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Improve color handling approach

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This commit is contained in:
schmelczerandras 2020-10-13 22:37:23 +02:00
parent e53ca905af
commit f29293c475
22 changed files with 259 additions and 181 deletions
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98
src/graphics/graphics-library/frame-buffer/intermediate-frame-buffer.ts
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@ -1,33 +1,23 @@
import { enableExtension } from '../helper/enable-extension';
import { ColorTexture } from '../texture/color-texture';
import { DistanceTexture } from '../texture/distance-texture';
import { Texture } from '../texture/texture';
import { UniversalRenderingContext } from '../universal-rendering-context';
import { FrameBuffer } from './frame-buffer';
/** @internal */
export class IntermediateFrameBuffer extends FrameBuffer {
private frameTexture: WebGLTexture;
private floatEnabled = false;
private floatLinearEnabled = false;
private distanceTexture?: DistanceTexture;
private colorTexture: ColorTexture;
constructor(gl: UniversalRenderingContext) {
super(gl);
try {
enableExtension(gl, 'EXT_color_buffer_float');
this.floatEnabled = true;
this.colorTexture = new ColorTexture(gl);
enableExtension(gl, 'OES_texture_float_linear');
this.floatLinearEnabled = true;
} catch {
// it's okay
if (gl.isWebGL2) {
this.distanceTexture = new DistanceTexture(gl);
}
// can only return null on lost context
gl.activeTexture(gl.TEXTURE0);
this.frameTexture = this.gl.createTexture()!;
this.configureTexture();
// can only return null on lost context
this.frameBuffer = this.gl.createFramebuffer()!;
this.configureFrameBuffer();
@ -35,74 +25,48 @@ export class IntermediateFrameBuffer extends FrameBuffer {
}
public destroy(): void {
this.gl.deleteTexture(this.frameTexture);
if (this.distanceTexture) {
this.gl.deleteTexture(this.distanceTexture);
}
this.gl.deleteTexture(this.colorTexture);
this.gl.deleteFramebuffer(this.frameBuffer);
}
public get colorTexture(): WebGLTexture {
return this.frameTexture;
public get textures(): Array<Texture> {
return this.distanceTexture
? [this.distanceTexture, this.colorTexture]
: [this.colorTexture];
}
public setSize(): boolean {
const hasChanged = super.setSize();
if (hasChanged) {
this.bind();
this.gl.texImage2D(
this.gl.TEXTURE_2D,
0,
this.floatEnabled ? this.gl.RG16F : this.gl.RGB,
this.size.x,
this.size.y,
0,
this.floatEnabled ? this.gl.RG : this.gl.RGB,
this.floatEnabled ? this.gl.FLOAT : this.gl.UNSIGNED_BYTE,
null
);
this.colorTexture.setSize(this.size);
this.distanceTexture?.setSize(this.size);
}
return hasChanged;
}
private bind() {
this.gl.activeTexture(this.gl.TEXTURE0);
this.gl.bindTexture(this.gl.TEXTURE_2D, this.frameTexture);
}
private configureTexture() {
this.bind();
this.gl.texParameteri(
this.gl.TEXTURE_2D,
this.gl.TEXTURE_MAG_FILTER,
this.floatLinearEnabled ? this.gl.LINEAR : this.gl.NEAREST
);
this.gl.texParameteri(
this.gl.TEXTURE_2D,
this.gl.TEXTURE_MIN_FILTER,
this.floatLinearEnabled ? this.gl.LINEAR : this.gl.NEAREST
);
this.gl.texParameteri(
this.gl.TEXTURE_2D,
this.gl.TEXTURE_WRAP_S,
this.gl.CLAMP_TO_EDGE
);
this.gl.texParameteri(
this.gl.TEXTURE_2D,
this.gl.TEXTURE_WRAP_T,
this.gl.CLAMP_TO_EDGE
);
}
private configureFrameBuffer() {
this.gl.bindFramebuffer(this.gl.FRAMEBUFFER, this.frameBuffer);
const attachmentPoint = this.gl.COLOR_ATTACHMENT0;
this.gl.framebufferTexture2D(
this.gl.FRAMEBUFFER,
attachmentPoint,
this.gl.COLOR_ATTACHMENT0,
this.gl.TEXTURE_2D,
this.frameTexture,
this.colorTexture.colorTexture,
0
);
if (this.gl.isWebGL2) {
this.gl.framebufferTexture2D(
this.gl.FRAMEBUFFER,
this.gl.COLOR_ATTACHMENT1,
this.gl.TEXTURE_2D,
this.distanceTexture!.colorTexture,
0
);
}
}
}