Function drawTexture

tfjs-react-native/src/camera/camera_webgl_util.ts:151–176

(
    gl: WebGL2RenderingContext, texture: WebGLTexture,
    dims: {width: number, height: number}, flipHorizontal: boolean,
    rotation: Rotation)

 * @param dims texture size
 */
export function drawTexture(
    gl: WebGL2RenderingContext, texture: WebGLTexture,
    dims: {width: number, height: number}, flipHorizontal: boolean,
    rotation: Rotation) {
  const {program, vao, vertices, uniformLocations} =
      drawTextureProgram(gl, flipHorizontal, false, rotation);
  gl.useProgram(program);
  gl.bindVertexArray(vao);

  // Set texture sampler uniform
  const TEXTURE_UNIT = 0;
  gl.uniform1i(uniformLocations.get('inputTexture'), TEXTURE_UNIT);
  gl.activeTexture(gl.TEXTURE0 + TEXTURE_UNIT);
  gl.bindTexture(gl.TEXTURE_2D, texture);

  // Draw to screen
  gl.bindFramebuffer(gl.FRAMEBUFFER, null);
  gl.viewport(0, 0, dims.width, dims.height);
  // gl.clearColor(1, 1, 0, 1);
  // gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
  gl.drawArrays(gl.TRIANGLES, 0, vertices.length / 2);

  gl.bindVertexArray(null);
  gl.bindTexture(gl.TEXTURE_2D, null);
  gl.useProgram(null);
}

export function runResizeProgram(
    gl: WebGL2RenderingContext, inputTexture: WebGLTexture,