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Frame.ts
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Frame.ts
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import {RequireOne} from '../../types/TypeGenerators';
import {RnObject} from '../core/RnObject';
import {IVector4} from '../math/IVector';
import {assertExist} from '../misc/MiscUtil';
import {Is} from '../misc/Is';
import {RenderTargetTexture} from '../textures/RenderTargetTexture';
import {Expression} from './Expression';
import {FrameBuffer} from './FrameBuffer';
import {RenderPass} from './RenderPass';
type ColorAttachmentIndex = number;
type InputRenderPassIndex = number;
type RenderPassIndex = number;
type ExpressionInputs = {
expression: Expression;
inputRenderPasses: RenderPass[];
};
type GeneratorOfRenderTargetTexturePromise =
IterableIterator<RenderTargetTexture>;
/**
* Frame manages expressions and input/output dependencies between them
*/
export class Frame extends RnObject {
private __expressions: ExpressionInputs[] = [];
public static readonly FrameBuffer = 'FrameBuffer';
public static readonly ResolveFrameBuffer = 'ResolveFrameBuffer';
public static readonly ResolveFrameBuffer2 = 'ResolveFrameBuffer2';
private __expressionQueries:
[
Expression,
RequireOne<{
index?: InputRenderPassIndex;
uniqueName?: string;
instance?: RenderPass;
}>,
ColorAttachmentIndex,
GeneratorOfRenderTargetTexturePromise,
'FrameBuffer' | 'ResolveFrameBuffer' | 'ResolveFrameBuffer2'
][] = [];
constructor() {
super();
}
/**
* Add render passes to the end of this expression.
*/
addExpression(
expression: Expression,
{
inputRenderPasses,
outputs,
}: {
inputRenderPasses?: RenderPass[];
outputs?: {
renderPass: RequireOne<{
index?: RenderPassIndex;
uniqueName?: string;
instance?: RenderPass;
}>;
frameBuffer: FrameBuffer;
}[];
} = {
inputRenderPasses: [],
outputs: [],
}
) {
if (Is.exist(outputs)) {
for (const output of outputs) {
let renderPass = output.renderPass.instance;
if (Is.exist(output.renderPass.instance)) {
renderPass = output.renderPass.instance;
} else if (Is.exist(output.renderPass.index)) {
renderPass = expression.renderPasses[output.renderPass.index];
} else if (Is.exist(output.renderPass.uniqueName)) {
renderPass = RnObject.getRnObjectByName(
output.renderPass.uniqueName
) as RenderPass;
}
if (Is.exist(renderPass)) {
renderPass.setFramebuffer(output.frameBuffer);
}
}
}
this.__expressions.push({
expression,
inputRenderPasses: Is.exist(inputRenderPasses) ? inputRenderPasses : [],
});
}
/**
* Get ColorAttachment RenderBuffer from input render pass of the expression
* @param inputFrom input Expression
* @param {inputIndex: number, colorAttachmentIndex: number} input RenderPass Index and ColorAttachmen tIndex
* @returns {Promise<RenderTargetTexture>}
*/
getColorAttachmentFromInputOf(
inputFrom: Expression,
renderPassArg: {
renderPass: RequireOne<{
index?: InputRenderPassIndex;
uniqueName?: string;
instance?: RenderPass;
}>;
colorAttachmentIndex: ColorAttachmentIndex;
framebufferType: 'FrameBuffer' | 'ResolveFrameBuffer' | 'ResolveFrameBuffer2';
} = {
renderPass: {
index: 0,
},
colorAttachmentIndex: 0,
framebufferType: Frame.FrameBuffer,
}
): Promise<RenderTargetTexture> {
const promise = new Promise<RenderTargetTexture>(
(
resolve: (
value: RenderTargetTexture | PromiseLike<RenderTargetTexture>
) => void
) => {
function* generatorFunc() {
const renderTargetTexture = (yield) as unknown as RenderTargetTexture;
resolve(renderTargetTexture);
return renderTargetTexture;
}
const generator = generatorFunc();
// register the generator
this.__expressionQueries.push([
inputFrom,
renderPassArg.renderPass,
renderPassArg.colorAttachmentIndex,
generator as GeneratorOfRenderTargetTexturePromise,
renderPassArg.framebufferType,
]);
}
);
return promise;
}
/**
*
*/
resolve() {
for (const [exp, renderPassArg, colorAttachmentIndex, generator, frameBufferType] of this
.__expressionQueries) {
for (const expData of this.__expressions) {
if (exp === expData.expression) {
let renderPassObj = renderPassArg.instance;
if (Is.exist(renderPassArg.instance)) {
renderPassObj = renderPassArg.instance;
} else if (Is.exist(renderPassArg.index)) {
renderPassObj = expData.inputRenderPasses[renderPassArg.index];
} else if (Is.exist(renderPassArg.uniqueName)) {
renderPassObj = RnObject.getRnObjectByName(
renderPassArg.uniqueName
) as RenderPass;
}
let framebuffer: FrameBuffer | undefined;
if (frameBufferType === 'ResolveFrameBuffer2') {
framebuffer = renderPassObj!.getResolveFramebuffer2();
} else if (frameBufferType === 'ResolveFrameBuffer') {
framebuffer = renderPassObj!.getResolveFramebuffer();
} else if (frameBufferType === 'FrameBuffer') {
framebuffer = renderPassObj!.getFramebuffer();
}
if (Is.exist(framebuffer)) {
const renderTargetTexture =
framebuffer.getColorAttachedRenderTargetTexture(
colorAttachmentIndex
);
if (Is.exist(renderTargetTexture)) {
generator.next(renderTargetTexture as any);
generator.next(renderTargetTexture as any);
}
}
}
}
}
}
/**
* Clear render passes of this expression.
*/
clearExpressions() {
this.__expressions.length = 0;
}
/**
* Get expressions
*/
get expressions() {
return this.__expressions.map(exp => exp.expression);
}
setViewport(viewport: IVector4) {
for (const exp of this.__expressions) {
exp.expression.setViewport(viewport);
}
}
}