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will use 0.667f as a "kawase blur power constant"

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minjaesong
2021-12-10 09:36:02 +09:00
parent 5d18e37daa
commit 8ab852d18a
3 changed files with 10 additions and 4 deletions
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2
assets/shaders/kawasedown.frag
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@@ -7,6 +7,8 @@ varying vec4 v_color;
varying vec2 v_texCoords; varying vec2 v_texCoords;
uniform sampler2D u_texture; uniform sampler2D u_texture;
// recommended value: n / vec2(fbo_width, fbo_height) where n is something like {0.5, 1, 2, 4, ... }
// that, or simply 0.5, depending on how your uv coord works
uniform vec2 halfpixel = vec2(0.0, 0.0); uniform vec2 halfpixel = vec2(0.0, 0.0);
vec2 twister = vec2(1.0, -1.0); vec2 twister = vec2(1.0, -1.0);

2
assets/shaders/kawaseup.frag
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@@ -7,6 +7,8 @@ varying vec4 v_color;
varying vec2 v_texCoords; varying vec2 v_texCoords;
uniform sampler2D u_texture; uniform sampler2D u_texture;
// recommended value: n / vec2(fbo_width, fbo_height) where n is something like {0.5, 1, 2, 4, ... }
// that, or simply 0.5, depending on how your uv coord works
uniform vec2 halfpixel = vec2(0.0, 0.0); uniform vec2 halfpixel = vec2(0.0, 0.0);
vec2 doublex = vec2(2.0, 0.0); vec2 doublex = vec2(2.0, 0.0);

10
src/net/torvald/terrarum/modulebasegame/IngameRenderer.kt
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@@ -674,6 +674,8 @@ object IngameRenderer : Disposable {
batch.projectionMatrix = camera.combined batch.projectionMatrix = camera.combined
} }
private const val KAWASE_POWER = 0.667f
fun processKawaseBlur(outFbo: FrameBuffer) { fun processKawaseBlur(outFbo: FrameBuffer) {
// initialise readBuffer with untreated lightmap // initialise readBuffer with untreated lightmap
@@ -692,7 +694,7 @@ object IngameRenderer : Disposable {
shaderKawaseDown.bind() shaderKawaseDown.bind()
shaderKawaseDown.setUniformMatrix("u_projTrans", camera.combined) shaderKawaseDown.setUniformMatrix("u_projTrans", camera.combined)
shaderKawaseDown.setUniformi("u_texture", 0) shaderKawaseDown.setUniformi("u_texture", 0)
shaderKawaseDown.setUniformf("halfpixel", 1f / fboBlurHalf.width, 1f / fboBlurHalf.height) shaderKawaseDown.setUniformf("halfpixel", KAWASE_POWER / fboBlurHalf.width, KAWASE_POWER / fboBlurHalf.height)
blurWriteQuad2.render(shaderKawaseDown, GL20.GL_TRIANGLES) blurWriteQuad2.render(shaderKawaseDown, GL20.GL_TRIANGLES)
} }
@@ -702,7 +704,7 @@ object IngameRenderer : Disposable {
shaderKawaseDown.bind() shaderKawaseDown.bind()
shaderKawaseDown.setUniformMatrix("u_projTrans", camera.combined) shaderKawaseDown.setUniformMatrix("u_projTrans", camera.combined)
shaderKawaseDown.setUniformi("u_texture", 0) shaderKawaseDown.setUniformi("u_texture", 0)
shaderKawaseDown.setUniformf("halfpixel", 1f / fboBlurQuarter.width, 1f / fboBlurQuarter.height) shaderKawaseDown.setUniformf("halfpixel", KAWASE_POWER / fboBlurQuarter.width, KAWASE_POWER / fboBlurQuarter.height)
blurWriteQuad4.render(shaderKawaseDown, GL20.GL_TRIANGLES) blurWriteQuad4.render(shaderKawaseDown, GL20.GL_TRIANGLES)
} }
@@ -712,7 +714,7 @@ object IngameRenderer : Disposable {
shaderKawaseUp.bind() shaderKawaseUp.bind()
shaderKawaseUp.setUniformMatrix("u_projTrans", camera.combined) shaderKawaseUp.setUniformMatrix("u_projTrans", camera.combined)
shaderKawaseUp.setUniformi("u_texture", 0) shaderKawaseUp.setUniformi("u_texture", 0)
shaderKawaseUp.setUniformf("halfpixel", 1f / fboBlurQuarter.width, 1f / fboBlurQuarter.height) shaderKawaseUp.setUniformf("halfpixel", KAWASE_POWER / fboBlurQuarter.width, KAWASE_POWER / fboBlurQuarter.height)
blurWriteQuad2.render(shaderKawaseUp, GL20.GL_TRIANGLES) blurWriteQuad2.render(shaderKawaseUp, GL20.GL_TRIANGLES)
} }
@@ -722,7 +724,7 @@ object IngameRenderer : Disposable {
shaderKawaseUp.bind() shaderKawaseUp.bind()
shaderKawaseUp.setUniformMatrix("u_projTrans", camera.combined) shaderKawaseUp.setUniformMatrix("u_projTrans", camera.combined)
shaderKawaseUp.setUniformi("u_texture", 0) shaderKawaseUp.setUniformi("u_texture", 0)
shaderKawaseUp.setUniformf("halfpixel", 1f / fboBlurHalf.width, 1f / fboBlurHalf.height) shaderKawaseUp.setUniformf("halfpixel", KAWASE_POWER / fboBlurHalf.width, KAWASE_POWER / fboBlurHalf.height)
blurWriteQuad.render(shaderKawaseUp, GL20.GL_TRIANGLES) blurWriteQuad.render(shaderKawaseUp, GL20.GL_TRIANGLES)
} }
} }