Method CopyTex2DMSToArray

renderdoc/driver/gl/gl_msaa_array_conv.cpp:115–237

}

void WrappedOpenGL::CopyTex2DMSToArray(GLuint &destArray, GLuint srcMS, GLint width, GLint height,
                                       GLint arraySize, GLint samples, GLenum intFormat)
{
  const ArrayMSPrograms &arrms = GetArrayMS();

  intFormat = GetSizedFormat(intFormat);

  bool needInit = false;

  // create temporary texture array, which we'll initialise to be the width/height in same format,
  // with the same number of array slices as multi samples.
  if(destArray == 0)
  {
    GL.glGenTextures(1, &destArray);
    GL.glBindTexture(eGL_TEXTURE_2D_ARRAY, destArray);

    needInit = true;
  }

  bool failed = false;

  if(!HasExt[ARB_compute_shader])
  {
    RDCWARN(
        "Can't copy multisampled texture to array for serialisation without ARB_compute_shader.");
    failed = true;
  }

  if(!failed && !HasExt[ARB_texture_view])
  {
    RDCWARN("Can't copy multisampled texture to array for serialisation without ARB_texture_view.");
    failed = true;
  }

  if(!failed && !HasExt[ARB_texture_storage])
  {
    RDCWARN(
        "Can't copy multisampled texture to array for serialisation without ARB_texture_view, and "
        "ARB_texture_view requires ARB_texture_storage.");
    failed = true;
  }

  if(!arrms.MS2Array || (IsDepthStencilFormat(intFormat) && !arrms.DepthMS2Array))
  {
    failed = true;
  }

  if(failed)
  {
    // create using the non-storage API which is always available, so the texture is at least valid
    // (but with undefined/empty contents).
    if(needInit)
    {
      GL.glTextureImage3DEXT(destArray, eGL_TEXTURE_2D_ARRAY, 0, intFormat, width, height,
                             arraySize * samples, 0, GetBaseFormat(intFormat),
                             GetDataType(intFormat), NULL);
      GL.glTextureParameteriEXT(destArray, eGL_TEXTURE_2D_ARRAY, eGL_TEXTURE_MAX_LEVEL, 0);
    }