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116
src/main/java/net/coderbot/iris/uisupport/GaussianBlurRenderer.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| package net.coderbot.iris.uisupport; | ||
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||
| import com.google.common.collect.ImmutableSet; | ||
| import com.mojang.blaze3d.platform.GlStateManager; | ||
| import net.coderbot.iris.gl.IrisRenderSystem; | ||
| import net.coderbot.iris.gl.framebuffer.GlFramebuffer; | ||
| import net.coderbot.iris.gl.program.Program; | ||
| import net.coderbot.iris.gl.program.ProgramBuilder; | ||
| import net.coderbot.iris.gl.sampler.GlSampler; | ||
| import net.coderbot.iris.gl.uniform.UniformUpdateFrequency; | ||
| import net.coderbot.iris.postprocess.FullScreenQuadRenderer; | ||
| import net.coderbot.iris.shaderpack.StringPair; | ||
| import net.coderbot.iris.shaderpack.preprocessor.JcppProcessor; | ||
| import net.coderbot.iris.vendored.joml.Matrix4f; | ||
| import org.apache.commons.io.IOUtils; | ||
| import org.lwjgl.opengl.GL11C; | ||
| import org.lwjgl.opengl.GL20C; | ||
| import org.lwjgl.opengl.GL30C; | ||
| import org.lwjgl.opengl.GL43C; | ||
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|
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| import java.io.IOException; | ||
| import java.nio.charset.StandardCharsets; | ||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
| import java.util.Objects; | ||
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| public class GaussianBlurRenderer { | ||
| private int width; | ||
| private int height; | ||
| private Program program; | ||
| private GlFramebuffer firstFB; | ||
| private GlFramebuffer secondFB; | ||
| private int swapTexture; | ||
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| private int target; | ||
| private int directionLocation; | ||
| private int sizeLocation; | ||
| private static GlSampler sampler; | ||
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| static { | ||
| sampler = new GlSampler(true, false, false, false, false); | ||
| } | ||
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| public GaussianBlurRenderer(int width, int height) { | ||
| rebuildProgram(width, height); | ||
| } | ||
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| public void rebuildProgram(int width, int height) { | ||
| if (program != null) { | ||
| program.destroy(); | ||
| program = null; | ||
| firstFB.destroy(); | ||
| firstFB = null; | ||
| secondFB.destroy(); | ||
| secondFB = null; | ||
| GlStateManager._deleteTexture(swapTexture); | ||
| swapTexture = 0; | ||
| } | ||
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| this.width = width; | ||
| this.height = height; | ||
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| String vertexSource; | ||
| String source; | ||
| try { | ||
| vertexSource = new String(IOUtils.toByteArray(Objects.requireNonNull(getClass().getResourceAsStream("/defaultComposite.vsh"))), StandardCharsets.UTF_8); | ||
| source = new String(IOUtils.toByteArray(Objects.requireNonNull(getClass().getResourceAsStream("/gaussianBlur.fsh"))), StandardCharsets.UTF_8); | ||
| } catch (IOException e) { | ||
| throw new RuntimeException(e); | ||
| } | ||
|
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| List<StringPair> defineList = new ArrayList<>(); | ||
| source = JcppProcessor.glslPreprocessSource(source, defineList); | ||
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| ProgramBuilder builder = ProgramBuilder.begin("gaussianBlur", vertexSource, null, source, ImmutableSet.of(0)); | ||
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| builder.uniformJomlMatrix(UniformUpdateFrequency.ONCE, "projection", () -> new Matrix4f(2, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, -1, -1, 0, 1)); | ||
| builder.addExternalSampler(0, "readImage"); | ||
|
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| swapTexture = GlStateManager._genTexture(); | ||
| IrisRenderSystem.texImage2D(swapTexture, GL30C.GL_TEXTURE_2D, 0, GL30C.GL_RGBA8, width, height, 0, GL30C.GL_RGBA, GL30C.GL_UNSIGNED_BYTE, null); | ||
| IrisRenderSystem.texParameteri(swapTexture, GL20C.GL_TEXTURE_2D, GL20C.GL_TEXTURE_MIN_FILTER, GL20C.GL_LINEAR); | ||
| IrisRenderSystem.texParameteri(swapTexture, GL20C.GL_TEXTURE_2D, GL20C.GL_TEXTURE_MAG_FILTER, GL20C.GL_LINEAR); | ||
|
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| this.firstFB = new GlFramebuffer(); | ||
| firstFB.addColorAttachment(0, swapTexture); | ||
| this.secondFB = new GlFramebuffer(); | ||
| secondFB.addColorAttachment(0, target); | ||
| this.program = builder.build(); | ||
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| this.directionLocation = GlStateManager._glGetUniformLocation(this.program.getProgramId(), "direction"); | ||
| this.sizeLocation = GlStateManager._glGetUniformLocation(this.program.getProgramId(), "texSize"); | ||
| program.use(); | ||
| IrisRenderSystem.uniform2f(sizeLocation, width, height); | ||
| } | ||
|
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| public void process(int targetImage) { | ||
| if (this.target != targetImage) { | ||
| secondFB.addColorAttachment(0, targetImage); | ||
| this.target = targetImage; | ||
| } | ||
| IrisRenderSystem.bindSamplerToUnit(0, sampler.getId()); | ||
| IrisRenderSystem.bindTextureToUnit(GL43C.GL_TEXTURE_2D, 0, targetImage); | ||
| program.use(); | ||
| firstFB.bind(); | ||
| IrisRenderSystem.uniform2f(directionLocation, 1.0f, 0.0f); | ||
| FullScreenQuadRenderer.INSTANCE.render(); | ||
| IrisRenderSystem.bindTextureToUnit(GL43C.GL_TEXTURE_2D, 0, swapTexture); | ||
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| secondFB.bind(); | ||
| IrisRenderSystem.uniform2f(directionLocation, 0.0f, 1.0f); | ||
| FullScreenQuadRenderer.INSTANCE.render(); | ||
| Program.unbind(); | ||
| IrisRenderSystem.bindSamplerToUnit(0, 0); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| #version 330 core | ||
|
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| const int SAMPLE_COUNT = 10; | ||
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| const float OFFSETS[10] = float[10]( | ||
| -8.456814493133681, | ||
| -6.466941272204228, | ||
| -4.477095577950016, | ||
| -2.4872697699036146, | ||
| -0.4974522695575193, | ||
| 1.4923608703786542, | ||
| 3.4821807463742394, | ||
| 5.472015437203308, | ||
| 7.461873982996055, | ||
| 9 | ||
| ); | ||
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| const float WEIGHTS[10] = float[10]( | ||
| 0.06618541985300355, | ||
| 0.08970336395182268, | ||
| 0.11210975911041324, | ||
| 0.12920061912152314, | ||
| 0.13730098788873435, | ||
| 0.13454575120851442, | ||
| 0.12157824474454274, | ||
| 0.10130423138377932, | ||
| 0.07783716371467683, | ||
| 0.03023445902298974 | ||
| ); | ||
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| uniform vec2 texSize; | ||
|
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| // blurDirection is: | ||
| // vec2(1,0) for horizontal pass | ||
| // vec2(0,1) for vertical pass | ||
| // The sourceTexture to be blurred MUST use linear filtering! | ||
| // pixelCoord is in [0..1] | ||
| vec4 blur(in sampler2D sourceTexture, vec2 blurDirection, vec2 pixelCoord) | ||
| { | ||
| vec4 result = vec4(0.0); | ||
| for (int i = 0; i < SAMPLE_COUNT; ++i) | ||
| { | ||
| vec2 offset = blurDirection * OFFSETS[i] / texSize; | ||
| float weight = WEIGHTS[i]; | ||
| result += texture(sourceTexture, pixelCoord + offset) * weight; | ||
| } | ||
| return result; | ||
| } | ||
| uniform sampler2D readImage; | ||
| uniform vec2 direction; | ||
|
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| layout (location = 0) out vec4 color; | ||
|
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| void main() { | ||
| vec2 size = gl_FragCoord.xy / texSize; | ||
| /*if (size.x > 0.5) { | ||
| color = texture(readImage, gl_FragCoord.xy / texSize); | ||
| return; | ||
| }*/ | ||
|
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| float distance = (size.y > 0.5 ? -distance(1.0, size.y) : -distance(0, size.y)) * 3; | ||
| color = blur(readImage, direction, gl_FragCoord.xy / texSize) * mix(vec4(0.6, 0.6, 0.6, 1.0), vec4(0.45, 0.45, 0.45, 1.0), distance); | ||
| } |