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[orx-fx] add pregain parameter to MipBloom

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This commit is contained in:
Edwin Jakobs
2021-10-03 13:36:09 +02:00
parent d84be87d27
commit 8acf6eb572
2 changed files with 9 additions and 1 deletions
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7
orx-fx/src/commonMain/kotlin/blur/MipBloom.kt
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@@ -31,11 +31,13 @@ class BloomUpscale : Filter(mppFilterShader(fx_bloom_upscale, "bloom-upscale"))
class BloomCombine : Filter(mppFilterShader(fx_bloom_combine, "bloom-combine")) {
var gain: Double by parameters
var pregain: Double by parameters
var bias: ColorRGBa by parameters
init {
bias = ColorRGBa.BLACK
gain = 1.0
pregain = 1.0
}
}
@@ -49,6 +51,10 @@ open class MipBloom<T : Filter>(val blur: T) : Filter(mppFilterShader(fx_bloom_c
@DoubleParameter("gain", 0.0, 4.0)
var gain: Double = 1.0
@DoubleParameter("pregain", 0.0, 4.0)
var pregain: Double = 1.0
/**
* noise gain. low noise gains will result in visible banding of the image. default value is 0.25
*/
@@ -113,6 +119,7 @@ open class MipBloom<T : Filter>(val blur: T) : Filter(mppFilterShader(fx_bloom_c
upscale.apply(intermediates.toTypedArray(), arrayOf(target[0]))
combine.gain = gain
combine.pregain = pregain
combine.apply(arrayOf(sourceCopy!!, target[0]), target)
if (sRGB) {

3
orx-fx/src/shaders/glsl/blur/bloom-combine.frag
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@@ -5,9 +5,10 @@ uniform sampler2D tex0;
uniform sampler2D tex1;
uniform float gain;
uniform float pregain;
uniform vec4 bias;
void main() {
o_output = texture(tex0, v_texCoord0) + texture(tex1, v_texCoord0)*gain;
o_output = texture(tex0, v_texCoord0) * pregain + texture(tex1, v_texCoord0)*gain;
o_output.a = clamp(o_output.a, 0.0, 1.0);
}