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Support depth texture #109

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Support depth texture #109

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2 changes: 2 additions & 0 deletions index.d.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -140,6 +140,7 @@ declare module '2gl' {

export interface RenderTargetOptions extends TextureOptions {
size: Vec2;
depthTexture: boolean;
}

export class Object3D {
Expand Down Expand Up @@ -186,6 +187,7 @@ declare module '2gl' {
public remove(gl: WebGLRenderingContext): this;
public setSize(size: Vec2): this;
public getTexture(): Texture;
public getDepthBuffer(): Texture | WebGLRenderbuffer | null;
}

export interface RendererState {
Expand Down
55 changes: 48 additions & 7 deletions src/RenderTarget.js
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,13 @@ class RenderTarget {
*/
this._texture = new Texture(null, this.options);


/**
* @type {Texture | WebGLRenderbuffer | null}
* @ignore
*/
this._depthBuffer = null;

/**
* Контекст WebGL, в котором был инициализирован фреймбуфер.
* Используется только для удаления, подумать хорошо, прежде чем использовать для чего-то ещё.
Expand Down Expand Up @@ -79,6 +86,14 @@ class RenderTarget {
return this._texture;
}

/**
* Возвращает текущие буфер или текстуру глубины фреймбуфера
* @return {Texture | WebGLRenderbuffer | null}
*/
getDepthBuffer() {
return this._depthBuffer;
}

/**
* Инициализирует фреймбуфер, текстуры и рендербуфер
* @param {WebGLRenderingContext} gl
Expand All @@ -96,12 +111,32 @@ class RenderTarget {
this._frameBuffer = gl.createFramebuffer();
gl.bindFramebuffer(gl.FRAMEBUFFER, this._frameBuffer);

this._renderBuffer = gl.createRenderbuffer();
gl.bindRenderbuffer(gl.RENDERBUFFER, this._renderBuffer);
gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16, this.options.size[0], this.options.size[1]);

gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, this._texture.getTexture(), 0);
gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.RENDERBUFFER, this._renderBuffer);

if (this.options.depthTexture) {
this._depthBuffer = new Texture(null, {
magFilter: Texture.NearestFilter,
minFilter: Texture.NearestFilter,
format: Texture.DepthComponentFormat,
size: this.options.size,
premultiplyAlpha: false,
generateMipmaps: false,
type: Texture.UnsignedInt,
});
this._depthBuffer.prepare(gl);
gl.framebufferTexture2D(
gl.FRAMEBUFFER,
gl.DEPTH_ATTACHMENT,
gl.TEXTURE_2D,
this._depthBuffer.getTexture(),
0
);
} else {
this._depthBuffer = gl.createRenderbuffer();
gl.bindRenderbuffer(gl.RENDERBUFFER, this._depthBuffer);
gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16, this.options.size[0], this.options.size[1]);
gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.RENDERBUFFER, this._depthBuffer);
}

this._checkComplete(gl);

Expand All @@ -119,11 +154,15 @@ class RenderTarget {
this._texture = null;
}

if (this._depthBuffer) {
this._depthBuffer instanceof Texture ?
this._depthBuffer.remove(this._glContext) : this._glContext.deleteRenderbuffer(this._depthBuffer);
this._depthBuffer = null;
}

if (this._frameBuffer) {
this._glContext.deleteFramebuffer(this._frameBuffer);
this._glContext.deleteRenderbuffer(this._renderBuffer);
this._frameBuffer = null;
this._renderBuffer = null;
}
}

Expand Down Expand Up @@ -154,6 +193,7 @@ class RenderTarget {
RenderTarget.defaultOptions = Object.assign({}, Texture.defaultOptions, {
size: [0, 0],
generateMipmaps: false,
depthTexture: false,
});

export default RenderTarget;
Expand All @@ -163,4 +203,5 @@ export default RenderTarget;
*
* @typedef {Object} RenderTargetOptions
* @property {Number[]} size
* @property {Boolean} depthTexture
*/
4 changes: 4 additions & 0 deletions src/Texture.js
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Original file line number Diff line number Diff line change
Expand Up @@ -165,9 +165,11 @@ class Texture {
if (param === Texture.RgbaFormat) { return gl.RGBA; }
if (param === Texture.AlphaFormat) { return gl.ALPHA; }
if (param === Texture.RgbFormat) { return gl.RGB; }
if (param === Texture.DepthComponentFormat) { return gl.DEPTH_COMPONENT; }

if (param === Texture.UnsignedByte) { return gl.UNSIGNED_BYTE; }
if (param === Texture.Float) { return gl.FLOAT; }
if (param === Texture.UnsignedInt) { return gl.UNSIGNED_INT; }

return null;
}
Expand All @@ -184,12 +186,14 @@ Texture.LinearFilter = 4;
Texture.LinearMipMapNearestFilter = 5;
Texture.LinearMipMapLinearFilter = 6;

Texture.DepthComponentFormat = 7;
Texture.RgbaFormat = 11;
Texture.AlphaFormat = 12;
Texture.RgbFormat = 13;

Texture.UnsignedByte = 14;
Texture.Float = 15;
Texture.UnsignedInt = 16;

Texture.defaultOptions = {
magFilter: Texture.LinearFilter,
Expand Down