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201x 1x 1x 208x 261x 205x 261x 208x 208x 208x 208x 720x 624x 311x 311x 311x 311x 720x 720x 720x 404x 720x 208x 208x 878x 439x 439x 439x 439x 439x 439x 439x 469x 208x 439x 205x 205x 205x 205x 205x 205x 205x 205x 205x 205x 205x 205x 205x 205x 208x 208x 509x 202x 202x 202x 509x 408x 408x 205x 205x 408x 208x 208x 139x 7x 7x 139x 208x 37156x 37156x 208x 53x 53x 53x 208x 261x 261x 261x 261x 261x 261x 261x 261x 261x 261x 208x 208x 208x 1526x 1526x 8x 8x 1518x 1518x 1518x 1518x 208x 1518x 1518x 1518x 1518x 208x 732x 732x 732x 208x 443x 443x 379x 13x 51x 208x 419x 419x 379x 160x 70x 149x 3x 3x 10x 9x 1x 27x 26x 1x 208x 208x 195x 195x 195x 195x 195x 195x 195x 195x 195x 205x 205x 1365x 195x 195x 195x 208x 195x 195x 195x 195x 195x 195x 195x 195x 195x 195x 195x 195x 208x 19x 17x 2x 2x 2x 2x 208x 358x 304x 54x 54x 54x 54x 54x 54x 54x 54x 54x 2538x 2538x 2538x 54x 54x 208x 439x 439x 439x 439x 439x 195x 439x 439x 208x 439x 439x 439x 208x 205x 205x 208x 3757x 208x 208x 202x 202x 208x 7x 7x 7x 202x 202x 208x 202x 201x 202x 202x 208x 94x 208x 208x 104x 104x 104x 104x 208x 120x 120x 120x 208x 302x 302x 182x 120x 120x 120x 120x 208x 254x 208x 120x 120x 120x 120x 208x 208x 208x 208x 5824x 55607x 55607x 1x 208x 208x 208x 208x 208x 208x 208x 208x 208x 208x 208x 208x 208x 208x 208x 208x 208x 208x 208x 208x 208x 208x 208x 208x 208x 208x 208x 208x 1x 1x 1x | import { VtkDataTypes } from 'vtk.js/Sources/Common/Core/DataArray/Constants';
import macro from 'vtk.js/Sources/macros';
import { registerViewConstructor } from 'vtk.js/Sources/Rendering/Core/RenderWindow';
import vtkForwardPass from 'vtk.js/Sources/Rendering/OpenGL/ForwardPass';
import vtkOpenGLHardwareSelector from 'vtk.js/Sources/Rendering/OpenGL/HardwareSelector';
import vtkShaderCache from 'vtk.js/Sources/Rendering/OpenGL/ShaderCache';
import vtkOpenGLTextureUnitManager from 'vtk.js/Sources/Rendering/OpenGL/TextureUnitManager';
import vtkOpenGLViewNodeFactory, {
registerOverride,
} from 'vtk.js/Sources/Rendering/OpenGL/ViewNodeFactory';
import vtkRenderPass from 'vtk.js/Sources/Rendering/SceneGraph/RenderPass';
import vtkRenderWindowViewNode from 'vtk.js/Sources/Rendering/SceneGraph/RenderWindowViewNode';
import { createContextProxyHandler } from 'vtk.js/Sources/Rendering/OpenGL/RenderWindow/ContextProxy';
const { vtkDebugMacro, vtkErrorMacro } = macro;
const SCREENSHOT_PLACEHOLDER = {
position: 'absolute',
top: 0,
left: 0,
width: '100%',
height: '100%',
};
const parentMethodsToProxy = [
'activateTexture',
'deactivateTexture',
'disableCullFace',
'enableCullFace',
'get3DContext',
'getActiveFramebuffer',
'getContext',
'getDefaultTextureByteSize',
'getDefaultTextureInternalFormat',
'getDefaultToWebgl2',
'getGLInformations',
'getGraphicsMemoryInfo',
'getGraphicsResourceForObject',
'getHardwareMaximumLineWidth',
'getPixelData',
'getShaderCache',
'getTextureUnitForTexture',
'getTextureUnitManager',
'getWebgl2',
'makeCurrent',
'releaseGraphicsResources',
'registerGraphicsResourceUser',
'unregisterGraphicsResourceUser',
'restoreContext',
'setActiveFramebuffer',
'setContext',
'setDefaultToWebgl2',
'setGraphicsResourceForObject',
];
function checkRenderTargetSupport(gl, format, type) {
// create temporary frame buffer and texture
const framebuffer = gl.createFramebuffer();
const texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texImage2D(gl.TEXTURE_2D, 0, format, 2, 2, 0, format, type, null);
gl.bindFramebuffer(gl.FRAMEBUFFER, framebuffer);
gl.framebufferTexture2D(
gl.FRAMEBUFFER,
gl.COLOR_ATTACHMENT0,
gl.TEXTURE_2D,
texture,
0
);
// check frame buffer status
const status = gl.checkFramebufferStatus(gl.FRAMEBUFFER);
// clean up
gl.bindFramebuffer(gl.FRAMEBUFFER, null);
gl.bindTexture(gl.TEXTURE_2D, null);
return status === gl.FRAMEBUFFER_COMPLETE;
}
// ----------------------------------------------------------------------------
// Monitor the usage of GL context across vtkOpenGLRenderWindow instances
// ----------------------------------------------------------------------------
let GL_CONTEXT_COUNT = 0;
const GL_CONTEXT_LISTENERS = [];
function createGLContext() {
GL_CONTEXT_COUNT++;
GL_CONTEXT_LISTENERS.forEach((cb) => cb(GL_CONTEXT_COUNT));
}
function deleteGLContext() {
GL_CONTEXT_COUNT--;
GL_CONTEXT_LISTENERS.forEach((cb) => cb(GL_CONTEXT_COUNT));
}
export function pushMonitorGLContextCount(cb) {
GL_CONTEXT_LISTENERS.push(cb);
}
export function popMonitorGLContextCount(cb) {
return GL_CONTEXT_LISTENERS.pop();
}
function _preventDefault(e) {
e.preventDefault();
}
// ----------------------------------------------------------------------------
// vtkOpenGLRenderWindow methods
// ----------------------------------------------------------------------------
function vtkOpenGLRenderWindow(publicAPI, model) {
// Set our className
model.classHierarchy.push('vtkOpenGLRenderWindow');
// Only create a cachingContextHandler if needed
let cachingContextHandler;
function getCachingContextHandler() {
if (!cachingContextHandler) {
cachingContextHandler = createContextProxyHandler();
}
return cachingContextHandler;
}
publicAPI.getViewNodeFactory = () => model.myFactory;
// prevent default context lost handler
model.canvas.addEventListener('webglcontextlost', _preventDefault, false);
model.canvas.addEventListener(
'webglcontextrestored',
publicAPI.restoreContext,
false
);
// Auto update style
const previousSize = [0, 0];
function updateWindow() {
// Canvas size
if (model.renderable) {
if (
model.size[0] !== previousSize[0] ||
model.size[1] !== previousSize[1]
) {
previousSize[0] = model.size[0];
previousSize[1] = model.size[1];
model.canvas.setAttribute('width', model.size[0]);
model.canvas.setAttribute('height', model.size[1]);
}
}
// ImageStream size
Iif (model.viewStream) {
// If same size that's a NoOp
model.viewStream.setSize(model.size[0], model.size[1]);
}
// Offscreen ?
model.canvas.style.display = model.useOffScreen ? 'none' : 'block';
// Cursor type
if (model.el) {
model.el.style.cursor = model.cursorVisibility ? model.cursor : 'none';
}
// Invalidate cached DOM container size
model.containerSize = null;
}
publicAPI.onModified(updateWindow);
// Builds myself.
publicAPI.buildPass = (prepass) => {
if (prepass) {
Iif (!model.renderable) {
return;
}
publicAPI.prepareNodes();
publicAPI.addMissingNodes(model.renderable.getRenderersByReference());
publicAPI.addMissingNodes(
model.renderable.getChildRenderWindowsByReference()
);
publicAPI.removeUnusedNodes();
publicAPI.initialize();
model.children.forEach((child) => {
// Children can be openGl renderer or openGl render windows
// Only openGl renderers have a method setOpenGLRenderWindow
child.setOpenGLRenderWindow?.(publicAPI);
});
}
};
publicAPI.initialize = () => {
if (!model.initialized) {
// Set root parent if there is one
// Some methods of the root parent are proxied (see parentMethodsToProxy)
model.rootOpenGLRenderWindow = publicAPI.getLastAncestorOfType(
'vtkOpenGLRenderWindow'
);
Iif (model.rootOpenGLRenderWindow) {
// Initialize a 2D context that will copy the content of the root parent
model.context2D = publicAPI.get2DContext();
} else {
// Initialize a 3D context that may be used by child render windows
model.context = publicAPI.get3DContext();
publicAPI.resizeFromChildRenderWindows();
if (model.context) {
createGLContext();
}
model.textureUnitManager = vtkOpenGLTextureUnitManager.newInstance();
model.textureUnitManager.setContext(model.context);
model.shaderCache.setContext(model.context);
// initialize blending for transparency
const gl = model.context;
gl.blendFuncSeparate(
gl.SRC_ALPHA,
gl.ONE_MINUS_SRC_ALPHA,
gl.ONE,
gl.ONE_MINUS_SRC_ALPHA
);
gl.depthFunc(gl.LEQUAL);
gl.enable(gl.BLEND);
}
model.initialized = true;
}
};
publicAPI.makeCurrent = () => {
model.context.makeCurrent();
};
publicAPI.setContainer = (el) => {
if (model.el && model.el !== el) {
Iif (model.canvas.parentNode !== model.el) {
vtkErrorMacro('Error: canvas parent node does not match container');
}
// Remove canvas from previous container
model.el.removeChild(model.canvas);
// If the renderer has previously added
// a background image, remove it from the DOM.
Iif (model.el.contains(model.bgImage)) {
model.el.removeChild(model.bgImage);
}
}
if (model.el !== el) {
model.el = el;
if (model.el) {
model.el.appendChild(model.canvas);
// If the renderer is set to use a background
// image, attach it to the DOM.
Iif (model.useBackgroundImage) {
model.el.appendChild(model.bgImage);
}
}
// Trigger modified()
publicAPI.modified();
}
};
publicAPI.getContainer = () => model.el;
publicAPI.getContainerSize = () => {
if (!model.containerSize && model.el) {
const { width, height } = model.el.getBoundingClientRect();
model.containerSize = [width, height];
}
return model.containerSize || model.size;
};
publicAPI.getFramebufferSize = () => {
const fbSize = model.activeFramebuffer?.getSize();
return fbSize || model.size;
};
publicAPI.getPixelData = (x1, y1, x2, y2) => {
const pixels = new Uint8Array((x2 - x1 + 1) * (y2 - y1 + 1) * 4);
model.context.readPixels(
x1,
y1,
x2 - x1 + 1,
y2 - y1 + 1,
model.context.RGBA,
model.context.UNSIGNED_BYTE,
pixels
);
return pixels;
};
publicAPI.get3DContext = (
options = {
preserveDrawingBuffer: false,
depth: true,
alpha: true,
powerPreference: 'high-performance',
}
) => {
let result = null;
const webgl2Supported = typeof WebGL2RenderingContext !== 'undefined';
model.webgl2 = false;
if (model.defaultToWebgl2 && webgl2Supported) {
result = model.canvas.getContext('webgl2', options);
if (result) {
model.webgl2 = true;
vtkDebugMacro('using webgl2');
}
}
Iif (!result) {
vtkDebugMacro('using webgl1');
result =
model.canvas.getContext('webgl', options) ||
model.canvas.getContext('experimental-webgl', options);
}
return new Proxy(result, getCachingContextHandler());
};
publicAPI.get2DContext = (options = {}) =>
model.canvas.getContext('2d', options);
publicAPI.restoreContext = () => {
const rp = vtkRenderPass.newInstance();
rp.setCurrentOperation('Release');
rp.traverse(publicAPI, null);
};
publicAPI.activateTexture = (texture) => {
// Only add if it isn't already there
const result = model._textureResourceIds.get(texture);
if (result !== undefined) {
model.context.activeTexture(model.context.TEXTURE0 + result);
return;
}
const activeUnit = publicAPI.getTextureUnitManager().allocate();
Iif (activeUnit < 0) {
vtkErrorMacro(
'Hardware does not support the number of textures defined.'
);
return;
}
model._textureResourceIds.set(texture, activeUnit);
model.context.activeTexture(model.context.TEXTURE0 + activeUnit);
};
publicAPI.deactivateTexture = (texture) => {
// Only deactivate if it isn't already there
const result = model._textureResourceIds.get(texture);
if (result !== undefined) {
publicAPI.getTextureUnitManager().free(result);
model._textureResourceIds.delete(texture);
}
};
publicAPI.getTextureUnitForTexture = (texture) => {
const result = model._textureResourceIds.get(texture);
if (result !== undefined) {
return result;
}
return -1;
};
publicAPI.getDefaultTextureByteSize = (
vtkType,
oglNorm16Ext = null,
useHalfFloat = false
) => {
if (model.webgl2) {
switch (vtkType) {
case VtkDataTypes.CHAR:
case VtkDataTypes.SIGNED_CHAR:
case VtkDataTypes.UNSIGNED_CHAR:
return 1;
case oglNorm16Ext:
case useHalfFloat:
case VtkDataTypes.UNSIGNED_SHORT:
case VtkDataTypes.SHORT:
case VtkDataTypes.VOID: // Used for unsigned int depth
return 2;
default: // For all other cases, assume float
return 4;
}
}
// webgl1 type support is limited to 1 byte
return 1;
};
publicAPI.getDefaultTextureInternalFormat = (
vtktype,
numComps,
oglNorm16Ext = null,
useHalfFloat = false
) => {
if (model.webgl2) {
switch (vtktype) {
case VtkDataTypes.UNSIGNED_CHAR:
switch (numComps) {
case 1:
return model.context.R8;
case 2:
return model.context.RG8;
case 3:
return model.context.RGB8;
case 4:
default:
return model.context.RGBA8;
}
case oglNorm16Ext && !useHalfFloat && VtkDataTypes.UNSIGNED_SHORT:
switch (numComps) {
case 1:
return oglNorm16Ext.R16_EXT;
case 2:
return oglNorm16Ext.RG16_EXT;
case 3:
return oglNorm16Ext.RGB16_EXT;
case 4:
default:
return oglNorm16Ext.RGBA16_EXT;
}
// prioritize norm16 over float
case oglNorm16Ext && !useHalfFloat && VtkDataTypes.SHORT:
switch (numComps) {
case 1:
return oglNorm16Ext.R16_SNORM_EXT;
case 2:
return oglNorm16Ext.RG16_SNORM_EXT;
case 3:
return oglNorm16Ext.RGB16_SNORM_EXT;
case 4:
default:
return oglNorm16Ext.RGBA16_SNORM_EXT;
}
case VtkDataTypes.UNSIGNED_SHORT:
case VtkDataTypes.SHORT:
case VtkDataTypes.FLOAT:
default:
// useHalfFloat tells us if the texture can be accurately
// rendered with 16 bits or not.
switch (numComps) {
case 1:
return useHalfFloat ? model.context.R16F : model.context.R32F;
case 2:
return useHalfFloat ? model.context.RG16F : model.context.RG32F;
case 3:
return useHalfFloat ? model.context.RGB16F : model.context.RGB32F;
case 4:
default:
return useHalfFloat
? model.context.RGBA16F
: model.context.RGBA32F;
}
}
}
// webgl1 only supports four types
switch (numComps) {
case 1:
return model.context.LUMINANCE;
case 2:
return model.context.LUMINANCE_ALPHA;
case 3:
return model.context.RGB;
case 4:
default:
return model.context.RGBA;
}
};
publicAPI.setBackgroundImage = (img) => {
model.bgImage.src = img.src;
};
publicAPI.setUseBackgroundImage = (value) => {
model.useBackgroundImage = value;
// Add or remove the background image from the
// DOM as specified.
if (model.useBackgroundImage && !model.el.contains(model.bgImage)) {
model.el.appendChild(model.bgImage);
} else if (!model.useBackgroundImage && model.el.contains(model.bgImage)) {
model.el.removeChild(model.bgImage);
}
};
function getCanvasDataURL(format = model.imageFormat) {
// Copy current canvas to not modify the original
const temporaryCanvas = document.createElement('canvas');
const temporaryContext = temporaryCanvas.getContext('2d');
temporaryCanvas.width = model.canvas.width;
temporaryCanvas.height = model.canvas.height;
temporaryContext.drawImage(model.canvas, 0, 0);
// Get current client rect to place canvas
const mainBoundingClientRect = model.canvas.getBoundingClientRect();
const renderWindow = model.renderable;
const renderers = renderWindow.getRenderers();
renderers.forEach((renderer) => {
const viewProps = renderer.getViewProps();
viewProps.forEach((viewProp) => {
// Check if the prop has a container that should have canvas
Iif (viewProp.getContainer) {
const container = viewProp.getContainer();
const canvasList = container.getElementsByTagName('canvas');
// Go throughout all canvas and copy it into temporary main canvas
for (let i = 0; i < canvasList.length; i++) {
const currentCanvas = canvasList[i];
const boundingClientRect = currentCanvas.getBoundingClientRect();
const newXPosition =
boundingClientRect.x - mainBoundingClientRect.x;
const newYPosition =
boundingClientRect.y - mainBoundingClientRect.y;
temporaryContext.drawImage(
currentCanvas,
newXPosition,
newYPosition
);
}
}
});
});
const screenshot = temporaryCanvas.toDataURL(format);
temporaryCanvas.remove();
publicAPI.invokeImageReady(screenshot);
}
publicAPI.captureNextImage = (
format = 'image/png',
{ resetCamera = false, size = null, scale = 1 } = {}
) => {
Iif (model.deleted) {
return null;
}
model.imageFormat = format;
const previous = model.notifyStartCaptureImage;
model.notifyStartCaptureImage = true;
model._screenshot = {
size:
!!size || scale !== 1
? size || model.size.map((val) => val * scale)
: null,
};
return new Promise((resolve, reject) => {
const subscription = publicAPI.onImageReady((imageURL) => {
if (model._screenshot.size === null) {
model.notifyStartCaptureImage = previous;
subscription.unsubscribe();
Iif (model._screenshot.placeHolder) {
// resize the main canvas back to its original size and show it
model.size = model._screenshot.originalSize;
// process the resize
publicAPI.modified();
// restore the saved camera parameters, if applicable
if (model._screenshot.cameras) {
model._screenshot.cameras.forEach(({ restoreParamsFn, arg }) =>
restoreParamsFn(arg)
);
}
// Trigger a render at the original size
publicAPI.traverseAllPasses();
// Remove and clean up the placeholder, revealing the original
model.el.removeChild(model._screenshot.placeHolder);
model._screenshot.placeHolder.remove();
model._screenshot = null;
}
resolve(imageURL);
} else E{
// Create a placeholder image overlay while we resize and render
const tmpImg = document.createElement('img');
tmpImg.style = SCREENSHOT_PLACEHOLDER;
tmpImg.src = imageURL;
model._screenshot.placeHolder = model.el.appendChild(tmpImg);
// hide the main canvas
model.canvas.style.display = 'none';
// remember the main canvas original size, then resize it
model._screenshot.originalSize = model.size;
model.size = model._screenshot.size;
model.rootOpenGLRenderWindow?.resizeFromChildRenderWindows();
model._screenshot.size = null;
// process the resize
publicAPI.modified();
if (resetCamera) {
const isUserResetCamera = resetCamera !== true;
// If resetCamera was requested, we first save camera parameters
// from all the renderers, so we can restore them later
model._screenshot.cameras = model.renderable
.getRenderers()
.map((renderer) => {
const camera = renderer.getActiveCamera();
const params = camera.get(
'focalPoint',
'position',
'parallelScale'
);
return {
resetCameraArgs: isUserResetCamera ? { renderer } : undefined,
resetCameraFn: isUserResetCamera
? resetCamera
: renderer.resetCamera,
restoreParamsFn: camera.set,
// "clone" the params so we don't keep refs to properties
arg: JSON.parse(JSON.stringify(params)),
};
});
// Perform the resetCamera() on each renderer only after capturing
// the params from all active cameras, in case there happen to be
// linked cameras among the renderers.
model._screenshot.cameras.forEach(
({ resetCameraFn, resetCameraArgs }) =>
resetCameraFn(resetCameraArgs)
);
}
// Trigger a render at the custom size
publicAPI.traverseAllPasses();
}
});
});
};
let hardwareMaximumLineWidth;
publicAPI.getHardwareMaximumLineWidth = () => {
// We cache the result of this function because `getParameter` is slow
if (hardwareMaximumLineWidth != null) {
return hardwareMaximumLineWidth;
}
const gl = publicAPI.get3DContext();
const lineWidthRange = gl.getParameter(gl.ALIASED_LINE_WIDTH_RANGE);
hardwareMaximumLineWidth = lineWidthRange[1];
return lineWidthRange[1];
};
publicAPI.getGLInformations = () => {
if (model._glInformation) {
return model._glInformation;
}
const gl = publicAPI.get3DContext();
const glTextureFloat = gl.getExtension('OES_texture_float');
const glTextureHalfFloat = gl.getExtension('OES_texture_half_float');
const glDebugRendererInfo = gl.getExtension('WEBGL_debug_renderer_info');
const glDrawBuffers = gl.getExtension('WEBGL_draw_buffers');
const glAnisotropic =
gl.getExtension('EXT_texture_filter_anisotropic') ||
gl.getExtension('WEBKIT_EXT_texture_filter_anisotropic');
const params = [
[
'Max Vertex Attributes',
'MAX_VERTEX_ATTRIBS',
gl.getParameter(gl.MAX_VERTEX_ATTRIBS),
],
[
'Max Varying Vectors',
'MAX_VARYING_VECTORS',
gl.getParameter(gl.MAX_VARYING_VECTORS),
],
[
'Max Vertex Uniform Vectors',
'MAX_VERTEX_UNIFORM_VECTORS',
gl.getParameter(gl.MAX_VERTEX_UNIFORM_VECTORS),
],
[
'Max Fragment Uniform Vectors',
'MAX_FRAGMENT_UNIFORM_VECTORS',
gl.getParameter(gl.MAX_FRAGMENT_UNIFORM_VECTORS),
],
[
'Max Fragment Texture Image Units',
'MAX_TEXTURE_IMAGE_UNITS',
gl.getParameter(gl.MAX_TEXTURE_IMAGE_UNITS),
],
[
'Max Vertex Texture Image Units',
'MAX_VERTEX_TEXTURE_IMAGE_UNITS',
gl.getParameter(gl.MAX_VERTEX_TEXTURE_IMAGE_UNITS),
],
[
'Max Combined Texture Image Units',
'MAX_COMBINED_TEXTURE_IMAGE_UNITS',
gl.getParameter(gl.MAX_COMBINED_TEXTURE_IMAGE_UNITS),
],
[
'Max 2D Texture Size',
'MAX_TEXTURE_SIZE',
gl.getParameter(gl.MAX_TEXTURE_SIZE),
],
[
'Max Cube Texture Size',
'MAX_CUBE_MAP_TEXTURE_SIZE',
gl.getParameter(gl.MAX_CUBE_MAP_TEXTURE_SIZE),
],
[
'Max Texture Anisotropy',
'MAX_TEXTURE_MAX_ANISOTROPY_EXT',
glAnisotropic &&
gl.getParameter(glAnisotropic.MAX_TEXTURE_MAX_ANISOTROPY_EXT),
],
[
'Point Size Range',
'ALIASED_POINT_SIZE_RANGE',
gl.getParameter(gl.ALIASED_POINT_SIZE_RANGE).join(' - '),
],
[
'Line Width Range',
'ALIASED_LINE_WIDTH_RANGE',
gl.getParameter(gl.ALIASED_LINE_WIDTH_RANGE).join(' - '),
],
[
'Max Viewport Dimensions',
'MAX_VIEWPORT_DIMS',
gl.getParameter(gl.MAX_VIEWPORT_DIMS).join(' - '),
],
[
'Max Renderbuffer Size',
'MAX_RENDERBUFFER_SIZE',
gl.getParameter(gl.MAX_RENDERBUFFER_SIZE),
],
['Framebuffer Red Bits', 'RED_BITS', gl.getParameter(gl.RED_BITS)],
['Framebuffer Green Bits', 'GREEN_BITS', gl.getParameter(gl.GREEN_BITS)],
['Framebuffer Blue Bits', 'BLUE_BITS', gl.getParameter(gl.BLUE_BITS)],
['Framebuffer Alpha Bits', 'ALPHA_BITS', gl.getParameter(gl.ALPHA_BITS)],
['Framebuffer Depth Bits', 'DEPTH_BITS', gl.getParameter(gl.DEPTH_BITS)],
[
'Framebuffer Stencil Bits',
'STENCIL_BITS',
gl.getParameter(gl.STENCIL_BITS),
],
[
'Framebuffer Subpixel Bits',
'SUBPIXEL_BITS',
gl.getParameter(gl.SUBPIXEL_BITS),
],
['MSAA Samples', 'SAMPLES', gl.getParameter(gl.SAMPLES)],
[
'MSAA Sample Buffers',
'SAMPLE_BUFFERS',
gl.getParameter(gl.SAMPLE_BUFFERS),
],
[
'Supported Formats for UByte Render Targets ',
'UNSIGNED_BYTE RENDER TARGET FORMATS',
[
glTextureFloat &&
checkRenderTargetSupport(gl, gl.RGBA, gl.UNSIGNED_BYTE)
? 'RGBA'
: '',
glTextureFloat &&
checkRenderTargetSupport(gl, gl.RGB, gl.UNSIGNED_BYTE)
? 'RGB'
: '',
glTextureFloat &&
checkRenderTargetSupport(gl, gl.LUMINANCE, gl.UNSIGNED_BYTE)
? 'LUMINANCE'
: '',
glTextureFloat &&
checkRenderTargetSupport(gl, gl.ALPHA, gl.UNSIGNED_BYTE)
? 'ALPHA'
: '',
glTextureFloat &&
checkRenderTargetSupport(gl, gl.LUMINANCE_ALPHA, gl.UNSIGNED_BYTE)
? 'LUMINANCE_ALPHA'
: '',
].join(' '),
],
[
'Supported Formats for Half Float Render Targets',
'HALF FLOAT RENDER TARGET FORMATS',
[
glTextureHalfFloat &&
checkRenderTargetSupport(
gl,
gl.RGBA,
glTextureHalfFloat.HALF_FLOAT_OES
)
? 'RGBA'
: '',
glTextureHalfFloat &&
checkRenderTargetSupport(
gl,
gl.RGB,
glTextureHalfFloat.HALF_FLOAT_OES
)
? 'RGB'
: '',
glTextureHalfFloat &&
checkRenderTargetSupport(
gl,
gl.LUMINANCE,
glTextureHalfFloat.HALF_FLOAT_OES
)
? 'LUMINANCE'
: '',
glTextureHalfFloat &&
checkRenderTargetSupport(
gl,
gl.ALPHA,
glTextureHalfFloat.HALF_FLOAT_OES
)
? 'ALPHA'
: '',
glTextureHalfFloat &&
checkRenderTargetSupport(
gl,
gl.LUMINANCE_ALPHA,
glTextureHalfFloat.HALF_FLOAT_OES
)
? 'LUMINANCE_ALPHA'
: '',
].join(' '),
],
[
'Supported Formats for Full Float Render Targets',
'FLOAT RENDER TARGET FORMATS',
[
glTextureFloat && checkRenderTargetSupport(gl, gl.RGBA, gl.FLOAT)
? 'RGBA'
: '',
glTextureFloat && checkRenderTargetSupport(gl, gl.RGB, gl.FLOAT)
? 'RGB'
: '',
glTextureFloat && checkRenderTargetSupport(gl, gl.LUMINANCE, gl.FLOAT)
? 'LUMINANCE'
: '',
glTextureFloat && checkRenderTargetSupport(gl, gl.ALPHA, gl.FLOAT)
? 'ALPHA'
: '',
glTextureFloat &&
checkRenderTargetSupport(gl, gl.LUMINANCE_ALPHA, gl.FLOAT)
? 'LUMINANCE_ALPHA'
: '',
].join(' '),
],
[
'Max Multiple Render Targets Buffers',
'MAX_DRAW_BUFFERS_WEBGL',
glDrawBuffers
? gl.getParameter(glDrawBuffers.MAX_DRAW_BUFFERS_WEBGL)
: 0,
],
[
'High Float Precision in Vertex Shader',
'HIGH_FLOAT VERTEX_SHADER',
[
gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.HIGH_FLOAT)
.precision,
' (-2<sup>',
gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.HIGH_FLOAT).rangeMin,
'</sup> - 2<sup>',
gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.HIGH_FLOAT).rangeMax,
'</sup>)',
].join(''),
],
[
'Medium Float Precision in Vertex Shader',
'MEDIUM_FLOAT VERTEX_SHADER',
[
gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.MEDIUM_FLOAT)
.precision,
' (-2<sup>',
gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.MEDIUM_FLOAT)
.rangeMin,
'</sup> - 2<sup>',
gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.MEDIUM_FLOAT)
.rangeMax,
'</sup>)',
].join(''),
],
[
'Low Float Precision in Vertex Shader',
'LOW_FLOAT VERTEX_SHADER',
[
gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.LOW_FLOAT).precision,
' (-2<sup>',
gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.LOW_FLOAT).rangeMin,
'</sup> - 2<sup>',
gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.LOW_FLOAT).rangeMax,
'</sup>)',
].join(''),
],
[
'High Float Precision in Fragment Shader',
'HIGH_FLOAT FRAGMENT_SHADER',
[
gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.HIGH_FLOAT)
.precision,
' (-2<sup>',
gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.HIGH_FLOAT)
.rangeMin,
'</sup> - 2<sup>',
gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.HIGH_FLOAT)
.rangeMax,
'</sup>)',
].join(''),
],
[
'Medium Float Precision in Fragment Shader',
'MEDIUM_FLOAT FRAGMENT_SHADER',
[
gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.MEDIUM_FLOAT)
.precision,
' (-2<sup>',
gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.MEDIUM_FLOAT)
.rangeMin,
'</sup> - 2<sup>',
gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.MEDIUM_FLOAT)
.rangeMax,
'</sup>)',
].join(''),
],
[
'Low Float Precision in Fragment Shader',
'LOW_FLOAT FRAGMENT_SHADER',
[
gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.LOW_FLOAT)
.precision,
' (-2<sup>',
gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.LOW_FLOAT)
.rangeMin,
'</sup> - 2<sup>',
gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.LOW_FLOAT)
.rangeMax,
'</sup>)',
].join(''),
],
[
'High Int Precision in Vertex Shader',
'HIGH_INT VERTEX_SHADER',
[
gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.HIGH_INT).precision,
' (-2<sup>',
gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.HIGH_INT).rangeMin,
'</sup> - 2<sup>',
gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.HIGH_INT).rangeMax,
'</sup>)',
].join(''),
],
[
'Medium Int Precision in Vertex Shader',
'MEDIUM_INT VERTEX_SHADER',
[
gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.MEDIUM_INT)
.precision,
' (-2<sup>',
gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.MEDIUM_INT).rangeMin,
'</sup> - 2<sup>',
gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.MEDIUM_INT).rangeMax,
'</sup>)',
].join(''),
],
[
'Low Int Precision in Vertex Shader',
'LOW_INT VERTEX_SHADER',
[
gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.LOW_INT).precision,
' (-2<sup>',
gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.LOW_INT).rangeMin,
'</sup> - 2<sup>',
gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.LOW_INT).rangeMax,
'</sup>)',
].join(''),
],
[
'High Int Precision in Fragment Shader',
'HIGH_INT FRAGMENT_SHADER',
[
gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.HIGH_INT)
.precision,
' (-2<sup>',
gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.HIGH_INT).rangeMin,
'</sup> - 2<sup>',
gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.HIGH_INT).rangeMax,
'</sup>)',
].join(''),
],
[
'Medium Int Precision in Fragment Shader',
'MEDIUM_INT FRAGMENT_SHADER',
[
gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.MEDIUM_INT)
.precision,
' (-2<sup>',
gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.MEDIUM_INT)
.rangeMin,
'</sup> - 2<sup>',
gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.MEDIUM_INT)
.rangeMax,
'</sup>)',
].join(''),
],
[
'Low Int Precision in Fragment Shader',
'LOW_INT FRAGMENT_SHADER',
[
gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.LOW_INT).precision,
' (-2<sup>',
gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.LOW_INT).rangeMin,
'</sup> - 2<sup>',
gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.LOW_INT).rangeMax,
'</sup>)',
].join(''),
],
[
'Supported Extensions',
'EXTENSIONS',
gl.getSupportedExtensions().join('<br/>\t\t\t\t\t '),
],
['WebGL Renderer', 'RENDERER', gl.getParameter(gl.RENDERER)],
['WebGL Vendor', 'VENDOR', gl.getParameter(gl.VENDOR)],
['WebGL Version', 'VERSION', gl.getParameter(gl.VERSION)],
[
'Shading Language Version',
'SHADING_LANGUAGE_VERSION',
gl.getParameter(gl.SHADING_LANGUAGE_VERSION),
],
[
'Unmasked Renderer',
'UNMASKED_RENDERER',
glDebugRendererInfo &&
gl.getParameter(glDebugRendererInfo.UNMASKED_RENDERER_WEBGL),
],
[
'Unmasked Vendor',
'UNMASKED_VENDOR',
glDebugRendererInfo &&
gl.getParameter(glDebugRendererInfo.UNMASKED_VENDOR_WEBGL),
],
['WebGL Version', 'WEBGL_VERSION', model.webgl2 ? 2 : 1],
];
const result = {};
while (params.length) {
const [label, key, value] = params.pop();
if (key) {
result[key] = { label, value };
}
}
model._glInformation = result;
return result;
};
publicAPI.traverseAllPasses = () => {
if (model.renderPasses) {
for (let index = 0; index < model.renderPasses.length; ++index) {
model.renderPasses[index].traverse(publicAPI, null);
}
}
publicAPI.copyParentContent();
if (model.notifyStartCaptureImage) {
getCanvasDataURL();
}
const childrenRW = model.renderable.getChildRenderWindowsByReference();
for (let i = 0; i < childrenRW.length; ++i) {
publicAPI.getViewNodeFor(childrenRW[i])?.traverseAllPasses();
}
};
publicAPI.copyParentContent = () => {
const rootParent = model.rootOpenGLRenderWindow;
if (
!rootParent ||
!model.context2D ||
model.children.some((oglRenderer) => !!oglRenderer.getSelector?.())
) {
return;
}
const parentCanvas = rootParent.getCanvas();
const selfCanvas = model.canvas;
model.context2D.drawImage(
parentCanvas,
0,
parentCanvas.height - selfCanvas.height, // source y axis is inverted
selfCanvas.width,
selfCanvas.height,
0,
0,
selfCanvas.width,
selfCanvas.height
);
};
publicAPI.resizeFromChildRenderWindows = () => {
// Adapt the size of the parent render window to the child render windows
const childrenRW = model.renderable.getChildRenderWindowsByReference();
Iif (childrenRW.length > 0) {
const maxSize = [0, 0];
for (let i = 0; i < childrenRW.length; ++i) {
const childSize = publicAPI.getViewNodeFor(childrenRW[i])?.getSize();
if (childSize) {
maxSize[0] = childSize[0] > maxSize[0] ? childSize[0] : maxSize[0];
maxSize[1] = childSize[1] > maxSize[1] ? childSize[1] : maxSize[1];
}
}
publicAPI.setSize(...maxSize);
}
};
publicAPI.disableCullFace = () => {
Iif (model.cullFaceEnabled) {
model.context.disable(model.context.CULL_FACE);
model.cullFaceEnabled = false;
}
};
publicAPI.enableCullFace = () => {
if (!model.cullFaceEnabled) {
model.context.enable(model.context.CULL_FACE);
model.cullFaceEnabled = true;
}
};
publicAPI.setViewStream = (stream) => {
if (model.viewStream === stream) {
return false;
}
if (model.subscription) {
model.subscription.unsubscribe();
model.subscription = null;
}
model.viewStream = stream;
if (model.viewStream) {
// Force background to be transparent + render
const mainRenderer = model.renderable.getRenderers()[0];
mainRenderer.getBackgroundByReference()[3] = 0;
// Enable display of the background image
publicAPI.setUseBackgroundImage(true);
// Bind to remote stream
model.subscription = model.viewStream.onImageReady((e) =>
publicAPI.setBackgroundImage(e.image)
);
model.viewStream.setSize(model.size[0], model.size[1]);
model.viewStream.invalidateCache();
model.viewStream.render();
publicAPI.modified();
}
return true;
};
publicAPI.createSelector = () => {
const ret = vtkOpenGLHardwareSelector.newInstance();
ret.setOpenGLRenderWindow(publicAPI);
return ret;
};
function clearEvents() {
model.canvas.removeEventListener('webglcontextlost', _preventDefault);
model.canvas.removeEventListener(
'webglcontextrestored',
publicAPI.restoreContext
);
}
publicAPI.delete = macro.chain(
() => {
if (model.context) {
deleteGLContext();
}
publicAPI.setContainer();
publicAPI.setViewStream();
},
clearEvents,
publicAPI.delete
);
// Do not trigger modified for performance reasons
publicAPI.setActiveFramebuffer = (newActiveFramebuffer) => {
model.activeFramebuffer = newActiveFramebuffer;
};
const superSetSize = publicAPI.setSize;
publicAPI.setSize = (width, height) => {
const modified = superSetSize(width, height);
if (modified) {
publicAPI.invokeWindowResizeEvent({ width, height });
}
return modified;
};
publicAPI.registerGraphicsResourceUser = (coreObject, newUser) => {
// Try to create the graphics resource if it doesn't exist
Iif (!model._graphicsResources.has(coreObject)) {
publicAPI.setGraphicsResourceForObject(coreObject, null, null);
}
// Add newUser to the set of users
const sharedResource = model._graphicsResources.get(coreObject);
sharedResource?.users.add(newUser);
};
publicAPI.unregisterGraphicsResourceUser = (coreObject, oldUser) => {
const sharedResource = model._graphicsResources.get(coreObject);
if (!sharedResource) {
return;
}
sharedResource.users.delete(oldUser);
// Release graphics resources when the number of users reaches 0
if (!sharedResource.users.size) {
sharedResource.oglObject?.releaseGraphicsResources(publicAPI);
model._graphicsResources.delete(coreObject);
}
};
publicAPI.getGraphicsResourceForObject = (coreObject) =>
model._graphicsResources.get(coreObject);
publicAPI.setGraphicsResourceForObject = (coreObject, oglObject, hash) => {
Iif (!coreObject) {
return;
}
const sharedResource = model._graphicsResources.get(coreObject);
// Release the old resource
sharedResource?.oglObject?.releaseGraphicsResources(publicAPI);
// Keep the same users that have registered for this coreObject
model._graphicsResources.set(coreObject, {
coreObject,
oglObject,
hash,
users: sharedResource?.users ?? new Set(),
});
};
publicAPI.getGraphicsMemoryInfo = () => {
let memUsed = 0;
model._graphicsResources.forEach(({ oglObject }) => {
memUsed += oglObject.getAllocatedGPUMemoryInBytes();
});
return memUsed;
};
publicAPI.releaseGraphicsResources = () => {
// Clear the shader cache
if (model.shaderCache !== null) {
model.shaderCache.releaseGraphicsResources(publicAPI);
}
// Free cached graphics resources at the context level
model._graphicsResources.forEach(({ oglObject }) => {
oglObject.releaseGraphicsResources(publicAPI);
});
model._graphicsResources.clear();
if (model.textureUnitManager !== null) {
model.textureUnitManager.freeAll();
}
// Finally, ask the renderers to release prop resources
model.renderable.getRenderersByReference().forEach((ren) => {
const glRen = publicAPI.getViewNodeFor(ren);
glRen?.releaseGraphicsResources();
});
};
// Proxy some methods if needed
const publicAPIBeforeProxy = { ...publicAPI };
parentMethodsToProxy.forEach((methodName) => {
publicAPI[methodName] = (...args) => {
Iif (model.rootOpenGLRenderWindow) {
// Proxy only methods when the render window has a parent
return model.rootOpenGLRenderWindow[methodName](...args);
}
return publicAPIBeforeProxy[methodName](...args);
};
});
}
// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------
const DEFAULT_VALUES = {
cullFaceEnabled: false,
shaderCache: null,
initialized: false,
context: null,
context2D: null,
canvas: null,
cursorVisibility: true,
cursor: 'pointer',
textureUnitManager: null,
textureResourceIds: null,
containerSize: null,
renderPasses: [],
notifyStartCaptureImage: false,
webgl2: false,
defaultToWebgl2: true, // attempt webgl2 on by default
activeFramebuffer: null,
imageFormat: 'image/png',
useOffScreen: false,
useBackgroundImage: false,
};
// ----------------------------------------------------------------------------
export function extend(publicAPI, model, initialValues = {}) {
Object.assign(model, DEFAULT_VALUES, initialValues);
// Inheritance
vtkRenderWindowViewNode.extend(publicAPI, model, initialValues);
// Create internal instances
if (!model.canvas) {
model.canvas = document.createElement('canvas');
model.canvas.style.width = '100%';
}
if (!model.selector) {
model.selector = vtkOpenGLHardwareSelector.newInstance();
model.selector.setOpenGLRenderWindow(publicAPI);
}
// Create internal bgImage
model.bgImage = new Image();
model.bgImage.style.position = 'absolute';
model.bgImage.style.left = '0';
model.bgImage.style.top = '0';
model.bgImage.style.width = '100%';
model.bgImage.style.height = '100%';
model.bgImage.style.zIndex = '-1';
model._textureResourceIds = new Map();
model._graphicsResources = new Map();
model._glInformation = null;
model.myFactory = vtkOpenGLViewNodeFactory.newInstance();
model.shaderCache = vtkShaderCache.newInstance();
model.shaderCache.setOpenGLRenderWindow(publicAPI);
// setup default forward pass rendering
model.renderPasses[0] = vtkForwardPass.newInstance();
// Build VTK API
macro.get(publicAPI, model, [
'shaderCache',
'textureUnitManager',
'webgl2',
'useBackgroundImage',
'activeFramebuffer',
'rootOpenGLRenderWindow',
]);
macro.setGet(publicAPI, model, [
'initialized',
'context',
'context2D',
'canvas',
'renderPasses',
'notifyStartCaptureImage',
'defaultToWebgl2',
'cursor',
'useOffScreen',
]);
macro.setGetArray(publicAPI, model, ['size'], 2);
macro.event(publicAPI, model, 'imageReady');
macro.event(publicAPI, model, 'windowResizeEvent');
// Object methods
vtkOpenGLRenderWindow(publicAPI, model);
}
// ----------------------------------------------------------------------------
export const newInstance = macro.newInstance(extend, 'vtkOpenGLRenderWindow');
// ----------------------------------------------------------------------------
// Register API specific RenderWindow implementation
// ----------------------------------------------------------------------------
registerViewConstructor('WebGL', newInstance);
// ----------------------------------------------------------------------------
export default {
newInstance,
extend,
pushMonitorGLContextCount,
popMonitorGLContextCount,
};
// Register ourself to OpenGL backend if imported
registerOverride('vtkRenderWindow', newInstance);
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