(Texture.TextureFilter.Linear, Texture.TextureFilter.Linear)
blurtex2.bind(0)
shaderKawaseUp.bind()
shaderKawaseUp.setUniformMatrix("u_projTrans", camera.combined)
@@ -203,28 +194,6 @@ object Toolkit : Disposable {
blurWriteQuad2.render(shaderKawaseUp, GL20.GL_TRIANGLES)
}
// TODO apply dithering on this specific draw call
fboBlur.inAction(camera, batch) {
blurtex3 = fboBlurHalf.colorBufferTexture
blurtex3.bind(0)
shaderKawaseUp.bind()
shaderKawaseUp.setUniformMatrix("u_projTrans", camera.combined)
shaderKawaseUp.setUniformi("u_texture", 0)
shaderKawaseUp.setUniformf("halfpixel", blurRadius / fboBlurHalf.width, blurRadius / fboBlurHalf.height)
blurWriteQuad.render(shaderKawaseUp, GL20.GL_TRIANGLES)
}*/
fboBlurHalf.inAction(camera, batch) {
t.texture.setFilter(Texture.TextureFilter.Linear, Texture.TextureFilter.Linear)
t.texture.bind(0)
shaderKawaseDown.bind()
shaderKawaseDown.setUniformMatrix("u_projTrans", camera.combined)
shaderKawaseDown.setUniformi("u_texture", 0)
shaderKawaseDown.setUniformf("halfpixel", blurRadius / fboBlurHalf.width, blurRadius / fboBlurHalf.height)
blurWriteQuad2.render(shaderKawaseDown, GL20.GL_TRIANGLES)
}
fboBlur.inAction(camera, batch) {
blurtex3 = fboBlurHalf.colorBufferTexture
blurtex3.setFilter(Texture.TextureFilter.Linear, Texture.TextureFilter.Linear)
@@ -234,9 +203,33 @@ object Toolkit : Disposable {
shaderKawaseUp.setUniformi("u_texture", 0)
shaderKawaseUp.setUniformf("halfpixel", blurRadius / fboBlurHalf.width, blurRadius / fboBlurHalf.height)
blurWriteQuad.render(shaderKawaseUp, GL20.GL_TRIANGLES)
}*/
////////////////////////////////////////////////////////////////////////
fboBlurHalf.inAction(camera, batch) {
blurtex2 = renderTarget.colorBufferTexture
blurtex2.setFilter(Texture.TextureFilter.Linear, Texture.TextureFilter.Linear)
blurtex2.bind(0)
shaderBoxDown.bind()
shaderBoxDown.setUniformMatrix("u_projTrans", camera.combined)
shaderBoxDown.setUniformi("u_texture", 0)
shaderBoxDown.setUniformf("halfpixel", blurRadius / fboBlurHalf.width, blurRadius / fboBlurHalf.height)
blurWriteQuad2.render(shaderBoxDown, GL20.GL_TRIANGLES)
}
t.texture.dispose()
fboBlur.inAction(camera, batch) {
blurtex3 = fboBlurHalf.colorBufferTexture
blurtex3.setFilter(Texture.TextureFilter.Linear, Texture.TextureFilter.Linear)
blurtex3.bind(0)
shaderBoxUp.bind()
shaderBoxUp.setUniformMatrix("u_projTrans", camera.combined)
shaderBoxUp.setUniformi("u_texture", 0)
shaderBoxUp.setUniformf("halfpixel", blurRadius / fboBlurHalf.width, blurRadius / fboBlurHalf.height)
blurWriteQuad.render(shaderBoxUp, GL20.GL_TRIANGLES)
}
Gdx.gl.glActiveTexture(GL20.GL_TEXTURE0) // so that batch that comes next will bind any tex to it