// Here we set up transformations.  These are just examples, set up so
// that our unit tests can transform among spaces in ways that we will
// recognize as correct.  The "shader" and "object" spaces are required
// by OSL and the ShaderGlobals will need to have references to them.
// For good measure, we also set up a "myspace" space, registering it
// with the RendererServices.
// 
static void
setup_transformations (SimpleRenderer &rend, OSL::Matrix44 &Mshad,
                       OSL::Matrix44 &Mobj)
{
    Matrix44 M (1,0,0,0, 0,1,0,0, 0,0,1,0, 0,0,0,1);
    rend.camera_params (M, ustring("perspective"), 90.0f,
                        0.1f, 1000.0f, xres, yres);

    // Make a "shader" space that is translated one unit in x and rotated
    // 45deg about the z axis.
    Mshad.makeIdentity ();
    Mshad.translate (OSL::Vec3 (1.0, 0.0, 0.0));
    Mshad.rotate (OSL::Vec3 (0.0, 0.0, M_PI_4));
    // std::cout << "shader-to-common matrix: " << Mshad << "\n";

    // Make an object space that is translated one unit in y and rotated
    // 90deg about the z axis.
    Mobj.makeIdentity ();
    Mobj.translate (OSL::Vec3 (0.0, 1.0, 0.0));
    Mobj.rotate (OSL::Vec3 (0.0, 0.0, M_PI_2));
    // std::cout << "object-to-common matrix: " << Mobj << "\n";

    OSL::Matrix44 Mmyspace;
    Mmyspace.scale (OSL::Vec3 (1.0, 2.0, 1.0));
    // std::cout << "myspace-to-common matrix: " << Mmyspace << "\n";
    rend.name_transform ("myspace", Mmyspace);
}
Esempio n. 2
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bool OSLRenderServices::get_matrix(OSL::ShaderGlobals *sg,
                                   OSL::Matrix44 &result,
                                   ustring from,
                                   float time)
{
  ShaderData *sd = (ShaderData *)(sg->renderstate);
  KernelGlobals *kg = sd->osl_globals;

  if (from == u_ndc) {
    copy_matrix(result, kernel_data.cam.ndctoworld);
    return true;
  }
  else if (from == u_raster) {
    copy_matrix(result, kernel_data.cam.rastertoworld);
    return true;
  }
  else if (from == u_screen) {
    copy_matrix(result, kernel_data.cam.screentoworld);
    return true;
  }
  else if (from == u_camera) {
    copy_matrix(result, kernel_data.cam.cameratoworld);
    return true;
  }
  else if (from == u_world) {
    result.makeIdentity();
    return true;
  }

  return false;
}
Esempio n. 3
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bool OSLRenderServices::get_inverse_matrix(OSL::ShaderGlobals *sg,
                                           OSL::Matrix44 &result,
                                           ustring to,
                                           float time)
{
  ShaderData *sd = (ShaderData *)(sg->renderstate);
  KernelGlobals *kg = sd->osl_globals;

  if (to == u_ndc) {
    copy_matrix(result, kernel_data.cam.worldtondc);
    return true;
  }
  else if (to == u_raster) {
    copy_matrix(result, kernel_data.cam.worldtoraster);
    return true;
  }
  else if (to == u_screen) {
    copy_matrix(result, kernel_data.cam.worldtoscreen);
    return true;
  }
  else if (to == u_camera) {
    copy_matrix(result, kernel_data.cam.worldtocamera);
    return true;
  }
  else if (to == u_world) {
    result.makeIdentity();
    return true;
  }

  return false;
}
Esempio n. 4
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bool OSLRenderServices::get_inverse_matrix(OSL::ShaderGlobals *sg, OSL::Matrix44 &result, ustring to, float time)
{
	KernelGlobals *kg = kernel_globals;

	if(to == u_ndc) {
		Transform tfm = transform_transpose(kernel_data.cam.worldtondc);
		COPY_MATRIX44(&result, &tfm);
		return true;
	}
	else if(to == u_raster) {
		Transform tfm = transform_transpose(kernel_data.cam.worldtoraster);
		COPY_MATRIX44(&result, &tfm);
		return true;
	}
	else if(to == u_screen) {
		Transform tfm = transform_transpose(kernel_data.cam.worldtoscreen);
		COPY_MATRIX44(&result, &tfm);
		return true;
	}
	else if(to == u_camera) {
		Transform tfm = transform_transpose(kernel_data.cam.worldtocamera);
		COPY_MATRIX44(&result, &tfm);
		return true;
	}
	else if(to == u_world) {
		result.makeIdentity();
		return true;
	}

	return false;
}