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Virtual addressing #3

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298dfc9
Virtual Memory lookup for voxels
wongwill86 Mar 8, 2017
8308a8a
Adding cache miss output!
wongwill86 Mar 9, 2017
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36 changes: 32 additions & 4 deletions src/babylon/components/Scene.tsx
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Original file line number Diff line number Diff line change
@@ -1,6 +1,9 @@
import React from 'react';
import BABYLON from 'babylonjs';
import DatasetParser from '../tools/data/DatasetParser';
import R16TextureParser from '../tools/data/R16TextureParser';
import RGBA8x512TextureParser from '../tools/data/RGBA8x512TextureParser';
import RGBA8x4TextureParser from '../tools/data/RGBA8x4TextureParser';
import fragmentShader from '../shaders/dvr.fragment.glsl';
import vertexShader from '../shaders/dvr.vertex.glsl';
import composeFragmentShader from '../shaders/compose.fragment.glsl';
Expand Down Expand Up @@ -29,8 +32,8 @@ export default class Scene extends React.Component<SceneProps, SceneState> {
public gl: WebGL2RenderingContext;

private dataset = {
dimensions: new BABYLON.Vector3(256, 256, 256),
resolution: new BABYLON.Vector3(16.5, 16.5, 23.0),
dimensions: new BABYLON.Vector3(4096, 4096, 4096),
resolution: new BABYLON.Vector3(6, 6, 30.0),
};

public updateCamera(): void {
Expand Down Expand Up @@ -107,6 +110,15 @@ export default class Scene extends React.Component<SceneProps, SceneState> {
frontplane.material = frontplaneMaterial;

// Textures + Framebuffers
const voxelCache = new BABYLON.Texture('datasets/Volume-cubey.512x512x512.uint16.raw', this.scene,
true, false, BABYLON.Texture.NEAREST_SAMPLINGMODE, undefined, undefined, undefined, false, undefined,
R16TextureParser);
const pageTable = new BABYLON.Texture('datasets/Volume-cubey.512x512x512.uint16.pagetable.16x32blk.raw',
this.scene, true, false, BABYLON.Texture.NEAREST_SAMPLINGMODE, undefined, undefined, undefined, false, undefined,
RGBA8x512TextureParser);
const pageDirectory = new BABYLON.Texture('datasets/Volume-cubey.512x512x512.uint16.pagedirectory.4x1.raw',
this.scene, true, false, BABYLON.Texture.NEAREST_SAMPLINGMODE, undefined, undefined, undefined, false, undefined,
RGBA8x4TextureParser);
const cubeTex = new BABYLON.Texture('datasets/e2198.raw', this.scene, true, false,
BABYLON.Texture.NEAREST_SAMPLINGMODE, undefined, undefined, undefined, false, undefined, DatasetParser);

Expand All @@ -121,6 +133,10 @@ export default class Scene extends React.Component<SceneProps, SceneState> {
this.gl.activeTexture(this.gl.TEXTURE2);
const depthTex = this.createScreenTexture('segDepthTex', this.gl.RGBA32F, this.gl.RGBA, this.gl.FLOAT);

this.gl.activeTexture(this.gl.TEXTURE3);
const cacheStateTex = this.createScreenTexture(
'cacheStateTex', this.gl.RGBA32UI, this.gl.RGBA_INTEGER, this.gl.UNSIGNED_INT);

this.gl.activeTexture(this.gl.TEXTURE0);

const fb = segColorTex._texture._framebuffer;
Expand All @@ -130,8 +146,11 @@ export default class Scene extends React.Component<SceneProps, SceneState> {
segIDTex._texture, 0);
this.gl.framebufferTexture2D(this.gl.FRAMEBUFFER, this.gl.COLOR_ATTACHMENT2, this.gl.TEXTURE_2D,
depthTex._texture, 0);
this.gl.framebufferTexture2D(this.gl.FRAMEBUFFER, this.gl.COLOR_ATTACHMENT3, this.gl.TEXTURE_2D,
cacheStateTex._texture, 0);

this.gl.drawBuffers([this.gl.COLOR_ATTACHMENT0, this.gl.COLOR_ATTACHMENT1, this.gl.COLOR_ATTACHMENT2]);
this.gl.drawBuffers([
this.gl.COLOR_ATTACHMENT0, this.gl.COLOR_ATTACHMENT1, this.gl.COLOR_ATTACHMENT2, this.gl.COLOR_ATTACHMENT3]);

if (this.gl.checkFramebufferStatus(this.gl.FRAMEBUFFER) !== this.gl.FRAMEBUFFER_COMPLETE) {
console.error('Framebuffer creation failed!');
Expand All @@ -143,6 +162,7 @@ export default class Scene extends React.Component<SceneProps, SceneState> {
this.gl.clearBufferfv(this.gl.COLOR, 0, [0.2, 0.2, 0.3, 1.0]); // segColorTex (Segment Color)
this.gl.clearBufferuiv(this.gl.COLOR, 1, [0, 0, 0, 0]); // segIDTex (Segment ID)
this.gl.clearBufferfv(this.gl.COLOR, 2, [0.0, 0.0, 0.0, 0.0]); // depthTex (Segment Depth)
this.gl.clearBufferuiv(this.gl.COLOR, 3, [0, 0, 0, 0]); // cacheStateTex (miss/empty)
};

this.scene.customRenderTargets.push(segColorTex);
Expand All @@ -152,17 +172,24 @@ export default class Scene extends React.Component<SceneProps, SceneState> {
frontplaneMaterial.setVector3('distortionCorrection', distort);
frontplaneMaterial.setFloat('fovy', this.camera.fov);
frontplaneMaterial.setTexture('cubeTex', cubeTex);
frontplaneMaterial.setTexture('voxelCache', voxelCache);
frontplaneMaterial.setTexture('pageTable', pageTable);
frontplaneMaterial.setTexture('pageDirectory', pageDirectory);

// Post Processes
shaderStore.composePixelShader = composeFragmentShader.trim();
const postProcess = new BABYLON.PostProcess('compose', 'compose', [], ['segColorTex', 'segIDTex', 'segDepthTex'],
const postProcess = new BABYLON.PostProcess('compose', 'compose', [],
['segColorTex', 'segIDTex', 'segDepthTex', 'cacheStateTex'],
1.0, this.camera, BABYLON.Texture.NEAREST_SAMPLINGMODE, this.engine, true);

postProcess.onApply = (effect) => {
effect.setTexture('segColorTex', segColorTex);
effect.setTexture('segIDTex', segIDTex);
effect.setTexture('segDepthTex', depthTex);
effect.setTexture('cacheStateTex', cacheStateTex);
};


}

public componentWillUnmount() {
Expand All @@ -172,6 +199,7 @@ export default class Scene extends React.Component<SceneProps, SceneState> {
this.engine.scenes[0].dispose();
}
}
this.engine.wipeCaches();
this.engine.dispose();
}

Expand Down
9 changes: 7 additions & 2 deletions src/babylon/shaders/compose.fragment.glsl
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Original file line number Diff line number Diff line change
Expand Up @@ -7,15 +7,20 @@ in vec2 vUV;
uniform sampler2D segColorTex;
uniform usampler2D segIDTex;
uniform sampler2D segDepthTex;
uniform usampler2D cacheStateTex;

//out vec4 glFragColor;

void main(void) {

glFragColor.rgb = vec3(texture(segColorTex, vUV).rgb);
//glFragColor.rgb = vec3(texture(segIDTex, vUV).r);
//glFragColor.rgb = vec3(texture(segDepthTex, vUV).r) / 10.0;
glFragColor.rgb = vec3(texture(segDepthTex, vUV).r) / 10.0;
glFragColor.rgb = vec3(texture(cacheStateTex, vUV).rgb) ;
/*
*glFragColor.rgb = vec3(texture(segDepthTex, vUV).r) / 10.0;
*glFragColor.rgb = vec3(texture(segIDTex, vUV).r) / 65336.0;
*/

glFragColor.a = 1.0;

}
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