TargetNode.prototype.renderSecondaryWebGL = function()

in seriously.js [3926:3972]
39 lines of code
9 McCabe index (conditional complexity)

		TargetNode.prototype.renderSecondaryWebGL = function () {
			var sourceWidth,
				sourceHeight,
				matrix,
				x,
				y;

			if (this.dirty && this.ready && this.source) {
				this.emit('render');
				this.source.render(true);

				sourceWidth = this.source.width;
				sourceHeight = this.source.height;

				if (!this.pixels || this.pixels.length !== sourceWidth * sourceHeight * 4) {
					this.pixels = new Uint8Array(sourceWidth * sourceHeight * 4);
				}

				this.source.readPixels(0, 0, sourceWidth, sourceHeight, this.pixels);

				this.gl.texImage2D(this.gl.TEXTURE_2D, 0, this.gl.RGBA, sourceWidth, sourceHeight, 0, this.gl.RGBA, this.gl.UNSIGNED_BYTE, this.pixels);

				if (sourceWidth === this.width && sourceHeight === this.height) {
					this.uniforms.transform = identity;
				} else if (this.transformDirty) {
					matrix = this.transform;
					mat4.copy(matrix, identity);
					x = this.source.width / this.width;
					y = this.source.height / this.height;
					matrix[0] *= x;
					matrix[1] *= x;
					matrix[2] *= x;
					matrix[3] *= x;
					matrix[4] *= y;
					matrix[5] *= y;
					matrix[6] *= y;
					matrix[7] *= y;
					this.uniforms.transform = matrix;
					this.transformDirty = false;
				}

				this.uniforms.source = this.texture;
				draw(this.shader, this.model, this.uniforms, null, this);

				this.dirty = false;
			}
		};