@phaserjs/phaser/renderer/webgl1/renderpass/Draw.js

Phaser 4

import { CurrentShader } from "./CurrentShader";
import { CurrentVertexBuffer } from "./CurrentVertexBuffer";
import { PopFramebuffer } from "./PopFramebuffer";
import { SetFramebuffer } from "./index";
import { gl } from "../GL";
export function Draw(renderPass) {
  const count = renderPass.count;
  if (count === 0) {
    return;
  }
  const currentBuffer = CurrentVertexBuffer();
  const currentShader = CurrentShader();
  const renderToFramebuffer = currentShader.shader.renderToFramebuffer;
  if (renderToFramebuffer) {
    SetFramebuffer(currentShader.shader.framebuffer, true, currentShader.shader.viewport);
  }
  if (count === currentBuffer.batchSize) {
    const type = currentBuffer.isDynamic ? gl.DYNAMIC_DRAW : gl.STATIC_DRAW;
    gl.bufferData(gl.ARRAY_BUFFER, currentBuffer.data, type);
  } else {
    const subsize = count * currentBuffer.entryElementSize;
    const view = currentBuffer.vertexViewF32.subarray(0, subsize);
    gl.bufferSubData(gl.ARRAY_BUFFER, 0, view);
  }
  if (currentBuffer.indexed) {
    gl.drawElements(gl.TRIANGLES, count * currentBuffer.entryIndexSize, gl.UNSIGNED_SHORT, 0);
  } else {
    gl.drawArrays(gl.TRIANGLES, 0, count * currentBuffer.elementsPerEntry);
  }
  if (renderToFramebuffer) {
    PopFramebuffer();
  }
}